MODERN turbojet engines have a shaft speed range of approximately 2 to 1 (from ground idle to take‐off) and it is necessary, therefore, to have some form of infinitely‐variable‐ratio gearbox to obtain a constant speed for accessories such as a.c. generators. Various means of doing this are available; for example, these could be mechanical, electrical, hydraulic or pneumatic, or a combination of these. The purpose of this paper is to discuss the major types of constant speed drive (C.S.D.) that have been evolved, mentioning the design problems associated with each.
Mooney, J. (1962), "Constant Speed Drives: Design and Operational Problems Associated with the Major Types of C.S.D. for Aircraft Accessories", Aircraft Engineering and Aerospace Technology, Vol. 34 No. 10, pp. 284-286. https://doi.org/10.1108/eb033619Download as .RIS
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