DATA CORRELATION AND ANALYSIS OF ARC TUNNEL AND WIND TUNNEL TESTS OREM FINAL REPORT VOLUME 2：DATA EFFECT, PART 1, FINAL REPORT, 20 MAY 1974-19 MAY 1975

摘要

The reusable surface insulation (RSI) thermal protection unsteady (TPS) for Space Shuttle requires gaps at RSI joints to accomodate structural deflection resulting from loads and thermal expansion. In addition, allowance oust be made for manufacturing and assembly tolerances. Cap widths under current consideration will nominally be 0.254 cm (0.10").nThe successful application of RSI material for Shuttle thermal protection i* significantly affected by entry heating within the RSI gaps. Cap width, depth, resection geometry, gap orientation, boundary layer state and surface mismatch are all known to affect convective heating within the gap and heat leakage to the protected substructure. For instance, present study results indicate a flush transverse butt gap 0.254 cm wide with an edge radius of 0.152 cm, increases TPS thickness requirements by approximately 1/3 above the thickness required for a continuous loyal of RSI.