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HELICE PAS UNIFORME [1 record]
Record 1 - internal organization data 1985-07-24
Record 1, English
Record 1, Subject field(s)
- Aircraft Propulsion Systems
Record 1, Main entry term, English
- true pitch propeller 1, record 1, English, true%20pitch%20propeller
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
A true pitch propeller is one that makes use of the blade-element theory. Each element (section) of the blade travels at a different rate of speed, that is, the tip sections travel faster than the sections close to the hub. When the elements (sections) are arranged so that each is set at the proper angle to the relative airstream, they all advance the same distance during any single revolution of the propeller. 1, record 1, English, - true%20pitch%20propeller
Record 1, French
Record 1, Domaine(s)
- Propulsion des aéronefs
Record 1, Main entry term, French
- hélice à pas constant
1, record 1, French, h%C3%A9lice%20%C3%A0%20pas%20constant
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- hélice à pas uniforme 2, record 1, French, h%C3%A9lice%20%C3%A0%20pas%20uniforme
feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Si l'on veut avoir une hélice dont toutes les sections possèdent le même pas H, il suffit de réaliser la condition r tg[alpha]=constante=k (où alpha correspond à l'angle de calage] (...) L'hélice à pas constant ainsi définie n'est plus utilisée à l'heure actuelle; en effet, la présence du fuseau moteur réduit la vitesse de l'air au voisinage du moyeu, ce qui se traduit par la nécessité de réduire le pas dans cette région afin d'obtenir un rendement meilleur. Dès lors, il est nécessaire de définir un "profil de référence" afin de caractériser une telle hélice. 3, record 1, French, - h%C3%A9lice%20%C3%A0%20pas%20constant
Record 1, Key term(s)
- hélice à pas géométrique constant
Record 1, Spanish
Record 1, Textual support, Spanish
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