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WO1987002642A1 - Appareil de deploiement-retraction pour des turbines d'aeronefs - Google Patents

Appareil de deploiement-retraction pour des turbines d'aeronefs Download PDF

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Publication number
WO1987002642A1
WO1987002642A1 PCT/US1986/002310 US8602310W WO8702642A1 WO 1987002642 A1 WO1987002642 A1 WO 1987002642A1 US 8602310 W US8602310 W US 8602310W WO 8702642 A1 WO8702642 A1 WO 8702642A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
piston
extended position
aircraft
actuator means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1986/002310
Other languages
English (en)
Inventor
Mordehy Cohen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sundstrand Corp
Original Assignee
Sundstrand Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sundstrand Corp filed Critical Sundstrand Corp
Publication of WO1987002642A1 publication Critical patent/WO1987002642A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D41/00—Power installations for auxiliary purposes
    • B64D41/007—Ram air turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/40—Weight reduction

Definitions

  • This invention relates to control systems for use on aircraft and, more particularly, to a deployment- retraction apparatus for an air turbine of an aircraft, or the like.
  • Deployment-retraction apparatus are used in control systems on aircraft for moving "wind motors" from' : a stowed inoperable position within the aircraft to an extended operable position externally of the aircraft and in the airstream thereof.
  • the turbine is retractable from the extended position into the stowed position when its operation is no longer required.
  • Such wind motors or turbines are used for driving accessories, such as hydraul ⁇ ic pumps, for example, on the aircraft.
  • the accessory pump may be intended to feed the hydraulic control system with liquid under pressure, particularly in case of failure of a main hydraulic circuit to which liquid under pressure is normally fed by pump means oper ⁇ ated by suitable power and in particular by the engine of the aircraft.
  • An object, therefore, of the invention is to provide- a new and improved deployment-retraction appara ⁇ tus for an air turbine of an aircraft, or the like.
  • Another object of the invention is to provide an ⁇ . apjxaxatus of the character described which can deploy the? a r- turbine without high energy hydraulic or electri ⁇ cal source: means,, by employing a high energy mechanical deployment system.
  • the deployment-retraction apparatus is provided for moving an air turbine of an aircraft from a stowed inoperable position within the aircraft to an extended operable position externally of and in the airstream of the air ⁇ craft, and being retractable from the extended position to the stowed position.
  • the turbine is mounted by means to afford its extendability and retractability.
  • Actuator means is connected to the mounting means.
  • Latch means is provided for holding the actuator means in retracted position, and signal means is provided for releasing the latch means.
  • a high force mechanical compression spring is provided for forcing the actuator means from its re ⁇ tracted- position to an extended position, and means are provided for retracting the actuator means from its ex ⁇ tended! position, against the force of the compression spring, to its retracted position in engagement with the latch means.
  • the signal means include selectively operable solenoid means for actuating a low energy release means operatively associated with the latch means.
  • the latch means comprise mechanical linkage means including the release means.
  • the downlock means comprises a spring loading locking mechan ⁇ ism movable into locking relationship with the actuator means automatically in response to the actuator means reaching its extended position.
  • the deployment- retraction apparatus is effective to deploy the turbine ; to its extended operable position by energization of a low energy solenoid.
  • the remaining energy for releasing the latch mechanism and moving the turbine from its stowed inoperative position to its extended operable position is provided by mechanical means, including the high force mechanical compression spring.
  • the retracting means include means for applying fluid pressure to the actuator means in opposition to the compression spring for moving the actuator means to its retracted position.
  • the fluid pressure is simultaneously applied to the downlock means for releasing the same to allow the actuator means to move to its retracted posi ⁇ tion.
  • Signal means including a selectively operable low energy solenoid, is provided for selectively applying the fluid pressure to the actuator means and the downlock means.
  • FIGURE 1 is a side elevation of the deployment- retraction apparatus of the invention, with an air tur ⁇ bine; shown in full lines in its extended operable posi- i tion, and in phantom in its stowed inoperable position;
  • FIGURE 2 is a longitudinal section through the deployment-retraction apparatus
  • FIGURE 3 is a somewhat schematic section illus ⁇ trating the fluid passages of the apparatus.
  • a deployment-retraction apparatus is generally designated 10 and is designed for use with an air turbine, generally designated 12, of an aircraft, or the like.
  • the aircraft is shown by dashed line 14 and conventionally includes one or more compartment doors through which the air turbine moves between a stowed inop ⁇ exative position (shown in phantom) within the air ⁇ craft and an extended operable position externally of and in the airstream of the aircraft, as shown in full lines.
  • Mounting means 16 is pivoted to the aircraft, as at 18, to afford air turbine 12 its extendability and retracta- bility.
  • Deployment-retraction apparatus 10 includes an actuator 20 in the form of a cylindrical piston, with an extension 22 of a piston rod projecting from one end thereof.- Extension 22 is pivotally connected, as at 24, to mounting means 16 of the air turbine for moving the turbine between its stowed and extended positions.
