US2612757A - Turbine apparatus driven by either of two unrelated sources of air pressure - Google Patents

Turbine apparatus driven by either of two unrelated sources of air pressure Download PDF

Info

Publication number
US2612757A
US2612757A US744495A US74449547A US2612757A US 2612757 A US2612757 A US 2612757A US 744495 A US744495 A US 744495A US 74449547 A US74449547 A US 74449547A US 2612757 A US2612757 A US 2612757A
Authority
US
United States
Prior art keywords
fluid pressure
throttle
rotor
turbine
stator
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.)
Expired - Lifetime
Application number
US744495A
Other languages
English (en)
Inventor
Jr Walter Dorwin Teague
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.)
Bendix Aviation Corp
Original Assignee
Bendix Aviation 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 Bendix Aviation Corp filed Critical Bendix Aviation Corp
Priority to US744495A priority Critical patent/US2612757A/en
Priority to FR968840D priority patent/FR968840A/fr
Application granted granted Critical
Publication of US2612757A publication Critical patent/US2612757A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/02—Arrangement of sensing elements
    • F01D17/06—Arrangement of sensing elements responsive to speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/148—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of rotatable members, e.g. butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
    • F01D17/205—Centrifugal governers directly linked to valves

Definitions

  • the invention hereof relates to turbine'apparatus or the like, and, particularly to means having to do with the structure and operation of a turbine itself, as well as to elements "associated therewith. also having been broken away and omitted;
  • Figure 2 is a view, taken from the left :of overcome disadvantages of former devices of Figure 1, 01? the structure thereof, parts being the above indicated character 'and to do so by in elevation and section and others having .been novel eifeetive means. broken away; V
  • FIG. 3 is a fragmentary detail takenisub-; which that portion thereof operating as the stastantially along the line i3--3 of Figure 2; tionary means or stator having stationary vanes
  • Figure 4 is a fra mentary 'detailFtaken subfor directing the operating 'fluid to the rotor tantially along the line 'I-i4 :of Fi re vanes, also "has vanes which have some move-
  • Figure 5 is a dev loped p 0f Portions of ment relative to the stationary vanes for varyturbine indicated in Figures 1 and 2, Sh w ing the effective fluid 'delivery ar f th stator vanes in the fully closed throttling .rela-' spaces 'between the stator vanes, as inthrottllng tion thereof to thevanes of a rotor, w heta o the rotor between maximum and minimum vanes-aremovable relative to each other; throttling
  • FIG. 6 is a view partially in top plan and Another object is to provide a turbine of the p rtially in section of means where y e turabove-indicated character, which is adapted "to blue is S p t y pplied with fluid Pressure be carried by a vehicle 'or apparatus "having when the turbine carrier is stationary, which controlled movement, and in which the turbine p y may be automatically eted w e i Operative by "th ra pressure lti from the carrier moves as aforesaid, and as will fursuch movement. therappear; and
  • a turbine which Side View pa y in e on of is selectively operative .froma plurality of fluid the Structureshown i fi. sources, such as the source of ram pressure Referringperticularly to i res 1 and 2, aforesaid, and "a fluid pressure supply mea s device comprises a unit til adapted to be car-" separate from the controlled vehicle or appalied y pp Figure avin controlled ratus for operating 'the turbine when the appamovement, and in which the unit in comprises ratuscarryi-ng the turbine isstationary.
  • Another object is to provide means which is pressure'inlets-lfiend c v yadapted for connecting the separate fluid supply
  • a Vaned rotor facing the ram p sure means aforesaid to conduit means of the veinlet 15 and Positionedfbehind the fluid P hicle, 'andis responsive to the controlled vehicle Sure inlet 113011818 vanes 21 d p n i r o movement for disconnection from "the conduit P111 1 11 by fluid from the inlets i6 and 18, 1 115 and t hi h whereupgn "t conduit is provided with a shaft 23 having a partitioned tomatically closed. 7 orslotted portion 22.
  • Another “object is "to provide a .novel turbine A 'Vaned Stator forwardly $04316 18ft nozzle or throttling means, which is of substanof rotor Ill, as shown, des a a i ary m n minimumsjzeandweight, member 26 having vanes 28 next to the rotor
  • Another object is to provide means of th 20 adapted to direct fluid to the rotor vanes, above-mdi'cated character which are simple and stator includes a ⁇ forwardlyv ex? durable in construction, economical 'to 'manutending casing 0.
  • Figure '2 has a portion Swear-tending radially in;
