List of Proton launches (1965–1969)

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This is a list of launches made by the

Proton rocket between 1965 and 1969. All launches were conducted from the Baikonur Cosmodrome
. The list includes the first five launches, which were conducted under the designations UR-500 and UR-500K, before the selection of the name Proton.

List of Proton launches
1965–1969 · 1970–1979 · 1980–1989 · 1990–1999 · 2000–2009 · 2010–2019 · 2020–2029

Launches

Date/time (UTC) Configuration Serial number Launch pad Outcome
Payload Separation orbit Operator Function
Remarks

1965

Main article: 1965 in spaceflight
16 July 1965
11:16
UR-500
8K82 		107207-01 Site 81/23 Successful
Proton 1 (N-4
#1) 		Low Earth Particle research
Maiden flight of UR-500 8K82
2 November 1965
12:28 		UR-500 8K82 UR500-209 Site 81/23 Successful
Proton 2
(N-4 #2) 		Low Earth Particle research

1966

Main article: 1966 in spaceflight
24 March 1966
21:00 		UR-500 8K82 UR500-211 Site 81/23 Failure
N-4 #3 Low Earth (intended) Particle research
2nd stage engine failure T+122 seconds. Suspected collision with the first stage following separation.
6 July 1966
12:57 		UR-500 8K82 UR500-212 Site 81/23 Successful
Proton 3
(N-4 #4) 		Low Earth Particle research
Final flight of UR-500 8K82

1967

Main article: 1967 in spaceflight
10 March 1967
11:30
D
8K82K/11S824 		107227-01 Site 81/23 Successful
Kosmos 146 (Soyuz 7K-L1 #2P) Highly elliptical Spacecraft test
Maiden flight of UR-500K 8K82K (later Proton-K), first Proton launch with an upper stage
8 April 1967
09:00 		Proton-K/D 8K82K/11S824 228-01 Site 81/23 Failure
Kosmos 154 (Soyuz 7K-L1 #3P) Highly elliptical (intended)
Low Earth (achieved) 		Spacecraft test
Premature separation of fourth stage ullage motors
27 September 1967
22:11 		Proton-K/D 8K82K/11S824 229-01 Site 81/23 Failure
Soyuz 7K-L1 #4L Highly elliptical (intended) Spacecraft test
#1 first stage engine failed to start at liftoff due to a loose plug. Automatic shutdown commanded at T+97 seconds. The LES pulled the L1 descent module to safety.
22 November 1967
19:07 		Proton-K/D 8K82K/11S824 230-01 Site 81/24 Failure
Soyuz 7K-L1 #5L Highly elliptical (intended) Spacecraft test
First launch from Site 81/24. Second stage engine failure due to improper start sequence. Automatic shutdown commanded at T+125 seconds. The LES pulled the L1 descent module to safety.

1968

Main article: 1968 in spaceflight
2 March 1968
22:11 		Proton-K/D 8K82K/11S824 231-01 Site 81/23 Successful
Zond 4 (Soyuz 7K-L1 #6L) Highly elliptical Spacecraft test
Spacecraft later failed
22 April 1968
23:01 		Proton-K/D 8K82K/11S824 232-01 Site 81/24 Failure
Soyuz 7K-L1 #7L Highly elliptical (intended) Spacecraft test
LES malfunction trigged an unintended second stage shutdown. Spacecraft descent module successfully recovered.
14 September 1968
21:42 		Proton-K/D 8K82K/11S824 234-01 Site 81/23 Successful
Zond 5 (Soyuz 7K-L1 #9L) Highly elliptical Spacecraft test
10 November 1968
19:11 		Proton-K/D 8K82K/11S824 235-01 Site 81/23 Successful
Zond 6 (Soyuz 7K-L1 #12L) Highly elliptical Spacecraft test
Spacecraft later failed
16 November 1968
11:40 		Proton-K/D 8K82K/11S824 236-01 Site 81/24 Successful
Proton 4
(N-6 #1) 		Low Earth Cosmic ray research
First Proton-K launch without an upper stage

1969

Main article: 1969 in spaceflight
20 January 1969
04:14 		Proton-K/D 8K82K/11S824 237-01 Site 81/23 Failure
Soyuz 7K-L1 #13L Highly elliptical (intended) Spacecraft test
#3 second stage engine failed due to rotor imbalance. The other three engines managed to complete second stage burn successfully, but the third stage then failed due to a propellant feed malfunction. The spacecraft was detached and successfully recovered.
19 February 1969
06:48 		Proton-K/D 8K82K/11S824 239-01 Site 81/24 Failure
Luna E-8 #201 Highly elliptical (intended) Lunar lander
Payload fairing broke up T+51 seconds. First stage exploded after flying debris ruptured the propellant tanks. Spacecraft was to have deployed a Lunokhod rover
27 March 1969
10:40 		Proton-K/D 8K82K/11S824 240-01 Site 81/23 Failure
Mars-2M #521
 Heliocentric (intended) Mars orbiter
Third stage engine failure due to rotor imbalance.
2 April 1969
10:33 		Proton-K/D 8K82K/11S824 233-01 Site 81/24 Failure
Mars-2M #522
 Heliocentric (intended) Mars orbiter
Missing drain plug caused a first stage engine failure and thrust section fire at liftoff. Booster impacted the ground 40 seconds after launch.
14 June 1969
04:00 		Proton-K/D 8K82K/11S824 238-01 Site 81/24 Failure
Luna E-8-5 #402 Highly elliptical (intended) Lunar sample return
Blok D ignition failure
13 July 1969
02:54 		Proton-K/D 8K82K/11S824 242-01 Site 81/24 Successful
Luna 15 (Luna E-8-5 #401) Highly elliptical Lunar sample return
Spacecraft later failed
7 August 1969
23:48 		Proton-K/D 8K82K/11S824 243-01 Site 81/23 Successful
Zond 7 (Soyuz 7K-L1 #11) Highly elliptical Spacecraft test
23 September 1969
14:07 		Proton-K/D 8K82K/11S824 244-01 Site 81/24 Failure
Kosmos 300 (Luna E-8-5 #403) Highly elliptical (intended)
Low Earth (achieved) 		Lunar sample return
Blok D failure due to defective LOX valve
22 October 1969
14:09 		Proton-K/D 8K82K/11S824 241-01 Site 81/24 Failure
Kosmos 305 (Luna E-8-5 #404) Highly elliptical (intended)
Low Earth (achieved) 		Lunar sample return
Upper control system malfunctioned
28 November 1969
09:00 		Proton-K/D 8K82K/11S824 245-01 Site 81/23 Failure
Soyuz 7K-L1E #1 Medium Earth (intended) Test flight
Third stage engine failure T+556 seconds due to resonant vibration causing the rupture of a propellant feed line.[1]

References

  1. ^ Wade, Mark. "Soyuz 7K-L1E". Encyclopedia Astronautica. Archived from the original on 6 September 2010. Retrieved 25 April 2010.
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