Intelsat III F-5

Intelsat III F-5

Mission type	Communications
Operator	Intelsat
COSPAR ID	1969-064A
SATCAT no.	04051
Mission duration	5 years planned Failed to orbit
Spacecraft properties
Manufacturer	TRW
Launch mass	293 kilograms (646 lb)
BOL mass	151 kilograms (333 lb)
Power	183 W
Start of mission
Launch date	July 26, 1969, 02:06 (1969-07-26UTC02:06Z) UTC[1]
Rocket	Delta M
Launch site	Cape Canaveral LC-17A
End of mission
Deactivated	October 14, 1988 (1988-10-15)
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Eccentricity	0.07326
Perigee altitude	252 kilometers (157 mi)
Apogee altitude	1,301 kilometers (808 mi)
Inclination	30.3°
Period	115.3 minutes
Epoch	July 26, 1969
Intelsat III

Intelsat III F-5 was a communications satellite intended to be operated by Intelsat. Launched towards geostationary orbit in 1969 it failed to achieve orbit.

Design

The fifth of eight Intelsat III satellites to be launched, Intelsat III F-5 was built by TRW. It was a 293-kilogram (646 lb) spacecraft equipped with two transponders to be powered by body-mounted solar cells generating 183 watts of power.^[2] It had a design life of five years and carried an SVM-2 apogee motor for propulsion.^[3]

Launch

Intelsat III F-5 was launched by a Delta M rocket, flying from Launch Complex 17A at the Cape Canaveral Air Force Station. The launch took place on July 26, 1969, with the spacecraft bound for a geosynchronous transfer orbit.^[1]

Due to a failure in the third phase of the launch process, the satellite did not reach the desired orbit.

See also

• 1969 in spaceflight

References

1. McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved April 21, 2017.
2. Wade, Mark. "Intelsat 3". Encyclopedia Astronautica. Archived from the original on February 23, 2002. Retrieved April 21, 2017.
3. Krebs, Gunter. "Intelsat-3". Gunter's Space Page. Retrieved April 21, 2017.