Q-Jet Failure

Discussion in 'Low Power Rocketry (LPR)' started by hermannj, Jun 1, 2019.

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  1. Jun 1, 2019 #1

    hermannj

    hermannj

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    IMG_1750.jpg

    Had an interesting cato today.
     
  2. Jun 1, 2019 #2

    KennB

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  3. Jun 2, 2019 #3

    Theory

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    Oh no! What motor was it?

    That sure is a new one

    Is she repairable?
     
  4. Jun 2, 2019 #4

    hermannj

    hermannj

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    It was a B4-4. I thought it was a total loss but a guy in my club said he was going to repair it.
     
  5. Jun 3, 2019 #5

    Wallace

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    Ouch. Please take minute or so to file a mess report. You're not ratting/complaining, just helping find the potential problem..
     
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  6. Jun 4, 2019 #6

    shreadvector

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  7. Jun 4, 2019 #7

    Zeus-cat

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    It appeared to be a normal flight, but there was no ejection and the rocket lawn darted. So the problem occurred during the delay.
     
  8. Jun 4, 2019 #8

    manixFan

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    Video in linked article did not work. Here's the official version:



    Actually, according to Northrup Grumman it wasn't nearly as bad as the OP's failure. They claim "the test was successful, the motor performed nominally, the observed behavior of the aft exit cone of the nozzle will be investigated." No holes were burned in the side of the motor. It looked very dramatic and it clearly affected the thrust plume, but the booster motor survived intact. Almost like a spit liner.


    Tony
     
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  9. Jun 4, 2019 #9

    Nytrunner

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    Off topic: Burn and plume looked great. Probably just the nozzle insulation or structure needs a quick revisit.

    On topic: Hope the rocket gets repaired and flys again! Scars make good rocket stories. (and file a Mess report as suggested)
     
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  10. Jun 4, 2019 #10

    kuririn

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    Looks like the OP's aft motor tube got singed badly as well. Don't think that is nominal.
     
  11. Jun 4, 2019 #11

    Wallace

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    Un-nominal?
     
  12. Jun 4, 2019 #12

    Wallace

    Wallace

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    Or...Less Than?
     
  13. Jun 4, 2019 #13

    Wallace

    Wallace

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    <nominal?
     
  14. Jun 4, 2019 #14

    Wallace

    Wallace

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    Gotta love language. Rare that a person can "get" it right, yet so easy to be "called" wrong?
     
  15. Jun 4, 2019 #15

    kuririn

    kuririn

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    Euphemists would call it an anomaly.
     
  16. Jun 4, 2019 #16

    Wallace

    Wallace

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    Aye..
     

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