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Influence of design on cost of operating airplanes (1922)
NASA Technical Reports Server (NTRS) · leaf 23
a-Xnitial rate of climb b-Cost (twin engine) Safety 'factor 8 c-Oost (single engine) Safety factor 8 a-Gost (win engine) Safexy fagtar 6 e-Oost (single engine) Safety factor 6 f-.'Jott {twin engine) Safety factor 4 g-Gost (single engine) Safety factor 4 Approx. reserve H?«(of engine), per cent of… … . 85 95 105 115 135 135 High speed at 5000 ft. in M.F.H. x 242220 18 16 14 12 10 8 Power loading, lb. per HP. (Series ox single ana twin Liberty enginea freight airplanes of constant minimum speed, of 5? M»PeH»- 10 lb. per sq.ft.; duration, 4 nr.) Fig. 10 Variation of cost ana climb with speed ana…NASA Technical Reports Server (NTRS)
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