Boston University Rocket Propulsion Group's 200 lb thrust Mk IIB in hot fire testing. The 5th hot fire of the Mk IIB test platform, this was the first to run nitrous injection thrust vector control. The Mk IIB is a small and easily modified hybrid rocket engine (hence all of the wires) that has 36 different sensors to measure every performance parameter. This test was running small amplitude sweeps in two axes, the next test will run large amplitude sweeps. Nitrous Oxide is injected into the diverging bell of the nozzle to create supersonic shocks that deflect the thrust to steer the rocket as it flies. This system has tremendous advantages for a hybrid because the system is much smaller, faster, and has higher performance compared to other thrust vector control systems for a hybrid. Check out our website for more information at www.burocket.org