Photo: Archer Aviation

Is it possible that we have already oversold the potential — or at least the timing — for when we expect operational electrical vertical take-off and landing (eVTOL) air taxis? United, Delta, Southwest, and other airlines seem intent on being part of the coming air taxi game, but locking up future potential without anything delivered could be risky.

Now, this eVTOL stuff is not cheap, and it does not come quickly—it takes a massive amount of investment and effort to create a new mode of air transport, especially if it could be wholly or even partially autonomous. Most eVTOL outfits have decided to launch initially with a piloted option, leaving autonomy for later.

The initial stages of the development process involve reviewing the designs, followed by vetting and selecting subcontractors. A strategic plan is then established to develop a few operational prototypes. Alongside this, a firm strategy must be created to ensure compliance with agency regulations, resulting in the demonstration of proof of concept.

The process could be accelerated with a piloted airframe derived from a proven baseline, but eVTOLs are a new concept. Although partially derived from UAVs, eVTOLs differ significantly from existing aircraft. UAVs are not big enough to carry passengers and have not received approval to transport people. True, the automation angle has taken significant steps forward in recent years, but certifying that these systems will always operate correctly, without minimal chance of failure while flying over city centers and over many, many people – well, that’s another coat of many colors! Let’s just say these are BIG STEPS to initiate a new form of air transportation.

Nevertheless, despite the excitement and seemingly optimistic timelines for achieving FAA or other regulatory approval for fully operational eVTOL aircraft capable of safely transporting passengers, most major airlines have already committed to significant purchases and investments in this technology.

United Airlines conditionally committed to buy 200 Archer Aviation Midnight eVTOL aircraft for $1 billion in early 2021, added an option of $500 million for another 100, and recently took more partial ownership when Archer pursued a public listing through a merger with Special Acquisition Company (SPAC) Atlas Crest Investment Corp.

Archer has been moving its aspirations in several other directions while it works closely with the FAA to achieve certification of the Midnight eVTOL. Notably, the company has been granted a Part 135 Air Carrier and Operation certification by the FAA, which allows Archer to operate a for-profit airline with not only the Midnight eVTOL but also existing commercial aircraft, presumably including helicopters. Using other aircraft in the interim could allow Archer to prove out routes before having operational eVTOLs available and generate revenue. United and Archer have already selected at least one initial route in Chicago, from the city center to O’Hare airport.

Archer has also been busy signing up partners in Korea. Demonstrations are planned for Q4 2024 and in Abu Dhabi, Dubai, and other locations across the UAE. The forecasting service will start in late 2025.

Back in the U.S., Southwest Airlines — another Archer investor — is also working with the company on the West Coast to develop routes around population centers in California. Archer has signed up with a local developer to establish Vertiports, locations with suitable ground access for passengers, landing/take-off and rapid charging facilities for eVTOL aircraft and existing helicopters. Southwest plans to install these stations at five locations: South San Francisco, Napa, San Jose, Oakland, and Livermore.

Another agreement with Signature Aviation is designed to provide Archer with access to general aviation terminals and electrical supply for eVTOL operations in New York, Los Angeles, San Francisco Bay Area, and Texas, including United Airline hubs at Newark International (EWR) and Chicago O’Hare (ORD) Airports, as soon as the end of 2025, almost the exact date that United expects to start eVTOL passenger ferry services to and from O’Hare.

Stellantis has also invested around $150 million in Archer, plus another $55 million in June 2024, as the two work on establishing a high-volume 350,000 sq ft eVTOL manufacturing facility in Georgia. A new agreement between the two companies brings additional investment, intended to take the facility to a yearly build output of 650 eVTOLs.

Photo: Joby Aviation

Unlike United, Delta Airlines and Joby Aviation aim for door-to-door service, intending to pick up passengers at their own homes and bring them directly to Delta at the airport. With fewer, larger propellers, Joby claims a top speed of 200 mph, compared to Midnight’s 150 mph. Apparently, both Midnight and the Joby eVTOL have a passenger capacity of one pilot plus four passengers.

Another significant June 2023 investment in Joby was reported to have come from SK Telecom (SKT) in Korea, which made an equity investment of $100 million in Joby. The Korean government is promoting aerial ride-sharing through a phased demonstration program, for which the partners signed up to participate in early 2022. Joby was also certified to be a Part 135 air carrier almost two years earlier than Archer.

Both Archer and Joby have already delivered eVTOL aircraft to the U.S. Air Force (USAF) for on-base evaluation. The USAF has been promoting eVTOL development for some time, not only for on-base logistics but also, apparently, evaluation for front-line resupply operations.

Eve eVTOL rolls out and is joining the flight test program. (Photo: Eve Air Mobility)

Eve Air Mobility has received significant investment from aircraft manufacturer Embraer in Brazil, and Toyota is supporting high-volume manufacturing. This year, contact was made with Air-X in Japan to buy ten aircraft with options for 40 more—just one customer of several who have placed Letters of Intent to buy over 3,000 Eve eVTOL aircraft. United Airlines is another one of those customers who also placed a conditional order for 200 Eve eVTOL and options for another 200 aircraft back in 2022.

