Tests on Wilford gyroplane with rigid feathering rotor and fixed wing; lift drag and L/D of 4-ft rotor model; pitching moments throughout flight range for gyroplane of 1800 lb loaded 2.6 lb per sq ft of disk area.
Safety -- With performance
Aviation Eng
Aviation Engineering ; 7 , n 3
1932
2 pages
Aufsatz (Zeitschrift)
Englisch
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Construction hoist with high safety performance and safety system thereof
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