Patent US3575127A successfully refreshed from Google Patents.
US3575127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle propulsion system
Assignee: United States Department of the Navy
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Filing: 1969-05-19
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Granted: 1971-04-13
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Expires: 1989-05-19
Abstract
Abstract A propulsion system for fluid-submerged bodies, such as torpedoes or submarines, including a mixed flow impeller for increasing the energy of and for introducing radial and transverse direction components into a fluid flow directed therethrough and a pump casing connected by flow inlet vanes to the aft end of the submerged body which includes ducting terminating in exhaust openings having rotatable jet stream deflection cylinders for exhausting at least a major portion of the impeller exhaust to propel and steer the submerged body, and which may include ducting terminating in arcuately extending exhaust slots arranged between adjacent jet stream exhaust openings for exhausting a substantial portion of the flow to inhibit flow separation at the aft end of the pump casing.
Inventors
- 👤 George F Wislicenus
- 👤 Maurice M Sevik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:30
CPC Classifications
F; F42; F42B; F42B19/00; F42B19/12; F42B19/28; B; B63; B63G; B63G8/00; B63G8/08; B63G8/14; B63H; B63H11/00; B63H11/02; B63H11/10; F42B19/01; B63H11/04; B63H11/08; B63H2011/081
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
389 words
A propulsion system for a vehicle, comprising: flow channelling means extending from fluid influx areas arranged adjacent the lateral periphery of the vehicle; mixed-flow-impeller means connected to the vehicle for driven rotation about an axis including an annular hub portion arranged to receive flow from said flow-channelling means and having a concavely curved exterior surface for diverting a flow generally radially of said impeller means, a plurality of blades extending from and being connected to said hub portion and being curved for exhausting a flow of increased energy generally transversely of said impeller axis, and an annular suction shroud having a convexly curved interior surface connected to said blades, said convex surface of said suction shroud coacting with said concave surface of said hub portion enabling a radial and axial flow through said impeller means; said flow-channelling means comprising a first flow channel boundary surface carried by an impeller-confronting portion of the vehicle comprising a body of revolution about said impeller axis generated by a first curve having a convex portion adjacent said influx areas and extending through a concave portion adjacent said impeller means, the extension of said first boundary surface conforming to said concave surface of said hub portion, a propulsion pump casing connected to the vehicle about said impeller means having a second flow channel boundary surface confronting said first boundary surface comprising a body of revolution about said impeller axis generated by a second curve having a concave portion adjacent said influx areas and extending in diverging relation to said first curve through a convex portion adjacent said impeller means, the extension of said second boundary surface conforming to said convex surface of said suction shroud; an impeller drive shaft connected to the vehicle for driven rotation and having said hub portion connected thereto, said shaft having a concavely curved annular surface positioned intermediate said hub portion and said first boundary surface conforming to the adjacent portion of the extension of said concave portion of said first boundary surface along said concave surface of said hub portion, said suction shroud being positioned in spaced, encircling relation to said annular surface of said shaft; and ducting means formed in said pump casing arranged to receive said increased energy flow exhausted from said impeller means and configured for diverting and exhausting said flow to propel the vehicle.
Claim 2
Dependent Claim
389 words
A propulsion system for a vehicle, comprising: flow channelling means extending from fluid influx areas arranged adjacent the lateral periphery of the vehicle; mixed-flow-impeller means connected to the vehicle for driven rotation about an axis including an annular hub portion arranged to receive flow from said flow-channelling means and having a concavely curved exterior surface for diverting a flow generally radially of said impeller means, a plurality of blades extending from and being connected to said hub portion and being curved for exhausting a flow of increased energy generally transversely of said impeller axis, and an annular suction shroud having a convexly curved interior surface connected to said blades, said convex surface of said suction shroud coacting with said concave surface of said hub portion enabling a radial and axial flow through said impeller means; said flow-channelling means comprising a first flow channel boundary surface carried by an impeller-confronting portion of the vehicle comprising a body of revolution about said impeller axis generated by a first curve having a convex portion adjacent said influx areas and extending through a concave portion adjacent said impeller means, the extension of said first boundary surface conforming to said concave surface of said hub portion, a propulsion pump casing connected to the vehicle about said impeller means having a second flow channel boundary surface confronting said first boundary surface comprising a body of revolution about said impeller axis generated by a second curve having a concave portion adjacent said influx areas and extending in diverging relation to said first curve through a convex portion adjacent said impeller means, the extension of said second boundary surface conforming to said convex surface of said suction shroud; an impeller drive shaft connected to the vehicle for driven rotation and having said hub portion connected thereto, said shaft having a concavely curved annular surface positioned intermediate said hub portion and said first boundary surface conforming to the adjacent portion of the extension of said concave portion of said first boundary surface along said concave surface of said hub portion, said suction shroud being positioned in spaced, encircling relation to said annular surface of said shaft; and ducting means formed in said pump casing arranged to receive said increased energy flow exhausted from said impeller means and configured for diverting and exhausting said flow to propel the vehicle.
