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GB1195994A - Improvements in Fluidics. - Google Patents

Improvements in Fluidics.

Info

Publication number
GB1195994A
GB1195994A GB3735367A GB3735367A GB1195994A GB 1195994 A GB1195994 A GB 1195994A GB 3735367 A GB3735367 A GB 3735367A GB 3735367 A GB3735367 A GB 3735367A GB 1195994 A GB1195994 A GB 1195994A
Authority
GB
United Kingdom
Prior art keywords
pressures
input
fed
orifices
impact
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
GB3735367A
Inventor
David Terence Tiley
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB3735367A priority Critical patent/GB1195994A/en
Publication of GB1195994A publication Critical patent/GB1195994A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/002—Circuit elements having no moving parts for controlling engines, turbines, compressors (starting, speed regulation, temperature control or the like)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B5/00—Transducers converting variations of physical quantities, e.g. expressed by variations in positions of members, into fluid-pressure variations or vice versa; Varying fluid pressure as a function of variations of a plurality of fluid pressures or variations of other quantities

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Turbines (AREA)

Abstract

1,195,994. Jet propulsion engines. ROLLSROYCE Ltd. Nov. 12, 1968 [Aug. 15, 1967], No. 37353/67. Heading F1J. [Also in Division G2-3] A fluidic servomotor control system maintains a constant ratio between the compressor delivery pressure P 3 and the jet pipe pressure P J in a gas turbine jet engine, by comparing these pressures in a comparitor circuit, Fig. 8 (Fig. 10 not shown), and feeding the differential output pressures P A , P B into a motor circuit, Fig. 11 or 12 (not shown) to alter the position of flaps 29, Fig. 7 (not shown) which vary the cross sectional area of the final nozzle of the jet pipe. A pair of series connected orifices 32, 33 form a potentiometer feeding input nozzle 34 of an impact modulator 35 the other input 42 of which is paralleled with the input 43 of another impact modulator 38. Inputs 42, 43 are fed through an orifice 40 and this dimension of the three orifices are selected so that for a predetermined ratio P J : P 3 pressures P A and P B are equal. In the modification of Fig. 10 (not shown) the feeder to the impact modulators are changed but the relationship between the pressures remain unaltered. Pressures P A and P B are fed to the motor circuits to unbalance either a spool valve (100 Fig. 11), or a vortex amplifier bridge circuit (126-129 Fig. 12), which controls an actuator connected to the control flaps (29),
GB3735367A 1967-08-15 1967-08-15 Improvements in Fluidics. Expired GB1195994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3735367A GB1195994A (en) 1967-08-15 1967-08-15 Improvements in Fluidics.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3735367A GB1195994A (en) 1967-08-15 1967-08-15 Improvements in Fluidics.

Publications (1)

Publication Number Publication Date
GB1195994A true GB1195994A (en) 1970-06-24

Family

ID=10395816

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3735367A Expired GB1195994A (en) 1967-08-15 1967-08-15 Improvements in Fluidics.

Country Status (1)

Country Link
GB (1) GB1195994A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557295A (en) * 1979-11-09 1985-12-10 The United States Of America As Represented By The Secretary Of The Army Fluidic mud pulse telemetry transmitter
GB2218826A (en) * 1988-05-19 1989-11-22 Atomic Energy Authority Uk Fluidic devices
GB2355543A (en) * 1999-10-20 2001-04-25 Univ Sheffield Fluidic flow control and fluidic device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557295A (en) * 1979-11-09 1985-12-10 The United States Of America As Represented By The Secretary Of The Army Fluidic mud pulse telemetry transmitter
GB2218826A (en) * 1988-05-19 1989-11-22 Atomic Energy Authority Uk Fluidic devices
GB2355543A (en) * 1999-10-20 2001-04-25 Univ Sheffield Fluidic flow control and fluidic device

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees