A helicopter with a gear-driven rotating propeller
Stella Ames
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Published:2026-03-07 08:07:25
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A flying device with a propeller driven by a gear mechanism
It uses a rack and gear to convert linear drive into propeller rotation, pulling the rack to directly drive the gear under the propeller blade to rotate.
Core principle
Rack + Gear: Push and pull the rack up and down / forward and backward → The gear rotates
Gears connected to the propeller → The propeller rotates at high speed → Generates lift
It belongs to the reciprocating power: a push and a pull can make the paddle turn
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