A variable speed pumping system 200, for an aircraft 50, comprising: a first electrical machine 116, the first electrical machine 116 comprising an electrical machine rotor shaft 202 mechanically connected to an engine 10 of the aircraft and electrical mac...

Auxiliary power units and methods and systems for activation and deactivation of a load compressor therein are provided. Auxiliary power unit includes the load compressor (14) having an impeller (28), APU engine, coupling member (35), pre-spinning means (B...

A reciprocating compressor system is provided comprising: a turbine (115); a reciprocating compressor (103) driven by said turbine; and a gearbox (119) arranged between the turbine and said reciprocating compressor. The turbine is provided with a barring d...

A cooling medium supply apparatus 10 has a sensing means 120 and a cooling medium pump mechanism 100 which is powered by a gas turbine engine assembly 140. The gas turbine engine assembly 140 is self-contained with a fuel supply 150, an ignition system 170...

A gas turbine engine (20) includes a windmill pump (132) driven by a spool (30).

A gas turbine engine (10) includes a spool, a gearbox (54) having gearing driven by the spool, and a lubrication system (12). The lubrication system includes a first heat exchanger (32) positioned in a first air flow path (40), a second heat exchanger (34)...

Either one of an inner rotor (16) and an outer rotor (18) of a motor-generator (12) is coupled to an expander (48) of a Rankine circuit (40), and the other rotor is coupled to a rotary shaft (7) of an internal combustion engine (2) .

Certain embodiments of the invention may include systems and methods for controlling an integrated drive train. According to an example embodiment of the invention, a method for controlling a gas turbine drive train (100) includes measuring speed (311) ass...

The drive system includes an air turbine comprising a casing and rotary mechanism. The turbine can be supplied with a flow of air from a compressor (12) in the turbo engine (10) so that it can be used to drive the pump (13).