GB575008A - Improvements in or relating to instruments for indicating or recording the relationship between variables - Google Patents

Improvements in or relating to instruments for indicating or recording the relationship between variables

Info

Publication number
GB575008A
GB575008A GB2010143A GB2010143A GB575008A GB 575008 A GB575008 A GB 575008A GB 2010143 A GB2010143 A GB 2010143A GB 2010143 A GB2010143 A GB 2010143A GB 575008 A GB575008 A GB 575008A
Authority
GB
United Kingdom
Prior art keywords
lever
variables
proportional
bellows
mach
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
GB2010143A
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.)
GEOFFREY DEVAS EVERINGTON
Rosemount Measurement Ltd
Original Assignee
GEOFFREY DEVAS EVERINGTON
KDG Instruments 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 GEOFFREY DEVAS EVERINGTON, KDG Instruments Ltd filed Critical GEOFFREY DEVAS EVERINGTON
Priority to GB2010143A priority Critical patent/GB575008A/en
Publication of GB575008A publication Critical patent/GB575008A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

575,008. Mechanical relay and follow - up devices. K.D.G. INSTRUMENTS, Ltd., and EVERINGTON, G. D. Dec. 1, 1943, No. 20101. [Class 118 (ii)]. [Also in Group XIX] A required relationship between variables is measured by an instrument comprising a pivoted lever, means responsive to each of the variables to produce forces proportional thereto, means for applying these to the lever to produce turning moments thereon, external adjusting means to vary one of the moments to balance the lever, and means for measuring the adjustment made. In An instrument for use in aircraft, for indicating the " Mach " number and comprising a lever 10 pivoted at 11, a sylphon bellows 40 acts directly on the lever and a sylphon bellows 41 acts indirectly thereon through levers 47, 13 pivoted at 48, 14. When the balance is upset, one or other of the contacts 59, 60 is made to produce rotation of the motor 58 in the required direction to move lever 13 longitudinally to restore the balance. The corresponding " Mach " number is read on scale 37. The interiors of bellows 40, 41 are subjected to air stream pressure P and a vacuum respectively. The exterior of the bellows is subjected to static air pressure S. The variables are therefore P-S and S. The ratio P-S/S varies in accordance with a function of the "Mach " number M and is approximately proportional to M<2>. The length of the lever 13 equals the distance between the end of lever 47 and the pivot 11. If y is the distance between the ends of levers 47 and 13 and pivots 14 and 11 respectively, then P-S/S is proportional to ye. Adjustments of 13 are therefore proportional to M.
GB2010143A 1943-12-01 1943-12-01 Improvements in or relating to instruments for indicating or recording the relationship between variables Expired GB575008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2010143A GB575008A (en) 1943-12-01 1943-12-01 Improvements in or relating to instruments for indicating or recording the relationship between variables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2010143A GB575008A (en) 1943-12-01 1943-12-01 Improvements in or relating to instruments for indicating or recording the relationship between variables

Publications (1)

Publication Number Publication Date
GB575008A true GB575008A (en) 1946-01-30

Family

ID=10140398

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2010143A Expired GB575008A (en) 1943-12-01 1943-12-01 Improvements in or relating to instruments for indicating or recording the relationship between variables

Country Status (1)

Country Link
GB (1) GB575008A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537932A (en) * 1948-10-11 1951-01-09 Honeywell Regulator Co Linear force balance angle of attack sensing device
US2599288A (en) * 1947-01-17 1952-06-03 Norden Lab Corp True air-speed meter
US2598681A (en) * 1946-06-29 1952-06-03 Sperry Corp True air speed and true altitude rate meter
US2706407A (en) * 1949-03-28 1955-04-19 Bendix Aviat Corp Airspeed indicator
US2726545A (en) * 1950-05-16 1955-12-13 North American Aviation Inc Mach number deviation indicator
US2851230A (en) * 1953-01-05 1958-09-09 Hobson Ltd H M Mach number responsive control for aircraft fuel system
US2895333A (en) * 1954-09-07 1959-07-21 Bendix Aviat Corp Pressure responsive force-ratio balance apparatus
US2971336A (en) * 1952-03-15 1961-02-14 Bendix Corp Fuel feed and power control system for gas turbine engines having means for avoidingcompressor stall
US3320809A (en) * 1962-11-14 1967-05-23 Garrett Corp Linear servo absolute transducer

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598681A (en) * 1946-06-29 1952-06-03 Sperry Corp True air speed and true altitude rate meter
US2599288A (en) * 1947-01-17 1952-06-03 Norden Lab Corp True air-speed meter
US2537932A (en) * 1948-10-11 1951-01-09 Honeywell Regulator Co Linear force balance angle of attack sensing device
US2706407A (en) * 1949-03-28 1955-04-19 Bendix Aviat Corp Airspeed indicator
US2726545A (en) * 1950-05-16 1955-12-13 North American Aviation Inc Mach number deviation indicator
US2971336A (en) * 1952-03-15 1961-02-14 Bendix Corp Fuel feed and power control system for gas turbine engines having means for avoidingcompressor stall
US2851230A (en) * 1953-01-05 1958-09-09 Hobson Ltd H M Mach number responsive control for aircraft fuel system
US2895333A (en) * 1954-09-07 1959-07-21 Bendix Aviat Corp Pressure responsive force-ratio balance apparatus
US3320809A (en) * 1962-11-14 1967-05-23 Garrett Corp Linear servo absolute transducer

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