Aircraft

US Air Force backs Valkyrie's high-speed, amphibious jet-powered eVTOL

US Air Force backs Valkyrie's ...
Valkyrie combines electric VTOL with jet-powered cruise in an amphibious stealth package
Valkyrie combines electric VTOL with jet-powered cruise in an amphibious stealth package
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Valkyrie combines electric VTOL with jet-powered cruise in an amphibious stealth package
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Valkyrie combines electric VTOL with jet-powered cruise in an amphibious stealth package
These little fans will have some work to do at MTOW
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These little fans will have some work to do at MTOW
The HoverJet Eagle and Guardian are designed to be able to take off and land on nearly any surface, including water
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The HoverJet Eagle and Guardian are designed to be able to take off and land on nearly any surface, including water
Valkyrie says these aircraft will be able to operate in amphibious and hovercraft modes
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Valkyrie says these aircraft will be able to operate in amphibious and hovercraft modes
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Reno-based Valkyrie Systems Aerospace has received a research grant from the US Air Force to further develop its remarkable HoverJet Guardian concept, which combines electric VTOL and high-speed jet cruise with amphibious and hovercraft capabilities.

The USAF's AFWERX High-Speed Vertical Takeoff and Landing (HSVTOL) concept challenge sees the military throwing the floor open to a range of private companies in search of ideas that'll eventually lead to next-gen VTOL aircraft capable of going a lot quicker than current VTOL machines like the V-22 Osprey.

Valkyrie's HoverJet Guardian concept certainly seems to fit the bill. Essentially, it appears to be a powerful, optionally-piloted jet aircraft with an electric VTOL system built in.

The VTOL system appears to use a quadcopter layout, with four props (or perhaps eight mounted coaxially) hiding in holes in its fat wings. These get it off the ground in relatively civilized fashion, but then a pair of Pratt & Whitney 545c turbofan engines take over, adding a combined 8,200 pounds of horizontal thrust to the mix.

These little fans will have some work to do at MTOW
These little fans will have some work to do at MTOW

The result, claims Valkyrie, is a cruise speed of 340 mph (547 km/h), a transonic top sprint speed of 700 mph (1,127 km/h), and a whopping 15 hours of endurance at altitudes up to 40,000 feet (12,192 m).

This is no small bird. Measuring 24 x 30 x 6 ft (7.3 x 9.1 x 1.8 m), it'll weigh 4,200 lb (1,905 kg) empty. Add fuel, a pilot and/or up to 2,000 lb (907 kg) of cargo, and that little VTOL system will have to lift the Guardian at a maximum takeoff weight of 12,000 lb (5,443 kg).

That's considerably heavier, say, than the Joby S4, which is said to be around 8,820 lb (4,000 kg), and it uses fewer, smaller propellers. So those props are going to have to work hard. On the other hand, since it'll run primarily on jet fuel, energy storage won't be an issue at all, and the electric systems can be tuned for high power rather than efficiency.

High-speed VTOL is not all these things bring to the table, either. The Guardian, and its smaller brother, the Eagle UAV, are apparently capable of landing on water, and offering "three modes of operation: aircraft, hovercraft and amphibious." Exactly how the hovercraft mode works is a bit of a mystery at this point, but a VTOL aircraft capable of taking off and landing on nearly any surface, then flirting with the sound barrier once airborne, would clearly be a very useful platform.

Valkyrie says these aircraft will be able to operate in amphibious and hovercraft modes
Valkyrie says these aircraft will be able to operate in amphibious and hovercraft modes

"What makes the Eagle unique," says Valkyrie, "is the patented thrust vector control system, proprietary technology that enables it to operate in almost any terrain and/or adverse conditions."

The company has not disclosed how much AFWERX is providing in its "market research investment," nor has it publicly presented any prototypes. So it's unclear how far these aircraft have made it past the concept stage, even if Valkyrie claims they're "a product of over 25 years of engineering, testing and refinement, comprising seven generations of technological advancement."

The funding will allow Valkyrie to continue to develop the concept over the next six months, working with the USAF, USSOCOM and Collaboration.ai, the contractor that's co-ordinating the HSVTOL concept challenge.

“The HSVTOL Concept Challenge has surfaced an impressive range and caliber of solutions to help us understand how to build a new class of air vehicles," said Dr. Reid Melville, Chief Innovation Officer, Air Force Research Laboratory (AFRL) Transformational Capabilities Office. "We believe the organizations selected to receive market research investments at this stage have the potential to deliver truly groundbreaking innovation."

Check out a video below.

Valkyrie Systems Aerospace Hoverjet

Source: Valkyrie Systems Aerospace

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13 comments
13 comments
anthony88
Does it work like an Ekranoplan in hovercraft mode?
Tommo
That's a five-year-old video at the bottom, I'm guessing there's nothing more up to date. Also, what does the final wording mean: 'so that all may live' - it sounds a bit ominous..!
vince
Once Lithium metal batteries are perfected with 10 times the energy density of current LiON you can expect this same vehicle will be all electric eventually.
MarylandUSA
This sounds like the fake headline I wrote, in the 1970s, for a spoof cover of Popular Mechanics: "Amazing hypersonic VTOL aircraft runs on magnets---and you can build it yourself!"
dugnology
It's not going to take the place of a V-22 with rotors that small.
darkcook
Lot's of vaporware there, with fancy renderings. Cool looking machine, but probably won't look anything like that if it ever sees the light of day.
Michael son of Lester
While I like this concept, I really can't see it living up to the 700 MPH transonic speed hype. Just look at the thickness of the wing and the turbulence the openings for the fans in the wings would generate.
bwana4swahili
Would be a really eye catching drone for personal use!
Nelson Hyde Chick
It is so good to know we are always working on new more efficient ways to kill one another.
Username
When they say havercraft I think they mean ground effect. Hovercrafts need a skirt.
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