Calorimeters: Heat Rate Sensors for Space Vehicle Boosters 630368
Methods of measuring radiation and convective heating on airborne vehicles are discussed. Different modes of heat transfer require special gages for determining transient and steady state heating rates. The slug or slope type calorimeter is used to measure both total and radiant heating.
A unique conical purge method is used to insure filter cleanliness during flight duration and measuring period. Various types of heating rate gages are discussed outlining the capabilities of each and the factors influencing their accuracy.
Experimental data indicates that convective and conductive heat losses from the sensors can be decreased significantly by incorporating special design features. Black body characteristics of the sensors are discussed in relation to the wave length and temperature of the emitting infrared source. Preflight and postflight calibration techniques are used to eliminate uncertainties.