Roll drum sensor housing having sliding window

Details Roll drum sensor housing having sliding window Roll drum sensor housing having sliding window

1987-12-01

1989-12-19

Basinger, Sherman D.

Aeronautics and astronautics

Miscellaneous

2441293, 244207, 350584, B64D 4700

Patent

active

048877794

ABSTRACT:
A cylindrical roll drum housing (12) is mounted to the roof (18) of an aircraft fuselage. Enclosed in the housing (12) is a sensor (22) that pivots about an azimuthal axis (82). The sensor (22) normally looks outwardly through sliding window (20) that moves back and forth in correspondence with sensor pivoting. Pressurized air is blown directly across the window's opening (40), and is also blown directly into the housing (12). The window (20) has an inwardly directed airflow-deflecting edge which, in combination with the air blowing, is used to control boundary layer vortices across the window's opening so that they do not interfere with sensor properties.

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