Soft landing of Venera 7 on the Venus surface and preliminary results of investigations of the Venus atmosphere

Abstract

The temperature of the Venus atmosphered was measured during the descent and at the surface after landing. The variation of temperature and pressure with altitude on Venus was determined down to surface by combining the temperature measurements with descent velocity derived from the Doppler shift data during the descent, and by considering the data collected previously during the flights of Veneras 4,5 and 6.