Merit rating equals speed times payload/horsepower in pound-miles per hp.-hr.; average data of load-carrying ability of more than 200 airplanes by groups and types. (See also - discussion p 242 and 252)
An efficiency formula for cargo airplanes
Soc. Automotive Engrs. -- Jl
Society of Automotive Engineers -- Journal ; 29 , n 3 ; p 241-242
1931
2 pages
Article (Journal)
English
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