GB1072145A - Fluid flow machine for exampls a gas turbine engine or lift fan - Google Patents

Fluid flow machine for exampls a gas turbine engine or lift fan

Info

Publication number
GB1072145A
GB1072145A GB1376465A GB1376465A GB1072145A GB 1072145 A GB1072145 A GB 1072145A GB 1376465 A GB1376465 A GB 1376465A GB 1376465 A GB1376465 A GB 1376465A GB 1072145 A GB1072145 A GB 1072145A
Authority
GB
United Kingdom
Prior art keywords
blades
rotor
stator
gas turbine
rotor blades
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
GB1376465A
Inventor
Robert Bridge
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 GB1376465A priority Critical patent/GB1072145A/en
Priority to DE19661476877 priority patent/DE1476877B2/en
Publication of GB1072145A publication Critical patent/GB1072145A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/26—Antivibration means not restricted to blade form or construction or to blade-to-blade connections or to the use of particular materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1,072,145. Gas turbine engines; axial-flow fans and compressors. ROLLS ROYCE Ltd. March 11, 1966 [March 31, 1965], No. 13764/65. Headings F1C, F1G and F1T. [Also in Division F2] In a fluid flow machine, for example a compressor or a turbine of a gas turbine engine, having at least one stage of adjacently disposed stator vanes and rotor blades, the ratio of the number of stator vanes to the number of rotor blades in the or each stage is given by 1À1n (1 + M) where n is the number of the harmonic which it is desired to eliminate together with any lower harmonies, and M is the rotor blade tip Mach. number at the speed up to which the desired elimination is required, M being calculated in relation to the medium in which the rotor is working. In the gas turbine engine shown the compressor has two rows of stator blades 16 and 18 with a row of rotor blades 17 there-between, there being nineteen blades in the rotor blade row 17. The Mach. number (M) of the tip speed of the rotor blades 17 at the speed for which it is desired to eliminate the fundamental harmonic is 0À8 so substituting in the formula the required ratio of the stator blades 16 to rotor blades 17 is (1À1) (1) (1À8) =1À98 so that the number of stator blades required is (1À98) (19) = 37À6. The number of blades was thus 38 in both stator blade rows 16 and 18, the most suitable angular disposition being found by experiment. The rotor blades may be formed with a hollow internal cavity and apertures by which boundary layer suction may be applied thus tending to remove wakes and turbulence.
GB1376465A 1965-03-31 1965-03-31 Fluid flow machine for exampls a gas turbine engine or lift fan Expired GB1072145A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1376465A GB1072145A (en) 1965-03-31 1965-03-31 Fluid flow machine for exampls a gas turbine engine or lift fan
DE19661476877 DE1476877B2 (en) 1965-03-31 1966-03-24 Turbo machine, in particular gas turbine jet engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1376465A GB1072145A (en) 1965-03-31 1965-03-31 Fluid flow machine for exampls a gas turbine engine or lift fan

Publications (1)

Publication Number Publication Date
GB1072145A true GB1072145A (en) 1967-06-14

Family

ID=10028949

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1376465A Expired GB1072145A (en) 1965-03-31 1965-03-31 Fluid flow machine for exampls a gas turbine engine or lift fan

Country Status (2)

Country Link
DE (1) DE1476877B2 (en)
GB (1) GB1072145A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2259334A (en) * 1991-09-06 1993-03-10 Gen Electric Low noise fan assembly.
US7806651B2 (en) 2004-04-02 2010-10-05 Mtu Aero Engines Gmbh Method for designing a low-pressure turbine of an aircraft engine, and low-pressure turbine
WO2014159206A1 (en) 2013-03-14 2014-10-02 United Technologies Corporation Low noise turbine for geared gas turbine engine
WO2014186017A2 (en) 2013-03-13 2014-11-20 United Technologies Corporation Low noise compressor for geared gas turbine engine
US11719161B2 (en) 2013-03-14 2023-08-08 Raytheon Technologies Corporation Low noise turbine for geared gas turbine engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014009735B4 (en) 2014-07-02 2021-07-15 Rosswag Gmbh Impeller of a turbomachine
DE102014012480B4 (en) 2014-08-27 2016-06-09 Rosswag Gmbh Manufacturing process for a blading of a turbomachine, blading a turbomachine and impeller

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2681099A1 (en) * 1991-09-06 1993-03-12 Gen Electric MOUNTING A LOW NOISE BLOWER.
GB2259334B (en) * 1991-09-06 1995-05-24 Gen Electric Low noise fan assembly
GB2259334A (en) * 1991-09-06 1993-03-10 Gen Electric Low noise fan assembly.
US7806651B2 (en) 2004-04-02 2010-10-05 Mtu Aero Engines Gmbh Method for designing a low-pressure turbine of an aircraft engine, and low-pressure turbine
US10337407B2 (en) 2013-03-13 2019-07-02 United Technologies Corporation Low noise compressor for geared gas turbine engine
EP4163479A1 (en) * 2013-03-13 2023-04-12 Raytheon Technologies Corporation Low noise compressor for geared gas turbine engine
WO2014186017A2 (en) 2013-03-13 2014-11-20 United Technologies Corporation Low noise compressor for geared gas turbine engine
EP2971658A4 (en) * 2013-03-13 2016-11-16 United Technologies Corp Low noise compressor for geared gas turbine engine
EP2971512A4 (en) * 2013-03-14 2016-11-09 United Technologies Corp Low noise turbine for geared gas turbine engine
US10533447B2 (en) 2013-03-14 2020-01-14 United Technologies Corporation Low noise turbine for geared gas turbine engine
US10605172B2 (en) 2013-03-14 2020-03-31 United Technologies Corporation Low noise turbine for geared gas turbine engine
US11143109B2 (en) 2013-03-14 2021-10-12 Raytheon Technologies Corporation Low noise turbine for geared gas turbine engine
US11560849B2 (en) 2013-03-14 2023-01-24 Raytheon Technologies Corporation Low noise turbine for geared gas turbine engine
WO2014159206A1 (en) 2013-03-14 2014-10-02 United Technologies Corporation Low noise turbine for geared gas turbine engine
US11719161B2 (en) 2013-03-14 2023-08-08 Raytheon Technologies Corporation Low noise turbine for geared gas turbine engine

Also Published As

Publication number Publication date
DE1476877B2 (en) 1970-10-01
DE1476877A1 (en) 1970-02-12

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