Firefly Aerospace on Twitter: "Engine qual involves testing excursion boundaries & hardware durability. Failures have positive connotation because we unambiguously find operation limits. Trick is to minimize collateral damage. This video is a failure of a Lightning thrust chamber on its 21st hotfire attempt.… https://t.co/CZNGO3a5oF"

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Engine qual involves testing excursion boundaries & hardware durability. Failures have positive connotation because we unambiguously find operation limits. Trick is to minimize collateral damage. This video is a failure of a Lightning thrust chamber on its 21st hotfire attempt.pic.twitter.com/o0L1z374wy

11:57 AM - 19 Dec 2018

87 Retweets
351 Likes

10 replies 87 retweets 351 likes

1. Justin Payne‏ @crashfrog 19 Dec 2018
  Replying to @Firefly_Space
  
  "unambiguously finding operation limits" is my new phrase for what I do at work
  
  2 retweets 36 likes
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1. Gerald R Everett‏ @GREverett66 19 Dec 2018
  Replying to @Firefly_Space
  
  If your not blowing up an engine now and then you aren't trying hard enough.
  
  1 retweet 16 likes
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1. Jonathan‏ @JonathanOC 19 Dec 2018
  Replying to @Firefly_Space
  
  As engine failures go, that wasn't so bad!
  
  15 likes
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1. Ryan Clark‏ @BugRib 19 Dec 2018
  Replying to @Firefly_Space
  
  That’s what testing is for. You’ll probably learn something from this that will prevent mission failures in the future. Just ask SpaceX. Keep up the good work!
  
  3 likes
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1. Nate B‏ @nj8z 19 Dec 2018
  Replying to @Firefly_Space
  
  If I've learned one thing from a lifetime of fascination with things that go fast in the sky, it's that green flames mean boron, usually TEB. The chamber rupture must've taken out some starter plumbing/tankage too?
  
  1 like
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1. CharlieOscarQuebec‏ @moddedLimes 19 Dec 2018
  Replying to @Firefly_Space
  
  How many hot fire tests for one engine is typical?
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1. Manuel Micheli‏ @ManuelMicheli1 19 Dec 2018
  Replying to @Firefly_Space
  
  Was the combustion chamber failure caused by thermal or hoop stresses?
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1. Charles Cook‏ @CookCharles 20 Dec 2018
  Replying to @Firefly_Space @AmericaSpace
  
  Have the valves seated yet?
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