Power plants – Combustion products used as motive fluid – Multiple fluid-operated motors
Patent
1990-09-24
1993-04-13
Bertsch, Richard A.
Power plants
Combustion products used as motive fluid
Multiple fluid-operated motors
60 3921, 74665E, 74DIG5, F02C 106
Patent
active
052017982
ABSTRACT:
A multifunction integrated power unit (MIPU) (10) for use aboard aircraft provides the functions both of an auxiliary power unit and of an emergency power unit while being smaller, lighter, and less expensive than the two units it replaces. Additionally, the integration of both functions in a single unit allows elimination of duplicated service devices and a further reduction in size, cost, and weight in the aircraft itself. The MIPU (10) includes two turbine engines (12, 22) operable under differing conditions, an integrating gear box (34) receiving power from the two engines (12, 22) selectively, and a plurality of accessory devices (36, 38) receiving shaft power from either of the two engines (12, 22) via the gear box (34). The gear box (34) includes a power transfer unit (PTU) apparatus (108) which selectively delivers shaft power from one of the engines (12, 22) to the accessory devices (36, 38).
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Allied-Signal Inc.
Bertsch Richard A.
Freay Charles G.
Holden Jerry J.
Miller Terry
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