This is a very short overview of just a few of over 200 potential eVTOL-piloted and autonomous UAV manufacturers that have turned into passenger-carrying air taxis. The partial investment story behind these companies and their air-mobility adventures indicates that even though it is going to be quite some time before these aircraft start to hop over cities to airports – making a potential two-hour journey in 10-15 minutes at the exact projected cost as existing ride-sharing, a lot is riding on a successful outcome. Maybe United’s duel track investment in both Archer and Joby will also ensure that one or the other will bear fruit. These few outfits we’ve reviewed have a long way to go, but their investing partners seem to have accepted the risk and have faith that their long-term roll of the dice will end up in their favor.

<p>The post UAV updates first appeared on GPS World.</p>

General Atomics/AFRL X-67A in flight (Photo: Air Force Research Laboratory Public Affairs)

Little is currently known about the AFRL/GA-ASI unmanned aircraft, other than indications that it has been developed under a Collaborative Combat Aircraft (CCA) program and built on a common frame, which is intended to aid the rapid development of future new variants.

AFRL has previously sponsored Kratos to develop the XQ-58A Valkyrie, which is also intended to “work in teams with manned aircraft,” as a low-cost “attributable” asset commanded by a manned flying companion. The aircraft launches by rocket assist and is recovered vertically by parachute – the new ‘trolley’ launch capability allows the jet-powered Valkyrie to take off on a regular runway.

In earlier flight testing, communications between Valkyrie and both an F-22 Raptor and an F-35 Lightening front-line manned aircraft were established, demonstrating the manned/unmanned teaming concept. With a range of roughly 3,000 mi and an operational ceiling of 44,000 ft, the Valkyrie is intended to demonstrate how an armed, low-cost UAV can bring significant additional assets into combat situations. However, the original test article is now retired and has been put on display at the National Museum of the USAF in Dayton, Ohio, so its demonstration days appear to be over.

XQ-58A Valkyrie. (Photo: AFRL)

Nevertheless, Kratos has built several other production Valkyrie UAVs, which are reportedly undergoing tests with the US Airforce, Marines and Navy. Reports indicate that an XQ-58B electronics defense suppression version has been developed and demonstrated, along with other aircraft that have demonstrated weapons release from an internal stores bay, along with an intriguing release of a small UAV from that same internal bay.

Boeing’s Aurora Flight Sciences has just launched the Skiron-XLE Class 2 UAV – Class 2 meaning that it’s small enough to fit in the back of a pick-up truck. It was derived from an earlier Skiron-X version, which had a wingspan of 16 ft, a length of 7 ft, a weight of less than 50 lb and a meager range of only 8 mi.

Skiron-XLE. (Photo: Aurora Flight Sciences)

IE-Soar-800W fuel-cell and regulator. (Photo: IE)

Aurora has now come up with a way to extend the range of the vertical take-off and landing (VTOL) UAV by up to 47 miles and increase endurance from 3 hours to more than 5 hours. This was made possible by replacing the original battery power source on the Skiron-X with a compact hydrogen fuel-cell on the XLE supplied by Intelligent Energy (IE). The Skiron-XLE can be equipped with a gimbal mount electro-optic infrared (EO/IR) sensor and is aimed at the military/security reconnaissance role.

When fuel-cells are mentioned, some people may still think of the liquid oxygen/hydrogen sphere that blew up Apollo 13. Fortunately, however, technology has moved on significantly since this less commercial design of the 1960s. As an example, according to the company’s spec sheet, the Department of Transportation (DOT) certified IE-Soar-800W fuel-cell and hydrogen regulator offers 400 w for up to 5.9 hours. Hydrogen/oxygen gasses are combined across two semi-permeable membranes to generate power — no frozen gas-slush stirring is required.

Meanwhile, progress towards eVTOL air-taxi capability took a step forward for Archer and its Midnight aircraft. Stellantis has invested an additional $55 million into Archer’s efforts to build production capacity for up to 650 aircraft per year at its planned 350,000 sq ft facility in Georgia, scheduled to be completed in 2024.

Archer’s Midnight eVTOL. (Photo: Archer)

To clarify Stellantis’ background – the company includes manufacturers Fiat-Chrysler and Peugeot, which have merged to form the fourth largest vehicle company by sales behind Toyota, Volkswagen and Hyundai. Stellantis has a strategic funding agreement with Archer and the latest investment follows the milestone first test flight of Midnight where the successful transition from vertical lift to forward flight was achieved. The European conglomerate has also acquired up to $110 million in Archer shares on the open market and through this funding initiative.

Stellantis is working with Archer to bring its manufacturing expertise to the fabrication of Archer’s composite air taxi. High-volume car manufacturing and eVTOL building have a lot in common, and there is clearly common interest for a giant car company to gain access to the new eVTOL market.

