GB1141125A - A gas turbine engine installation - Google Patents

A gas turbine engine installation

Info

Publication number
GB1141125A
GB1141125A GB1149267A GB1149267A GB1141125A GB 1141125 A GB1141125 A GB 1141125A GB 1149267 A GB1149267 A GB 1149267A GB 1149267 A GB1149267 A GB 1149267A GB 1141125 A GB1141125 A GB 1141125A
Authority
GB
United Kingdom
Prior art keywords
smoke
exhaust gases
engine
detector
amplifier
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
GB1149267A
Inventor
Brian Toone
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 GB1149267A priority Critical patent/GB1141125A/en
Priority to FR1556072D priority patent/FR1556072A/fr
Publication of GB1141125A publication Critical patent/GB1141125A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration

Landscapes

  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1,141,125. Automatic smoke density control. ROLLS-ROYCE Ltd. May 5, 1967 [March 10, 1967], No.11492/67. Heading G3R. [Also in Division G1] A photo-electric smoke detector is used to measure the density of smoke in the exhaust gases of a gas turbine engine. A sample of exhaust gases is fed through an internally blackened sample chamber 1, through which light from source 5 is directed to an infrared sensitive photo-cell 8. The radiation is chopped by a rotating sector-vaned chopper 6. The detector output is amplified at 9 and 10 and indicated on meter 11, which may be calibrated, using a wire 12 of known diameter, in arbitrary units of known equivalence to smoke density. The detector circuitry is detailed in Figs. 2 and 3 (not shown). A double triode connected as a longtailed pair is used for the pre-amplifier 9 and a double triode used as a push pull amplifier 10. The amplifier output is rectified and applied to a bridge circuit, comprising two halves of a double triode and resistors in the triode cathode circuits, the microammeter 11 being connected across the bridge. Sensitivity and meter range are adjustable. The sample of exhaust gases may be obtained from an engine under test when it is obtained from the jet pipe, a silencer or detuner, or from the jet pipe of an engine actually installed on the aircraft. The detector output can be used to control fuel-air ratio in the engine or the supply of a smoke-reducing additive to the exhaust gases.
GB1149267A 1967-03-10 1967-03-10 A gas turbine engine installation Expired GB1141125A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1149267A GB1141125A (en) 1967-03-10 1967-03-10 A gas turbine engine installation
FR1556072D FR1556072A (en) 1967-03-10 1968-03-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1149267A GB1141125A (en) 1967-03-10 1967-03-10 A gas turbine engine installation

Publications (1)

Publication Number Publication Date
GB1141125A true GB1141125A (en) 1969-01-29

Family

ID=9987249

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1149267A Expired GB1141125A (en) 1967-03-10 1967-03-10 A gas turbine engine installation

Country Status (2)

Country Link
FR (1) FR1556072A (en)
GB (1) GB1141125A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0029537A1 (en) * 1979-11-14 1981-06-03 Carrier Corporation Monitoring entrained particulate matter in a gas stream
WO1995017664A1 (en) * 1993-12-22 1995-06-29 Robert Bosch Gmbh Device for determining density and concentration of visible constituents in fluids
GB2428087A (en) * 2005-07-07 2007-01-17 Rolls Royce Plc Monitoring arrangement for monitoring gas constituents in exhaust flow of gas turbine engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0029537A1 (en) * 1979-11-14 1981-06-03 Carrier Corporation Monitoring entrained particulate matter in a gas stream
WO1995017664A1 (en) * 1993-12-22 1995-06-29 Robert Bosch Gmbh Device for determining density and concentration of visible constituents in fluids
GB2428087A (en) * 2005-07-07 2007-01-17 Rolls Royce Plc Monitoring arrangement for monitoring gas constituents in exhaust flow of gas turbine engine
US7497073B2 (en) 2005-07-07 2009-03-03 Rolls-Royce Plc Engine monitoring
GB2428087B (en) * 2005-07-07 2009-12-23 Rolls Royce Plc A gas turbine engine incorporating an engine monitoring arrangement for monitoring gas constituents in an exhaust flow

Also Published As

Publication number Publication date
FR1556072A (en) 1969-01-31

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