  • deployment-retraction apparatus 10 includes actuator means which, as stated above, includes cylindrical piston 20 and piston rod extension 22.
  • Piston 20 is reciprocal within an outer cylinder 26, and a piston rod 28 is reciprocally mounted within an internal fluid cylinder 30.
  • a working piston 32 is mounted on the inner end of piston rod 28.
  • a high force mechanical compression spring 34 is provided for biasing the actua ⁇ tor means toward its extended position.
  • the spring is mounted in compression condition between an annular flange 36 projecting radially outwardly from fluid cylinder 30 and an interior shoulder 38 of an end cap 40 of cylin ⁇ drical piston 20.
  • Latch and release means are operably mounted in an interior compartment of a rear housing portion 44 of the apparatus. More particu ⁇ larly, a latch arm 46 is pivotally mounted at 48 and includes a hook portion 50 for latching engagement with a spherical end 52 of a rear extension 54 of piston rod 28. A spring 55 biases latch arm 46 and hook portion 50 in a counterclockwise or latching direction. In the position shown in Figure 2, hook portion 50 is in latching or locking engagement with spherical end 52 of the piston rod. A link arm 56 is pivotally mounted within the hous ⁇ ing at 58.
  • the link arm is biased in a clockwise direc ⁇ tion by spring means 59 and carries a rear roller bearing 56a and a forward roller bearing 56b.
  • Latch arm 46 is prevented from rotation in a clockwise direction by rear roller bearing 56a, and front roller bearing 56b engages the underside of a lever arm 60.
  • the lever arm is pivotal ⁇ ly mounted at 62 and is biased in a clockwise direction by spring means 64.
  • the upper end of the lever arm is biased against a rotatable, slotted pin 66.
  • the slotted pin is rotatable by a selectively operable, low energy solenoid means 68.
  • latch and release means 42 As stated above, in the position of Figure 2 spherical end 52 of piston rod 28 is latched behind hook portion 50 of latch arm 46. This maintains the actuator and, therefore, the air turbine in its stowed inoperative position. Deployment is initiated by an electrical signal to low energy solenoid means 68 which rotates pin 66. The pin rotates until lever arm 60 encoun ⁇ ters a slot cut into the pin. Two torsion springs 64 rotate lever arm 60 in a clockwise direction as the lever arm contacts front roller bearing 56b of link arm 56. Each torsion spring is sized to handle the required load individully to provide a safety feature.
  • Link arm 56 rotates about pivot 58 in a counterclockwise direction so that rear roller bearing 56a rotates away from and out of engagement with latch arm 46.
  • Spring 55 then rotates the latch arm in a clockwise direction to move hook portion 50 out of engagement with spherical end 52 on extension 54 of piston rod 28.
  • This allows high force mechanical compression spring 34 to pull on hook portion 50 and rotate latch arm 46 to thereby move the hook portion away from spherical rod end 52, releasing the latching mechan ⁇ ism.
  • the compression spring initiates the deployment action, opening the appropriate compartment doors against the aerodynamic loading, and deploying air turbine 12 -7-
  • damping means are included to provide shock absorption and therefore a smooth transition to a fully deployed condition. More particularly, a series of damping orifices 70 are pro ⁇ vided at the forward end of fluid cylinder 30, the ori ⁇ fices decreasing in size in a forward direction. As will be. described in greater detail hereinafter, fluid cylinder 30 is filled with liquid which is forced outwardly through damping orifices 70 for accommodating shock loads on the • actuator means at full actuator stroke.
  • piston 32 At the fully extended position, piston 32 will bottom against the forward end of fluid cylinder 30 and downlock means are provide for holding the actuator means and, therefore, the air turbine in extended position. More particularly, a downlock pin 72 is loaded by a coil spring 74 for biasing radially inwardly. Piston 28 has a reduced diameter portion 76 for receiving downlock pin 72. When the piston bottoms against the front end of cylinder 30, downlock pin 72 will be biased by spring 74 into the reduced diameter portion 76 of piston rod 28 to mechanically hold the piston, the actuator means and the air. turbine all in extended condition.
  • FIG. 3 a somewhat schematic, sectional view illustrates the hydraul ⁇ ic: circuit of the deployment-retraction apparatus.
  • retract solenoid valve 78, low pressure port 80,- and high pressure port 82 are shown at the rear of the illustration.
  • the high and low pressure ports are in communication with high and low pressure sources, respec ⁇ tively, on the aircraft.
  • low pressure port 80 is in communication with fluid cylinder 30 for filling the cylinder with liquid, through passages 86 and 88, shuttle valve 84, passage 90 and damping orifices 70.
  • Retract solenoid 78 upon initiation by an electrical signal, operates a conventional two-position, three-way valve, generally designated 92 which, upon actuation, will port high pressure liquid from the air ⁇ craft system to shuttle valve 84, through passages 94. The associated force will cause the valve to depress the shuttle valve spring thereby moving the shuttle valve itself. This will allow high pressure liquid to contact the underside of downlock pin 72, through passage 96.
  • the use of a shuttle valve precludes the necessity of an extremely large solenoid valve to move the downlock pin and therefore saves weight and electrical power draw.
  • the downlock pin is retracted against spring 74 by the high pressure liquid. Simultaneously, high pressure -9-
  • the actuator means is extremely reliable ,- because the energy required to deploy the air turbine is mechanically stored by high force mechanical compression spring 34.
  • the system does not depend on high pressure hydraulic or high energy electrical systems to operate.
  • the energy required to release the apparatus also is stored in torsion springs and initiation of both deploy ⁇ ment and retraction is effected by electrical * signals to simple, small energy solenoids.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Actuator (AREA)

