#1
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Booster Ignition
I had another idea pop into my head and thought I would ask here.
Small rocket stages are generally connected directly so the booster can ignite the second stage. I was wondering if a hollow, engine size thermocouple could generate enough current to remotely fire an ignitor? I have never done a two stage rocket and have no idea what the ejection is like on a booster. I am guessing it has to be a mini blow torch to ignite a second engine... __________________________________________________ _____ |
#2
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Quote:
Not with a single thermocouple. You could conceivably do ti with a bunch of them and an igniter that doesn't need a lot of current but you'd be adding a lot of weight and there are better ways to get the job done.
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Bill Spadafora http://www.billsplumbing.com billspad@comcast.net bill@billsplumbing.com |
#3
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That is what I was wondering. Could you make one compact enough but still provide enough current for ignition? I was thinking of something the same shape as an engine casing with a hollow core. Whatever flame the booster produced could shoot up through it and create a current.
But, it was just a passing thought. ___________________________ |
#4
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Too much weight and not enought time either.
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#5
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Gap-stage.
You can have the motors separated by about 10 or 11 inches. The booster stage is a section of body tube with a coupler and two opposed vent holes at the front. Works great and it's easy. Attached is a simple 2-stage rocket I flew in my LUNAR days.
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John Adams "There is a lot of rocketry under 20ns" Last edited by Ironnerd : 09-05-2013 at 08:07 AM. Reason: Added ORK/RKT file |
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