| 词条 | Nelson H-44 | |||||||||||||||
| 释义 |
The Nelson H-44 is an American single ignition, four-cylinder, horizontally opposed, direct drive, two-stroke aircraft engine that was developed by the Nelson Engine Company for use in motorgliders.[1] Design and developmentThe H-44 was designed in the period following the Second World War and a specially designed motor glider was created by Hawley Bowlus to utilize the engine, the Bowlus/Nelson Dragonfly.[1] The engine was not certified. Under the CAR 5 regulations then in place in the USA for gliders, a certified auxiliary power glider could be flown with a non-certified engine and propeller. The engine is instead described on the Dragonfly type certificate.[1] The four-cylinder engine runs on a 12:1 mixture of 80 octane gasoline and SAE 30 oil. It is equipped with a single Carter WA1 carburetor and a recoil starter.[1] Operational historyEmployed in the Dragonfly the H-44 proved underpowered, which led to the design of the H-49 version. The engine family was not a success and few were produced.[2][3] Variants
Original design with a {{convert|2.25|in|mm|0|abbr=on}} bore and {{convert|2.75|in|mm|0|abbr=on}} stroke, producing {{convert|25|hp|kW|0|abbr=on}} at 3900 rpm.[1]
Upgraded design with E-225 cylinders giving a {{convert|2.375|in|mm|0|abbr=on}} bore and {{convert|2.75|in|mm|0|abbr=on}} stroke, producing {{convert|28|hp|kW|0|abbr=on}} at 4000 rpm.[1] Applications
Specifications (H-44){{pistonspecs||ref=FAA Type Certificate Data Sheet[1] |type=Four-cylinder, two-stroke, single-ignition aircraft engine |bore={{convert|2.25|in|mm|0|abbr=on}} |stroke={{convert|2.75|in|mm|0|abbr=on}} |displacement=44 cubic inches |length= |diameter= |width= |height= |weight={{convert|40|lb|kg|0|abbr=on}} |valvetrain= |supercharger= |turbocharger= |fuelsystem=Carter WA1 carburetor |fueltype=80 octane gasoline |oilsystem=premixed oil in fuel, SAE 30 oil mixed at 12:1 fuel to oil |coolingsystem=air |power={{convert|25|hp|kW|0|abbr=on}} at 3900 rpm |specpower= |compression=9:1 |fuelcon= |specfuelcon= |oilcon= |power/weight= |designer=Ted Nelson |reduction_gear=none |general_other= |components_other= |performance_other= }} See also{{aircontent|see also=
|related= |similar aircraft= |lists= }} References1. ^1 2 3 4 5 6 {{Cite web|url = http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/8db86e618c946c038525673c00665b17/$FILE/ATTRYH3Y/GTC19.pdf|title = Aircraft Type Certificate Data Sheet GTC19 |accessdate = 10 March 2011|last = Federal Aviation Administration|authorlink = |date=April 1947}} {{Nelson Aircraft}}2. ^1 {{Cite web|url = http://www.sailplanedirectory.com/PlaneDetails.cfm?PlaneID=92|title = Dragonfly Bowlus Nelson|accessdate = 10 March 2011|last = Activate Media|authorlink = |year = 2006|deadurl = yes|archiveurl = https://web.archive.org/web/20110715225238/http://www.sailplanedirectory.com/PlaneDetails.cfm?PlaneID=92|archivedate = 15 July 2011|df = }} 3. ^1 Said, Bob: 1983 Sailplane Directory, Soaring Magazine, page 118. Soaring Society of America, November 1983. USPS 499-920 3 : Air-cooled aircraft piston engines|Nelson aircraft engines|Two-stroke aircraft piston engines |
|||||||||||||||
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。