Frontier MD-II
{{Short description|American homebuilt aircraft}}
{{Use mdy dates|date=January 2022}}
{{Use American English|date=January 2022}}
| {{Infobox aircraft begin
| name=MD-II | image=Frontier MD-II.JPG | caption= }}{{Infobox aircraft type | type=Homebuilt aircraft | national origin=United States | manufacturer=Frontier Aircraft Inc | designer= | first flight= | introduced=1990s | retired= | status=Production completed | primary user= | more users= | produced= | number built=2 | developed from= | variants with their own articles= }} |
The Frontier MD-II was an American homebuilt aircraft that was designed and supplied as a kit by Frontier Aircraft Inc of Vail, Colorado, introduced in the 1990s.Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition, page 167. BAI Communications, 15 July 1998. {{ISBN|0-9636409-4-1}}
Design and development
The MD-II featured a strut-braced high-wing, a two-seats-in-side-by-side configuration enclosed cockpit accessed via doors, fixed conventional landing gear with wheel pants and a single tractor engine.
The aircraft was fabricated from 2024-T3 aluminum sheet. Its {{convert|29.50|ft|m|1|abbr=on}} span wing employed a USA 35B airfoil, mounted flaps and had an area of {{convert|177.0|sqft|m2|abbr=on}}. The cabin width was {{convert|41|in|cm|abbr=on}}. The acceptable power range was {{convert|65|to|200|hp|kW|0|abbr=on}} and the standard powerplant used was the {{convert|140|hp|kW|0|abbr=on}} Avia M 332 (LOM) four cylinder, inverted, air-cooled, supercharged, inline aircraft engine.
With the Avia engine the MD-II had a typical empty weight of {{convert|1150|lb|kg|abbr=on}} and a gross weight of {{convert|2000|lb|kg|abbr=on}}, giving a useful load of {{convert|850|lb|kg|abbr=on}}. With full fuel of {{convert|43|u.s.gal}} the payload for pilot, passenger and baggage was {{convert|592|lb|kg|abbr=on}}.
The manufacturer estimated the construction time from the supplied kit at 1500 hours.
Operational history
By 1998, the company reported two kits had been sold with two aircraft complete and flying.
In December 2013, no examples were registered with the US Federal Aviation Administration.{{cite web|url = http://registry.faa.gov/aircraftinquiry/AcftRef_Results.aspx?Mfrtxt=&Modeltxt=MD-II&PageNo=1|title = Make / Model Inquiry Results|accessdate = 28 December 2013|last = Federal Aviation Administration|date = 28 December 2013}}
Specifications (MD-II)
{{Aircraft specs
|prime units?=imp
|genhide=
|crew=one
|capacity=one passenger
|length m=
|length ft=27
|length in=6
|length note=
|span m=
|span ft=29
|span in=6
|span note=
|height m=
|height ft=
|height in=
|height note=
|wing area sqm=
|wing area sqft=177.0
|wing area note=
|aspect ratio=
|airfoil=USA 35B
|empty weight kg=
|empty weight lb=1150
|empty weight note=
|gross weight kg=
|gross weight lb=2000
|gross weight note=
|fuel capacity={{convert|43|u.s.gal}}
|more general=
|eng1 number=1
|eng1 name=Avia M 332
|eng1 type=four cylinder, inverted, air-cooled, supercharged, inline aircraft engine
|eng1 kw=
|eng1 hp=140
|prop blade number=1
|prop name=metal
|prop dia m=
|prop dia ft=
|prop dia in=
|prop note=
|perfhide=
|max speed kmh=
|max speed mph=184
|max speed kts=
|max speed note=
|cruise speed kmh=
|cruise speed mph=140
|cruise speed kts=
|cruise speed note=
|stall speed kmh=
|stall speed mph=30
|stall speed kts=
|stall speed note=flaps down
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|range km=
|range miles=690
|range nmi=
|range note=
|endurance=
|ceiling m=
|ceiling ft=16000
|ceiling note=
|g limits=
|roll rate=
|glide ratio=
|climb rate ms=
|climb rate ftmin=1200
|climb rate note=
|time to altitude=
|sink rate ms=
|sink rate ftmin=
|sink rate note=
|lift to drag=
|wing loading kg/m2=
|wing loading lb/sqft=11.3
|wing loading note=
|power/mass=
|thrust/weight=
|more performance=
|avionics=
}}