Title :
ATS-6 Quartz-Crystal Microbalance
Author_Institution :
NASA Goddard Space Flight Center, Greenbelt, Md. 20771
Abstract :
The Quartz-Crystal Microbalance Experiment provided data on the possible return of contaminants to the exterior surfaces of the spacecraft. The experiment measures the change in resonant frequency of the crystal due to deposition of material on the surface. There has been no mass accretion corresponding to the firing of hydrazine thrusters to unload the spacecraft momentum wheels. There have been accretions corresponding to the firing of the cesium ion engines.
Keywords :
Aircraft manufacture; Crystalline materials; Engines; Firing; Frequency measurement; Pollution measurement; Propellants; Resonant frequency; Surface contamination; Wheels;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.1975.308173
