Intelsat III F-8 - Misplaced Pages

Failed communications satellite

Intelsat III F-8
Spacecraft properties

Mission type	Communications
Operator	Intelsat
COSPAR ID	1970-055A
SATCAT no.	04478
Mission duration	5 years (planned) Launch failure


Manufacturer	TRW
Launch mass	293 kilograms (646 lb)
BOL mass	151 kilograms (333 lb)
Power	183 W


Start of mission
Launch date	July 23, 1970, 00:16:03 (1970-07-23UTC00:16:03Z) UTC
Rocket	Delta M
Launch site	Cape Canaveral LC-17A


Orbital parameters
Reference system	Geocentric
Regime	Geostationary
Eccentricity	0.24386
Perigee altitude	19,400 kilometers (12,100 mi)
Apogee altitude	36,030 kilometers (22,390 mi)
Inclination	13.3°
Period	1,043.0 minutes
Epoch	July 23, 1970

Intelsat III← Intelsat III F-7 Intelsat IV F-1 (Intelsat IV) →

Intelsat III F-8 was a communications satellite owned by Intelsat. The satellite had an estimated useful life of 5 years.

Design

The last of eight Intelsat III satellites to be launched, Intelsat III F-8 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. It had a design life of five years and carried an SVM-2 apogee motor for propulsion.

Launch

Intelsat III F-8 was launched on a Delta M rocket, flying from Launch Complex 17A at the Cape Canaveral Air Force Station. The launch took place on July 23, 1970, with the spacecraft bound for a geosynchronous transfer orbit.

The Intelsat III F-8 was lost due to a malfunction during the apogee motor firing. Communications stopped 14.5 seconds into the planned 27 second apogee motor burn.

References

^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved April 21, 2017.
^ NASA, Goddard Space Flight Center. "INTELSAT 3 F-8". NSSDC Master Catalog. Retrieved April 21, 2017.
Wade, Mark. "Intelsat 3". Encyclopedia Astronautica. Archived from the original on February 23, 2002. Retrieved April 21, 2017.
Krebs, Gunter. "Intelsat-3". Gunter's Space Page. Retrieved April 21, 2017.

v t e Intelsat Corporation
COMSAT Intelsat Americas PanAmSat ITSO STS-49 List of Intelsat satellites
Intelsat I, II, III	Intelsat I Intelsat II F-1 II F-2 II F-3 II F-4 Intelsat III F-1 III F-2 III F-3 III F-4 III F-5 III F-6 III F-7 III F-8
Intelsat IV	Intelsat IV F-1 IV F-2 IV F-3 IV F-4 IV F-5 IV F-6 IV F-7 IV F-8 IVA F-1 IVA F-2 IVA F-3 IVA F-4 IVA F-5 IVA F-6
Intelsat V	Intelsat V F-1 V F-2 V F-3 V F-4 V F-5 V F-6 V F-7 V F-8 V F-9† VA F-10 VA F-11 VA F-12 VA F-13 VA F-14 VA F-15
Intelsat VI	Intelsat 601 602 603 604 605
Intelsat 7-10	Intelsat 701 702 703 704 705 706 707 708 709 801 802 803 804 805 806 901 902 903 904 905 906 907 10-02
ex-PanAmSat	Intelsat 1R 2 3R 4 5 6B 7 8 9 10 11 12
Recent Intelsat	Intelsat 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 (New Dawn) 29e 30 31 32e 33e 34 35e 36 37e 38 39 40e
Galaxy (Intelsat Americas)	Galaxy 3C 4R 5 9 10R 11 12 13 14 15 16 17 18 19 23 25 26 27 28 30 31 32 33 34 35 36 37
Other	APR-1 APR-2 Horizons-1 Horizons-2 Horizons-3e Intelsat K Marisat-F2 SBS 6

v t e ← 1969 Orbital launches in 1970 1971 →
Kosmos 318 OPS 6531 Intelsat III F-6 Kosmos 319 Kosmos 320 Kosmos 321 Kosmos 322 ITOS-1 Australis-OSCAR 5 DS-P1-I No.6 SERT-2 E-8-5 No.405 Kosmos 323 Ohsumi OPS 0054 Molniya-1 No.17 Kosmos 324 Kosmos 325 OPS 0440 OPS 3402 Wika Mika Kosmos 326 Meteor No.14 Kosmos 327 NATO 2A Kosmos 328 Kosmos 329 Kosmos 330 Nimbus 4 Topo-1 Kosmos 331 OPS 7033 OPS 7044 Kosmos 332 Apollo 13 Kosmos 333 OPS 2863 Intelsat III F-7 Kosmos 334 Dong Fang Hong 1 Kosmos 335 Kosmos 336 Kosmos 337 Kosmos 338 Kosmos 339 Kosmos 340 Kosmos 341 Kosmos 342 Kosmos 343 Meteor No.13 Kosmos 344 Kosmos 345 OPS 4720 OPS 8520 DS-P1-Yu No.36 Soyuz 9 Kosmos 346 STV-3 Kosmos 347 Kosmos 348 Kosmos 349 OPS 5346 Meteor-M No.17 OPS 6820 Molniya-1 No.21 Kosmos 350 Kosmos 351 Unnamed Kosmos 352 Kosmos 353 Zenit-4 No.75 OPS 4324 Intelsat III F-8 Kosmos 354 Interkosmos 3 Kosmos 355 Kosmos 356 Venera 7 OPS 7874 Skynet 1B Kosmos 357 Kosmos 358 Kosmos 359 Kosmos 359 OPS 8329 Transit O-19 Kosmos 360 OPS 7329 Orba X-2 OPS 0203 Kosmos 361 Luna 16 Kosmos 362 Kosmos 363 Kosmos 364 MS-F1 Kosmos 365 Molniya-1 No.19 Kosmos 366 Kosmos 367 Kosmos 368 Nauka No.3 Kosmos 369 Kosmos 370 Kosmos 371 Interkosmos 4 Meteor-M No.16 Kosmos 372 Kosmos 373 Zond 8 Kosmos 374 OPS 7568 Kosmos 375 Kosmos 376 OPS 5960 OFO RM-1 Luna 17 (Lunokhod 1) Kosmos 377 Kosmos 378 OPS 4992 OPS 6829 Kosmos 379 Kosmos 380 Molniya-1 No.23 OAO-B Kosmos 381 Kosmos 382 Kosmos 383 Kosmos 384 Nauka No.2 NOAA-1 CEPI Uhuru Kosmos 385 Peole Kosmos 386 Kosmos 387 Kosmos 388 Kosmos 389 DS-P1-M No.1 Molniya-1 No.22
Payloads are separated by bullets ( · ), launches by pipes ( \| ). Crewed flights are indicated in underline. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in (brackets).

← 1969 Orbital launches in 1970 1971 →

Payloads are separated by bullets ( · ), launches by pipes ( | ). Crewed flights are indicated in underline. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in (brackets).

Categories:

Design

Launch

See also

References