Abstract

L'appareil de déploiement-rétraction (10) ci-décrit est destiné à un turbo-propulseur (12) d'un aéronef pour déplacer le turbo-propulseur d'une position rétractée de non-fonctionnement à l'intérieur de l'aéronef vers une position déployée de fonctionnement à l'extérieur de l'aéronef et dans le flux d'air de l'aéronef, et est rétractable de la position déployée vers la position rétractée. Un dispositif à piston et cylindre (30, 32) est utilisé pour déployer et rétracter la turbine à air ou turbo-propulseur. Le piston est déplacé vers une position allongée par un ressort de compression mécanique de grande force (34). Le piston est déplacé vers une position rétractée en appliquant une pression d'un fluide (82) en opposition au ressort de compression. Un mécanisme de verrouillage et libération (42) est associé de manière effective au piston pour maintenir ce dernier dans l'état rétracté et libérer le piston lors du déclenchement d'un signal électrique (68). La pression du fluide pour rétracter le piston est appliquée en réponse au déclenchement d'un signal électrique (78). La pression du fluide retire également une goupille de verrouillage (72) qui maintient le piston dans sa position allongée.
PCT/US1986/002310 1985-10-31 1986-10-29 Appareil de deploiement-retraction pour des turbines d'aeronefs Ceased WO1987002642A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US79333285A 1985-10-31 1985-10-31
US793,332 1985-10-31

Publications (1)

Publication Number Publication Date
WO1987002642A1 true WO1987002642A1 (fr) 1987-05-07

Family

ID=25159668

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1986/002310 Ceased WO1987002642A1 (fr) 1985-10-31 1986-10-29 Appareil de deploiement-retraction pour des turbines d'aeronefs

Country Status (4)

