U.S. Patent Specifications

Abstract

A cowl for an air‐cooled aircraft engine comprising a series of rearwardly‐extending plate‐like flaps entirely separate from the cowl, a pair of rearwardly‐extending arms associated with each flap one at each margin thereof, a pair of longitudinal flanges on the side of each arm adjacent the flap so as to form a groove between them of which grooves at least one is of greater width than the thickness of the margin of the flap which can thus slide in at least one of said grooves, said margins being supported within said grooves, the circumferential distance between the flanges on one arm and the flanges on the other arm being substantially less than the corresponding dimension of the flap at all operating positions of the arms and the circumferential distance between the base of the groove on one arm and the base of the groove on the other arm being greater than the corresponding dimension of the flap, whereby the flap is supported solely by the arms at all operating positions thereof despite its being entirely separate from the cowl, a pivot for each arm lying along an axis at right‐angles to a fore‐and‐aft central plane, and driving mechanism carried by a fixed part of the cowl and operatively connected to each said arm to rotate it about said pivotal axis.

Citation

(1938), "U.S. Patent Specifications", Aircraft Engineering and Aerospace Technology, Vol. 10 No. 2, pp. 58-58. https://doi.org/10.1108/eb030278