GB796910A - Improvements relating to mach-number meters - Google Patents

Improvements relating to mach-number meters

Info

Publication number
GB796910A
GB796910A GB2163156A GB2163156A GB796910A GB 796910 A GB796910 A GB 796910A GB 2163156 A GB2163156 A GB 2163156A GB 2163156 A GB2163156 A GB 2163156A GB 796910 A GB796910 A GB 796910A
Authority
GB
United Kingdom
Prior art keywords
static pressure
difference
mach number
pointer
scale
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
GB2163156A
Inventor
Frank Dove
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.)
Sperry Gyroscope Co Ltd
Original Assignee
Sperry Gyroscope Co 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 Sperry Gyroscope Co Ltd filed Critical Sperry Gyroscope Co Ltd
Priority to GB2163156A priority Critical patent/GB796910A/en
Publication of GB796910A publication Critical patent/GB796910A/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
    • 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
    • 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
    • G01P5/17—Coupling arrangements to the indicating device
    • G01P5/175—Coupling arrangements to the indicating device with the determination of Mach number

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

796,910. Automatic speed-control systems. SPERRY GYROSCOPE CO., Ltd. July 12, 1958, No. 21631/56. Class 38 (4). [Also in Groups XXXVI and XXXVIII] A Mach number meter consists of apparatus which produces a signal the nature of which varies according to the Mach number of the aircraft, apparatus for producing a similar signal the quality of which varies in a similar manner to the above according to the setting of a pointer on a scale, and means for comparing these two signals. The difference between the signals may be used either to cause a servomotor to alter the setting of the pointer on the said scale until the scale reading coincides with the Mach number of the aircraft or to cause an alteration in the said Mach number of the aircraft until it coincides with the scale reading. A height unit 1 measures the static pressure and drives the variable contact 5 of potentiometer 3 by means of a servo mechanism 14 and an air-speed unit 2 measures the difference between dynamic and static pressure and uses the difference to drive variable contact 6 of the potentiometer 4 by means of servo 15. The resultant signal which is fed into resistor 9 is proportional to the difference between dynamic and static pressure divided by the static pressure. Similarly the signal which is fed into resistor 10 is a function of the position of the pointer 23. Resistances 7, 18 and 19 and their cross-tappings are so arranged that this latter function of position of the pointer is very similar to the function of the Mach number which yields the expression :- " difference between dynamic and static pressure divided by static pressure." Reference is made to modifications using inductive potential dividers, non-linear variation of the potential dividers 21, 22, and a non-linear scale at 8.
GB2163156A 1956-07-12 1956-07-12 Improvements relating to mach-number meters Expired GB796910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2163156A GB796910A (en) 1956-07-12 1956-07-12 Improvements relating to mach-number meters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2163156A GB796910A (en) 1956-07-12 1956-07-12 Improvements relating to mach-number meters

Publications (1)

Publication Number Publication Date
GB796910A true GB796910A (en) 1958-06-18

Family

ID=10166180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2163156A Expired GB796910A (en) 1956-07-12 1956-07-12 Improvements relating to mach-number meters

Country Status (1)

Country Link
GB (1) GB796910A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128450A (en) * 1960-01-04 1964-04-07 Litton Industries Inc Mach number indicating and computing means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128450A (en) * 1960-01-04 1964-04-07 Litton Industries Inc Mach number indicating and computing means

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