To recap – GA-ASI has joined the CCA team with the first flight of the AFRL X-67A unmanned UAV, while Kratos continues with further testing of the Valkyrie CCA UAV with several U.S. forces. The latest generation of hydrogen fuel-cells is now extending the range and endurance of Aurora’s Skiron-XLE, while more investment flows in the eVTOL air taxi market.

<p>The post Unmanned systems updates first appeared on GPS World.</p>

DroneDeploy acquired a couple of software image acquisition and robotics companies in recent years – both StructionSite (2022 acquisition, San Francisco) and Rocus (2021 acquisition, New Zealand) are now part of DroneDeploy, widening their jointly addressable markets.

Drone Delivery Canada (DDC) is in the process of merging with Volatus to bring a combined service and equipment capability to market. Both companies are currently listed on the Toronto Stock Exchange and will trade under DDC’s stock symbol “FLT” following the completion of the merger, anticipated by the end of Q3 2024. DDC provides a unique Condor cargo UAV capability, remote operations center, cargo infrastructure and operations software, while Volatus provides UAV services, training and equipment sales to enable a path to market for the combined company.

Condor UAVs can carry approximately 400lb of cargo. (Photo: DDC)

Joby has been a leading participant in the emerging eVTOL air-taxi market segment, and acquired radar developer Inras GmbH in Linz, Austria in December 2021. The small Inras team brought advanced radar technology to Joby’s eVTOL development to provide onboard sensing and navigation.

Now Joby has also acquired the autonomy division of Xwing, which brings, according to the Joby website, “autonomy, including vision system processing, detect and avoid algorithms, mission management and decision making, ground control stations, remote operations and also the integration of Artificial Intelligence (AI) and machine learning algorithms.”

Joby’s two flying pre-production eVTOL aircraft (Photo: Joby)

The Xwing Superpilot software has previously enabled autonomous ‘gate-to-gate’ flight, 250 self-contained flights and 500 auto-landings with a Cessna 208B Grand Caravan for demonstration/tests. This system resulted in an official project designation for the certification of a large unmanned aircraft system (UAS) by the Federal Aviation Administration (FAA) in April 2023, and an Air Force Military Flight Release in 2024. Joby expects the acquisition to not only further long-term autonomous civilian capability — initial FAA certification is anticipated with piloted aircraft — but also to support existing and future business with the United States Department of Defense (DOD).

Meanwhile, Airbus is taking a similar approach by teaming with Helsing in Europe to integrate AI into a future Airbus unmanned Wingman concept aircraft — a UAV designed to fly with and be controlled by front-line manned fighter aircraft. Alongside growing European force requirements, Airbus envisages a lower-cost, attributable, UAV commanded by manned aircraft that could dispatch the Wingman for target reconnaissance and destruction or electronic jamming and deception of enemy air defense systems.

Airbus and Helsing CEOs with Wingman model.(Photo: Airbus)

Both Joby and its rival Archer have also received FAA Part 135 certification, which allows them both to run an air-taxi operation. Neither has yet obtained FAA authorization for their eVTOL aircraft, but both appear to have a clear mandate from the FAA for the steps necessary for those certifications. Both intend to operate existing certified fixed-wing aircraft as air taxis in the meantime under the Part 135 authorization.

While browsing through the FAA’s Special Class Airworthiness Criteria for the Joby Aero Model JAS4-1 Powered-Lift, published on the Federal Register, I learned that the task to certify a brand-new category of aircraft is huge — not big, absolutely gigantic.

FAA put together a draft of proposed cert criteria and put it out for comments to interested government agencies and industry — a whole slew of comments were received, which the FAA reviewed. The FAA incorporated some and discarded others. Just the response to these comments goes on for many pages — there were a lot of comments. Nevertheless, just skimming through FAA’s responses to these comments was a significant undertaking, never mind reviewing and understanding the basic requirements for, say, the two-performance option. Imagine what eVTOL operators have to go through to demonstrate that they meet the steps to achieve FAA certification.

The cert basis for Joby appears to be a combination of fixed wing and helicopter requirements, plus more to address the novel electrical propulsion system and the batteries that provide its power. Two levels of performance standards are set out — an “essential” level and an “increased” level. The 42 organizations that commented on the draft requirements included worldwide aviation agencies, eVTOL and aircraft companies, industry associations and major components suppliers, the Association for Uncrewed Vehicle Systems International (AUVSI) and some individuals — a huge group of involved and impacted organizations.

Joby applied to the FAA in November 2018 for certification of its Model JAS4-1 powered-lift eVTOL. Joby has been supporting just the activity related to certification for six years to date. All the other eVTOL developers are at a very similar stage as they try to get their aircraft into service carrying people and generating income.

