View Single Post
  #27  
Old 04-10-2019, 03:33 AM
blackshire's Avatar
blackshire blackshire is offline
Master Modeler
 
Join Date: Jan 2009
Location: Fairbanks, Alaska
Posts: 6,507
Default

Quote:
Originally Posted by tbzep
Is the A10 nozzle eroded? That would significantly lower thrust.

Maybe some impurity got into the BP during the motor making process and lowered the thrust.
If a M.E.S.S. form submission is in order here, that would be well worth inspecting the motor for. That happened with an Omega of yours once, if memory serves (where the clay of one of the stages' D12 nozzles asymmetrically eroded, making the rocket pitch over under power and hit the ground hard--you even caught it on camera too, I think). Even perfectly symmetrical erosion of a clay nozzle (as unlikely as such an occurrence would be) would drastically reduce the motor's thrust, regardless of the motor's size and rated thrust-time curve.
__________________
Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
http://www.lulu.com/content/paperba...an-form/8075185
http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com.
NAR #54895 SR
Reply With Quote