Development of a rocket payload with wire sensor for the measurement of upper air temperature

Abstract

A rocket-borne instrument which can measure upper air temperature in the altitude range 70 to 20 km has been designed. The instrument essentially consists of a bridge amplifier in conjunction with a voltage-controlled oscHiator and a pulse amplitude type telemetry system. The temperature sensor is made from nickel iron alloy wire. Platinum resistance thermometry is employed in determining, the temperature surrounding the sensor. The information regarding temperature is transmitted on a carrier link of 1680 MHz from the dipole antenna of a cavity type  transmitter tube (R.C.A. 6562). The instrument has been tested in the laboratory and calibration with the copper constant an thermo couple shows high accuracy in the temperature measurement.