Regenerative turbine blade and vane cooling for a tip...
Reheat systems for gas turbine engines
Reloadable/modular solid propellant rocket motor
Reloadable/modular solid propellant rocket motor
Removable afterburner flameholder
Removable baffle infrared suppressor
Removable rocket motor igniter
Reorienting grain direction of calendered insulation sheet stock
Replaceable afterburner heat shield
Resistojet
Reverse bulged forward acting scored rupture disc bulkhead struc
Reverse flow aft inlet ramjet system
Reverse pitch fan with divided splitter
Reverser inner cowl with integral bifurcation walls and core cow
Ring-cusp ion thruster with shell anode
Rocket augmentation for combined cycle turboaccelerator jet...
Rocket chamber heat exchanger
Rocket chamber heat exchanger
Rocket combustion chamber coating
Rocket combustion chamber cooling wall of composite cooling type