  • Figure 1 is a view partially in sectionpan partially in elevation of a structure embody? ing features of the invention in one form,.pa'it's has vanes 44 adapted to vary the effective delivery area A, Figure 5, of spaces 46 between the stator vanes 28, and is provided with linkage coacting means 48, which in this instance, is a member of substantially U-shape secured, as by screws 50 to a flange 62 of the throttle 40, and having its legs extending axially in side elevation, as seen in Figure 1, and substantially radially in end elevation, as seen in Figure 2.
  • a spring 54 is disposed in the casing 30.
  • Arms 56 in the casing 30, have forward-end lateral pivot connection 58 to the forward end of the slotted shaft portion 22 and carry flyweight rollers 80 at their rear ends for cooperation with cam elements 62 having surfaces 64 inclined to the shaft axis on which the rollers 68 ride laterally outwardly responsive to rotation of the shaft 23 to move the cam elements 62 axially forwardly against the action of the spring 54.
  • a push rod 68 extends along the axis of the shaft portion 22 through an end closure 68 of the casing 30 and has a hollow portion 10 in the casing 30 journaled, as by a bearing 72, about thecam elements 62.
  • the rod 06 is axially movable by the elements 62 to compress the spring 54 against the casing end closure 68.
  • the linkage mechanism I4 comprises a shaft 16 journaled in bearings I8 and 86 on the closure 68, an arm 82 cooperating with the linkage coacting means 48, and an arm 84 connected to the push rod 66 by a link 86 Figure 3 and responsive to axial movement of the push rod to convert the axial movement into turning movement of the throttle 40.
  • Fluid pressure responsive means 88, Figures 2 and 4 also mounted on the casing end closure 68, comprises a cylinder 90 and a piston 92 and is adapted to receive fluid from the portion 36 of the conduit 32 to move another arm 94 to effect turning movement of the throttle 40.
  • a second spring 96 is connected between a member 98 on the throttle 40 and a member I on the closure 68 to bias the throttle 40 in a normally open direction and against turning movements of the arm 82 in a throttle closing direction.
  • Means IOI cooperating between the throttle 40 and the casing end 68 is adapted to adjust the limits of the throttle turning movement, as hereinafter explained.
  • a cover I03, fixed at one end to the throttle 40 to turn therewith, as shown in Figure 1, is journaled at its other end on a stub shaft or pin I05 fixed to a portion I0'i of the closure 68 to prevent cantilever movement of the cover and parts carried thereby, which would unbalance the throttle and other parts.
  • supply means I02 is adapted for connection, as by means I04 hereafter explained, to the apparatus I2 to supply fluid pressure to the inlet I8, and is responsive to controlled movement of the apparatus, as in the direction of an arrow B, relative to the supply means I02 for disconnection from the apparatus.
  • the supply means I02 may comprise a tripod or stand I06 for supporting a fluid pressure tank I08 and having a swivel head I I0 carrying a teles'copic tube II2 that is adapted to be connected into means I04 carried by the vehicle I2.
  • the tube H2 is provided with a valve I60 of the type employed in the art to stop further flow from the pressure tank I08 upon the disconnection of the tube I I2 from the vehicle I2.
  • the means I04 comprises, in this instance a bushing II 4, secured to an outer panel or wall II 6 of the apparatus or vehicle I2, supporting a seal H8 and connected to a conduit I20 con- 4 necting with inlet I8.
  • the conduit I20 also includes a check valve I22 opening to the fluid responsive means 20 and 88.
  • the supply means I02 is positionable adjacent the apparatus I2 to the end that the head IIO thereof and its associated tube H2 is rotatable through an are D that is coplanar with the plane in which the means I04 of the apparatu I-2 are positioned.
  • the tube I I2 may be slip fitted into the bushing H4 and thereby connect the conduit I20 with the tube II2 so that a separate or independent source of fluid pressure is made available for the vehicle I2 when it is stationary.
  • the movable stator vanes 44 which have spaces 45 therebetween, are illustrated as in positions fully closin the spaces 46 between the stationary stator vanes 28, to which positions they have been moved in the direction of an arrow E, Figures 2 and 5.
  • This is not the normal position, but has been chosen for better illustration of how an area F of each vane 44 more than fully closes the area A.
  • each area F is centered opposite, and substantially equal to, an area G of one of the vanes 28.
  • Movement of the throttle 40 between the abovementioned closed and open positions is limited by the means IOI, which comprises adjustable stop screws I24 and I26, carried by a bracket I28 on the throttle, which engage an arm I30 mounted on the casing end closure 68.
  • the arm 84 is loosely mounted on the shaft 16 and, when moved clockwise by the plunger 66, acts through an arm I32, fixed to the shaft 16, to turn the throttle 48.
  • This arrangement is provided so that, when the piston 82 is actuated to turn the throttle, the'arm I32 will move away from the arm 84, and the piston not be required to act against resistance by the spring 54.
  • a set screw I34 is provided in the arm I32 for engaging the arm 84 and effecting adjustment between the arms.
  • the housing I4 has an annular portion I36 surrounding a portion I38 having an annular groove or channel I40 which conducts fluid from the inlet I8 to a plurality of nozzles I42 extending diagonally rearwardly and downwardly from the forward part of the channel I40 toward the vanes 2I of the rotor 20 and distributed-about the rotor axis.
  • a valve associated with the head I I0 is opened to release fluid from the tank I08, which fluid opens the check valve I22 and continues to the inlet I8, from which it travels to the channel I40, through the nozzles I42, and into the portions 34 and 36 of the conduit 32 to the cylinder 90.
  • a turbine apparatus adapted to be carried by a movable vehicle, said apparatus comprising a housing having a ram pressure inlet and an inlet for receiving fluid pressure from an independent source, a vaned rotor positioned behind both of said inlets and operable in response to fluid pressure from either of said inlets, said rotor having a forwardly sitioning said throttle, a spring in the casing extending shaft, a vaned stator positioned forward of the rotor including a stationary member having a fixed vaned portion'next to's'aid rotor for directing fluid pressure to said rotor and a forwardly extending casing portion,-a conduit extending radially inward throughione Jnfisaflfl stationary vanes and ardallyiorwardrin :a wan of the casing to the forward casing ':end,.-;a
  • vaned throttle journaled in c said casing for movement about the rotor axis-to vary 'theiefa fective delivery area of the spaces between the stator vanes, linkage means for 'adiustably poarms :in :said casing having lateral pivot iconnections :to the shaft, 1a 'flyweight rollericarried by each of saidarms, cam elements havingfsurfaces inclined to the rotor axis, :saidrollers being adapted to ride laterally outward onesaidrcam surfaces in response to the rotation of said-shaft whereby .said cam elements arermoved'iaidally forward, a push rodextendingzforwardly through said casing and and having a hollow portion in the :casing journaled about said cam element,
  • said push rod being axially movable ,in mesponse to the lateral outward movement l-of said flyweight rollers to compress said spring against said casing end, first means operatively con.- necting said push rod with thelinkagemeans carried by said throttle and responsive to -axial movements of said pushrod upon the outward movement of said flyweight rollers .to convert said axial movementinto a turning movementof said.
  • Turbine apparatus for use in a vehicle and adapted to be operated .by an independent :source of fluid pressure when said vehicleis stationary,
  • said apparatus comprising a 5 housing, a vaned rotor, 'a shaft :on said rotor for rotatably supporting said rotor in said housing, .a
  • a ram pressure inlet disposed in said housing forwardly of said throttle, the vanes of said throttle being soconstructed and arranged as to open or close the spaces between the vanes of said stator upon the" relative displacement of the former to the latter to thereby control thezamount of ram pressure passing from said ram ressure inlet through said:
  • a unit adapted to be carried by a movable vehicle and having a turbine operated by ram pressure when said vehicle is in motion through a fluid medium
  • said turbine including a housing having a ram pressure inlet, a vaned rotor mounted for rotation within said housing, a fixed stator mounted in said housing forwardly of said rotor and having vanes for directing ram pressure from said inlet to said rotor, a vaned throttle mounted .
  • said housing forwardly of said stator and for rotary movement relative to said stator, the vanes of said throttle being adapted to open or close the spaces between the statorvanes to thereby control the delivery of ram pressure to said rotor
  • spring means biasing said rotary throttle to a position where the spaces between the vanes of the stator are fully open
  • linkage means connecting said throttle to a governor carried by said turbine whereby said throttle is moved relative to said stator against the bias of said spring means to thereby control the ram pressure delivered from said inlet to said rotor in response to
  • a turbine apparatus adapted for use in movable vehicle and operable in response to ram pressure developed by the movement of said vehicle through a fluid medium, said apparatus including a housing defining a ram pressure inlet, a vaned rotor mounted for rotation in said housing, a fixed stator mounted in said housing forwardlyof said rotor.
