Precision fin indexing device for wind tunnel models

Details Precision fin indexing device for wind tunnel models Precision fin indexing device for wind tunnel models

1979-03-05

1980-06-17

Swisher, S. Clement

Measuring and testing

Wind tunnel: aerodynamic wing and propeller study

G01M 900

Patent

active

042077648

ABSTRACT:
An indexing device includes an adapter conforming to the contours of the test model body with a cavity for housing a ring gear which has internal teeth segments in two diametrically opposed quadrants and is rigidly attached to the adapter. A movable fin with an aerodynamic surface includes a cylindrical hub welded to the base portion thereof. The hub is provided with a central shaft extension which engages a close fitting opening in the adapter and with two curved slots to accept clamping fasteners that thread into tapped holes in the adapter. A spur gear, modified to mesh with the modified ring gear on the adapter, is bolted on the under surface of the hub concentric with the shaft extension.

REFERENCES:
patent: 2711648 (1955-06-01), Carlstrand
patent: 3453878 (1969-07-01), Wilson
patent: 3460383 (1969-08-01), Padera

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