Most eVTOL developers have major sponsors familiar with the certification process. Otherwise, the effort would just be too costly, never mind the cost of proving the capability to operating customers, the country as a whole and capturing the imagination of intended users. Plus, of course, building and qualifying the test vehicles, and the operational infrastructure to allow these eVTOLs to land, pick up customers and fly them to somewhere near their destination. The length of time to do this over so many years has broken many unwitting start-up companies. Achieving this goal can be incredibly difficult without the substantial financial resources of major companies such as Airbus, Boeing, or major airlines.

Moving from UAV to passenger airplane is something not to be taken lightly. As a potential future passenger, just keep waiting for your first flight in an operational certified eVTOL. Several of the contenders have targeted 2026, but who knows? I wish them the best of fortune and they’ll need it!

<p>The post Unmanned systems updates first appeared on GPS World.</p>

The ongoing conflict between Hamas and Israel, along with the unrest in various universities across the United States in support of Gaza Palestinians, and the continued aggression by the Houthi rebels in Yemen against shipping, are impacting several aspects of our lives, including the rising cost of gasoline.

Since the United States began seeking out Houthi strongholds, it is now being reported that another MQ-9 Reaper drone has been shot down – making an apparent total of five such expensive U.S. UAVs lost over and around Yemen, according to US military reports.

Screenshot of a Houthi-released video of the downing of the MQ-9 Reaper drone (Photo: UAS Vision)

At $30 million each, compared to about $2 million for a surface-to-air missile, the Houthis are apparently ahead on cost. With a 50,000 ft ceiling, the Reaper is capable of avoiding short-range surface-to-air missiles. However, more visual or infra-red (IR) low-level detail may have been sought on this mission. In response, the U.S. military reported the downing of five Houthi UAVs over the Red Sea.

According to a Defense Intelligence Agency (DIA) report, Iran is supplying the Houthis with attack UAVs and longer-range missiles, which are often, if not always, re-assembled, repainted and re-named locally. The DIA said that one of the favorite Kamikaze UAVs used is the Iranian Shahed-136/Houthi Waid-2, which is reported to have a range of almost 1,600 miles. Neither side has yet acknowledged which drones were brought down by the United States.

Shahed-136 (Photo: bbsferrari / iStock / Getty Images Plus / Getty Images)

However, around the same time, it was reported that perhaps two Houthi missiles hit the MV Andromeda Star oil tanker with reportedly little damage — no casualties were reported on the ship as it continued towards its destination Vadinar, India. Another ship, the MV Maisha, avoided a third missile. The missile landed nearby in the water, but the vessel put some distance between itself and the MV Andromeda, continuing safely.
The US/UK forces operating in the Red Sea have countered the more than 100 Houthi attacks on shipping with several airborne strikes on Houthi facilities. This renewed Houthi action over the weekend is thought to have been possible because they were restocked with weapons following the US/UK airstrikes, which slowed their attacks on shipping.

Hence the renewed threat to oil tanker traffic in the Red Sea has raised the already high threat level, and increased oil and gas prices at the pump are one of the consequences.

Meanwhile, Pakistan has bought 10 additional Chinese Caihong-4, which reportedly look and perform very similarly to the MQ-9 Reaper.

Caihong-4 looks very similar to the General Atomics MQ-9 Reaper
(Photo: OE Data Integration Network (ODIN))

The CH-4 can be used for both attack and reconnaissance. It features a flight endurance of 30 to 40 hours, a range of 2,200 to 3,100 miles and can carry up to six weapons.

This brings Pakistan’s complement to 20 CH-4 UAVs. The new purchase may be to offset India’s purchase of 31 General Atomics MQ-9s, which is included in a huge, recently approved $3.99 billion weapons purchase from the United States. The two countries continue to feud over the contested Kashmir region.

AeroVironment (AV) has developed an add-on for fielded Puma class hand-launched reconnaissance UAVs, which brings autonomy and machine-learning to a worldwide, mostly military fleet of thousands of air vehicles. Referred to as the Autonomy Retrofit Kit (ARK), with AVACORE software, the new update allows operators to command and control one or more vehicles autonomously. This provides computer vision capabilities and enables connection to a distributed, mobile comms network to access data for several separated operating groups.

ARK retrofit kit for Puma 3AE and LE UAVs (Photo: AV)

According to AV, autonomous operating tasking is possible when communications are jammed and the UAV is then still able to execute its mission without manual input. Updated computer vision allows finding, classifying, positioning and daylight or nighttime tracking of objects such as people, vehicles, aircraft and ships. AVACORE includes several software interfaces for different autopilots, sensors and radios to provide integration flexibility.

A neat way to provide significantly enhanced capability for already fielded airborne vehicles when they have some downtime.

Finally, we have a short introduction to a new transport UAV being put together by a California company called MightyFly. The company is led by a woman who was highly instrumental in the success of the flight controls for the Zipline UAV, which is still blazing drone delivery trails overseas and now in North America — with more than one million deliveries. With advisory input from a retired FedEx exec, the team at MightyFly seems well on their way with both a Federal Aviation Administration (FAA) approved Part 135 application and a 20 mile ‘point-to-point’ flight corridor approval for test flights.

