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A comment on Zipline: Drone delivery of medical supplies. Parent comment

Re:Zipline: Drone delivery of medical supplies by TylerE on Sunday June 07, 2020 @09:26PM (#23452690)
I wonder if a pulse jet (as used on the V-1) would be an option?

I've seen hobbyist level plans for them, and a pulsejet requires zero moving parts, so reliability should be excellent. The geometry of the engine does all the work.

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Re:Zipline: Drone delivery of medical supplies by baybal2 on Sunday June 07, 2020 @09:31PM (#23452717)
> pulsejet requires zero moving parts, so reliability should be excellent.

Valves, and pumps are moving parts too.

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Re:Zipline: Drone delivery of medical supplies by TylerE on Sunday June 07, 2020 @09:32PM (#23452725)
Modern pulsejets don't use valves.

https://en.wikipedia.org/wiki/Valveless_pulsejet

Fuel can be either gravity fed or possibly a pressurized system (e.g. fill the deadspace in the tanks with compressed nitrogen)

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