Title

Two-Stage, High-Altitude Rocket with Internal Skeleton Design Entered in Advance Category of 7th ESRA IREC

Author(s) Information

Samuel S. Bowman, California Polytechnic State University, San Luis ObispoFollow
Kevin J. Byrne, California Polytechnic State University, San Luis ObispoFollow
Allen Capatina, California Polytechnic State University, San Luis ObispoFollow
Aliki S. Loper-Leddy, California Polytechnic State University, San Luis ObispoFollow
Joshua A. Van Schoyck, California Polytechnic State University, San Luis ObispoFollow

College - Author 1

College of Engineering

Department - Author 1

Aerospace Engineering Department

Degree Name - Author 1

BS in Aerospace Engineering

Date

8-2012

Primary Advisor

Dianne DeTurris, College of Engineering, Aerospace Engineering Department

Abstract/Summary

A high-altitude, two-stage rocket was designed, built, and entered in the advanced category of the 7^th Annual Experimental Sounding Rocket Association (ESRA) Intercollegiate Rocketry Engineering Competition (IREC). The rocket, called AJAKS, featured an internal skeleton made of carbon fiber rods, and a combination of plywood, carbon, and aluminum bulkheads. Loads were driven through the internal structure, with an outer skin tube providing an aerodynamic surface. A unique separation device was developed to ensure proper stage separation. The competition required the rocket to carry a 10-lb payload, which was chosen by the team to consist of an IMU and data logging computer for recording the descent profile, a CubeSat test unit, and a digital video recorder. Prior to the competition launch, AJAKS was test launched on May 5^th in the Mojave at the Friends of Amateur Rocketry (FAR) launch facility. During the test launch AJAKS suffered a PIRM malfunction and the main parachute did not deploy. Following the test launch, the second stage of the rocket was rebuilt with a stronger payload configuration. The ESRA IREC was held on June 21^st to the 24^th. AJAKS was launched on the 23^rd and during ascent the second stage became unstable and reached an altitude of only 6,000 ft. Both stages suffered damage upon landing.

URL: https://digitalcommons.calpoly.edu/aerosp/102