Skip to main content
Space Exploration

Return to Question

edited tags
Link
uhoh
uhoh
  • 151k
  • 56
  • 505
  • 1.6k
Tweeted twitter.com/#!/StackSpaceExp/status/419284356252049408
Replaced "dead bolt" or "deadbolt" with "explosive bolt" which is a better suited word for a pyrotechnic fastener. Dead bolt is a type of locking mechanism and isn't used for misfiring explosive bolts. See https://en.wikipedia.org/wiki/Dead_bolt ;)
Source Link
TildalWave
TildalWave
  • 76.4k
  • 13
  • 277
  • 462

Is there an explanation for repeating Soyuz accidents involving deadboltsmisfiring of explosive bolts?

In the Soyuz program, quite a few accidents have been caused by malfunctions of the deadexplosive bolts:

  • Soyuz 11: deadExplosive bolts designed to fire sequentially fired simultaneously instead, causing a fatal malfunction of a valve.
  • Soyuz 7K-T No.39: secondSecond and third stages of the booster did not separate properly.
  • Soyuz 5, TMA-10, and TMA-11: theThe service module did not separate from the reentry module

Most other Soyuz accidents seem to have been one time occurrences, but problems with the deadexplosive bolts misfiring seem to be recurring. One would think that deadexplosive bolts are a quite simple and robust technique, so this is a bit unexpected.

Is there an explanation for these frequent issues with deadexplosive bolts?

Is there an explanation for repeating Soyuz accidents involving deadbolts?

In the Soyuz program, quite a few accidents have been caused by malfunctions of the dead bolts:

  • Soyuz 11: dead bolts designed to fire sequentially fired simultaneously instead, causing a fatal malfunction of a valve.
  • Soyuz 7K-T No.39: second and third stages of the booster did not separate properly.
  • Soyuz 5, TMA-10, and TMA-11: the service module did not separate from the reentry module

Most other Soyuz accidents seem to have been one time occurrences, but problems with the dead bolts seem to be recurring. One would think that dead bolts are a quite simple and robust technique, so this is a bit unexpected.

Is there an explanation for these frequent issues with dead bolts?

Is there an explanation for repeating Soyuz accidents involving misfiring of explosive bolts?

In the Soyuz program, quite a few accidents have been caused by malfunctions of the explosive bolts:

  • Soyuz 11: Explosive bolts designed to fire sequentially fired simultaneously instead, causing a fatal malfunction of a valve.
  • Soyuz 7K-T No.39: Second and third stages of the booster did not separate properly.
  • Soyuz 5, TMA-10, and TMA-11: The service module did not separate from the reentry module

Most other Soyuz accidents seem to have been one time occurrences, but problems with the explosive bolts misfiring seem to be recurring. One would think that explosive bolts are a quite simple and robust technique, so this is a bit unexpected.

Is there an explanation for these frequent issues with explosive bolts?

edited title
Link
user12
user12

Is there an explanation for repeating Soyuz accidents with death boltsinvolving deadbolts?

Source Link
oefe
oefe
  • 2.2k
  • 19
  • 24