Wind tunnel model for simulating an infinite swept wing

摘要

A model swept wing consists of an upstream end section 1, a constant chord, constant section central section 2 and a downstream end section 3, in which the central section represents the infinite swept wing on which aerodynamic data is desired and in which the end sections 1, 3 include means (eg. varying chord and/or suction slots 4, 5) for compensating for the variation in lift which would occur across a constant chord wing when placed between the walls of a wind tunnel within a steady airflow. Alternatively, or in addition, the said upstream and downstream end sections may comprise one or more trailing-edge flaps 11, 12, 13, 14, 15, 16, (Figure 4) means for measuring the pressure on the upper and lower surfaces of the wing, and means, governed by variations in the pressure distribution across the span, for controlling the angles of the flaps so as to produce a substantially uniform lift across the span of the complete wing. IMAGE