Skin Temperature and Cooling Analysis of the Combustion Chamber Wall and Nozzle of the Hermes B-Ⅰ Vehicle

摘要

The transient and equilibrium temperatures of the Hermes B-1combustion chamber and exhaust nozzle are calculated for design flight conditions. The resultant temperatures indicate that some means of nozzle cooling is required to prevent tailpipe burnout. Two means of nozzle cooling are investigated theoretically; namely, air cooling by annularly ducted ram air, and protection by means of fuel additives. It is found that the two methods in combination will prevent equilibrium temperatures from exceeding 1800℉.