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Sputnik 1
Sputnik 1
Sputnik 1
Credit: © Mark Wade
Russian technology satellite. Tikhonravov's 1.4 metric ton ISZ satellite was to have been launched by the new R-7 ICBM as the Soviet Union's first satellite, during the International Geophysical Year.

AKA: PS;PS-1. Status: Operational 1957. First Launch: 1957-10-04. Last Launch: 1957-10-04. Number: 1 . Gross mass: 84 kg (185 lb).

But it was not ready in time, so Korolev hurriedly developed Sputnik 1 as a replacement. It became the first artificial satellite of the earth. Sputnik 1 had 1 watt of power, producing an 0.4 second duration signal on the 7 and 15 m bands. Four antennae were deployed at 35 degree angles. Power was provided by three silver-zinc batteries. Thermo-regulation was by a ventilator. The 580 mm sphere had a mass of 83 kg and was made of highly polished Aluminum AMG6T alloy 2 mm thick. It was built without drawings due to the quick time schedule. Korolev was everywhere, supervising all aspects of its construction. It functioned for 21 days.



Subtopics

Sputnik 1 (PS-1 #1) Technology satellite, Russia. Launched 1957.

Family: Technology, Technology satellite. Country: Russia. Launch Vehicles: R-7, Sputnik 8K71PS. Launch Sites: Baikonur, Baikonur LC1. Agency: Korolev bureau. Bibliography: 177, 2, 4087, 445, 474, 6, 85, 6932.
Photo Gallery

Sputnik 1Sputnik 1
Credit: Manufacturer Image



1957 February 15 - . Launch Vehicle: R-7.
  • Decision to build Sputnik 1 due to delays in Sputnik 3 design. - . Nation: Russia. Spacecraft: Sputnik 1. Council of Soviet Ministers (SM) Decree 171-83ss 'On Measures to Carry Out During the International Geophysical Year.--Launch of simple satellites in mid-1957' was issued..

1957 October 4 - . 19:28 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Sputnik 8K71PS.
  • Sputnik 1 - . Payload: PS. Mass: 84 kg (185 lb). Nation: Russia. Agency: MVS. Class: Technology. Type: Navigation technology satellite. Spacecraft: Sputnik 1. Decay Date: 1958-01-03 . USAF Sat Cat: 2 . COSPAR: 1957-Alpha-2. Apogee: 945 km (587 mi). Perigee: 227 km (141 mi). Inclination: 65.0000 deg. Period: 96.10 min.

    First artificial satellite; transmitted signals for 21 days. Launching of first ever artificial satellite of the Earth; physical study of the atmosphere; remained in orbit until January 4, 1958. This event began the space race by galvanizing interest and action on the part of the American public to support an active role in space research, technology, and exploration.



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