Quotulatiousness

September 29, 2010

Transformer TX project initial funding awarded to AAI Corporation

Filed under: Military, Technology — Tags: , , , , — Nicholas @ 12:14

Remember the “Flying Jeep” proposal? It’s still being pursued, as the initial funding for a flying gyrocopter/SUV has been awarded by DARPA:

Transformer TX, as we have previously reported, is intended to produce a vehicle able to drive on the ground with similar performance to a Humvee or other offroad vehicle. It must also be able to take off vertically with 1,000lb of passengers and payload aboard and fly about at altitudes up to 10,000 feet at speeds equivalent to normal light aircraft.

Perhaps best of all, the Transformer TX is also intended to be fully automated, capable of flying itself with only the most basic guidance from its human operator — who would not, therefore, need to be a highly trained pilot.

Admittedly, I know almost nothing about flying, but this sounds like getting something for nothing (that is, aren’t there laws of physics against this?):

The SR/C idea is basically a winged, propellor-driven light aeroplane with a set of free-spinning autogyro rotors on top. It’s not a helicopter: the engine can’t drive the rotors in flight, and a sustained hover isn’t possible. Nonetheless, though, the CarterCopter can take off vertically as required by Transformer TX rules.

It does this by having weighted rotor tips, meaning that a lot of energy can be stored in the spinning blades (rather as in a flywheel). Sitting on the ground, a small engine-driven “pre-rotator” assembly can gradually spin the rotors up to high speed. The pre-rotator, pleasingly, doesn’t have to transmit a lot of power — thus it is lightweight, cheap and simple compared to a helicopter’s transmission. Nor is the engine required to deliver the massive grunt required to keep chopper blades spinning hard enough to support the aircraft.

Once the rotors are at takeoff speed, the pre-rotator is declutched, the prop engaged and the pitch of the rotors pulled in so that they start to bite air. As they slow down, the energy stored in their whirling weighted tips blasts air down through the disc and the aircraft leaps vertically into the air in a “jump takeoff”.

Sounds amazingly like pulling yourself into the air by your own bootstraps . . .

Still, I’d like to eventually get that flying car I was promised all those years ago.

September 9, 2010

Terrafugia moving swiftly towards terribly expensive, impractical

Filed under: Technology — Tags: , , — Nicholas @ 12:09

The ever-hopeful reporters at The Register‘s flying-car desk are lowering their expectations for the Terrafugia Transition:

The firm behind the world’s most plausible near-future flying car has pushed back delivery dates again, and suggested that vehicles may wind up costing substantially more than had been planned.

Terrafugia Inc, engaged in developing the Transition “roadable aircraft”, made the announcements in a statement issued yesterday. The company says it is now setting up for “low volume production” in a new facility in Massachusetts, and that this “could allow low volume production to begin as early as late 2011”.

The most recent Terrafugia forecast had suggested that initial deliveries would begin in 2011, but it now appears that actually the company will only commence building the aircraft at that stage. Furthermore, Transitions were originally expected to sell for $148,000: Terrafugia now says the initial price is “expected to be between $200,000 and $250,000”.

Along with the pushback in production dates, the design has been down-rated for carrying capacity: now only 330 pounds of passenger and cargo when fully fueled. That won’t be enough for two average American men, never mind their kit.

July 8, 2010

“Flying jeep” proposal

Filed under: Military, Technology — Tags: , , , , — Nicholas @ 09:09

The Register looks at the “Tyrannos” flying jeep:

Who remembers the “Transformer TX” flying-car project, intended to equip the US Marines with a small four-seat vehicle able to drive about on the ground like a jeep, hover like a helicopter, or fly like a plane? The first team to publicly offer a contending design has now stepped forward.

That design is the “Tyrannos” from Logi Aerospace, allied with other companies and organisations including the South West Research Institute and Californian electric-vehicle firm ZAP.

The Tyrannos is nominally intended to provide Marines with the ability to leapfrog over troublesome roadside bombs, mines, and ambushes while remaining able to drive on the ground as they normally might. However, it promises to be much quieter than ordinary helicopters in use and far easier to fly and maintain.

If the Tyrannos can do all its makers claim, it really does have the potential to become the flying car for everyman.

That last sentence really does wrap up the situation: if it can do all that is claimed, it’ll be a fantastic new toy for the military and (eventually) lead to the flying cars we were promised forty years ago. The specs seem hopelessly optimistic, but perhaps I’m just jaded because I don’t have a flying car of my own yet . . .

Reader beware, however. The Transformer TX project is being run not by the Marines themselves but by DARPA, the Pentagon crazytech agency which won’t even touch a project unless it is extremely unlikely to succeed.

“Give us ideas that probably won’t work,” that is DARPA’s motto: and the Tyrannos team assembled their design specifically to DARPA requirements. And, let it be noted, they have yet to satisfy even DARPA’s very relaxed rules on what kind of ideas should get taxpayers’ money spent on them.

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