STUDY OF FORCES ON PROPELLANTS DUE TO HEAT TRANSFER INFLUENCING PROPELLANT TEMPERATURE IN A RECOVERY TYPE VEHICLE.
Abstract
The purpose of the study was to indicate the effects on the liquid orientation and the temperature field due to the differential surface tension force acting along the liquidvapor interface. The mathematical model described in this work yields a system of differential equations which is so complex that a proof for existance is beyond reach for the moment. However, from this system of equations, some methods can be found to estimate the differential surface tension effects in real tanks. It is shown that the differential surface tension force affects the heat transfer mechanism even though it does not affect the liquid orientation. The analysis applies only for liquid layer with thickness much less than the shorter length of the liquid surface. Hence, the liquid layer in the fuel tank of an Agena vehicle satisfies this restriction. The apparatus has been assembled for measurement of the thermal conductivity of the propellant-helium vapor mixtures. Calibration with standard gases has shown that the equipment will be satisfactory for the measurements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1962
- Accession Number
- AD0615617