One of MERC’s recent Mechanical Design Projects was a proof test for the F-15 Speed Brake. Existing non-destructive inspection depended on ultrasonic methods for identification of voids or disbonds in the composite part.
For this project, the government desired a load-based test to prove speed brake performance.
MERC calculated the maximum in-flight load for the speed brake and translated it into a test load.
A test fixture was designed to apply this load to the speed brake through use of hydraulic cylinders. The design was used to generate component drawings prior to fabricating the fixture in MERC’s prototype shop.
The system features fully integrated controls for automated testing of the speed brakes. The system is currently in use by the Air Force for screening F-15 speed brakes.
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