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Erik Snyman

Well-Known Member
Joined
Oct 9, 2019
Messages
53
Hmmm, pretty good names Ron. I haven't been so inventive with cat names. Of the 4 cats we've had over the years there was, kitty girl, kitty boy, white kitty and now again, another kitty girl. With dogs and ferrets, it's a different story.
Bob, "what's his name"
An easier one: the canine is Dawgg and the feline is Katt.
Erik in Oz.
 

billyvray

Well-Known Member
Joined
Aug 17, 2005
Messages
739
Location
Newnan, GA
Would be cool if one could make a flywheel launch for a small sailplane, using small high rpm engine on board. Then glide and recharge and use as needed. Not a motorglider, but a reusable lift engine.
 

proppastie

Well-Known Member
Log Member
Joined
Feb 19, 2012
Messages
4,418
Location
NJ
Or spin it up on the ground for a 5 minute powered launch. Somehow I think the weight would be more than a 20 hp 2 stroke and 5 minutes of gas. I leave the calculation of the flywheel to the student for homework.
 

SlowFlight

Member
Joined
Dec 31, 2016
Messages
5
Location
Alaska
Prop drag = negative pitch centered at the flywheel axle ahead of center of lift. Maybe if the flywheel were located at the tail, where the tail forces could shift the flywheel weight and the main would be sized for the increased torque weight. Then to control lift use the rudder for gyroscopic load induced changes, and the elevator for weight load ratio of effects... and for yaw... Then reverse gyroscopic load induction as the propeller becomes a windmill. Interesting.
 
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