Rear Ejection Recovery Systems, how?

Rear Ejection Recovery Systems, how?

Post by Carl Steckl » Thu, 26 Oct 1995 04:00:00



I am working on a dual recovery system for a 2.56 airframe. There is not
enough space to fit 2 front ejection systems side by side. I haven't been
able to figgure a way to do them one over the other either. So I would like
to know some more about rear ejection recovery systems. Also my girlfriend's
son is working on a cone rocket and could use the same information. Any and
all help would be appreciated. Thanks

--
Carl (ex-jarhead) Semper Fi
KB2SGX, TRA #3561, NRA  #62911
"For those who fought for it, freedom has a flavor the
protected will never know"
Unknown Marine, Khe Sahn, Viet Nam

 
 
 

Rear Ejection Recovery Systems, how?

Post by kaplo.. » Sun, 29 Oct 1995 04:00:00


Quote:

> I am working on a dual recovery system for a 2.56 airframe. There is not
> enough space to fit 2 front ejection systems side by side. I haven't been
> able to figgure a way to do them one over the other either. So I would like
> to know some more about rear ejection recovery systems. Also my girlfriend's
> son is working on a cone rocket and could use the same information. Any and
> all help would be appreciated. Thanks

Rear ejection tends towards very low reliability. I'd look into electronics,
either a multi function timer, or an Adept altimiter. With electronically
activated ejections (i.e. Robbie Rockets or equivalent), there is no need
for access to the motor compartment. Each recovery system becomes a payload
canister, and can be moved farther forward to improve stability.

For paper/plastic cone rockets like the old centuri point, the flying
saucers, or my happy meal conversions, just eject the motor and the drag
will recover the rest of the model safely.


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