Video Caption: WARNING: I was told it’s loud so turn down the volume. Two state rocket more tests at the FAR site on January 5, 2019. First test was a 100 mm seven grain 7615 N-sec KNSB motor with a new lightweight forward bulkhead welded into the motor case with a new titanium nozzle machined by Sugar Shot to Space member Chris Coveny.
The motor failed when the bulkhead gave way resulting in the motor thrusting down into the concrete test stand foundation. That caused the nozzle to be forced up into the aluminum motor case that mushroomed as a result of the impact.
The nozzle was cut from the motor case and used a second time in a six grain 6,900 N-second previously launched flight motor with conventional bolted in bulkhead. This second successful test showed no erosion of the nozzle throat. The nozzle was also cool to the touch soon after firing, something not possible with a steel or graphite nozzle.
Sugar Shot 2 Space (SS2S) are working towards a space shot of an entirely sugar propellant fueled rocket.
Video Caption: Small scale 2-stage Sugar Shot flight for testing our avionics and recovery. Booster performed well and recovered with no damage. The second stage failed to ignite (problem was found and will be corrected. Second stage recovery also successful with no damage. 150 mm ‘O’ impulse motor was successfully launched last June.
75mm second stage was successfully flown several times both as a single stage and as the second stage on a 100 mm booster.
Bugger sums this up!
Video Caption: 150 mm KNSU sucrose rocket motor launch. Motor failed at the bulkhead resulting in a CATO. Friends of Amateur Rocketry test facility, Mojave Desert.
Video Caption: The second static test of an 89mm ‘M’ impulse KNSB sugar motor at the FAR site in the Mojave Desert of California for the Sugar Shot to Space project. (Friends of Amateur Rocketry dot org and on facebook)