Launching campaign Skillingaryd 1986


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Launching campaign Skillingaryd 1986

The campaign was organized by "Youth and Space", (amateurorganization) under the name of ELC-II.

July 16, IRA launched the clubs most advanced twostagerocket. Due to altitude limitations by authorities the rocketmotors had to be downsized as much as possible. Each motor contained only 1.9 kg HTPB+AP  propellant (Hydroxyl Terminated Poly Butadien and Ammoniumperchlorate). Measured specific impulse at static test=217 sec. The rocket however reached 6.2 km in altitude and the summary of the flight is:

Time (s) Event
0.00 Ignition, startweight=16.5 kg
1.80 Burnout of first stage
1.90 Ignition of second stage
3.70 Burnout of second stage, velocity reach 2300 km/h
34.00 Apogee 6,200 meter, no parachute eject due to an electronic error
72.85 Impact

The rocket was never found after impact.

Internal burning star configuration

Preparation of first stage motor. The thin green strings are a securitysystem in case of a misfire. If the motor do not ignite properly, these strings will keep it secured in the tower, and if motor ignite properly the stringswill break off and release the rocket for flight.

Asembling first and second stage together.

Motor is ready for final preparation

Preparation of the instrument, 453 MHz transmitter and onboardcomputer.

Inserting the instrumentsection in the launchingtower

Testing the geometry of the launchingtower and motor


Final adjustment of the motors

Final preparations prior launching

Q: Why is rocket not painted ?
A: Why add extra weight ?



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Last updated: november 09, 2005.


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