Military, commercial and private aviation activities; outline of aviation history to date; factors that have tended to stimulate or to retard aviation progress; present conditions and future trends; aviation lessons learned during war; lack of known constant factors for use in estimating initial costs, operating charges and maintenance expense constitutes great present barrier to aviation progress.
Commercial aviation's present phase
Soc. Automotive Engrs. -- Jl.
Society of Automotive Engineers -- Journal ; 18 , n 1
1926
3 pages
Aufsatz (Zeitschrift)
Englisch
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