Cento gen 3 cargo drone (Photo: MightyFly)

The MF-100 prototype made its first flight and demonstration delivery in April 2021, while the third-generation Cento flew for the first time in December 2022. Cento has a 6’ x 1’ x 1’ cargo hold that can accommodate 96 small USPS packages, weighing up to 100lb and Cento and later models are expected to have a range of 600 miles at up to 150 mph. While their UAVs are currently all-electric, the plan is to add a gas/rotary engine to charge batteries to achieve this forecast range for the drone.

MightyFly has significant support from the U.S. Air Force Agility Prime program and the Air Mobility Command, who continue to invest in autonomous cargo developments as an alternative to leasing helicopters to transport parts, medical supplies and more. MightyFly came up with an auto-loading capability, which resolves the issue of a potentially changing weight and balance of a last-mile cargo drone.

<p>The post Unmanned systems updates first appeared on GPS World.</p>

K1000ULE in flight. (Photo: Kraus Hamdani Aerospace)

There was a lot of press noise in December 2023 about DOD’s Replicator program– which has been interpreted as a project to field thousands of U.S. UAVs to counter a perceived weakness in the face of China’s options for waging UAV war. Then there was a move by the Replicator program office to better explain its approach. It was reported as having at least four concurrent elements:

1. Encourage U.S. industry to conceive and implement ways to overcome the new aspects of conducting war and possibly use more UAVs more often.
2. Let China know that the United States is already on the move to not only keep up with but exceed Chinese capabilities.
3. Overhaul the extremely burdensome and slow existing DOD procurement machine to make large, rapid acquisitions.
4. Invigorate DOD military services to quickly adapt to find ways to use UAVs in multiple offensive and defensive roles.

Presumably, lessons learned in Ukraine — where both sides have been throwing both improvised and specially designed explosive drones at each other — and U.S. Red Sea encounters with Houthi rebels — have helped to frame some of Replicator’s objectives.

Anyone who has labored through a DOD request for proposal (RFP), RFP response, competitive re-bid and maybe even more competitive re-rebid that potentially led to months of questions and waiting leading to an ultimate reward or disappointment can imagine what hoops the procuring agency had to jump through. They can also imagine the time that elapsed from the definition of a requirement to a written firm procurement specification, and approval of a procurement package.

Never mind the allocation of procurement staff, establishing a budget and then processing of possibly multiple responses – this is a complex, arduous and time-consuming task for both industry and the procurement agencies. With help from the Defense Innovation Unit (DIU), it is anticipated that acquiring and fielding thousands of commercially available autonomous drones will now go quicker.

Imagine the inertia needed to change the way that military services use the materiel they’ve acquired and how difficult it might be to change what is bought and how it is used at the very front end of a war effort. When the opposition chucks many, small, inexpensive, airborne bombs at you and you do not have an immediate answer other than a limited number of multi-million-dollar interceptor missiles, it can be very painful. Matching drones with drones is essential.

Replicator was initially envisaged as a $1 billion program over two years to counter this and other problems for the warfighter.

On March 23, Congress finally passed the FY 24 $825 billion defense spending bill — almost six months late — which contained $200 million for Replicator, and DOD began to scramble to find an additional $300 million for the program’s first year. It should work out as there is money currently unspent from the FY23 budget that DOD has already requested Congress to re-allocate, and there is only a little more than six months left for this fiscal year anyway.

It is rumored that AeroVironment, with its Switchblade 600 semi-autonomous, one-way Kamikaze UAV, may benefit from an early Replicator procurement. With an anti-armor charge, Switchblade weighs about 50 lb and can fly for 24 miles and up to 40 minutes before engaging its target, allowing adequate time for manual intervention.

The U.S. Navy has selected a solar-powered UAV from a California start-up because it is the best demonstrated commercially available option for their Marine Corps scouting group.

The K1000ULE from KHAero in Emeryville, California is a long-range reconnaissance UAV.

With 24-hour flight endurance, extremely quiet and virtually radar-undetectable, the UAV provides the Marines with a suitable scouting tool – almost a launch-and-forget facility for day and night, most weather recon activities. It is also a relatively low workload for a team of only three to five personnel to transport and operate.

With vertical take-off and landing capabilities, the K1000ULE is ideal for covert autonomous operations from unprepared areas that a small squad might secure. The mission equipage includes full-motion video with target identification and classification and a secure communications systems.

With anti-jam, anti-spoofing multi-constellation GNSS, the vehicle can operate reliably in most signal-denied areas. It finds and automatically uses thermal columns to soar up to 20,000 ft and loiter undetected. It is capable of beyond visual line of sight (BVLOS) flight, can carry ADS-B for airborne collision avoidance and can be operated in swarms by a single operator when required – quite some UAV!

