Jet Power

A discussion restricted to the topic of hang gliding.
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The Oz Report
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Jet Power

Post by The Oz Report »

<div id="1548340131"><i>A little jet pod on the top</i><br><p>Gary Osoba writes:</p><p class="BN">I sold my ASW27B last week and made an agreement this week to purchase a JS1CJ. It has interchangeable wing tips with two spans. The 21m Open configuration has a max L/D 60:1. The photo is of it in 18m configuration with L/D max 53:1. The photo also shows the turbine sustainer deployed- a little jet that works with either span.</p><p class="BN"><img border="0" src="../pub/images/jetpod.jpg" width="640" height="237"></p><p class="BN">It is designed to get you somewhere if you need to or get home late if you make a dumb mistake. It's not designed with enough size to self-launch although you can do so on a long runway. Turbine has a range of 150 miles using sawtooth method of a few climbs at 73 knots indicated and then glides. Flies level at 104 knots indicated cruising speed with turbine but uses more fuel which reduces range to about 90-100 miles. Diesel or Jet fuel both OK. One switch deploys and starts the turbine or shuts it and retracts when you're done with it. Another knob for variable thrust. Very simple and reliable. No drag when stowed, very little when deployed.</p><p class="BN">This design really goes well at high speeds and with the polyhedral, handles and climbs beautifully. With water ballast in the wings it gets up to 720 kg MAUW so lots of inertia for dynamic soaring maneuvers.</p><p class="BN"><a target="_blank" href="https://www.youtube.com/watch?v=I67dMh7 ... ></p></div>
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Gary Osoba
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Re: Jet Power

Post by Gary Osoba »

Correction- photo is actually of a very slightly different 18m model from same manufacturer with same jet sustainer. Correct 3-View below.

Gary
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Angelo
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Post by Angelo »

So the tail fin is far enough back it doesn't get burned/melted by the jet blast?
I have from time to time scared myself. Even at the height of my powers, I was not in good health. But a furious metabolism preserves my physique, and I am considered a tribute to evil living. - Thomas McGuane, Panama
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Gary Osoba
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Post by Gary Osoba »

Yes. The curing temps on the composites are quite high, so they are very heat resistant.
Jay Z
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Post by Jay Z »

That's wild. Coming soon to hang gliders.
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Angelo
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Post by Angelo »

Already has. Skip to 1:40 for the actual flight. https://www.youtube.com/watch?v=_AXuy2-YoQY
I have from time to time scared myself. Even at the height of my powers, I was not in good health. But a furious metabolism preserves my physique, and I am considered a tribute to evil living. - Thomas McGuane, Panama
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Pat Halfhill
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Post by Pat Halfhill »

That looks like fun
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CloudHopper
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Post by CloudHopper »

Guys, we're all playing catch-up here. Should we just declare the winner and "hang" it up? :36_11_3:
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Mike B
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Post by Mike B »

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Angelo
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Post by Angelo »

Gary - I've seen stowable prop set ups, they are much bigger and seem more complicated- the prop has to be aligned vertically before the motor can be retracted. This seems a lot simpler, more compact, no torque and a better thrust line.
I have from time to time scared myself. Even at the height of my powers, I was not in good health. But a furious metabolism preserves my physique, and I am considered a tribute to evil living. - Thomas McGuane, Panama