Patent ID: 6983587

Claim:
A rocket suitable for use in the presence of air, said rocket comprising: (a) a secondary air flow containment casing having an inlet and an outlet; (b) a rocket motor adapted to burn a fuel and an oxidant to produce a hot exhaust primary gas flow, said rocket motor having (i) a nozzle interior throat portion, said nozzle interior throat portion located upstream of, and peripheral to, said outlet of said secondary air flow containment casing outlet, and (ii), a nozzle exterior throat portion, said nozzle exterior throat portion positioned upstream of, and peripheral to, said outlet of said secondary airflow containment casing, wherein (iii) said nozzle exterior throat portion and said nozzle interior throat portion are adapted to discharge therebetween said hot exhaust primary gas flow from said rocket motor; (c) an outlet nozzle, said outlet nozzle having a preselected contour, said outlet nozzle extending for a preselected distance downstream from said nozzle exterior throat portion; (d) so that said hot exhaust primary gas flow induces said secondary air flow through said secondary air flow containment casing, thereby causing said secondary air flow from said secondary air flow containment casing to mix with said hot exhaust primary gas flow so as increase total momentum of gases exiting said rocket.