My TARC rocket

E's through G's

My TARC rocket

Postby JJSR » Fri Dec 16, 2016 1:19 am

So, with the possibility of having a few more TARC teams joining us at the field in coming months, I thought I'd find out more about the rules and rocket for this year.

The rules;
1. Must not exceed 650 grams gross weight at liftoff
2. use body tubes of two different diameters,42 millimeters & , (smaller-diameter lower (motor and fin) end of the rocket)
(the larger one must be large enough to contain the egg (which may be up to 45 millimeters) plus padding and altimeter.

2.b. Each tube must have no less than 150 millimeters (5.91 inches) of exposed length, and the overall length of
the rocket must be no less than 650 millimeters (25.6 inches) as measured from the lowest to the highest points of the airframe structure in launch configuration.

3. Any number of motors may be used, but the motors used must not contain a combined total of more than 80 Newton-seconds of total impulse.

4. The rocket must separate into at least two pieces for recovery,
with one piece containing the egg payload and the altimeter and not the expended rocket motor.

2017rocketTARC.jpg


The Mission;

1. Rockets must contain and completely enclose one raw hen's egg of 55 to 61 grams weight and a diameter of 45 millimeters or less

2. The flight duration goal is a range of 41 to 43 seconds.

3. Target altitude 775 feet (236 meters)

This is what I came up with so far;

92516 001.JPG

92516 006.JPG
baffle

92516 007.JPG
paper transition & lots of center rings

I don't have any pictures of the nose cone w/egg and altimeter yet, but you can see its a Easter egg.
BT-58 lower section, BT-70 upper, if I could find my ruler I'd tell ya how long it is. LOL
Joe, "FLY EM HIGH"
I no doubt deserved my enemies, but I don't believe I deserved my friends.
JJSR
 
Posts: 1528
Joined: Tue Sep 18, 2012 2:28 pm

Re: My TARC rocket

Postby JJSR » Fri Dec 23, 2016 9:56 am

Okay, for the nose cone I have a 80mm x 55mm Easter egg. For cushioning, 4 pieces of pipe insulation glued into the two halves.
Bolted to a coupler with a 10/32 althread
92516 034.JPG

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92516 038.JPG


She came out to be 400 grams with simulated motor*, 29 1/2" long, two nylon chutes - 22" for egg cone, 22" for the rocket.
92516 040A.JPG


*BB's in a baggie equal to an F-40 @ 130 grams
Joe, "FLY EM HIGH"
I no doubt deserved my enemies, but I don't believe I deserved my friends.
JJSR
 
Posts: 1528
Joined: Tue Sep 18, 2012 2:28 pm


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