GB1022695A - Improvements in or relating to hydraulic pumps and gearing systems in aircraft - Google Patents

Improvements in or relating to hydraulic pumps and gearing systems in aircraft

Info

Publication number
GB1022695A
GB1022695A GB4076263A GB4076263A GB1022695A GB 1022695 A GB1022695 A GB 1022695A GB 4076263 A GB4076263 A GB 4076263A GB 4076263 A GB4076263 A GB 4076263A GB 1022695 A GB1022695 A GB 1022695A
Authority
GB
United Kingdom
Prior art keywords
gear
shaft
turbine
gears
speed
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
Application number
GB4076263A
Inventor
Charles Reginald Churn
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.)
Westland Group PLC
Original Assignee
Westland Aircraft Ltd
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 Westland Aircraft Ltd filed Critical Westland Aircraft Ltd
Priority to GB4076263A priority Critical patent/GB1022695A/en
Publication of GB1022695A publication Critical patent/GB1022695A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/003—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion the gear-ratio being changed by inversion of torque direction

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

1,022,695. Change-speed gear. WESTLAND AIRCRAFT Ltd. Sept. 28, 1964 [Oct. 16, 1963], No. 40762/63. Heading F2D. [Also in Division F1] Shafts 1, 2 are connected by different ratio gear trains 3, 4 and 8, 9 including oppositely acting freewheels 7, 12 so that either shaft may drive the other but at different speed ratios. In a gas turbine engine starting system, the shaft 1 is connected to an hydraulic motor (not shown) and carries the freewheel gears 3, 8, while the turbine shaft 2 has fixed thereon a gear 4 meshing the gear 3, and a gear 9 meshing, through stepped gears 16, 17 and an idler 18, the gear 8. On starting, the motor shaft 1 drives the turbine shaft 2 through step-up gears 3, 4 until self-sustaining speed is reached, the outer portion 11 of the gear 8 overrunning the hub 10 thereof. The turbine is then accelerated, and a condition occurs in which the motor and turbine drive the shafts 1, 2, respectively, with neither freewheel transmitting torque. When the turbine reaches full speed, it drives the shaft 1 through step-down gearing 9, 16, 17, 18, 8, the hydraulic motor then being driven to act as a pump. The gear trains may include sliding gears or clutches, and there may be more than one driving or driven shaft.
GB4076263A 1963-10-16 1963-10-16 Improvements in or relating to hydraulic pumps and gearing systems in aircraft Expired GB1022695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4076263A GB1022695A (en) 1963-10-16 1963-10-16 Improvements in or relating to hydraulic pumps and gearing systems in aircraft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4076263A GB1022695A (en) 1963-10-16 1963-10-16 Improvements in or relating to hydraulic pumps and gearing systems in aircraft

Publications (1)

Publication Number Publication Date
GB1022695A true GB1022695A (en) 1966-03-16

Family

ID=10416490

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4076263A Expired GB1022695A (en) 1963-10-16 1963-10-16 Improvements in or relating to hydraulic pumps and gearing systems in aircraft

Country Status (1)

Country Link
GB (1) GB1022695A (en)

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