Transient calorimeter calibration system
Abstract
Null point calorimeters are used to measure heat flux levels in excess of 15.0 kW/per sq cm in arc heated re-entry wind tunnels. To augment these measurements at the Air Force Flight Dynamics Laboratory a calibration system and a transfer standard was developed. The system generates heat flux densities up to 10 kW/per sq cm within a 0.25 in. square target zone using a xenon arc radiation source. The absorptivity of calorimeter surfaces to this radiant source is measured with an accessory apparatus to yield a calibration accuracy of 5%.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- March 1975
- Bibcode:
- 1975STIN...7615446S
- Keywords:
-
- Calibrating;
- Calorimeters;
- Hypersonic Wind Tunnels;
- Atmospheric Entry;
- Heat Flux;
- Heat Measurement;
- Xenon Lamps;
- Instrumentation and Photography