Sputnik 4

From Wikipedia, the free encyclopedia

**Sputnik 4**
Mission Statistics
Mission Name:	Sputnik 4
Call Sign:	Korabl Sputnik 1
Number of Crew Members:	0
Launch:	May 15, 1960 00:00 UTC Baikonur LC1 45°55′00″N, 63°20′00″E
Reentered:	September 5, 1962 Manitowoc, Wisconsin
Duration:	2 years 113 days
Number of Orbits:	~13,000
Korabl Sputnik 1

Sputnik 4 was a USSR satellite, part of the Sputnik program and a test-flight of the Vostok spacecraft that would be used for the first human spaceflight. It was launched on May 15, 1960. A bug in the guidance system had pointed the capsule in the wrong direction, so instead of dropping into the atmosphere the satellite moved into a higher orbit. It re-entered the atmosphere on or about September 5, 1962. A piece was found in the middle of North 8th Street in Manitowoc, Wisconsin^{[citation needed]}.

This spacecraft, the first of a series of spacecraft used to investigate the means for manned space flight, contained scientific instruments, a television system, and a self-sustaining biological cabin with a dummy of a man. The spacecraft was designed to study the operation of the life support system and the stresses of flight. The spacecraft radioed both extensive telemetry and prerecorded voice communications. After four days of flight, the reentry cabin was separated from its service module and retrorockets were fired, but because of an incorrect attitude the spacecraft did not reenter the atmosphere as planned.

Giovanni Battista Judica Cordiglia, who staffed a listening station at Torre Bert near Turin, is reported to claim that radio signals were received on November 28, 1960 which could have originated from this spacecraft. They appeared to be a distress message, coinciding with the failure of the spacecraft on reentry. It has led some to suggest that the spacecraft may have been manned. ^[1]

[edit] Mission parameters

Mass: 1,477 kg
Perigee: 280 km
Apogee: 675 km
Inclination: 65.02°
Period: 94.25 minutes
NSSDC ID: 1960-005A

[edit] Notes

^ Interview with Gian Cordiglia

v • d • e Sputnik program

Sputnik 1 · Sputnik 2 · Sputnik 3 · Sputnik 4 · Sputnik 5 · Sputnik 6 · Sputnik 7 · Sputnik 8 · Sputnik 9 · Sputnik 10

v • d • e Vostok programme

Unmanned:	Sputnik 4, Sputnik 5, Sputnik 6, Sputnik 9, Sputnik 10

Manned:	Vostok 1, Vostok 2, Vostok 3, Vostok 4, Vostok 5, Vostok 6

Planned:	Vostok 7 to 13, incorporated into Voskhod programme