This disclosure relates to apparatuses, systems, and methods for controlling an aircraft. A computing system may identify a first command signal received via a flight control at a time point to control navigation of the aircraft through an environment. The...

A gas turbine jet noise reduction apparatus including a variable geometry gas turbine engine nozzle comprising a circumferentially distributed array of nozzle flap panels supported for alternate collective splaying and gathering motion, with the collective...

Jet noise is reduced by weakening Mach cones (16) in a jet exhaust gas streamtube (14) by modifying exhaust gas flow in a longitudinal axial core (13) of the exhaust gas streamtube (14). This may be achieved by deploying a transpiration element (24), such ...

An air intake system suitable for a supersonic vehicle is disclosed. The system includes a channel comprising an inlet and a side wall and a plenum coupled to the side wall. The plenum is configured to accept a flow of coolant. In certain embodiments, the ...

An exhaust impingement cooling device for reducing heating effects of an exhaust plume on an impinged surface. An exhaust nozzle exit screen is positioned across an exhaust plume flow path, and includes a plurality of flowpath diverging apertures that spre...

To delay, reduce or prevent laminar and/or turbulent boundary layer separation a plurality of spaced-apart vortex generators (10a, 10b) have a plasma actuator (22) distributed amongst them. The plasma actuator (22) includes a first electrode (24) carried b...

A heat exchanger (107) is configured to receive an elevated-temperature process fluid and an isomerization compound (109) capable of endothermic isomerization. When the system is in operation, heat from the elevated temperature process fluid is transferred...

An apparatus and method for control of attractive magnetic levitation comprising operating an inertial measurement unit and employing output of the inertial measurement unit as a primary feedback of a control loop.

An actuator for applying an actuating force through a total displacement. The actuator includes: an actuator body; n piezo members supported by the body where n is an integer greater than or equal to two, each of the piezo members generating a force and a ...