SST Technology Follow on Program-Phase 1. Development and Evaluation of Fuel Tank Sealants
Final rept. on Task 2-B
BOEING COMMERCIAL AIRPLANE CO SEATTLE WA
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Since 1961 Boeing has conducted a continuous search for a fuel tank sealant for the U.S.A. supersonic transport. Testing began in 1965 and from that time to the present 16 sealant systems were screened. Only one, a fluorosilicone, was found worthy of extensive testing. A program was instituted which involved measuring important physical properties before and after exposure to expected environments. The program included functional testing of sealed tanks. Results are reported for exposure for more than 20,000 hours at 426-441 F in fuel vapor in an accelerated cycle, more than 2000 of such hours in a flight cycle, and more than 1500 of such hours in a sealed tank. As deficiencies were recognized, the sealant supplier was notified and steps were taken to eliminate the problem. Preliminary specifications for procurement and process controls have been prepared.
- Civilian Aircraft
- Adhesives, Seals and Binders