Ejection canisters

The Rocketry Forum

Help Support The Rocketry Forum:

Scott Nokes

Well-Known Member
Joined
Jan 26, 2020
Messages
49
Reaction score
1
Can you please show me how ejection canisters are ignited
Is it a small board of electronics that send the electricity thank you
















canisters
 

DragonRocketry

Sponsor
TRF Sponsor
TRF Supporter
Joined
Feb 9, 2021
Messages
112
Reaction score
190
Altimeter fires an e-match that lights the BP in the ejection canister
IMG_1313.jpg
 

cwbullet

Obsessed with Rocketry
Staff member
Administrator
TRF Lifetime Supporter
Global Mod
Joined
Jan 24, 2009
Messages
26,973
Reaction score
4,462
Location
Glennville, GA
I would recommend you consider attending a launch to see one in person. You can ask lots of questions in person and even see them work.
 

Scott Nokes

Well-Known Member
Joined
Jan 26, 2020
Messages
49
Reaction score
1
My BBX separates at the baffle joint which is glued into the booster. The payload section good onto the coupler at the booster. For the election charge pod have to face frontwards of can I fix the to the payload bulkhead where they would be facing backwards(the baffle section thank you
 

cwbullet

Obsessed with Rocketry
Staff member
Administrator
TRF Lifetime Supporter
Global Mod
Joined
Jan 24, 2009
Messages
26,973
Reaction score
4,462
Location
Glennville, GA
I tested two of my 3D printed ones today in a rocket - 100% success and they will be reused.
 

Scott Nokes

Well-Known Member
Joined
Jan 26, 2020
Messages
49
Reaction score
1
God job. Do the tubes have to point towards the front of the rocket it can they go on the back of the payload ring fl facing the rear of the rocket
 

cwbullet

Obsessed with Rocketry
Staff member
Administrator
TRF Lifetime Supporter
Global Mod
Joined
Jan 24, 2009
Messages
26,973
Reaction score
4,462
Location
Glennville, GA
God job. Do the tubes have to point towards the front of the rocket it can they go on the back of the payload ring fl facing the rear of the rocket
They point away from you altimeter.
 

Scott Nokes

Well-Known Member
Joined
Jan 26, 2020
Messages
49
Reaction score
1
The booster tube has the baffle system glued half way in and acts as the coupler too. So if I put the chute release in the avionics bayand the ejection pods on top of the baffle, what connectors are used for when the two tubes separate,I assume some sort of quick release wire for separation. It's there LOC BBX4 inch I'm building thank you
 

teepot

Well-Known Member
TRF Supporter
Joined
Dec 8, 2019
Messages
1,109
Reaction score
682
Location
Pahrump, Nevada
All of the canisters are on the Av bay bulkheads. The ones for the main is on the bulkhead pointing up. The ones for the drouge are on the bulkhead pointing down. There are no canisters on the baffle. Please post a picture of your av bay and baffle top.
 

Scott Nokes

Well-Known Member
Joined
Jan 26, 2020
Messages
49
Reaction score
1
This is my kit and shows the top of the baffle.
All of the canisters are on the Av bay bulkheads. The ones for the main is on the bulkhead pointing up. The ones for the drouge are on the bulkhead pointing down. There are no canisters on the baffle. Please post a picture of your av bay and baffle top.
Here's the kit and showing the baffle, except mine built, these were from loc,s website.
Please can you show me would I put the ejection charge on top of the baffle or the bulkead on the lower end of the avionics tube
 

Attachments

David_Stack

Well-Known Member
Joined
Mar 20, 2013
Messages
122
Reaction score
104
Location
Williamsburg, VA.
Scott;

Those are likely empty shell casings. Some folks use them, some use latex glove finger tips, centrifuge cannisters, PVC tubing, purpose build ejection charge cannisters by specialized manufacturers, etc.

Depends how much room you have, how much black powder is required (sized based on the amount of body tube volume you need to pressurize), and personal preference by and large.

Where are you physically located? There is nothing quite so beneficial as being able to see AV Bays in person, and be able to ask questions face to face...

r/
Dave
 

Scott Nokes

Well-Known Member
Joined
Jan 26, 2020
Messages
49
Reaction score
1
Scott;

Those are likely empty shell casings. Some folks use them, some use latex glove finger tips, centrifuge cannisters, PVC tubing, purpose build ejection charge cannisters by specialized manufacturers, etc.

Depends how much room you have, how much black powder is required (sized based on the amount of body tube volume you need to pressurize), and personal preference by and large.

Where are you physically located? There is nothing quite so beneficial as being able to see AV Bays in person, and be able to ask questions face to face...

r/
Dave
Thanks Dave

I'm in perryville, missouri.
See my baffle joins the booster and the avionics tube together. So I was going to screw that joint together and have the rocket sperate between the avionics bay and payload bay. So I intending to put charge well on that bulkhead at that joint, only thing is they will be facing towards the rear, is that ok
 

teepot

Well-Known Member
TRF Supporter
Joined
Dec 8, 2019
Messages
1,109
Reaction score
682
Location
Pahrump, Nevada
Thank you it does, are these for two different rockets
Yes. The blue tube one is for a specific rocket. The other can be moved from one rocket to another. And yes those are shell casings. .45 long colt. I've found the Apogee PVC ones are too small.
 

Scott Nokes

Well-Known Member
Joined
Jan 26, 2020
Messages
49
Reaction score
1
Yes. The blue tube one is for a specific rocket. The other can be moved from one rocket to another. And yes those are shell casings. .45 long colt. I've found the Apogee PVC ones are too small.
This is a quick scribbled of his I was going to do mine. Do you think my charge well is ok we're I have it or could I move it on top of the baffle ring.
 

Attachments

teepot

Well-Known Member
TRF Supporter
Joined
Dec 8, 2019
Messages
1,109
Reaction score
682
Location
Pahrump, Nevada
Are your avionics in the open tube? Or in the coupler in the tube with the nose cone?
 

DAllen

Well-Known Member
Joined
Jan 18, 2009
Messages
4,983
Reaction score
1,002
Used D12 motors make for excellent ejection charge holders in case anyone was wondering.
 

Scott Nokes

Well-Known Member
Joined
Jan 26, 2020
Messages
49
Reaction score
1
Are your avionics in the open tube? Or in the coupler in the tube with the nose cone?
Well, I don't have my avionics yet, so I can do it which ever way is best,
My intention was to go in the coupler of the open tube which I believe is called the payload tube/very front tube
 

teepot

Well-Known Member
TRF Supporter
Joined
Dec 8, 2019
Messages
1,109
Reaction score
682
Location
Pahrump, Nevada
From your drawing. Glue the center tube to the booster tube. That is where the drouge goes. Attach the coupler/av bay to the payload tube with plastic rivets or screws. Use shear pins to hold the nose cone on so it doesn't come off when the drouge charge fires. The payload tube is where the main goes. Avionics are housed in the coupler/av bay between the two bays.
 
Top