ASK 't Harde, 22 April, 2005 - Thursday 21 April started with the set up of the launch tower, motor test tower and the interior of the command post. This was followed by the preparation and inspection of the rockets and motors. Before dinner there was a Kalinitrox motor test. CMT0502 was a rerun of the CMT0501 test of 13 February, because the Kalinitrox wasn't properly mixed as we discovered later. The test however was cursed, although successful, the recorded data was written over. After dinner some final preparations were done, as well as preparing the Kalinitrox test motor again. The day ended as usual with a great evening in the mess.
Friday morning started with an early breakfast, followed by the last set up tasks at the launch site. The first launch was Robin Trap's Weasel 29 on an AeroTech G33J. It was a successful, spectacular launch. It was followed by the launch of the Spectre II, which was built by Leon Krancher and Mark Uitendaal. It featured an onboard camera and one of their PVC J420-SB motors. Although it reached a not so impressive altitude of 320 metres, the camera system worked well and produced a spectacular video.
The next two rockets that were prepared in the launch towers were the AMRAAM 3 of René Hofsteden and the Cyclops of Remy van Herwijnen. The AMRAAM 3 had a very good flight on an AeroTech I154J, but unfortunately it didn't parachute. It fell down horizontally and during landing only two fins came loose. The Cyclops launch was delayed as the igniter was pulled out of the motor by the cable attached to the AMRAAM 3's igniter.
When a new igniter was placed in the motor of the Cyclops, the A4 of Jan-Hein Ramakers was meanwhile prepared in the launch tower. The later was launched first with a Caveman Basterd motor and was quicker than expected. It flew a bit wobbly and the parachute became entangled, but the rocket landed undamaged. The Cyclops was launched shortly there after. An AeroTech H180W propelled the rocket to great heights and the rocket landed safely.
Kalinitrox motor test CMT0503 was prepared next. It differed from CMT0502 in the smaller throat of 13mm instead of 13.5mm. This time all went well and the test was a success. The data for this test is: Pmax: 1512kPa, C*: 886m/s and Ismax: 123s.
The day ended with some good model rocket launches of rockets from Pleun Punt and René Hofsteden, whose F-powered Optima provided the most spectacle.