INFLATABLE STRUCTURE TEST PROGRAM
AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OH
Pagination or Media Count:
Small specimen tests elevated temperature with internal pressure were performed to predict the ability of a CS-105 silicone elastomer coated AIRMAT model to withstand the environment of a hypersonic wind tunnel 900- 1500F. The specimens all leaked badly in the expected wind tunnel temperature range. This indicated the probability of subsequent model failure. The wind tunnel model tests were successful however. Influence coefficient and vibration tests, both at room and elevated temperatures, were performed on AIRMAT models in support of flutter research. As before, the models could not withstand elevated temperature 800F or above. The laboratory model inflation pressure was 10 psi compared with the wind tunnel model inflation pressure of about 2 psi. Time at temperature andor an oxidizing atmosphere could be failure factors. Further testing of CS-105 coated AIRMAT structures is needed to evaluate the influence of load, pressure, temperature, and environment on coating characteristics and wire strength.
- Structural Engineering and Building Technology
- Test Facilities, Equipment and Methods