| Autor: |
Cain, Russell Paul, Lesho, Jeffery C., Manuel Uy, O., Oliver, John P., Simon, C.G., McKisson, J.E. |
| Zdroj: |
Acta Astronautica; January 1995, Vol. 35 Issue: 1, Number 1 Supplement 1 p145-154, 10p |
| Abstrakt: |
The Universal Particle Detector Experiment (UPDE), which consists of two parallel planes of diode laser beams of different wavelengths and a large surface MOS impact detector, will be used to test a novel technology for real-time monitoring of particles impacting a spacecraft surface with high resolution of time, position, direction, and velocity. The particle database will in turn be used to validate contamination and orbital debris models to predict optimal configurations of future space sensors and other sensitive surfaces. Besides measuring particles fluxes, the UPDE will also be capable of determining the velocity and size distributions of the ambient and self-induced particles around the spacecraft. With two different color diode lasers, particulate composition will also be determined based on laboratory calibration with different materials. Secondary particles dislodged from the top aluminum surface of the MOS detector will also be measured to determine the kinetic energy losses during energetic orbital debris impacts. The velocity range of this instrument is 0.1 m/sec to 14 km/sec, while its size sensitivity is from 0.2 μm to millimeter-sized particles. The in-space particulate measurements in space of the kind proposed here will be the first simultaneous multipurpose particulate experiment to include velocities from very slow to hypervelocities, sizes from submicron to pellet-sized diameters, chemical analysis of the particulate composition, and the kinetic energy loss after energetic impact of space debris. |
| Databáze: |
Supplemental Index |
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