Tom
March 24, 2019, 7:23pm
1
The retractable propeller is usually mounted on a mast that rotates up and forward out of the fuselage, aft of the cockpit and wing carry-through structure. The fuselage has engine bay doors that open and close automatically, similar to landing gear doors. The engine may be near the top or bottom of the mast, and newer designs have the engine fixed in the fuselage to reduce noise and drag.
Unlike TMGs, most gliders with retractable propellers are also fitted with a tow-hook for aero-towing or gr...
Just like landing gear is retractable on planes, the propellers might be retractable on awes, if they aren’t used for fine control of orientation / steering.
Ampyx Power AP-3 seems to have large foldable central propellers and tiny ones on the wingtips.
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Do you have any photos of the Ampyx propellers?
Tom
March 24, 2019, 7:26pm
3
Just what’s in the tweet I shared. They also have foldable propellers on AP2, visible for example here: https://twitter.com/AmpyxPower/status/1109116086732103683
(picture deleted, use link to see it rather)
Tom
March 24, 2019, 10:42pm
5
Didn’t upload it on purpose. Don’t have the rights. If you do, it’s on you… until Article 13 gets passed.
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