Circular 15. Airworthiness (Air): The Effects of Atmospheric Humidity and Temperature on the Engine Power and Take-Off Performance of a Hastings I

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Circular 15

Airworthiness (Air): The Effects of Atmospheric Humidity and Temperature on the Engine Power and Take-Off Performance of a Hastings I

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CIRCULAR JUNE 1950 AIRWORTHINESS THE EFFECTS OF ATMOSPHERIC HUMIDITY AND TEMPERATURE ON THE ENGINE POWER AND TAKE-OFF PERFORMANCE OF A HASTINGS I Published by Authority of the Secretary General INTERNATIONAL CIVIL AVIATION ORGANIZATION MONTREAL CANADA

This Publication is fssued fn Englfsh, French and Spanfsh Published fn Montreal, Canada, by the International Civil Avfation Oeaiaatfone Correspondence concerning publfcatfona should be addressed to the Secretary General of ICAB, International Aviation BuSadbg, 1080 Universfty Street, BfonrecaP, Canadae OPders for ICAO publfcations should be sen, on payments In Canadfa currency 1, to In SeapPfn or Irish currency s/d, to Secretary General, ICAO, His Majesyss Statfonery Office, International Aviation Buflding, PoOe BOX 569 1080 University Street, London, SeE, ls Montreal, Canada. EngSando Cable addreas ICBO MONTReBL Cable address r HEMSTONERY LONDON 9 In French currency fr,L to to ICAO Ibpresenatve, ICAO RepresenctSve, European African Office, Middle East Of'fiee, 60bis, avenue dtIb, Wadie Scaad Building Parfa I, France, Shasia Sal el Dine, Cable addressr ICAOREP PARIS Zatdek, Cairo, Ern, Gable addre sa ICAOREP CAIRO In Peruvian ewrency solesl, to In AuatrdAan currency a, to IW Representative, ICAO Representative, South Braerican Offce, Far East Paciffe Office, Apartado 680, 17 Robe Street, Lima, Peru. St. gfdsss Cable address8 ITCAOREP LIMA Melbme, ustralf a. Cable address s ICAOREP MEUXIURNE, Price t 15 cens Canadian mrency MontreaL

Foreword o..oaeoeoeooeeooooee..ooo..oo Sunamary e.0000..0.oe000..e....e.....o.. lo- Introduction eoO....eee..e..boo...m.o..e....... 28- Description of af.craft O......o.e..........e..e....O..Oe 30- Scope of tests ooO..OeO.oe........a.... .e..e.. 40- Method of analysis of results oeOooQO Oeo 6.- Discussion eo..eOOOO.o.a..OO.oO.........oe. Appendix Io- Variation of take-off distance with power and afr density o.QOa.OO.OOO.OO...e....ed....o..o. Appendix IIe- Calculation of component effects of Wdity on engine power OO,OOa....OO.OeO....O.o.... Appendh IIIo- Motes on the distribution and variation of atmospheric humidity eooOOOeeOOeeooeOeoe Tables of results o.o00e0.0...o0oeooQo.. Table lo- Take-off distance and power measured at take-off ..o Table 20- Bate of climb at l.40 mopehe AeS.3.m e......er.a.... Table 30- Power and fuel flow measured in level flight a ..OOO Table 4- Power and he1 flaw measured in level flight b 1 0.0. Table 50- Power and fuel flow masured in level flight c Table 6e- Variation of power with temperature and humidity 0.0

page 4 ICAO CirtiLm 15-AN112 Table of Contents contd. .am Table 70- Vmiatfon of fie1 consumption wfth temperature eoooeo. 45 Table 80- Calculated efficiency derivatives for Hastfigs propellers oe.Oo...oO.o.O.o.O..e...eobdeeOoe i6 Table 90- Brief descriptjions of mays used for measured take-offs e0e000006..0e0 .... O..Oe..OeOOOO..eOOe. i6

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