Engineering topics

Wolff, C. M.

Publications and source records attributed to Wolff, C. M..

4 records

NASA NTRS1978

Development of multipurpose radiometer

A radiometer has been developed for thermal vacuum testing at the Johnson Space Center. The radiometer: (1) measures incident or absorbed irradiance in the solar and/or infrared spectral regions, (2) measures emittance and absorptance, (3) has improved sensitivity, (4) is light in weight, (5) is rugged and very reliable, (6) is temperature-compensated, (7) requires no external control, circuitry or in situ calibration, and (8) has reduced operating costs.

Redman, R. S.↗

NASA NTRS1973

A versatile instrument for thermal radiation measurement

A radiometer has been designed, fabricated, and tested which is rugged, versatile, and highly reliable for measurement of real or simulated solar radiation in an ambient or vacuum environment, and for measurement of total hemispherical infrared radiation in a vacuum. This radiometer may be considered as an all purpose radiometer for space environment simulation and testing.

Wolff, C. M.↗

NASA NTRS1972

some new techniques in passive contaminant analysis of space environment simulation chambers

A passive contamination analysis technique in surface sampling for space simulation was developed and evaluated. The KBr pelletizing technique was extended to include heavy oils for infrared analysis. Transmittance and specular reflectance measurements at 2000 A wavelength were found very sensitive to contamination.

Wolff, C. M.↗

NASA NTRS1972

The design and application of an infrared simulator for thermal vacuum testing

An infrared simulator was developed and installed in SIM Chamber A in support of the Apollo lunar-exploration mission thermal vacuum testing. The simulator was designed to provide thermal simulation of the radiation emitted and reflected by the lunar surface incident on the Apollo service module in a 60-mile-altitude lunar orbit. The infrared simulator comprises 18 individually controlled zones that provide the irradiance profiles over a 180 deg arc around the spacecraft, simulating the flux levels of equatorial, polar, and 45 deg lunar orbits.

Skinner, D. J.↗