Country Link
EP (1) EP0243487A1 (fr)
JP (1) JPS63501210A (fr)
IL (1) IL80189A0 (fr)
WO (1) WO1987002642A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5484120A (en) * 1994-03-11 1996-01-16 Sundstrand Corporation Support strut for ram air driven turbine
GB2479039A (en) * 2010-03-22 2011-09-28 Hamilton Sundstrand Corp Ram air turbine with locking support structure
CN102285456A (zh) * 2010-06-21 2011-12-21 哈米尔顿森德斯特兰德公司 轻重量收存中止机构
CN103010472A (zh) * 2011-09-26 2013-04-03 哈米尔顿森德斯特兰德公司 排出支柱释放机构
CN103466080A (zh) * 2012-06-06 2013-12-25 哈米尔顿森德斯特兰德公司 用于冲压气轮机的机电致动器和闭锁组件
EP3078595A1 (fr) * 2015-04-02 2016-10-12 Hamilton Sundstrand Corporation Système de remorquage d'une turbine à air dynamique
EP3095708A1 (fr) * 2015-05-22 2016-11-23 Hamilton Sundstrand Corporation Protection de preuve d'erreur de verrou de turbine à air dynamique
EP3112270A1 (fr) * 2015-06-29 2017-01-04 Hamilton Sundstrand Corporation Mécanisme de déverrouillage pour actionneur de turbine à air dynamique
EP3184437A1 (fr) * 2015-12-22 2017-06-28 Hamilton Sundstrand Corporation Mécanisme de déverrouillage pour une turbine éolienne actionneur
US20180100565A1 (en) * 2016-10-10 2018-04-12 Hamilton Sundstrand Corporation Actuator release mechanism
EP3461745A1 (fr) * 2017-09-28 2019-04-03 UTC Aerospace Systems Wroclaw Sp. z o.o. Mécanisme de libération pour actionneur de turbine à air dynamique
CN109710985A (zh) * 2018-12-04 2019-05-03 中国航空工业集团公司金城南京机电液压工程研究中心 一种冲压空气涡轮收放作动器快速释放机构设计方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2132682A (en) * 1935-04-17 1938-10-11 Dowty George Herbert Tail wheel and the like for aircraft
US2366121A (en) * 1942-10-16 1944-12-26 Martin-Hurst William F Forrest Electrically controlled fluidpressure operated motor
US2667953A (en) * 1949-03-18 1954-02-02 Air Associates Inc Landing gear actuator
US2811137A (en) * 1955-11-14 1957-10-29 Cleveland Pneumatic Tool Co Actuator lock mechanism
US2868482A (en) * 1955-10-18 1959-01-13 Cleveland Pneumatic Ind Inc Retractable landing gear
US3107886A (en) * 1961-11-09 1963-10-22 Kaman Aircraft Corp Hydraulic system for aircraft landing gear and hydraulic actuator therefor
US3149678A (en) * 1963-03-18 1964-09-22 Dowty Rotol Ltd Wind motors
US3614912A (en) * 1969-09-29 1971-10-26 Lionel Pacific Inc Telescoping piston central lock hydraulic actuator
US4024800A (en) * 1974-03-27 1977-05-24 Messier Hispano Actuating and bracing jack
US4337912A (en) * 1980-03-26 1982-07-06 Watton William J Fail safe retractable landing gear unit for model aircraft

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2132682A (en) * 1935-04-17 1938-10-11 Dowty George Herbert Tail wheel and the like for aircraft
US2366121A (en) * 1942-10-16 1944-12-26 Martin-Hurst William F Forrest Electrically controlled fluidpressure operated motor
US2667953A (en) * 1949-03-18 1954-02-02 Air Associates Inc Landing gear actuator
US2868482A (en) * 1955-10-18 1959-01-13 Cleveland Pneumatic Ind Inc Retractable landing gear
US2811137A (en) * 1955-11-14 1957-10-29 Cleveland Pneumatic Tool Co Actuator lock mechanism
US3107886A (en) * 1961-11-09 1963-10-22 Kaman Aircraft Corp Hydraulic system for aircraft landing gear and hydraulic actuator therefor
US3149678A (en) * 1963-03-18 1964-09-22 Dowty Rotol Ltd Wind motors
US3614912A (en) * 1969-09-29 1971-10-26 Lionel Pacific Inc Telescoping piston central lock hydraulic actuator
US4024800A (en) * 1974-03-27 1977-05-24 Messier Hispano Actuating and bracing jack
US4337912A (en) * 1980-03-26 1982-07-06 Watton William J Fail safe retractable landing gear unit for model aircraft