Claim 3
Dependent Claim
40 words
A system according to claim 1 wherein said ducting further comprises: a plurality of ducts communicating with said impeller means and terminating in a plurality of exhaust openings circularly arranged in spaced relation about an extension of said impeller axis.
Claim 4
Dependent Claim
37 words
A system according to claim 2 further comprising: a plurality of inflow vanes connected between said first and second boundary surfaces adjacent said influx area for reducing inflow turbulence and interconnecting said pump casing to the vehicle.
Claim 5
Dependent Claim
58 words
A system according to claim 3 further comprising: said drive shaft having an end extending through said hub portion of said impeller means: and said pump casing including a bulk head having an annular bearing and positioned on the exhaust side of said impeller means, said extended end of said shaft being journaled for rotation in said bearing.
Claim 6
Dependent Claim
61 words
A system according to claim 4 further comprising: a first annular wearing surface formed on the external periphery of said suction shroud; a second annular wearing surface extending toward said bulkhead from said hub portion; and first and second wearing surfaces surrounded by stationary wearing rings in confronting relation to said first and said second wearing surfaces for impeding flow feedback.
Claim 7
Dependent Claim
35 words
A system according to claim 5 wherein said ducting means further comprises: another plurality of ducts communicating with said impeller means and terminating in arcuately extending slots interspersed between adjacent ones of said exhaust openings.
Claim 8
Dependent Claim
159 words
A propulsion system for a vehicle comprising: flow channeling means extending from fluid influx areas arranged adjacent the lateral periphery of the vehicle; mixed flow-impeller means connected to the vehicle for driven rotation about an axis and configured to divert a fluid flow received from said flow-channelling means and to exhaust a flow of increased energy generally radially and transversely of said axis; a first plurality of ducts arranged to receive said increased energy flow exhausted from said impeller means and configured for diverting said flow terminating in primary exhaust openings for directing a flow to propel the vehicle and being circularly arranged in spaced relation about an extension of said impeller axis; and a second plurality of ducts arranged to receive said increased energy flow and configured for diversion thereof terminating in arcuately extending slots interspersed between adjacent ones of said primary exhaust openings for directing a flow to prevent separation at the aft end of the vehicle.
Claim 9
Dependent Claim
159 words
A propulsion system for a vehicle comprising: flow channeling means extending from fluid influx areas arranged adjacent the lateral periphery of the vehicle; mixed flow-impeller means connected to the vehicle for driven rotation about an axis and configured to divert a fluid flow received from said flow-channelling means and to exhaust a flow of increased energy generally radially and transversely of said axis; a first plurality of ducts arranged to receive said increased energy flow exhausted from said impeller means and configured for diverting said flow terminating in primary exhaust openings for directing a flow to propel the vehicle and being circularly arranged in spaced relation about an extension of said impeller axis; and a second plurality of ducts arranged to receive said increased energy flow and configured for diversion thereof terminating in arcuately extending slots interspersed between adjacent ones of said primary exhaust openings for directing a flow to prevent separation at the aft end of the vehicle.
Claim 10
Dependent Claim
72 words
A system according to claIm 7 further comprising: means connected to said steering cylinders for rotating said cylinders to steer the vehicle. a plurality of jet stream steering cylinders rotatably mounted in said primary exhaust openings on axes extending through said extension of impeller axis and each having a transverse aperture extending therethrough having a rectangular configuration in cross section and converging sides terminating to form a jet stream exhaust outlet; and
Claim 11
Dependent Claim
98 words
A system according to claim 7 wherein said ducts of said first plurality each further comprise: a duct having a bend formed therein intermediate its ends, having an influx end arranged to receive said transversely directed, increased energy flow from said impeller means and terminating in one of said primary exhaust openings; a plurality of curved flow-detecting vanes arranged in spaced relation in said bend of said duct to deflect the oncoming flow from sad impeller means toward said primary exhaust openings; and efflux vane mounted in said duct intermediate said flow-deflecting vanes and said primary exhaust opening.
Claim 12
Dependent Claim
35 words
A system according to claim 9 further comprising: each of said second plurality of ducts communicating with said influx end of a respective one of said ducts of said first plurality adjacent said impeller means.
Claim 13
Dependent Claim
43 words
A system according to claim 10 further comprising: a plurality of turning vanes arranged in spaced relation in each duct of said second plurality for diverting a portion of the impinging increased energy flow from said impeller means to said arcuately extending slots.
Claim 14
Dependent Claim
65 words
A system according to claim 11 further comprising: a boundary wall of each of said ducts in said first plurality positioned adjacent said duct of said second plurality terminating in a curved, flow-diverting vane for diverting a first portion of the oncoming flow from said impeller means to said duct of said first plurality and a second portion to said duct of said second plurality.
Claim 15
Dependent Claim
81 words
A system according to claim 7 further comprising: a pump casing connected to the vehicle and encircling said impeller means; said pump casing including a convex portion longitudinally aligned with an extension of said impeller axis and having a plurality of apertures permitting exhausting of said increased energy flow from said impeller means; and said pump casing including an encircling portion forming with said convex casing portion said first and second pluralities of ducts terminating in said openings and said slots.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |