Turbomeca Turmo
The Turbomeca Turmo is a family of French turboshaft engines manufactured for helicopter use. Developed from the earlier Turbomeca Artouste, later versions delivered up to Template:Cvt. A turboprop version was developed for use with the Bréguet 941 transport aircraft.
Current versions are built in partnership with Rolls-Royce, and the engine is produced under licence by the Chinese Changzhou Lan Xiang Machinery Works as the WZ-6 and Romanian Turbomecanica, Bucharest, as the Turmo IV-CA.
Design and development
The Turmo was initially developed with a single-stage centrifugal compressor, annular combustion chamber and single stage turbine. Power output was from a single-stage free power turbine and was initially Template:Cvt.[1]
During early post-war helicopter development, the use of cold and hot rotor tip-jets was widely investigated. To provide large mass-flow air for efficient operation of the tip-jets, Turbomeca developed a gas turbine driven gas producer, powered by the free power-turbine of the Turmo to deliver the required gas flow.[1]
Variants
Data from:-Jane's all the World's Aircraft 1957–58[1]
- Turmo I
- The initial version of the Turmo; max continuous gearbox output Template:Cvt at 3,000 rpm, at 33,750 rpm gas generator speed.
- Turmo II
- Developed version of the Turmo I; max continuous gearbox output Template:Cvt at 34,000 rpm gas generator speed.
- Turmo III
- With 2-stage free power-turbine, pressure ratio 5.7:1 ;Maximum shaft output Template:Cvt, max continuous Template:Cvt at 33,400 rpm
- Turmo IIIB
- Turmo IIIC
- A Script error: No such module "convert". turboshaft powering the Sud-Aviation Frelon prototypes.
- Turmo IIIC2
- Developed from the IIIC delivering Script error: No such module "convert". maximum output
- Turmo IIIC3
- Maximum rating Script error: No such module "convert". at 33,500 rpm for production Super Frelon helicopters
- Turmo IIIC4
- Military variant.
- Turmo IIIC5
- Turmo IIIC6
- Turmo IIIC7
- Turmo IIID
- Turboprop for the proposed Breguet Br 942 STOL transport, maximum rating Script error: No such module "convert"..
- Turmo IIID2
- Script error: No such module "convert". at 22,460 free turbine rpm
- Turmo IIID3
- Script error: No such module "convert". at 33,500 rpm
- Turmo IIIF
- Script error: No such module "convert". at 32,100 rpm for use on Turbotrain and Turboliner[2]
- Turmo IVB
- Military Variant
- Turmo IVC
- Civil Variant
- Turmo IV-CA
- Licence production in Romania
- Turmo VI
- Turboprop engine with two axial stages, one centrifugal compressor stage and two free power turbine stages, rated at Script error: No such module "convert". at 32,000 rpm.
- Turmo XII
- Script error: No such module "convert". for use on Class T 2000 Turbotrain and TGV 001.[3]
- WZ-6
- Licence production at the Changzhou Lan Xiang Machinery Works in the People's Republic of China.
Applications
- Turboshaft
- Sud-Est SE.3140 Alouette II
- Aérospatiale SA 321 Super Frelon
- Aérospatiale SA 330 Puma
- Bölkow Bo 46
- IAR 330
- SNCASE SE.3200 Frelon
- N.300 Naviplane
- Turboprop
- Automobile
- Train
Specifications (Turmo IIIC7)
Data from Flight International.[4]
General characteristics
- Type: Two-shaft turboshaft
- Length: Template:Cvt
- Diameter: Template:Cvt
- Dry weight: Template:Cvt
Components
- Compressor: Single-stage axial, single-stage centrifugal
- Combustors: Annular, reverse-flow
- Turbine: Two-stage compressor turbine, two-stage power turbine
Performance
- Maximum power output: Template:Cvt
- Overall pressure ratio: 5.9:1
- Air mass flow: Template:Cvt
- Power-to-weight ratio: Template:Cvt
See also
Related development
Related lists
References
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- ↑ a b c d Script error: No such module "citation/CS1".
- ↑ Garde, M. R. (13 December 1974). Gas Turbine Train Development in France (PDF). Paper Number 75-GT-122. The American Society of Mechanical Engineers. p. 3
- ↑ Garde, M. R. (13 December 1974). Gas Turbine Train Development in France (PDF). Paper Number 75-GT-122. The American Society of Mechanical Engineers. p. 7, 8
- ↑ Script error: No such module "Citation/CS1".
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Further reading
- Script error: No such module "citation/CS1".
External links
Template:Turbomeca aeroengines Template:People's Republic of China military aeroengines