Studies Relating to Temperature Control of a Large Space TelescopeNational Aeronautics and Space Administration, 1973 - Orbiting astronomical observatories - 59 pages |
Contents
SUMMARY | 1 |
The effect of a gray internal surface | 9 |
Calculated Results | 17 |
2 other sections not shown
Common terms and phrases
100-layer blanket active optics adjacent heat pipes analysis antisolar point assumed axis normal balloon circumferential heat pipes circumferential temperature variation constant cosh curves Distance from mirror emissivity finite-length cylinder finite-length tube Fourier coefficients Fourier series geosynchronous orbit heat conduction heat flow heat input heat radiated heat transfer heat-pipe heated collar heated isothermal collar infinite cylinder inside integral equation internal radiation internal surface k(Zo Langley Research Center large space telescope layers longitudinal location low orbit midway between adjacent multilayer insulation NASA normal to solar open end radiation conductance radiation received radii rate of heat shadow phase simultaneous equations sketch solar rays Stefan-Boltzmann constant subsolar area subsolar point Synchronous Orbit telescope tube temperature distributions temperature uniformity term thermal Tmax Tmin tube axis tube wall ture uniform temperature unit area vapor chamber view factor α ε ΠΕ Ст მე