GB938081A - Improvements in or relating to pilot static pressure sensing devices - Google Patents

Improvements in or relating to pilot static pressure sensing devices

Info

Publication number
GB938081A
GB938081A GB2148860A GB2148860A GB938081A GB 938081 A GB938081 A GB 938081A GB 2148860 A GB2148860 A GB 2148860A GB 2148860 A GB2148860 A GB 2148860A GB 938081 A GB938081 A GB 938081A
Authority
GB
United Kingdom
Prior art keywords
pressure
yaw
pitch
static pressure
union
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
GB2148860A
Inventor
Reginald Gene Austin
John Denman Sibley
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 Aircraft Ltd
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 GB2148860A priority Critical patent/GB938081A/en
Priority to DEW29944A priority patent/DE1226332B/en
Publication of GB938081A publication Critical patent/GB938081A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane
    • G01P13/025—Indicating direction only, e.g. by weather vane indicating air data, i.e. flight variables of an aircraft, e.g. angle of attack, side slip, shear, yaw
    • 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

Abstract

938,081. Pitot tubes. WESTLAND AIRCRAFT Ltd. May 9, 1961 [June 18, 1960], No. 21488/60. Class 69 (1). Measurement of airspeed pitch and yaw in a rotary-wing aircraft is effected by a measuring device having in combination means for sensing pitot pressure, ambient static pressure and differential pitch and yaw pressure, respectively, with means for providing static pressure compensation. The device comprises a probe which protrudes three feet ahead of the aircraft fuselage and mounts a carrier 2 with a plug 3 on which is an axial member 4 with a nose-cap 5 which is electrically heated by a de-icing coil 16. In the nose-cap is an axial orifice 6 which senses pitot pressure and two other orifices 7 and 8 which are laterally offset at 40 degrees from the central axis and which sense the differential yaw and pitch pressure. An ellipsoidal fairing 11 between the plug 3 and the cap 5 has holes 12 equally spaced around its maximum diameter. The fairing is specially shaped so that the holes 12 are in a region of super-velocity and are subject to a pressure-ratio which is relatively insensitive both to flow direction and to Reynold's number and the static pressure inside it at 13 is at true ambient value. The orifices 6, 7 and 8 and the space 13 communicate by way of their respective pipes 9, 21, 22, and 14 with an external pressure union 10 from which operates a pitch or yaw meter 27. An altimeter 23 and a rate of climb meter 24 are connected with tube 14 by way of union 10. An air speed indicator 25 and an air mileage indicator 26 also are connected between the tubes 9 and 14 by the union 10.
GB2148860A 1960-06-18 1960-06-18 Improvements in or relating to pilot static pressure sensing devices Expired GB938081A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2148860A GB938081A (en) 1960-06-18 1960-06-18 Improvements in or relating to pilot static pressure sensing devices
DEW29944A DE1226332B (en) 1960-06-18 1961-05-06 Device for measuring the true static air pressure in the air space through which an aircraft flew with a probe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2148860A GB938081A (en) 1960-06-18 1960-06-18 Improvements in or relating to pilot static pressure sensing devices

Publications (1)

Publication Number Publication Date
GB938081A true GB938081A (en) 1963-09-25

Family

ID=10163789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2148860A Expired GB938081A (en) 1960-06-18 1960-06-18 Improvements in or relating to pilot static pressure sensing devices

Country Status (2)

Country Link
DE (1) DE1226332B (en)
GB (1) GB938081A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4448069A (en) * 1981-01-08 1984-05-15 Fgp Instrumentation Airspeed sensing post for determining relative velocity of a fluid and a carrier
US4823615A (en) * 1987-11-04 1989-04-25 Preso Industries Self-averaging pitot tube probe and method for measuring fluid flow
US4920808A (en) * 1986-04-24 1990-05-01 Roland Sommer Device and method for measuring the flow velocity of a free flow in three dimensions
GB2274338A (en) * 1993-01-18 1994-07-20 Donald Clive Webber Combined airspeed and direction detector, measurer and indicator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113125799B (en) * 2021-04-19 2024-01-26 重庆地格科技有限责任公司 Intelligent anemograph based on pitot tube

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE700614C (en) * 1934-12-30 1940-12-24 Versuchsanstalt Fuer Luftfahrt Aircraft speedometers
US2237306A (en) * 1939-09-09 1941-04-08 Manley J Hood Angle-of-attack indicator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4448069A (en) * 1981-01-08 1984-05-15 Fgp Instrumentation Airspeed sensing post for determining relative velocity of a fluid and a carrier
US4920808A (en) * 1986-04-24 1990-05-01 Roland Sommer Device and method for measuring the flow velocity of a free flow in three dimensions
US4823615A (en) * 1987-11-04 1989-04-25 Preso Industries Self-averaging pitot tube probe and method for measuring fluid flow
GB2274338A (en) * 1993-01-18 1994-07-20 Donald Clive Webber Combined airspeed and direction detector, measurer and indicator

Also Published As

Publication number Publication date
DE1226332B (en) 1966-10-06

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