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Posted

I've been looking for that video for years! I saw it at a Bell safety presentation, they used it to show the different airflow patterns in a hover vs. translational flight. Great video for that reason

 

 

 

Looks like fun!

 

Apparently, starting that thing involves being surrounded by a shower of liquid hydrogen peroxide ( = rocket fuel), which is then ignited. Not to mention that your seat is also the tank.

 

Hiller built some tip jet prototypes like this decades ago, but it turned out to be a rather impractical way to drive a rotor.

Posted

I've been looking for that video for years! I saw it at a Bell safety presentation, they used it to show the different airflow patterns in a hover vs. translational flight. Great video for that reason

 

 

 

 

 

Apparently, starting that thing involves being surrounded by a shower of liquid hydrogen peroxide ( = rocket fuel), which is then ignited. Not to mention that your seat is also the tank.

 

Hiller built some tip jet prototypes like this decades ago, but it turned out to be a rather impractical way to drive a rotor.

That doesn't sound quite right. Usually the H2O2 is around 90% dissolved in water and the catalyst (often silver mesh) causes it to break down into superheated steam and O2. Here's another link I found.

H2O2 copter

Posted

must have been a different fuel they were talking about then. The one I was referring to had to be ignited with a flare on a (looong) stick..

Posted

must have been a different fuel they were talking about then. The one I was referring to had to be ignited with a flare on a (looong) stick..

That sounds like a ram jet helicopter. It would look similar. Like this.

Posted (edited)

Never seen this before, very cool video! Hydrogen Peroxide chopper tipjet chopper.

 

 

 

That was based here in Tucson for a while and I hovered it for a few minutes. They had two different tip jets and when I was trying it they had the bad jets on it. Spit unburned out a bit . It has full manual throttle and twisting the cyclic controlled yaw...no pedals.

 

It was at Oskosh last year.

 

Jerry

 

I have some video of me bouncing it around on the ground when it ran out of power and the rpm drooped...see if I can find it.

Edited by IFLY
Posted

Any other insights on it IFLY? Were you impressed by it? Did it seem under/over powered? I'm fairly interested in it and would love some info from someone who has seen it, since there isn't a lot you can gleen out of the few videos out there.

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