F-35 engine starter tested.
Lockheed Martin For the former company, see .
Lockheed Martin (NYSE: LMT) is a leading multinational aerospace manufacturer and advanced technology company formed in 1995 by the merger of Lockheed Corporation with Martin Marietta. and Pratt & Whitney have completed the first start-up of an F-35 aircraft test engine using an integrated power package and engine-mounted starter/generator. The starter package is an IPP--Integrated Power Package--which combines the functions of an auxiliary power system, an emergency power system and an environmental control unit. A small gas-turbine engine (turbomachine) provides power to the starter and brings the engine up to its threshold starting speed, at which time the engine increases to idle speed Idle speed is the minimum operating speed (generally measured in revolutions per minute, or rpm, of the crankshaft) of a combustion engine. At idle speed, the engine generates enough power to run reasonably smoothly and operate its ancillaries (water pump, alternator, and, if and the electrical system transitions from operating as a motor to being a generator. The IPR IPR Intellectual Property Rights
IPR Inprocess/Inprogress Review
IPR Industrial Property Rights
IPR Institute for Policy Research (Northwestern University and University of Cincinnati)
IPR Institute of Public Relations a subsystem A unit or device that is part of a larger system. For example, a disk subsystem is a part of a computer system. A bus is a part of the computer. A subsystem usually refers to hardware, but it may be used to describe software. of the F-35's Power and Thermal Management System, also seconds as an in-flight emergency power generator.