GB8401179D0 - Helicopter attitude airspeed and retention system - Google Patents

Helicopter attitude airspeed and retention system

Info

Publication number
GB8401179D0
GB8401179D0 GB848401179A GB8401179A GB8401179D0 GB 8401179 D0 GB8401179 D0 GB 8401179D0 GB 848401179 A GB848401179 A GB 848401179A GB 8401179 A GB8401179 A GB 8401179A GB 8401179 D0 GB8401179 D0 GB 8401179D0
Authority
GB
United Kingdom
Prior art keywords
airspeed
autopilot
retention system
engaged
helicopter attitude
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.)
Granted
Application number
GB848401179A
Other versions
GB2136576B (en
GB2136576A (en
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.)
Raytheon Technologies Corp
Original Assignee
United Technologies 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
Priority claimed from US06/176,832 external-priority patent/US4382283A/en
Application filed by United Technologies Corp filed Critical United Technologies Corp
Publication of GB8401179D0 publication Critical patent/GB8401179D0/en
Publication of GB2136576A publication Critical patent/GB2136576A/en
Application granted granted Critical
Publication of GB2136576B publication Critical patent/GB2136576B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/0055—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots with safety arrangements
    • G05D1/0061—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots with safety arrangements for transition from automatic pilot to manual pilot and vice versa
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
    • G01P5/16—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid using Pitot tubes, e.g. Machmeter
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/08—Control of attitude, i.e. control of roll, pitch, or yaw
    • G05D1/0808—Control of attitude, i.e. control of roll, pitch, or yaw specially adapted for aircraft
    • G05D1/0858—Control of attitude, i.e. control of roll, pitch, or yaw specially adapted for aircraft specially adapted for vertical take-off of aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Automation & Control Theory (AREA)
  • Navigation (AREA)
  • Traffic Control Systems (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Mechanical Control Devices (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The description is substantially identical to that of Patent Specification GB 2081474A but the claims are directed to a helicopter pitch axis autopilot system with provision for manual override when the cyclic pitch control stick is moved away from its trim position, the system memorising the trim position so that the autopilot can subsequently be re-engaged. When the autopilot is re-engaged an airspeed error limiter ensures a smooth transition.
GB08401179A 1980-08-08 1984-01-17 Helicopter airspeed measuring system Expired GB2136576B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/176,832 US4382283A (en) 1980-08-08 1980-08-08 Helicopter attitude and airspeed acquisition and retention system
GB8121053A GB2081474B (en) 1980-08-08 1981-07-08 Helicopter attitude and airspeed acquisition and retention system

Publications (3)

Publication Number Publication Date
GB8401179D0 true GB8401179D0 (en) 1984-02-22
GB2136576A GB2136576A (en) 1984-09-19
GB2136576B GB2136576B (en) 1985-03-27

Family

ID=26280057

Family Applications (4)

Application Number Title Priority Date Filing Date
GB08401176A Expired GB2136603B (en) 1980-08-08 1984-01-17 Helicopter attitude and airspeed acquisition and retention system
GB08401179A Expired GB2136576B (en) 1980-08-08 1984-01-17 Helicopter airspeed measuring system
GB08401178A Expired GB2136605B (en) 1980-08-08 1984-01-17 Helicopter attitude and airspeed acquisition and retention system
GB08401177A Expired GB2136604B (en) 1980-08-08 1984-01-17 Helicopter attitude and airspeed acquisition and retention system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB08401176A Expired GB2136603B (en) 1980-08-08 1984-01-17 Helicopter attitude and airspeed acquisition and retention system

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB08401178A Expired GB2136605B (en) 1980-08-08 1984-01-17 Helicopter attitude and airspeed acquisition and retention system
GB08401177A Expired GB2136604B (en) 1980-08-08 1984-01-17 Helicopter attitude and airspeed acquisition and retention system

Country Status (1)

Country Link
GB (4) GB2136603B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2610411B1 (en) * 1987-02-04 1989-06-09 Sfim METHOD AND DEVICE FOR MEASURING THE SPEED IN RELATION TO THE AIR OF A LOW-SPEED HELICOPTER
FR2741855B1 (en) * 1995-12-05 1998-01-30 Eurocopter France CYCLIC SLEEVE SYSTEM FOR SPEED STABILITY OF A HELICOPTER
US11016506B2 (en) 2018-04-25 2021-05-25 The Boeing Company Propulsor trim prediction for aircraft
EP3561631B1 (en) * 2018-04-25 2022-11-23 The Boeing Company Pitch and thrust control for compound aircraft
US11312480B2 (en) 2018-06-01 2022-04-26 Textron Innovations Inc. System and method for controlling rotorcraft
CN111498095A (en) * 2019-01-02 2020-08-07 贝尔德事隆公司 System and method for controlling a rotorcraft

Also Published As

Publication number Publication date
GB2136576B (en) 1985-03-27
GB2136604B (en) 1985-03-27
GB8401177D0 (en) 1984-02-22
GB8401176D0 (en) 1984-02-22
GB2136605B (en) 1985-05-15
GB2136605A (en) 1984-09-19
GB2136603A (en) 1984-09-19
GB2136576A (en) 1984-09-19
GB2136603B (en) 1985-06-05
GB8401178D0 (en) 1984-02-22
GB2136604A (en) 1984-09-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980708