Publication Date:
2019-07-13
Description:
The paper presents a technique for evaluating the Jovian entry-probe heat-shield material with a gasdynamic laser. This entry probe of Project Galileo will incorporate a forebody heat shield of carbon phenolic ablative; at the expected peak radiant intensity of 42 kW/sq cm this material can be evaluated by a CO2 gasdynamic laser. The typically quasigaussian spatial distribution of the laser output beam is converted to a spatially uniform beam by a new optical integrator; the ablation results can be related to the imposed intensity and then to the flight situation with a uniform beam. The tests show that the carbon phenolic tends to spall under intense radiation, and this process is quantified by a particle capture technique.
Keywords:
GROUND SUPPORT SYSTEMS AND FACILITIES (SPACE)
Type:
ICIASF ''79; International Congress on Instrumentation in Aerospace Simulation Facilities; Sep 24, 1979 - Sep 26, 1979; Monterey, CA
Format:
text