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5484120A (en) * 1994-03-11 1996-01-16 Sundstrand Corporation Support strut for ram air driven turbine
US8651815B2 (en) 2010-03-22 2014-02-18 Hamilton Sundstrand Corporation Lightweight stow abort mechanism
GB2479039A (en) * 2010-03-22 2011-09-28 Hamilton Sundstrand Corp Ram air turbine with locking support structure
CN102200074A (zh) * 2010-03-22 2011-09-28 哈米尔顿森德斯特兰德公司 用于冲压空气涡轮的贮存中止机构
GB2479039B (en) * 2010-03-22 2012-08-15 Hamilton Sundstrand Corp Stow abort mechanism for a ram air turbine
US8602736B2 (en) 2010-03-22 2013-12-10 Hamilton Sundstrand Corporation Stow abort mechanism for a ram air turbine
CN102285456A (zh) * 2010-06-21 2011-12-21 哈米尔顿森德斯特兰德公司 轻重量收存中止机构
GB2481523A (en) * 2010-06-21 2011-12-28 Hamilton Sundstrand Corp Ram air turbine with locking support structure
GB2481523B (en) * 2010-06-21 2012-09-12 Hamilton Sundstrand Corp Lightweight stow abort mechanism
CN102285456B (zh) * 2010-06-21 2014-07-09 哈米尔顿森德斯特兰德公司 轻重量收存中止机构
US8920062B2 (en) 2011-09-26 2014-12-30 Hamilton Sundstrand Corporation Ejection jack release mechanism
CN103010472A (zh) * 2011-09-26 2013-04-03 哈米尔顿森德斯特兰德公司 排出支柱释放机构
CN103466080A (zh) * 2012-06-06 2013-12-25 哈米尔顿森德斯特兰德公司 用于冲压气轮机的机电致动器和闭锁组件
US9365295B2 (en) 2012-06-06 2016-06-14 Hamilton Sundstrand Corporation Electromechanical actuator and latch assembly for ram air turbine
EP3078595A1 (fr) * 2015-04-02 2016-10-12 Hamilton Sundstrand Corporation Système de remorquage d'une turbine à air dynamique
US10106275B2 (en) 2015-04-02 2018-10-23 Hamilton Sundstrand Corporation Ram air turbine stowing system
US10006476B2 (en) 2015-05-22 2018-06-26 Hamilton Sundstrand Corporation Mistake proof ram air turbine downlock protection
EP3095708A1 (fr) * 2015-05-22 2016-11-23 Hamilton Sundstrand Corporation Protection de preuve d'erreur de verrou de turbine à air dynamique
EP3112270A1 (fr) * 2015-06-29 2017-01-04 Hamilton Sundstrand Corporation Mécanisme de déverrouillage pour actionneur de turbine à air dynamique
US10352416B2 (en) 2015-06-29 2019-07-16 Hamilton Sundstrand Corporation Unlocking mechanism for ram air turbine actuator
EP3184437A1 (fr) * 2015-12-22 2017-06-28 Hamilton Sundstrand Corporation Mécanisme de déverrouillage pour une turbine éolienne actionneur
US20180100565A1 (en) * 2016-10-10 2018-04-12 Hamilton Sundstrand Corporation Actuator release mechanism
US10753440B2 (en) * 2016-10-10 2020-08-25 Hamilton Sundstrand Corporation Actuator release mechanism
EP3461745A1 (fr) * 2017-09-28 2019-04-03 UTC Aerospace Systems Wroclaw Sp. z o.o. Mécanisme de libération pour actionneur de turbine à air dynamique
US11014685B2 (en) 2017-09-28 2021-05-25 Hamilton Sunstrand Corporation Release mechanism
CN109710985A (zh) * 2018-12-04 2019-05-03 中国航空工业集团公司金城南京机电液压工程研究中心 一种冲压空气涡轮收放作动器快速释放机构设计方法
CN109710985B (zh) * 2018-12-04 2023-01-24 中国航空工业集团公司金城南京机电液压工程研究中心 一种冲压空气涡轮收放作动器快速释放机构设计方法

Also Published As

Publication number Publication date
JPS63501210A (ja) 1988-05-12
IL80189A0 (en) 1986-12-31
EP0243487A1 (fr) 1987-11-04

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