Thomas Lindblad Professor Emeritus KTH Royal Institute of Technology Stockholm Sweden I have always been interested in rockets. Well, more in the past than now. I participated in the experiments investigating noctilucent clouds launching Nike-Cajun and Nike-Apache sounding rockets into these clouds. Here I am, at the age of 17, checking out the second stage igniter. The second stage had a star burning composite solid propellant, while the first stage was a "surplus" military ground-to-air rocket (Nike) with a heterogeneous liquid propellant.
The Nike Cajun carried 12 grenades and the time difference between registering the bangs were used to measure the temperature, The Apache carried a sampling payload and a parachute designed by the USAF.