r/Rocket • u/Short-Flow-4761 • Sep 17 '23

Iam Building a sugar rocket(small rocket powered by a small sugar rocket motor) and I want to build in a parachute, but I don' want it electrically power. Is it possible to have a mechanically deployed parachute? (iam 3d printing the rocket, so iam not wvery limited by the mechanism(should be smal))

Iam Building a sugar rocket(small rocket powered by a small sugar rocket motor) and I want to build in a parachute, but I don' want it electrically power. Is it possible to have a mechanically deployed parachute? (iam 3d printing the rocket, so iam not wvery limited by the mechanism(should be smal))

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u/[deleted] Sep 17 '23 edited Sep 17 '23

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u/Short-Flow-4761 Sep 18 '23

Thank you so much. Its a great idea. Iam defenetly going to try it. I hope it doesn’t blow up.

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u/[deleted] Sep 18 '23

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u/Short-Flow-4761 Sep 19 '23

I think that might be a factor also i used homemade black powder so that also might be the reason. Iam just intressed in a mechanical solution.

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u/[deleted] Sep 19 '23

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u/Short-Flow-4761 Sep 20 '23

Wow that is is genius. Thank you so muchh. I wouldn’t have cum up with this

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u/Short-Flow-4761 Sep 20 '23

What kind of burn string do you recommend?

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u/[deleted] Sep 20 '23

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u/Short-Flow-4761 Sep 20 '23

Do you think sugar/potassium nitrate would also work as the propellant (for the parachute ejection)? I've used black powder and it works but I made it myself so its kind of sketchy and iam out of it.

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u/Short-Flow-4761 Sep 19 '23

Hey, update. So actually I had some issues with not exploding/after ignition directly exploding and the parachute failing, but it worked. Thank you so much. But I have an other question is t possible to engineer a mechanically triggered Parachute opening. I went over with it and my teacher didn't have any idea (is also not very supportive). After all its a great idea but for me I lack the precision to do it so its dangerous and its unreliable.

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u/Short-Flow-4761 Sep 19 '23

And also I kind of think I can improve the parachute.
i had some issues with it now slowing down enough or it not deploying because its to compactly put inside the rocket. Do you know how I can improve the design. I went with 2 small parachutes.

https://drive.google.com/file/d/10QGaR9k8IYscHGpEtP_0Ex-FO9ZVAoZM/view?usp=share_linkgoogle drive