US3726604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooled jet flap vane
Assignee: Motors Liquidation Co
•
Filing: 1971-10-13
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Granted: 1973-04-10
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Expires: 1991-10-13
Abstract
Abstract A high temperature gas turbine diverts air compressed by the compressor of the engine for cooling the turbine nozzle vanes. These vanes have laminated walls with passages through the walls for cooling the vane walls. The vanes also have slots adjacent the trailing edge for blowing air toward adjacent vanes to provide a jet flap effect and thus reduce the effective area of the nozzle. The air diverted from the compressor is controlled so as to direct all the air for cooling at maximum engine rating and to use some of the air for jet flap purposes and correspondingly reduce the cooling air at lower power operation of the engine.
Inventors
- 👤 H Helms
- 👤 R Sccwedland
- 👤 F Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:35
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/182; F01D5/184; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10S; Y10S415/00; Y10S415/914
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
117 words
A fluid-directing cascade for reaction with a hightemperature gas comprising, in combination, first and second shroud means bounding the flow path through the cascade and a plural number of airfoils extending from oNe shroud means to the other and defining gas paths between the airfoils; each airfoil being hollow and defining slot means adjacent its trailing edge for blowing air toward the adjacent airfoil for modulating gas flow through the gas paths; each airfoil including means for aircooling the airfoil and an inlet for cooling air; each airfoil also including an inlet for gas flow modulating air and conduit means for conducting the modulating air to the said slot means and isolating it from the cooling air.
Claim 2
Dependent Claim
117 words
A fluid-directing cascade for reaction with a hightemperature gas comprising, in combination, first and second shroud means bounding the flow path through the cascade and a plural number of airfoils extending from oNe shroud means to the other and defining gas paths between the airfoils; each airfoil being hollow and defining slot means adjacent its trailing edge for blowing air toward the adjacent airfoil for modulating gas flow through the gas paths; each airfoil including means for aircooling the airfoil and an inlet for cooling air; each airfoil also including an inlet for gas flow modulating air and conduit means for conducting the modulating air to the said slot means and isolating it from the cooling air.
Claim 3
Dependent Claim
127 words
A fluid-directing cascade for reaction with a high-temperature gas comprising, in combination, first and second shroud means bounding the flow path through the cascade and a plural number of airfoils extending from one shroud means to the other and defining gas paths between the airfoils; each airfoil being hollow and defining slot means adjacent its trailing edge for blowing air toward the adjacent airfoil for modulating gas flow through the gas paths; each airfoil including means for air-cooling the airfoil and an inlet for cooling air at the first shroud means; each airfoil also including an inlet for gas flow modulating air at the second shroud means and conduit means for conducting the modulating air to the said slot means and isolating it from the cooling air.
Claim 4
Dependent Claim
127 words
A fluid-directing cascade for reaction with a high-temperature gas comprising, in combination, first and second shroud means bounding the flow path through the cascade and a plural number of airfoils extending from one shroud means to the other and defining gas paths between the airfoils; each airfoil being hollow and defining slot means adjacent its trailing edge for blowing air toward the adjacent airfoil for modulating gas flow through the gas paths; each airfoil including means for air-cooling the airfoil and an inlet for cooling air at the first shroud means; each airfoil also including an inlet for gas flow modulating air at the second shroud means and conduit means for conducting the modulating air to the said slot means and isolating it from the cooling air.
Claim 5
Dependent Claim
137 words
A fluid-directing cascade for reaction with a high-temperature gas comprising, in combination, first and second shroud means bounding the flow path through the cascade and a plural number of airfoils extending from one shroud means to the other and defining gas paths between the airfoils; each airfoil being hollow and defining slot means adjacent its trailing edge for blowing air toward the adjacent airfoil for modulating gas flow through the gas paths; each airfoil including means for air-cooling the airfoil and an inlet for cooling air; each airfoil also including an inlet for gas flow modulating air and conduit means for conducting the modulating air to the said slot means and isolating it from the cooling air; means for supplying air from a source; and means for variably dividing the said air between the two said inlets.
Claim 6
Dependent Claim
137 words
A fluid-directing cascade for reaction with a high-temperature gas comprising, in combination, first and second shroud means bounding the flow path through the cascade and a plural number of airfoils extending from one shroud means to the other and defining gas paths between the airfoils; each airfoil being hollow and defining slot means adjacent its trailing edge for blowing air toward the adjacent airfoil for modulating gas flow through the gas paths; each airfoil including means for air-cooling the airfoil and an inlet for cooling air; each airfoil also including an inlet for gas flow modulating air and conduit means for conducting the modulating air to the said slot means and isolating it from the cooling air; means for supplying air from a source; and means for variably dividing the said air between the two said inlets.
Claim 7
Dependent Claim
88 words
A high-temperature turbine including an annular nozzle for directing motive fluid, the nozzle including first and second shrouds and a cascade of nozzle vanes extending from one shroud to the other; each vane including fluid jetting means for modulating flow through the nozzle and including fluid cooling means for the vane; each vane having a blowing fluid inlet and a cooling fluid inlet; a source of fluid under pressure; and means for variably apportioning the fluid from the said source between the blowing fluid and cooling fluid inlets.