The Kratos XQ-58A Valkyrie Wingman UAV was developed to work with and on-behalf of high-end airborne assets, such as the F-22 and F-35, and is termed an ‘attributable’ adjunct to these ~$90 million fighter/ground-attack aircraft. Autonomous, driven by AI, and stealthy, the jet-powered UAV carries General Aviation electronics, along with other military communications. It is said to cost in the $5 to 10 million range — which makes it somewhat disposable if it is sent into a “tight or risky” location from which its fighter escort should hold back.

With a 3,000 miles range, 45,000 ft ceiling and carrying capacity of up to 1,800 lb of under-wing armaments, the aircraft can be controlled from an accompanying aircraft as a “Loyal Wingman,” or from the ground and be dispatched to carry out an autonomous, independent mission, requiring approval by a person to release weapons.

The XQ-58A was recently flown with two U.S. Marine Corps F-35 fighter jets at Eglin Air Force Base, Florida to demonstrate the capability for electronic attack and to fly alongside these fifth-generation high-end aircraft. The UAV autonomously detected, classified, and positioned multiple simulated targets during the exercise and provided target-tracking information to the F-35s.

The “Loyal Wingman” concept is still being developed and there are other companies, including Boeing Australia, flying competing prototype UAVs.

So, a more mil-spec tone to this month’s UAV updates, nevertheless a short recap of recent interesting unmanned, autonomous aircraft developments.

<p>The post Unmanned news first appeared on GPS World.</p>

Not sure what’s cooking in my home State of Florida on approval of anticipated vertiports for use by eVTOL (electric Vertical Take-Off and Landing) and existing helicopter-type aircraft. Florida Department of Transportation (FDOT) published the findings of a state-formed aviation group in 2023 which appear to be pretty reasonable recommendations to ease approval of future vertiports – something seen as a major step forward for the introduction of eVTOL air-taxis in Florida. The Florida House passed Bill HB 981, which incorporated the FDOT findings and sent it to the Florida Senate for approval.

Now, Senator Gayle Harrell has introduced an amendment to the bill for review by the Florida Senate, which seemingly adds unwanted restrictions. So, the Association for Uncrewed Vehicle Systems International (AUVSI) released an article criticizing the Senator’s proposed legislation as presenting additional hurdles for eVTOL introduction. AUVSI’s concerns with the Senate version focus on restrictive zoning language, which the Senator’s version has included as follows:

“Ensure that a political subdivision of the state does not exercise its zoning and land use authority to grant or permit an exclusive right to one or more vertiport owners or operators and authorize a political subdivision to use its authority to promote reasonable access to advanced air mobility operators at public use vertiports within the jurisdiction of the subdivision.”

In addition to the AUVSI article, an Advanced Air Mobility (AAM) coalition of key industry leaders — including AUVSI and BETA, Eve, Ferrovial, Joby, Lilium, Vertical, and Skyports Infrastructure — sent a letter with critical comments directly to Florida House leaders. AUVSI has been and continues to be supportive of Florida DOT’s AAM plan and recommendations, and has supported the House version of legislation.

AUVSI believes Senator Harrell’s version would have created uncertainty and provided anti-AAM voices with a powerful tool to delay vertiport construction through drawn-out litigation. This language was widely viewed as problematic by both industry and lawmakers with whom AUVSI has collaborated during Florida’s state session.

Fortunately, on March 7th the Florida House refused to concur with the Senate’s amendment. Now, however, the bill appears to be stalled and the Florida Legislature has packed up and gone on vacation for the summer.

As things have progressed, we initially had the B2 ‘Spirit’ Strategic Stealth Bomber, a world first for the USAF and Northrup Grumman who built and fielded the secret, 172 ft wingspan, ‘radar-invisible’, tailless, long-range, defense-penetrating aircraft that has become a legend in its own right. Introduced in 1988, only 21 were produced.

Then we had the 66ft wingspan RQ-170 ‘Wraith’ Stealth-UAV built by Lockheed Martin for USAF/CIA and introduced in 2007.  Used in a reconnaissance role, some have hinted that it may have replaced the U-2 spy plane in some roles – nevertheless, it’s a big drone that could imply long-range, high-altitude snooping.

So now enters the Chinese ‘Sky Hawk’, a jet-powered, low-observable drone with only a 23 ft wingspan; which has an uncanny resemblance to both the B2 Spirit and more so the RQ-170 Wraith.

We are told that the design of this UAV has recently undergone significant ‘enhancements’ and that flight testing of the variant has begun. Although smaller than the US RQ-170, the design is intended to enable ‘stealthy’ overflights of other territories. One of the recent additions is a V/UHF communications capability and the potential that brings for in-flight collaboration with fighter aircraft (aka US Loyal Wingman program) and autonomous operations once instructed.

Inspecting areas inside operational facilities can lead to major difficulties for first-hand physical access by maintenance/inspection personnel. Flyability in France has developed a drone that can operate inside a spherical cage encasing the whole vehicle, while still being able to receive radio commands and transmit video and data. Elios 3 is the latest product, which has been used in numerous successful inspection missions and has collected video to verify detailed machine and plant status.

Now a critical area of verification which has been especially difficult to obtain has been added, which enables the measurement of object thickness using Ultrasonic sensing. The Ultrasonic Testing (UT) that the new probe makes possible allows thickness measurement of building walls, pipe walls, corrosion build-up, beams and a whole slew of previously unmeasurable, hidden features that may have gone without full inspection in the past.

Customers of Flyability’s inspection drone in the oil, gas, chemical, and maritime industries have encouraged the addition of thickness measurement for some time, so Flyability hooked up with Cygnus Instruments to develop the UT measurement probe which has now been successfully ‘grafted’ into the Elios 3 drone.

The Flyability drone can enter and explore closed/confined spaces that were previously dangerous and were perhaps almost impossible for people to physically inspect, so the addition of UT capability greatly enhances an already good thing!

So, efforts by Florida to quickly adapt to the coming age of eVTOL, and to Vertiports which will allow people to gain access to air taxis, seems to have come into some sort of conflict with AUVSI – the very proponent for this mode of UAV transportation. We’ll have to see how this is resolved, as it surely will be.

Technology catch-up by the Chinese developer of the Sky Hawk low-observability drone appears to be something to keep an eye on for a while. And meanwhile, new options for an autonomous indoor drone may be something the maintenance/inspection industry has been seeking for some time.

<p>The post Unmanned aircraft update first appeared on GPS World.</p>

NASA’s Ingenuity took this picture on Jan. 18, 2024. The sand-dune, rock-less area where Ingenuity last
showing the shadow of its damaged rotor blade. (Image: NASA)

It appears that the little extraterrestrial drone that could has come a cropper on Mars and now will not be flying again – it is permanently grounded. The Jet Propulsion Lab (JPL) crew managing Ingenuity was running a regular scouting trip over a featureless sand-dune area on Dec. 22, 2023. Suddenly, the UAV’s visual navigation system malfunctioned, which led to a hard emergency landing.

When the autonomous navigation system did not have any landmarks to match its digital reference map, it reverted to an emergency landing. Maybe the poor guy should have had a few moments to gather its airborne wits and to come down softly, but alas at the same time the connection with the rover was lost, he dove for cover and broke a chunk off at least one of the counter-rotating blades. This now apparently prevents further take-offs. Mars’ atmosphere is only 1% as dense as Earth’s, so those rotors need all their designed lift capabilities to grab enough ‘air’ and get the 4 lb helicopter airborne. The flight control system may be unable to cope with the resulting compromised lift profile. Either way Ingenuity’s flying days are over, according to NASA.

Conceptual design for the Sample Recovery Helicopters
(Image: Aerovironment/ NASA/ JPL)

Ingenuity completed 72 flights over the course of three years, surpassing its original 30-day mission to prove the possibility of a miniature, autonomous helicopter flight on Mars. After its initial four flights, NASA and JPL chose the UAV to scout out safe paths for the Perseverance rover from an airborne perspective.

All is not lost for Ingenuity, however. AeroVironment, the UAV manufacturer that co-developed Ingenuity with NASA/JPL, has been awarded another contract to design and develop two prototype ‘sample-return’ helicopters for NASA’s next major Mars expedition.

Building on Ingenuity’s design, the new UAV will have wheels and a grappling contraption to pick up sample tubes, which could assist in the Mars sample recovery mission. Perseverance is currently expected to be the lead in transferring cached sample tubes to the new Sample Retrieval Lander for return to Earth, but the new helicopters provide a different backup option on Mars for pick-up and transport of the tubes.

Back here on Earth, the latest tragic news from the Middle East — the UAV attack on the US Tower 22 military outpost in Jordan which cost three soldiers their lives and injured at least 34 others — appears to have been due to a lack of defensive capability. Earlier news releases indicated that the kamikaze UAV had arrived at the same time as the expected return of a U.S. UAV from the base, implying that defenses may have been taken down temporarily. It now seems that there was little active defense to prevent the attack.

The attacking UAV reportedly came in very low, and the base was unable to track its approach. The base is said to have defensive signal jamming capabilities, but without radar visibility of the UAV and knowing an attack was in progress, the jammers may have been ineffective or inactive.

Tower 22 was thought of as a low-risk-of-attack U.S. base, perhaps supporting another U.S. base in Syria with logistics, so no active drone suppression system had been provisioned. This assessment, and those for similar bases in the area and around the world, may perhaps have to be revised and sufficient active defenses may need to be installed.

While U.S. and Ukrainian forces deal with attacking drones, Iran has unveiled its latest addition to its arsenal of one-way killer unmanned aircraft.

