Cutaway view of N-4 spacecraft. This heavy high-energy physics station was launched on the first four test launches of the Proton launch vehicle.
Credit: Chelomei School, Leninsk
Russian cosmic ray astronomy satellite. One launch, 1968.11.16, Proton 4. Cosmic ray measurements. Study of the nature of high and ultra-high energy cosmic rays and their interaction with atomic nuclei. Mass announced at time of launch 17,000 kg.
Scientific payload 12,500 kg; operated for 100 days in orbit.
Gross mass: 16,000 kg (35,000 lb).
More... - Chronology...
Payload: 12,500 kg (27,500 lb).
Span: 4.10 m (13.40 ft).
First Launch: 1968.11.16.
Number: 1 .
Proton The Proton launch vehicle has been the medium-lift workhorse of the Soviet and Russian space programs for over forty years. Although constantly criticized within Russia for its use of toxic and ecologically-damaging storable liquid propellants, it has out-lasted all challengers, and no replacement is in sight. More...
Associated Launch Vehicles
Proton The Proton launch vehicle has been the medium-lift workhorse of the Soviet and Russian space programs for over forty years. Although constantly criticized within Russia for its use of toxic and ecologically-damaging storable liquid propellants, it has out-lasted all challengers, and no replacement is in sight. Development of the Proton began in 1962 as a two-stage vehicle that could be used to launch large military payloads or act as a ballistic missile with a 100 megaton nuclear warhead. The ICBM was cancelled in 1965, but development of a three-stage version for the crash program to send a Soviet man around the moon began in 1964. The hurried development caused severe reliability problems in early production. But these were eventually solved, and from the 1970's the Proton was used to launch all Russian space stations, medium- and geosynchronous orbit satellites, and lunar and planetary probes. More...
Proton-K Russian orbital launch vehicle. Development of a three-stage version of the UR-500 was authorised in the decree of 3 August 1964. Decrees of 12 October and 11 November 1964 authorised development of the Almaz manned military space station and the manned circumlunar spacecraft LK-1 as payloads for the UR-500K. Remarkably, due to continuing failures, the 8K82K did not satisfactorily complete its state trials until its 61st launch (Salyut 6 / serial number 29501 / 29 September 1977). Thereafter it reached a level of launch reliability comparable to that of other world launch vehicles. More...
Associated Manufacturers and Agencies
Chelomei Russian manufacturer of rockets, spacecraft, and rocket engines. Chelomei Design Bureau, Reutov, Russia. More...
MOM Russian agency overseeing development of spacecraft. Ministry of General Machine Building (Moskva, Russia), Moscow, Russia. More...
Proton Investigation of ultra-high-energy cosmic particles. More...
McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.
JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Web Address when accessed: here.
Kaesmann, Ferdinand, et. al., "Proton - Development of A Russian Launch Vehicle", Journal of the British Interplanetary Society, 1998, Volume 51, page 3.
Afanasyev, Igor, "35 let RN Proton", Novosti kosmonavtiki, 1998, Issue 5, page 40.
Vladimirov, A, "Tablitsa zapuskov RN 'Proton' i 'Proton K'", Novosti kosmonavtiki, 1998, Issue 10, page 25.
Associated Launch Sites
Baikonur Russia's largest cosmodrome, the only one used for manned launches and with facilities for the larger Proton, N1, and Energia launch vehicles. The spaceport ended up on foreign soil after the break-up of Soviet Union. The official designations NIIP-5 and GIK-5 are used in official Soviet histories. It was also universally referred to as Tyuratam by both Soviet military staff and engineers, and the US intelligence agencies. Since the dissolution of the Soviet Union the Russian Federation has insisted on continued use of the old Soviet 'public' name of Baikonur. In its Kazakh (Kazak) version this is rendered Baykonur. More...
1968 November 16 -
11:40 GMT - .
. Launch Complex
: Baikonur LC81/24
. LV Family
. Launch Vehicle
. LV Configuration
: Proton-K 236-01.
- Proton 4 - .
Payload: N-6 s/n 1. Mass: 16,000 kg (35,000 lb). Nation: USSR. Agency: MOM. Program: Proton. Class: Astronomy. Type: X-ray astronomy satellite. Spacecraft: N-6 . Decay Date: 1969-07-24 . USAF Sat Cat: 3544 . COSPAR: 1968-103A. Apogee: 477 km (296 mi). Perigee: 248 km (154 mi). Inclination: 51.6000 deg. Period: 91.80 min. Summary: First launch of the Proton three-stage variant. The satellite studied the nature of high and ultra-high energy cosmic rays and their interaction with atomic nuclei. Scientific payload 12,500 kg; operated for 100 days in orbit. .
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