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Old 04-13-2022, 06:29 PM
shockwaveriderz shockwaveriderz is offline
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Quote:
Originally Posted by Ez2cDave
George,

So, what was the performance gain with a piston tube of that length ?

I believe there is a point of "diminishing returns", at some point, right ?

Dave F.


Dave it depends on a number of factors:

Piston length
Piston diameter
Model weight
Engine used and it's thrust characteristics

For example for 13mm motors of type A3 and A10, smaller diameter piston tubes(10mm) produce more pressure than 13mm tubes do.

Higher thrust motors produce more pressure than low thrust at the same length

Egglofters due to their incresed weight benefit from longer piston tubes than lighter models do.

I have a thread over on TRF with some pressure info based upon several R&D reports.

https://www.rocketryforum.com/threa...pressor.172117/

Basically there is an optimized piston tube more or less for a particular model rocket motor.

Hth
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