Click on the photo above to load a video of this flight (1.4 meg MGP file, 15 seconds of video)	Quick summary: Flight duration:  Thrust duration: Altitude at apogee:  Fuel Weight:  Nozzle throat:  Launch weight: Total Impulse:	8.3 seconds 1.2 seconds 77 meters 224 grams KN/sucrose 5/16 inch 5.8 kg 257 N-sec

Events:
2.1 seconds, Ignition switch clicks (from audio)
3.0 seconds, Thrust begins (from video, first smoke)
4.2 seconds, burnout  (from video, smoke ends)
11.4 seconds, vehicle hits ground  (from video)

Note that the launcher is about 289 feet from the camera, thus there is a delay of about 0.25 second between the visual event and its sound.  Thus the ignitor delay is about 1/4 second less than the .wav file would suggest.

Kn profile for this engine:

Burn rate is in inches per second.  Note that the slightly-too-long Bates grain skew the thrust curve toward the progressive, just like Jerry Irvine said!

JY
3/24/02
rev 3/30/02