| 词条 | Mathis Vega 42 | |||||||||||||||
| 释义 |
The Mathis Vega 42 was a 42-cylinder 7-bank in-line radial piston engine, designed and built in France, by Société Mathis Aviation in the late 1930s, with development continuing during and after WWII. Design and developmentÉmile E. C. Mathis had begun designing and producing motor-cars from 1910. Société Mathis Aviation, formed in 1937, began designing aircraft engines, initially with the large and complex Vega.[1] The Vega (and the similar Vesta) had a 2-piece Aluminium-alloy crankcase, 7 Aluminium-alloy cylinder blocks, with one-piece Aluminium-alloy heads and steel cylinder liners. A 12-throw crankshaft ran in 7 plain bearings[1].[1] Development continued after the war, culminating in the {{cvt|119.4|l|cuin}} {{cvt|5000|hp|order=flip}} Vesta 42, which didn't reach the hardware stage before Mathis closed its doors.[1] Operational historyThe Vega engines were run on test-beds, and some sources indicate the engine was flown 100 hours in a test bed aircraft during 1939, but no details of flight testing survive.[1] Variants
Specifications (42E-00){{pistonspecs||ref=Old Machine Press: Mathis Vega 42-Cylinder Aircraft Engine[2], Aircraft engines of the World 1946[3] |type=42 cylinder in-line radial engine (7 banks of six in-line) |bore={{cvt|125|mm|2}} |stroke={{cvt|115|mm|2}} |displacement={{cvt|59.3|l|cuin}} |length={{cvt|1520|mm|2}} |diameter={{cvt|1070|mm|2}} |width= |height= |weight={{cvt|1180|kg}} |valvetrain=1 exhaust and 1 inlet valve per cylinder driven by 7x single overhead camshafts (SOHC) |supercharger=Gear-driven single-stage driven at 5.53:1, with automatic boost control. |turbocharger= |fuelsystem=1x Zenith 160 2-barrel downdraught carburetor |fueltype=100/130 Octane aviation gasolene |oilsystem=Pressure feed at {{cvt|100|psi|order=flip}}, dry sump using {{cvt|25.1|cs}} viscosity oil |coolingsystem=liquid-cooled |power=Take-off:{{cvt|2800|hp|order=flip}} at 3,200 rpm at {{cvt|1.2|m}} +8.6lb boost Normal:{{cvt|2300|hp|order=flip}} at 3,000 rpm at {{cvt|2000|m}} Cruising:{{cvt|1700|hp|order=flip}} at 2,500 rpm at {{cvt|2000|m}} |specpower={{cvt|0.77|hp/cuin|kW/l|order=flip}} |compression=6.5 |fuelcon= |specfuelcon={{cvt|0.48|lb/hp|kg/kW|3|order=flip}} per hour, cruising |oilcon={{cvt|0.018|lb/hp|kg/kW|3|order=flip}} per hour, cruising |power/weight={{cvt|0.93|lb/hp|kg/kW|order=flip}} |designer= |reduction_gear=Epicyclic bevel reduction gear at 0.42:1 |general_other=*Maximum Brake Mean Effective Power (b.m.e.p.) {{cvt|13.4|kg/cm2}} |components_other= |performance_other= }}{{aircontent |see also= |related= |similar aircraft= |lists= }} See also
References1. ^(note:this seems odd as there is a odd number of banks) 2. ^1 2 3 4 5 6 7 8 {{cite web |last1=Pearce |first1=William |title=Mathis Vega 42-Cylinder Aircraft Engine |url=https://oldmachinepress.com/2018/12/05/6000/ |website=Old Machine Press |accessdate=5 December 2018 |language=en |date=5 December 2018}} 3. ^1 {{cite book |last=Wilkinson |first=Paul H. |title=Aircraft engines of the World 1946 |year=1946 |publisher=Sir Isaac Pitman & Sons Ltd. |location=London |edition=4th |pages=244-245}} Further reading
External links
4 : Inline radial engines|Aircraft piston engines 1930–1939|Water-cooled radial engines|Inline radial engines |
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