Engineering topics
Publications and source records attributed to Hardgrove, W. F..
Some of the applications of cryogenics for simulating space environmental conditions are reviewed, and typical existing space simulation facilities are described. The techniques of adapting cryogenics to environmental simulation are discussed. Special attention is given to cryosorption pumps designed to accelerate cryogenic cooling of the adsorbent material.
One-watt refrigerator used for attaining clean room conditions in vacuum system of space simulator
Space simulation using contamination-free test facilities combining several cryogenic techniques to produce all cryogenic system
Cryogenic and cryosorption pumping of residual gases for clean test volume
Omnidirectional anisotropic molecular trap, used with vacuum pump to simulate space environments for testing spacecraft components
Simulated space vacuum environment by cryosorption pumping system
Cryosorption chamber for cryogenic testing of spacecraft in simulated space vacuums
Ultrahigh space vacuum simulation utilizing cryopumping and cryosorption techniques
A test device, which consists of six pyramidal reflectors joined together, acts as a baffle to impede the free path of the molecule to the test item by interposing a slanted surface which imparts an angular vector to the molecule and bounces it back to the chamber wall.
Simulated space vacuum environment by cryosorption pumping system