Miller JM-2
{{Short description|American homebuilt racing aircraft}}
{{Use mdy dates|date=January 2022}}
{{Use American English|date=January 2022}}
| {{Infobox aircraft begin
| name=JM-2 | image= | caption= }}{{Infobox aircraft type | national origin=United States | manufacturer=JW Miller Aviation | designer=Jim W Miller | first flight= | introduced= | retired= | status=Production completed | primary user= | more users= | produced= | number built= | developed from= | variants with their own articles=Miller-Bohannon JM-2 Pushy Galore }} |
The Miller JM-2 was an American Formula One Air Racing homebuilt aircraft that was designed by Jim W Miller and produced by JW Miller Aviation of Marble Falls, Texas. When it was available, the aircraft was supplied in the form of plans for construction by amateurs.Plane and Pilot: 1978 Aircraft Directory, page 147. Werner & Werner Corp, Santa Monica CA, 1977. {{ISBN|0-918312-00-0}}
Design and development
Miller opted for an unorthodox configuration in developing a racing aircraft that would be as fast as possible on {{convert|100|hp|kW|0|abbr=on}}. The JM-2 features a cantilever mid-wing, a single-seat enclosed open cockpit under a bubble canopy, tricycle landing gear with fixed main wheels and a retractable nose wheel, and a single engine in pusher configuration, mounted within a fan shroud, with the spinner acting as the aircraft's tailcone. The fan shroud structure provides a place to mount the rudders and the tailplane is mounted high in T-tail configuration as an extension of the shroud. There is a small canard surface mounted on the nose.{{cite web|url=http://aerofiles.com/_mi.html |title=American airplanes: Mi - Mu |publisher=Aerofiles |date=2001-02-04 |accessdate=2013-10-13}}
The aircraft is of mixed construction, with the fuselage made from four fiberglass panels and the {{convert|15.0|ft|m|1|abbr=on}} span wing covered in fiberglass and resin-reinforced honeycomb material. As required by the Formula One rules, the engine used was a {{convert|100|hp|kW|0|abbr=on}} Continental O-200B powerplant, the "B" being the pusher-configured version of the engine.
The JM-2 has an empty weight of {{convert|630|lb|kg|abbr=on}} and a gross weight of {{convert|1100|lb|kg|abbr=on}}, giving a useful load of {{convert|470|lb|kg|abbr=on}}. With full fuel of {{convert|12|u.s.gal}} the payload is {{convert|398|lb|kg|abbr=on}}.
The JM-2 was further developed into the one-of-a-kind racing aircraft, the Miller-Bohannon JM-2 Pushy Galore.{{cite web|url=http://www.airventuremuseum.org/collection/aircraft/Miller-Bohannon%20JM-2%20Pushy%20Galore.asp |title=Miller-Bohannon JM-2 Pushy Galore |publisher=Airventure Museum |year=2013 |accessdate=2013-10-13}}
Operational history
By October 2013, three examples had been registered in the United States with the Federal Aviation Administration including the sole Miller-Bohannon JM-2 Pushy Galore. None of the aircraft remain registered.{{cite web|url = http://registry.faa.gov/aircraftinquiry/AcftRef_Results.aspx?Mfrtxt=&Modeltxt=JM-2&PageNo=1|title = Make / Model Inquiry Results|accessdate = 13 October 2013|last = Federal Aviation Administration|date = 13 October 2013}}{{As of?|date=January 2024}}
One of the two stock JM-2s built was destroyed while racing in the Reno Air Races at Reno, Nevada on 15 September 1989, when it flew through a dust devil and broke up in flight, killing the pilot.{{cite web|url = http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=74M|title = N-Number Inquiry Results - N74M|accessdate = 13 October 2013|last = Federal Aviation Administration|date = 13 October 2013}}{{cite web|url =http://dms.ntsb.gov/aviation/AccidentReports/ssltatituwm5kh2pdh0oeu551/Y10132013120000.pdf|title = Brief of Accident|accessdate = 13 October 2013|last = National Transportation Safety Board|date = 26 June 1992}}
Specifications (JM-2)
{{Aircraft specs
|prime units?=imp
|genhide=
|crew=one
|capacity=
|length m=
|length ft=19
|length in=0
|length note=
|span m=
|span ft=15
|span in=0
|span note=
|height m=
|height ft=
|height in=
|height note=
|wing area sqm=
|wing area sqft=
|wing area note=
|aspect ratio=
|airfoil=
|empty weight kg=
|empty weight lb=630
|empty weight note=
|gross weight kg=
|gross weight lb=1100
|gross weight note=
|fuel capacity={{convert|12|u.s.gal}}
|more general=
|eng1 number=1
|eng1 name=Continental O-200B
|eng1 type=four cylinder, air-cooled, four stroke aircraft engine
|eng1 kw=
|eng1 hp=100
|prop blade number=4
|prop name=fan mounted in a ducted shroud
|prop dia m=
|prop dia ft=
|prop dia in=
|prop note=
|perfhide=
|max speed kmh=
|max speed mph=235
|max speed kts=
|max speed note=
|cruise speed kmh=
|cruise speed mph=190
|cruise speed kts=
|cruise speed note=
|stall speed kmh=
|stall speed mph=70
|stall speed kts=
|stall speed note=
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|range km=
|range miles=300
|range nmi=
|range note=
|endurance=
|ceiling m=
|ceiling ft=
|ceiling note=
|g limits=
|roll rate=
|glide ratio=
|climb rate ms=
|climb rate ftmin=1600
|climb rate note=
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|lift to drag=
|wing loading kg/m2=
|wing loading lb/sqft=
|wing loading note=
|power/mass=
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|avionics=
}}
References
{{reflist}}
External links
- [http://aerofiles.com/miller-jm2.jpg Photo of the stock JM-2 that later crashed at Reno]
Category:1970s United States sport aircraft
Category:Single-engined pusher aircraft
Category:Aircraft with fixed tricycle landing gear
Category:Single-engined piston aircraft