View Single Post
  #6  
Old 04-03-2008, 11:39 AM
Shreadvector's Avatar
Shreadvector Shreadvector is offline
Launching since 1970.
 
Join Date: Mar 2005
Location: Southern California
Posts: 2,188
Default

Quote:
Originally Posted by ghrocketman
Is the F22-5 a mandatory required motor for TARC ?
This seems quite low on average thrust for throwing two eggs into the air to me.
I would be selecting a much higher avg thrust F for lofting two eggs such as the F50T SU 29mm or F40W RMS29 or F52T RMS29.

Blackjack motors are actually LOUSY for lifting payloads; they are exactly the opposite for what you want for payload lifting; you WANT high-thrust spike/short thrust duration, not long-burn low-thrust motors.

If this is a mandatory motor for this challenge, the individual that wrote the criteria may have bumped his head on something prior to choosing the motor requirements.


it is absolutely not the only motor allowed. A HUGE list of certified motors is published. I and others have answered this exact identical duplicate thread/question on The Rocketry Forum and your suggestions/advice is absolutely correct.
__________________
-Fred Shecter NAR 20117 (L2)
Southern California Rocket Association, NAR Section 430
Reply With Quote