  • a unit adapted to be carried by a movable apparatus comprising a vaned rotor, an element driven by said vaned rotor, said vaned rotor being rotatable in response to fluid pressure, a vaned stator positioned forwardly of said rotor and having spaced vanes, a throttle positioned forwardly of said stator and having spaced vanes, said throttle being mounted for rotary movement relative to said stator, the vanes of said throttle being so constructed and arranged as to open or close the space between the vanes of said stator upon the relative movement of the former to the latter, means for biasing said throttle to a first predetermined position whereby the spaces between the vanes of said stator are fully open, a source of fluid pressure, means for connecting said source of fluid pressure to said unit, nozzle means for directing said fluid pressure between the vanes of said stator and against said rotor, fluid pressure responsive means connected with and operative in response to fluid pressure from said pressure source to move said throttle to a second predetermined position where
  • governor means carried by said element and operatively connected to said throttle, said governor means being operative in response to the speed of said element to control the relative position of said throttle to said stator in response to the speed of said element when the fluid pressure responsive means is inoperative.
  • a turbine driven selectively by either of two unrelated sources of fluid pressure
  • the combination comprising a first conduit for delivering fluid pressure from one of said sources to said turbine, means responsive to turbine speed for regulating the fluid pressure delivered from said first conduit to said turbine, a second conduit for delivering fluid from the other of said sources to said turbine, and fluid pressure responsive means operated by the fluid pressure from said other source for moving said regulating means to a position closing said first conduit upon delivery of fluid pressure from said other source through said second conduit to said turbine.
  • a turbine driven selectively by either of two unrelated sources of fluid pressure comprising an inlet to said turbine, a first conduit for delivering fluid pressure from one of said sources to said turbine inlet, a valve mechanism to control the fluid pressure delivered from said first conduit to said turbine inlet, turbine speed responsive means, means operatively connecting said speed responsive means to said valve mechanism for regulating the fluid pressure delivered from said first conduit to said turbine inlet to thereby regulate the speed of said turbine, a second conduit for delivering fluid pressure from the other of said sources to said turbine inlet, fluid pressure responsive means operated by the fluid pressure from said other source, and other means operatively connecting I other source through said second conduit to said I turbine inlet.
  • a turbine driven selectively by two unrelated sources of fluid pressure comprising an inlet to said turbine, a first conduit for delivering fluid pressure from oneof said sources of fluid pressure to said turbine inlet, a valve mechanism to control fluid pressure delivered from said first conduit to said turbine inlet, spring means biasing said valve mechanism in a first opening direction to open said first conduit to said turbine inlet, a second conduit for delivering fluid pressure from the other of said sources of fluid pressure to said turbine inlet, fluid pressure responsive means connected to said other source of fluid pressure, means operatively connecting said fluid pressure responsive means to said valve mechanism whereby the operation of the fluid pressure responsive means by its associated source of fluid pressure moves said 10 valve mechanism in a second direction to close said first conduit to said turbine inlet against the biasing force of said spring means when fluid pressure from said other source of fluid pressure is delivered through said second conduit to said turbine inlet, turbine speed responsive means, and means operatively connecting said speed responsive' means to said valve mechanism whereby said valve mechanism is operated against the bias of said sprin to regulate the delivery of fluid pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
US744495A 1947-04-28 1947-04-28 Turbine apparatus driven by either of two unrelated sources of air pressure Expired - Lifetime US2612757A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US744495A US2612757A (en) 1947-04-28 1947-04-28 Turbine apparatus driven by either of two unrelated sources of air pressure
FR968840D FR968840A (fr) 1947-04-28 1948-04-28 Perfectionnements aux turbines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US744495A US2612757A (en) 1947-04-28 1947-04-28 Turbine apparatus driven by either of two unrelated sources of air pressure

