US Youth glider program like the Lithuanian one

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Victor Bravo

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The clothesline loop system will yield a much better overall flights-per-day or flights-per-hour result for training, allowing each of a dozen kids to get in 20 or 30 takeoffs or landings in a day. So that outcome is well worth the problem-solving to get the loop system to work.

The whipping can be controlled by coming up with some kind of chute or guides that direct the cable (and the 100 foot "glider leash" around the pulley.

Yes that will of course require something other than just a plain pulley, but once again the outcome is well worth it.
 

Hot Wings

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The clothesline loop system will yield a much better overall flights-per-day or flights-per-hour result for training,
Agreed - and why reinvent the wheel? The Latvians have already proven the system.

The slingshot bungee idea sounds like a real problem to me. Kind of like a solid rocket booster. Once you pull the pin there is no way to stop what will happen. With a ground winch, and to a lesser extent vehicle tow, the operator has the option to stop the motive force.
 

DBN

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If the glider is towed by the truck (with a bar or a cable), how much time/distance will there be between a hard crash of the glider and the driver learning of it, applying the brakes, and getting the truck stopped? If it is dragging the wreckage and student for that time, it might be a more serious situation than if the light glider crashed while in free flight.
Emergency decoupling pin (at the glider) operated by the observer in the truck bed?
Generally agree with your concerns - We too believe the communications are not instantaneous enough to make a hard connection work.
 

DBN

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Can a modified version of a scooter tow be done like they do with Hangliders. I have seen them with a cable that runs low to the ground and the glider is on a bridle and its in ground effect during the flight.
Our team is now working on a modified scooter rig for our Spring (NOW! Yeah!) taxi and hopping testing. More on this as we make progress.
 

DBN

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Our two American GEM's are now easily loaded and unloaded from the 22' trailer. Leaves us enough room in the front for the POP rig and all the ground tow line hardware. MIGHT allow for the ground tow line power unit as well, but that could sit in the pick-up truck or Van back space easily.

Photo is of the two (Kolb) firefly's as American GEM's - no motor and a safety cage installed - parked in our trailer.
tempImageCd2RN7.pngtempImagecw1Tcz.pngtempImageLMT0gR.png
 

Victor Bravo

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DBN that looks GREAT ! Congratulations on having the two gliders in one trailer. If you can figure out the method of safely doing the clothesline towing, you will have a tremendous opportunity.
 

DBN

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This morning we got American GEM 1 out (Left #2 in the trailer) for a Fly-in Pancake breakfast - Westfield IN. Thank You EAA! Got several younger ones into the GEM for stick & rudder understanding. Did not do the PoP (Plane on a Post) as there was no breeze. Note the weight bag on the boom - with two 5 lb weights - one on each side - we can slide the 10 lb mass fore-aft and get the GEM to balance on the wheels with different weight youth learning basics of controls.

Next step is a version of a "wake board" tow system we are building for ground taxi - hopping and maybe aviating in Ground Effect (Hence GEM) if we can tow at 25 mph. More information as we get to actual wheels off ground on a grass runway later this spring.

Thanks to anyone who can help us with advice on the ground tow line system power unit. Plan is a snowmobile (donated already) power unit to a Variable Speed Transmission with multiple sheaves / pulley wheels for proper tensioning. tempImageMIRQbE.pngtempImagePUPds4.png
 

DBN

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Because of the interest - I am starting a new thread American GEM Youth Flight Training System - Ground Effect Glider - Please watch for it! Thanks! (We start Ground flight testing on grass next week - weather permitting - photos soon!)
 
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