this post was submitted on 10 May 2025
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Vought-Sikorsky VS-300 helicopter in tethered flight, USA, 1939 (infosec.pub)
submitted 7 months ago by PugJesus@lemmy.world to c/historyporn@lemmy.world
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[โ€“] AtariDump@lemmy.world 3 points 7 months ago (1 children)

[โ€“] WaterWaiver@aussie.zone 4 points 7 months ago* (last edited 7 months ago)

That (chinook-style solution) only works if both rotors are the same size and speed.

Perhaps Sikorsky's tethers to the ground worked around the problem for that photo anyway. Not sure.