# US 10,309,247 B2 · Hybrid ram air turbine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,247 B2 - Document ID: US10309247B2 - Status: Granted - Kind: B2 - Application number: 14/549,651 - Filed: 2014-11-21 - Published: 2016-05-26 - Granted: 2019-06-04 - Earliest claimed: 2014-11-21 - Assignees: Hamilton Sundstrand Corporation - Applicants: Hamilton Sundstrand Corporation - Inventors: Michael Larson; David Chapman - Web page: https://patentgrep.com/patent/US10309247B2 ## CPC - F01D 15/08: Adaptations for driving, or combinations with, pumps - B64D 41/007: {Ram air turbines} - F02C 7/32: Arrangement, mounting, or driving, of auxiliaries - F02C 7/36: Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user ({F02C3/107 - F02C3/13 and} F02C7/32 take precedence; couplings for transmitting rotation F16D; gearing in general F16H) - F03D 9/00: Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations (hybrid wind-photovoltaic energy systems for the generation of electric power H02S10/12) - F03D 9/32: on moving objects, e.g. vehicles - F05D 2220/34: in ram-air turbines ("RATS") - Y02B 10/30: Wind power - Y02E 10/72: Wind turbines with rotation axis in wind direction - Y02E 10/728: Onshore wind turbines - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT - F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00) - F03D: WIND MOTORS - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A ram air turbine is provided that utilizes a hybrid design. The ram air turbine includes a hydraulic power conversion device directly coupled to a turbine shaft and an electric power conversion device coupled to a drive shaft. A gearbox is used to couple the turbine shaft to the drive shaft. ## Claims ### Claim 1 A ram air turbine, comprising: a blade removably coupled to a turbine shaft; a gearbox removably coupled to both the turbine shaft and a drive shaft; an electrical power conversion device coupled to the drive shaft via the gearbox; a hydraulic power conversion device directly in contact with the turbine shaft, wherein the hydraulic power conversion device comprises a hydraulic pump; and an inlet hose and a discharge hose coupled to the hydraulic pump, wherein the inlet hose and the discharge hose are also coupled to a swivel post. ### Claim 2 (depends on 1) The ram air turbine of claim 1, wherein the electrical power conversion device comprises a generator. ### Claim 3 (depends on 1) The ram air turbine of claim 1, wherein the gearbox is configured to increase a turbine rotational velocity to a higher speed drive shaft rotational velocity. ### Claim 4 (depends on 1) The ram air turbine of claim 1, wherein the gearbox is configured to reduce a turbine rotational velocity to a lower speed drive shaft rotational velocity. ### Claim 5 (depends on 1) The ram air turbine of claim 1, wherein the gearbox comprises a gear coupled to the turbine shaft and a bevel gear coupled to the drive shaft, wherein the bevel gear engages with the gear to transmit rotation of the turbine shaft to the drive shaft, wherein the gear surrounds the turbine shaft and the bevel gear surrounds the drive shaft. ### Claim 6 (depends on 1) The ram air turbine of claim 1, wherein the rotation of the turbine shaft is directly translated to the hydraulic power conversion device. ### Claim 7 (depends on 1) The ram air turbine of claim 1, wherein the turbine shaft rotates at a 1:1 ratio with the hydraulic power conversion device. ### Claim 8 (depends on 1) The ram air turbine of claim 1, wherein the swivel post is mounted on the hydraulic power conversion device. ### Claim 9 A ram air turbine, comprising: a blade removably coupled to a turbine shaft; a hydraulic pump in direct contact with the turbine shaft; an electrical generator coupled to a drive shaft via a gearbox; and an inlet hose and a discharge hose, wherein the inlet hose and the discharge hose are coupled to a swivel post. ### Claim 10 (depends on 9) The ram air turbine of claim 9, wherein the gearbox is removably coupled to the turbine shaft and the drive shaft. ### Claim 11 (depends on 10) The ram air turbine of claim 10, wherein the gearbox comprises a gear coupled to the turbine shaft and a bevel gear coupled to the drive shaft, wherein the bevel gear engages with the gear to transmit rotation of the turbine shaft to the drive shaft, wherein the gear surrounds the turbine shaft and the bevel gear surrounds the drive shaft. ### Claim 12 (depends on 5) The ram air turbine of claim 5, wherein the gearbox is configured to increase a turbine rotational velocity to a higher speed drive shaft rotational velocity. ### Claim 13 (depends on 5) The ram air turbine of claim 5, wherein the gearbox is configured to reduce a turbine rotational velocity to a lower speed drive shaft rotational velocity.