Auxiliary Equipment

Abstract

A special machine tool had to be evolved by the David Brown Automobile Gear Division, Hudders‐field, in order to cut the elliptical gears, illustrated in FIG. 1, eight pairs of which are used in the flying control mechanism of each Bristol Britannia. Each gear is just under 2½ in. in diameter, with 71 teeth of 30 d.p. on each ½ in. outer face. There is a difference of 0·14 in. between the major and minor axes. The inner serrations serve to match the centres which are themselves eccentric in that they are bored ½ in. off centre.

Citation

(1958), "Auxiliary Equipment", Aircraft Engineering and Aerospace Technology, Vol. 30 No. 6, pp. 185-185. https://doi.org/10.1108/eb032983