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Thrust ring or bulkhead - Printable Version

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Thrust ring or bulkhead - Liquid rocman - 02-17-2016

Guys how to transfer the thrust to body of rocket 
And I know that I need to use bulkhead or thrust ring
 And if it's detailed information than it be very good
 TThank you


RE: Thrust ring or bulkhead - Bat-mite - 02-17-2016

Your question is too vague. How big is the rocket? What kind of motor? What material is it constructed of?


RE: Thrust ring or bulkhead - Liquid rocman - 02-18-2016

I have a fabricated rocket motor of k class diameter of  2 inch it is fabricated from steel


RE: Thrust ring or bulkhead - Bat-mite - 02-18-2016

So, the simplest answer to your question is: it's up to you. Whether the motor "pulls" against a thrust plate at the rear of the rocket, or "pushes" against a thrust ring inside the rocket, you are still directing the thrust upward against the airframe.

You realize, I hope, that in order to launch a rocket with a K impulse motor, you need an FAA waiver; otherwise it is illegal.


RE: Thrust ring or bulkhead - Liquid rocman - 02-19-2016

(02-18-2016, 05:15 AM)Liquid rocman Wrote: I have a fabricated rocket motor of k class diameter of  2 inch it is fabricated from steel

(02-18-2016, 05:27 PM)Bat-mite Wrote: So, the simplest answer to your question is:  it's up to you.  Whether the motor "pulls" against a thrust plate at the rear of the rocket, or "pushes" against a thrust ring inside the rocket, you are still directing the thrust upward against the airframe.

You realize, I hope, that in order to launch a rocket with a K impulse motor, you need an FAA waiver; otherwise it is illegal.
No not india because in india there is no rocketry association and no rules in model rocketry here  there are no limition


RE: Thrust ring or bulkhead - Bat-mite - 02-19-2016

Okay, didn't know you were in India.  My advice to you is to be careful.  Dealing with explosives and combustibles is dangerous.  Read lots of books.  A good one is Mark Canepa's Modern High Power Rocketry 2, available at Amazon.  Also, download OpenRocket and simulate everything you do before you do it.  Good luck, be safe.


RE: Thrust ring or bulkhead - Liquid rocman - 02-19-2016

(02-19-2016, 10:41 AM)Bat-mite Wrote: Okay, didn't know you were in India.  My advice to you is to be careful.  Dealing with explosives and combustibles is dangerous.  Read lots of books.  A good one is Mark Canepa's Modern High Power Rocketry 2, available at Amazon.  Also, download OpenRocket and simulate everything you do before you do it.  Good luck, be safe.

No thanks I have so many good sources and many good book 
I think you should read the book Rocket propulsion elements 
AAnd a few good websites like richard nakka and the fintels


RE: Thrust ring or bulkhead - Liquid rocman - 02-23-2016

Guys can you explain me in detail how you guys transfer the thrust to body pls and 
TThank you to all


RE: Thrust ring or bulkhead - Bat-mite - 02-23-2016

There are two ways to do that. Either the motor pushes against a forward thrust ring at the top of the motor mount tube, or else there is a thrust ring on the end of the motor that pushes against the aft end of the motor mount tube. Black powder motors, like Estes and Quest, use the former; composite motors like Aerotech and Cesaroni use the latter. Either way, there needs to be some form of motor retention so that it does not rip forward through the rocket during thrust, and is not ejected out of the aft end when the ejection charge fires.

Centering rings hold the motor mount tube inside the airframe.