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reverse pitch
Definição1
Special ground-only setting available on some propellers and ducted propulsors, including several variable-pitch turbofans, in which blades accelerate air forwards, creating retrothrust proportional to engine power without change in direction of rotation.
Fonte1
GUNSTON, Bill. The Cambridge aerospace dictionary. Cambridge: Cambridge University, 2004. vii, 740 p. (Cambridge aerospace series.)
Fonte2
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 15971-4: aeronáutica – vocabulário – parte 4: propulsão aeronáutica. Rio de Janeiro, 2011. 44 p.
Fonte3
INTERNATIONAL CIVIL AVIATION ORGANIZATION. Annex 6 to the Convention on International Civil Aviation: operation of aircraft. Part I: international commercial air transport: aeroplanes. 9th ed. Montreal, 2010.
Contexto
Reverse pitch or reverse thrust are not used when establishing the landing distance using this method and field length factor. Ground fine pitch is used if the effective drag/weight ratio in the airborne part of the landing distance is not less satisfactory than that of conventional piston-engined aeroplane. Note: This does not mean that reverse pitch or reverse thrust, or use of ground fine pitch, are to be discouraged.
Subárea1
Aircraft
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