With an Isp of 175 sec with a density Isp of 1.5, it creates a rocket motor 1/2 the size of a normal solid propellant motor. Although low in Isp, this combination has a very high density Isp making it possible to reduce the size of a known total impuilse by ½. Not only is the Zn/S a combination well known in Experimental Rocketry but the combustion product is both very hot and is a fuel, ZnS vapor. This does an additioinal “burn” with the Ap in the oxidizing section.

Extremely safe assembly. No pressurant, no valves. Easy startup just ignite the Zn/S section.