Testing Overview and Proof- Test of NASA’s X-34 Dr. Larry Peel Texas A & M - Kingsville MEEN 4363/4 special thanks to Gary Harris of Orbital Science Corp.

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Presentation transcript:

Testing Overview and Proof- Test of NASA’s X-34 Dr. Larry Peel Texas A & M - Kingsville MEEN 4363/4 special thanks to Gary Harris of Orbital Science Corp.

Presentation Outline u When is testing Needed? u Materials Testing u Component Testing u Proof Testing u In-service Testing

What is Needed for Testing? u Completed Components u A verified TEST PLAN u A notebook to TAKE NOTES. Record everything. u Test equipment, training, jigs & fixtures u Rough calculations to predict response of system. u Time… do a test, correlate the data, then take more tests…. Can’t rush testing. u Allow for failure of specimens.

Testing Standards - ASTM n Rebar - ASTM A615 and ASTM A996 standards ASTM D 6415 test fixture and test specimen. Source: Dr. Don Adams

Testing in our lab Simple weld / tensile tests up to 17,000 lbs were performed in our lab today. Notice chips out of fixture.

Materials Testing  Elastomers 5 silicone 5 urethane u Fibers Dry cotton Rubber-impregnated cotton Fiberglass not tested u Fiber-Reinforced Elastomer Coupons 4 specimens each at 0, 15, 30, 45, 60, 75, 90° Silicone/cotton, Silicone/fiberglass, Urethane/cotton, Urethane/fiberglass.

Component Testing & In Service X-34 pictures can be found at

Rocket Propellant Tank Design RP tank is in front, has 2 internal domes to create 3 compartments, made totally from graphite/epoxy using lower-cost fabrication methods

RP Tank Testing Proof pressure test to 125 psi, Cycle 400 times at 100 psi …pinhole leaks, end deflection, action of internal domes

Control Surface - Aileron

Control Surfaces - Speed Brake All foam core, no internal structure

Beyond Fabrication….. Assembly, testing and first captive flight

Questions & Acknowledgements u X-34 Sponsored by NASA, Thanks to Orbital Science and R-Cubed Composites.