“Coelho AC-11”的意思、由来-开放百科全书

The Coelho AC-11 (also called the AC.11 and AC 11) is a Brazilian homebuilt aircraft that was designed and produced by Altair Coelho of Eldorado do Sul and introduced in 1994. The aircraft was intended to be supplied as a kit for amateur construction, but only one was completed.^[1]^[2]

Design and development

The aircraft features a V-strut-braced low-wing, a two-seats-in-side-by-side configuration enclosed cockpit, fixed tricycle landing gear or optionally conventional landing gear and a single engine in tractor configuration.^[1]

The aircraft fuselage is made from welded steel tube, while the wing is plywood, with some surfaces covered in doped aircraft fabric and some covered in plywood. Its {{convert|8.08|m|ft|1|abbr=on}} span wing has a wing area of {{convert|13.7|m2|sqft|abbr=on}} and employs a NACA 4412 airfoil. The cabin width is {{convert|108|cm|in|abbr=on}}. The acceptable power range is {{convert|70|to|105|hp|kW|0|abbr=on}} and the engine used for the prototype was a {{convert|2000|cc|cuin|1|abbr=on}} {{convert|105|hp|kW|0|abbr=on}} Volkswagen air-cooled engine with a steel-pulley and polyurethane chain-driven 2:1 reduction drive.^[1]^[2]

The aircraft has a typical empty weight of {{convert|290|kg|lb|abbr=on}} and a gross weight of {{convert|520|kg|lb|abbr=on}}, giving a useful load of {{convert|230|kg|lb|abbr=on}}. With full fuel of {{convert|76|l}} the payload for pilot, passenger and baggage is {{convert|109|kg|lb|abbr=on}}.^[1]

The standard day, sea level, no wind, take off with a {{convert|105|hp|kW|0|abbr=on}} engine is {{convert|140|m|ft|0|abbr=on}} and the landing roll is {{convert|200|m|ft|0|abbr=on}}.^[1]

The manufacturer estimated the construction time of the prototype as 1600 hours.^[2]

Operational history

By 1998 the company reported that one conventional gear version of the aircraft was completed and flying, while a tricycle gear version was under construction.^[1]^[2]

Specifications (AC-11)

|genhide=
|crew=one
|capacity=one passenger
|length m=
|length ft=19
|length in=0
|length note=
|span m=
|span ft=26
|span in=6
|span note=
|height m=
|height ft=
|height in=
|height note=
|wing area sqm=
|wing area sqft=147
|wing area note=
|aspect ratio=
|airfoil=
|empty weight kg=
|empty weight lb=639
|empty weight note=
|gross weight kg=
|gross weight lb=1146
|gross weight note=
|fuel capacity={{convert|76|l}}
|more general=

|eng1 number=1
|eng1 name=Volkswagen air-cooled engine
|eng1 type=four cylinder, {{convert|2000|cc|cuin|1|abbr=on}}, four stroke automotive conversion, with a steel-pulley and polyurethane chain-driven 2:1 reduction drive
|eng1 kw=
|eng1 hp=105
|prop blade number=2
|prop name=wooden fixed pitch
|prop dia m=
|prop dia ft=
|prop dia in=
|prop note=

|perfhide=
|max speed kmh=
|max speed mph=105
|max speed kts=
|max speed note=
|cruise speed kmh=
|cruise speed mph=95
|cruise speed kts=
|cruise speed note=
|stall speed kmh=
|stall speed mph=42
|stall speed kts=
|stall speed note=in clean configuration
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|range km=
|range miles=340
|range nmi=
|range note=
|endurance=
|ceiling m=
|ceiling ft=
|ceiling note=
|g limits=
|roll rate=
|glide ratio=
|climb rate ms=
|climb rate ftmin=920
|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=7.8
|wing loading note=
|power/mass=
|thrust/weight=
|more performance=
|avionics=
}}

References

1. ^¹²³⁴⁵⁶Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition, page 344. BAI Communications, 15 July 1998. {{ISBN|0-9636409-4-1}}
2. ^¹²³Altair Coelho, AC 11, retrieved 14 April 2015

External links