Claim 8
Dependent Claim
88 words
A high-temperature turbine including an annular nozzle for directing motive fluid, the nozzle including first and second shrouds and a cascade of nozzle vanes extending from one shroud to the other; each vane including fluid jetting means for modulating flow through the nozzle and including fluid cooling means for the vane; each vane having a blowing fluid inlet and a cooling fluid inlet; a source of fluid under pressure; and means for variably apportioning the fluid from the said source between the blowing fluid and cooling fluid inlets.
Claim 9
Dependent Claim
87 words
A high-temperature turbine including an annular nozzle for directing motive fluid, the nozzle including first and second shrouds and a cascade of nozzle vanes extending from one shroud to the other; each vane including air blowing means for modulating flow through the nozzle and including air cooling means for the vane; each vane having a blowing air inlet and a cooling air inlet; a source of air under pressure; and means for variably apportioning air from the said source between the blowing air and cooling air inlets.
Claim 10
Dependent Claim
87 words
A high-temperature turbine including an annular nozzle for directing motive fluid, the nozzle including first and second shrouds and a cascade of nozzle vanes extending from one shroud to the other; each vane including air blowing means for modulating flow through the nozzle and including air cooling means for the vane; each vane having a blowing air inlet and a cooling air inlet; a source of air under pressure; and means for variably apportioning air from the said source between the blowing air and cooling air inlets.
Claim 11
Dependent Claim
102 words
A high-temperature turbine including an annular nozzle for directing motive fluid, the nozzle including first and second shrouds and a cascade of nozzle vanes extending from one shroud to the other; each vane including air blowing means for modulating flow through the nozzle and including air cooling means for the vane; each vane having a blowing air inlet at one end of the vane span and a cooling air inlet at the other end of the vane span; a source of air under pressure; and means for variably apportioning air from the said source between the blowing air and cooling air inlets.
Claim 12
Dependent Claim
102 words
A high-temperature turbine including an annular nozzle for directing motive fluid, the nozzle including first and second shrouds and a cascade of nozzle vanes extending from one shroud to the other; each vane including air blowing means for modulating flow through the nozzle and including air cooling means for the vane; each vane having a blowing air inlet at one end of the vane span and a cooling air inlet at the other end of the vane span; a source of air under pressure; and means for variably apportioning air from the said source between the blowing air and cooling air inlets.
Claim 13
Dependent Claim
120 words
A fluid-reacting airfoil for a high-temperature turbomachine comprising, in combination, a laminated formed sheet metal wall defining the exterior contours of the airfoil and defining passages for a cooling fluid through the wall, the interiOr of the wall defining a plenum for distributing a cooling fluid to the said passages and defining a first inlet into the said plenum for the cooling fluid; the wall defining slot means extending spanwise of the blade for emission of fluid for generation of a jet flap extending from the airfoil; and conduit means within the airfoil for conducting jet flap defining fluid to the slot means including a second inlet, the conduit means isolating the cooling fluid from the jet flap defining fluid.
Claim 14
Dependent Claim
120 words
A fluid-reacting airfoil for a high-temperature turbomachine comprising, in combination, a laminated formed sheet metal wall defining the exterior contours of the airfoil and defining passages for a cooling fluid through the wall, the interiOr of the wall defining a plenum for distributing a cooling fluid to the said passages and defining a first inlet into the said plenum for the cooling fluid; the wall defining slot means extending spanwise of the blade for emission of fluid for generation of a jet flap extending from the airfoil; and conduit means within the airfoil for conducting jet flap defining fluid to the slot means including a second inlet, the conduit means isolating the cooling fluid from the jet flap defining fluid.
Claim 15
Dependent Claim
140 words
A fluid-reacting airfoil for a high-temperature turbomachine comprising, in combination, a laminated formed sheet metal wall defining the exterior contours of the airfoil and defining passages for a cooling fluid through the wall and means defining shroud segments at the ends of the airfoil; the interior of the blade defining a plenum for distributing a cooling fluid to the said passages and defining a first inlet at one shroud segment into the said plenum for the cooling fluid; the wall defining slot means extending spanwise of the blade for emission of fluid for generation of a jet flap extending from the airfoil; and conduit means within the airfoil for conducting jet flap defining fluid to the slot means including a second inlet at the other shroud segment, the conduit means isolating the cooling fluid from the jet flap defining fluid.
Claim 16
Dependent Claim
140 words
A fluid-reacting airfoil for a high-temperature turbomachine comprising, in combination, a laminated formed sheet metal wall defining the exterior contours of the airfoil and defining passages for a cooling fluid through the wall and means defining shroud segments at the ends of the airfoil; the interior of the blade defining a plenum for distributing a cooling fluid to the said passages and defining a first inlet at one shroud segment into the said plenum for the cooling fluid; the wall defining slot means extending spanwise of the blade for emission of fluid for generation of a jet flap extending from the airfoil; and conduit means within the airfoil for conducting jet flap defining fluid to the slot means including a second inlet at the other shroud segment, the conduit means isolating the cooling fluid from the jet flap defining fluid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |