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The Exhaustless Peregrine – a CO2 deployment device

A Discussion on CO2 Ejection

Some have asked “Why would I want to use a CO2 ejection system in my rocket?” Well, there are actually a couple of reasons you might want to consider CO2 deployment. The first and most obvious reason is that it is clean! There is very little flame or the resulting BP residue all over the inside of your rocket! As a result of not having a large BP flame, you can do away with most of the flame resistant cloths that now protect you valuable parachutes! If there was no other reason for going to CO2 deployment, a clean interior is more than enough motivation! However there is another reason that you might want to consider CO2 Deployment and that is high altitude flights.


It is well known that BP begins to burn inconsistently at much over 20,000’ ASL and will not sustain a burn at over 50,000’. There have been many attempts and devices made to try and contain BP so that it will burn at high altitudes, some of them have worked, many have not. CO2 deployment systems, such as the Peregrine and the RAPTOR, where the small pyro charge is sealed from the outside air (or the lack there of), are capable of deployment at any altitude. The Peregrine and RAPTOR has been tested down to about 28.5 inches Hg which simulates to about 80,000 feet!

The first CO2 ejection device from Tinder Rocketry was the Peregrine. The Peregrine is an Exhaustless CO2 ejection device intended for high powered Rockets.

What makes the Exhaustless Peregrine different from any other CO2 ejection device you ask? Well actually several things:

First off and quite importantly there is no apparent pyro exhaust from this device! As a result, the Exhaustless Peregrine could be and was designed to be mounted completely inside the avionics bay and right next to the altimeters!

Secondly, since the Exhaustless Peregrine is mounted completely inside the AV-bay it sends the CO2 ejection charge through an opening in the bulkhead. This very important feature allows for the parachute compartment to be packed tighter than could possibly be achieved with another CO2 ejection device that might be mounted on both sides of the bulkhead.

Lastly, the Exhaustless Peregrine does not care who made the CO2 cartridge. As long as the proper cartridge is put in the particular housing, it does not care if you got the cartridges from Tinder Rocketry or Wal-Mart. The Exhaustless Peregrine also does not care if the CO2 cartridge is threaded or not, as long as it is the proper length and diameter. The 8 gram and the 12 gram cartridges are all industry standard and can be purchased just about anywhere worldwide!

Click HERE to download the PDF instruction manual

Standard charge cup (above) for use with Dual Q2G2 initiators. The V2 charge up (below) for E-match initiators.

The New Peregrine RAPTOR is another CO2 ejection system designed and manufactured by Tinder Rocketry for parachute deployment in high powered rockets at any altitude. The newest Peregrine, The RAPTOR, is lightweight, compact and versatile! It is designed to be easy to use and works with many CO2 cartridges ranging in size from 20 to 85 grams! Best of all, The Peregrine RAPTOR is for all practical purposes acceleration immune regardless of mounting orientation!

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