Air turbine starter with fluid flow control
First Claim
Patent Images
1. A gas turbine engine combination comprising:
- an air turbine starter including a cover plate and at least one passageway through the cover plate;
a gas turbine engine;
a gearbox adjacent the cover plate and between the air turbine starter and the gas turbine engine; and
a normally open valve in the at least one passageway through the cover plate.
4 Assignments
0 Petitions
Accused Products
Abstract
An improved air turbine starter that includes fluid flow control devices. The devices may be check valves, for example normally open check valves. The check valves may be located in fluid flow paths between the starter and the gearbox to which it is mounted. The starter may also include a ring seal about the output shaft to restrict fluid flow over the shaft.
95 Citations
36 Claims
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1. A gas turbine engine combination comprising:
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an air turbine starter including a cover plate and at least one passageway through the cover plate;
a gas turbine engine;
a gearbox adjacent the cover plate and between the air turbine starter and the gas turbine engine; and
a normally open valve in the at least one passageway through the cover plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An air turbine starter comprising:
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an air turbine starter housing;
an output shaft extending from the air turbine starter housing;
a wall adjacent the turbine output shaft; and
a pressure valve in at least one of the air turbine starter housing and the wall wherein the valve is normally open under normal operating conditions for the turbine housing. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A kit for configuring an air turbine starter to have a valve, the kit comprising:
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a cover plate for mounting on an air turbine starter between the air turbine starter and a gearbox, the cover plate having a wall defining an opening for receiving a valve, the cover plate further including an engagement surface; and
a normally open valve including a valve housing for engaging the opening in the cover plate and further including a complementary engagement surface for engaging the engagement surface on the cover plate so that the valve when installed on the cover plate is normally open during normal operation of an air turbine starter mounted on a gearbox. - View Dependent Claims (29, 30, 31)
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32. A method of operating an air turbine starter, the method comprising the steps of:
- operating an air turbine starter;
allowing air transfer between the air turbine starter and a gearbox;keeping a fluid valve in the air turbine housing open under normal operating pressures inside an air turbine housing; and
closing the fluid valve when the air pressure in the housing decreases below a defined pressure. - View Dependent Claims (33, 34, 35)
- operating an air turbine starter;
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36. An air turbine starter comprising an air turbine starter housing having a wall defining a first opening allowing oil to pass through the opening, an output shaft extending from the housing, a cover plate adjacent the output shaft and including a wall in the cover plate defining a second opening, a first normally open valve in the first opening, a second normally open valve in the second opening and wherein the first and second normally open valves are configured to be actuated by a pressure change across the valve.
Specification