Publications (1)

Publication Number Publication Date
US2612757A true US2612757A (en) 1952-10-07

Family

ID=24992912

Family Applications (1)

Application Number Title Priority Date Filing Date
US744495A Expired - Lifetime US2612757A (en) 1947-04-28 1947-04-28 Turbine apparatus driven by either of two unrelated sources of air pressure

Country Status (2)

Country Link
US (1) US2612757A (fr)
FR (1) FR968840A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2847186A (en) * 1953-01-12 1958-08-12 Harvey Machine Co Inc Fluid driven power unit
US2966332A (en) * 1957-06-20 1960-12-27 Fairchild Engine & Airplane Overspeed control for turbine rotor
US3019659A (en) * 1959-08-31 1962-02-06 Bendix Corp Centrifugal governor having axiallyaligned weights
US3064942A (en) * 1957-09-03 1962-11-20 Thomas B Martin Emergency ram air power supply
US3124931A (en) * 1964-03-17 Motive fluid control for a re-expansion gas turbine engine
US3180614A (en) * 1963-06-21 1965-04-27 Gen Electric Control system for fluid turbines
US3269117A (en) * 1965-06-28 1966-08-30 John H Tweet Air driven turbopump

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190617783A (en) * 1906-08-07 1907-08-07 Reginald Haddan Improvements in the Regulation of Multiple Expansion Turbines
US898127A (en) * 1904-07-22 1908-09-08 Matthew R Moore Turbine.
US1583621A (en) * 1924-03-20 1926-05-04 Steinberg Reuben Automobile exhaust generator propulsion
US1894117A (en) * 1931-10-15 1933-01-10 Gen Electric Elastic fluid turbine
US1921533A (en) * 1930-12-19 1933-08-08 Fisk Rubber Co Fluid pressure connection
US2397342A (en) * 1944-03-18 1946-03-26 Universal Lubricating Systems Lubricant-carrying means
US2411552A (en) * 1943-01-20 1946-11-26 Westinghouse Electric Corp Turbine apparatus
US2438357A (en) * 1948-03-23 Double rotation turbodrjve

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438357A (en) * 1948-03-23 Double rotation turbodrjve
US898127A (en) * 1904-07-22 1908-09-08 Matthew R Moore Turbine.
GB190617783A (en) * 1906-08-07 1907-08-07 Reginald Haddan Improvements in the Regulation of Multiple Expansion Turbines
US1583621A (en) * 1924-03-20 1926-05-04 Steinberg Reuben Automobile exhaust generator propulsion
US1921533A (en) * 1930-12-19 1933-08-08 Fisk Rubber Co Fluid pressure connection
US1894117A (en) * 1931-10-15 1933-01-10 Gen Electric Elastic fluid turbine
US2411552A (en) * 1943-01-20 1946-11-26 Westinghouse Electric Corp Turbine apparatus
US2397342A (en) * 1944-03-18 1946-03-26 Universal Lubricating Systems Lubricant-carrying means

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124931A (en) * 1964-03-17 Motive fluid control for a re-expansion gas turbine engine
US2847186A (en) * 1953-01-12 1958-08-12 Harvey Machine Co Inc Fluid driven power unit
US2966332A (en) * 1957-06-20 1960-12-27 Fairchild Engine & Airplane Overspeed control for turbine rotor
US3064942A (en) * 1957-09-03 1962-11-20 Thomas B Martin Emergency ram air power supply
US3019659A (en) * 1959-08-31 1962-02-06 Bendix Corp Centrifugal governor having axiallyaligned weights
US3180614A (en) * 1963-06-21 1965-04-27 Gen Electric Control system for fluid turbines
US3269117A (en) * 1965-06-28 1966-08-30 John H Tweet Air driven turbopump

Also Published As

Publication number Publication date
FR968840A (fr) 1950-12-06

Similar Documents

Publication Publication Date Title
US4037986A (en) Bladed rotors having control means for effecting blade pitch adjustment
US3672163A (en) Integral fuel control
US2903970A (en) Combination seal for a pump
US2474033A (en) Apparatus for metering the fuel supplied to prime movers
US2612757A (en) Turbine apparatus driven by either of two unrelated sources of air pressure
US2376199A (en) Control for aircraft superchargers
US2455251A (en) Constant thrust fan
US2428708A (en) Turbosupercharger
US2598674A (en) Fuel system for thermal power plants
US2689606A (en) Fuel feeding system for gas turbine engines
US2521736A (en) Speed responsive valve
US2945672A (en) Gas turbine unit
US2616508A (en) Control system for gas turbine propeller engines
US3187505A (en) Gas turbine fuel regulator
US2766580A (en) Gas turbine apparatus
US3166989A (en) Compressor bleed actuator
US2794129A (en) Combined air turbine control valve mechanism and generator
US2569664A (en) Combined mechanical and pneumatic governor
US2447388A (en) Control system and apparatus
US2697328A (en) System for controlling gas temperatures
US2869565A (en) Mechanical-pneumatic turbine control
US2926681A (en) Speed governing systems for turbines
US2922429A (en) Overspeed prevention means for turbines
US3067580A (en) Fuel enrichment control for a gas turbine engine
US2731022A (en) Speed regulating mechanism