Image: Iranian Military Media

Iran displayed the Shahed-238 in public in November 2023, so there may have already been enough time to get some of these very fast-flying vehicles through the manufacturing process and begin deliveries to Russia and Iranian proxy agents. The advantage of jet-power is of course significant speed over propeller-driven variants, while the range may be significantly less for the same fuel capacity. The disadvantage for the United States and Ukraine is that most fielded conventional UAV detection radars have difficulty seeing fast targets in time to activate and aim defensive weapons.

The situation for Ukraine and the United States in the Middle East appears to be worsening as large numbers of Iranian-supplied and locally manufactured kamikaze UAVs are pumped into the war zone and ‘hot spots’ in the Middle East.

It is sad that Mars aerial views may be limited as Ingenuity seems to be permanently grounded, and the Middle East doesn’t sound too safe to be hanging around in either! Further escalation of prices might be expected, too, as a good part of the volume of cargo ships settle into sailing around Africa. Let’s look for better news in the coming months.

<p>The post Final grounding for Ingenuity? first appeared on GPS World.</p>

3D-printed drone seized by anti-terror officers and rear access panel (Image: West Midlands CTU/PA)

The experts who analyzed the vehicle stated that it was only partially built and appeared somewhat ‘primitive’ in its construction. It would seem that an explosive charge or chemical weapon would need to be located with its fusing circuitry at the front end of the UAV, and maybe the enclosure was rather an access panel to aid the build process.

It is unclear whether the protruding black item towards the front of the UAV is either a GNSS or communications antenna. This antenna would normally be placed on the upper skin and relatively close to the autopilot or comms radio. It is possible that there is a communications/control signal antenna at the top of the vertical stabilizer. Rudimentary landing gear can be seen aft of the control surfaces of the wing, but the rear propulsion does not appear adequate for the size of the vehicle. Not a bad attempt to create an amateur UAV, but a pretty bad idea for the guy involved to intend it to be a kamikaze, one-way drone for ISIS — he received a 20-year sentence.

Both Russia and Ukraine continue to churn out new models of one-way UAVs, which they enthusiastically hurl at one another. Russia unveiled a new swarm drone known as ‘Product 53’ which apparently has the ability to seek and identify targets autonomously.

With a payload of only 3-5 kg it cannot inflict severe damage on major targets, but the plan is apparently to bombard an area with large numbers of Product 53 controlled as a swarm.

So, Russia’s latest software-driven, sophisticated kamikaze UAV is a far cry from the primitive, partially constructed, 3D-printed UAV which lead a UK court to jail its constructor. Much more was obviously made of his encrypted online contacts with ISIS and his intent to inflict potential death and destruction on behalf of a terrorist group.

On a far brighter note, a Defense Advanced Research Projects Agency (DARPA) project known as Control of Revolutionary Aircraft with Novel Effectors (CRANE), which first went out to industry for proposals back in 2021, has now moved into Phase 3 build and manufacture following a successful Phase 2 Critical Design Review (CDR).

Aurora Flight Sciences, a Boeing Company subsidiary, has been authorized to begin building a 7000 lb X-wing manned/unmanned aircraft. The aircraft is intended to prove out a design for aerodynamic control without the use of moving surfaces.

Illustration of proposed X-Wing aircraft (Image: DARPA)

Elevators, flaps, slats and rudders on conventional modern aircraft require significant internal hydraulics and/or cabling and actuators throughout the airframe, which add to the complexity, and potential failure modes, aerodynamic drag and weight. Most current UAVs emulate these flight control systems and use external control surfaces.

The DARPA X-Wing aircraft may use compressed air jets or even electrical discharges emitted at critical actuation points along its outer surface to ‘gently push’ the aircraft from its existing path through the airstream, which allows the remote pilot to maneuver the aircraft. Known as Active Flow Control (AFC) this technology has been prototyped to one extent or another in recent years, but this DARPA/Aurora project aims to prove the concept.

For the demonstration aircraft, normal moving control surfaces will be installed and retained. The aircraft will initially be flown using these standard airflow controls to form a baseline for how the aircraft performs. The control surfaces will then be locked down and the aircraft will be flown using AFC, and the performance will be compared to the standard controls baseline.

Understandably, the earlier phases of the project likely worked through the required control systems for the unique X-wing configuration. Aurora may have been well positioned to provide such flight control systems, autopilot and software from its store of Guidance, Navigation, and Control (GNC) technology — the basis for the operation of autonomous air vehicles.

Building illicit UAVs intended for terrorism may not be one of the best academic projects to undertake when you’re an ISIS supporter; Russia and Ukraine appear to be in a race to mass produce ever more sophisticated UAVs; and DARPA/Aurora appear to be headed to a relatively heavy prototype air vehicle demonstrating not only X-Wing technology, but also active flight control. Overall, there is a variety of news on UAVs in various configurations and applications.

<p>The post Kamikazi UAVs and X-Wings first appeared on GPS World.</p>