RESPONSE OF LARGE MEMBRANE OPTICAL SURFACESTO ACOUSTIC ENVIRONMENT

摘要

Acoustic launch vibration is often the critical source of vibration for space telescopes. In particular, the large surfaces ofrnmembrane optics act as receivers of acoustic energy and can experience significant stresses on launch and significantrndisplacements during laboratory testing. Using NASTRAN, several membrane reflector geometries were analyzed underrnapplied axial tension to the membrane surfaces. The pressure field was applied with a sin(kx)/(kx) spatial correlation, andrnstress and displacements were found at selected points on the membrane surface. Recommendations regarding membranernlaunch and laboratory testing states are presented.