Rocket Men

theodp writes "Slate reports on the guys who really, really want to fly, who got together the other week at the Niagara Aerospace Museum for the First International Rocketbelt Convention. To date, only 11 men in history have free-flown a rocketbelt (aka JetPack). More men have walked on the moon. Why? 'It's not a matter of if you get hurt, it's when,' says Eric Scott, an ex-stuntman who's in the exclusive club."

Comments

Gyroscopic stabilizers

[Anonymous Coward]

These people need computer-controlled gyroscopic stabilizers. A fly-by-wire system could dramatically improve the safety of rocketbelts. No doubt that would make them much more popular.

Re:Gyroscopic stabilizers

[jcr]

You can't do it on cheap gyros (read: you're probably spending $5-10k per axis),

Why not? There are gyros that model helicopters use that are cheaper than $100, and an RC chopper is a whole lot twitchier than something with the mass of a human being in it. If your flight only lasts for a couple of minutes, then you hardly need high-precision gyros that won't drift more than a degree per hour.

-jcr

Sounds like a job for real-time computers

[dpbsmith]

It's understandable that in 1961 the pilot needed to fly the rocket belt with only his own reflexes and semicircular canals to guide him.

But even in the late 1960s my aero-and-astro student colleagues told me that even the Boeing 727 was too unstable to be controlled by a human pilot using reflexes alone: it relied on "yaw dampers," servo mechanisms that amounted to electronic analog computers, to tame the raw behavior of the plane.

The Boeing 777 is a completely "fly-by-wire" design.

It seems to me that it ought to be possible to design microprocessor-controlled rocket belts that would be much easier and safer to fly than those of the 1960s. (Including, of course, electronic active noise cancellation in the helmet to provide at least some reduction of the "deafening noise 3 feet three feet from his ear."

Trying to fly the rocket belts described in the strikes me as rather like trying to fly a full-size, exact model of Langley's Aerodrome. It may be possible--for someone with the reflexes of a Santos-Dumont and the nerves of an Evel Knievel--but it's still just a stunt. The Wright Brothers achievement was ''not'' building an aeroplane that could get off the ground; it was building an aeroplane that they ''and others'' could get (relatively!) ''safely'' off the ground.

On the Fringe

[tb3]

The (strange/interesting/sad) part of this story is how far out the people involved are. I noticed there was no mention, either in the Slate article or the actual convention website, of these guys who claim to have the only functional rocket belt in existence. Then there's Juan Manuel Lozano, the Mexican inventor who claims to developed a break-through method for creating the 90%-pure hydrogen peroxide fuel needed for the rocket belt.

And then there's the whole RB2000 saga, which involved fraud, murder, and the disappearance of the only prototype. The full story can be found on the rocketbelt.nl site. Rocketbelt developers are out there on the edges with the ufologists, perpetual motion researchers, and free energy salesman, with the exception that rocketbelts can actually work!

The Alternative?

[webword]

Very light jets!

2006: The year of the very light jet

Very Light Jet Magazine

The Light Jet Age

OK, so they are a $1-2 million. That's a lot of money. From what I've read, however, these jet packs aren't that cheap either. (They're not mass produced so the price hasn't dropped at all.) If you bought part of a jet as a time share, with say 20-50 other people, the price drops significantly. It is a viable option for some people.