How do I figure out how much weight to add to the nose cone of my up scaled space shuttle rocket? It will fly on 3 e9-6 engines.

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Download Open Rocket (free) or RockSim(trial), plug in your parts and watch the CG and CP move as you add/subtract nose weight. It is a glider, right?

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Clear skies and fair winds,
Mike

NAR 31689

No it will recover on a 24" parachute. Fixed the edges of the wings with wood putty and bondo.

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Finished my up scaled space shuttle challenger with decals from sandman.

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Wow - very nice

Tried to launch it over Labor Day weekend and this is the result. All three engines ignited however one engine blew causing the nose to be ejected and the rocket to crash into the ground a few feet off the rod.

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I think you would be better off using E12-6 engines for extra liftoff "kick" once you get the CG worked out.
Not sure if you are aware or not, but the weight of 3 Estes E engines has enough propellant weight to be considered HPR.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC !

(Sob)
Contact Estes. They are very good at standing behind their products. They want to know when something goes wrong.

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Clear skies and fair winds,
Mike

NAR 31689

Actually, it takes 4 BP E motors to be considered high power. The limit is 125 grams of propellant. One E motor is just under 40.


Bill

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It is well past time to Drill, Baby, Drill!

If your June, July, August and September was like this, you might just hate summer too...

Please unload your question before you ask it unless you have a concealed harry permit.

: countdown begin cr dup . 1- ?dup 0= until cr ." Launch!" cr ;

Give a man a rocket and he will fly for a day; teach him to build and he will spend the rest of his days sanding...

GH is too busy trying to take a crap in someone's toilet tank without falling off and breaking his leg to be bothered with details... LOL

(ducks and runs...) Hehehe... Later! OL JR

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