“Junkers Profly Ultima”的意思、由来-开放百科全书

The Junkers Profly Ultima is a German aerobatic homebuilt aircraft that was designed by Andre Konig and produced by Junkers Profly of Kodnitz, introduced in 1993. When it was available the aircraft was supplied as a kit for amateur construction.^[1]

Design and development

The Ultima features a cantilever low-wing, a two-seats-in-side-by-side configuration enclosed cockpit under a bubble canopy, fixed tricycle landing gear with wheel pants and a single engine in tractor configuration.^[1]

The aircraft's {{convert|8.2|m|ft|1|abbr=on}} span wing mounts flaps and has a wing area of {{convert|10.5|m2|sqft|abbr=on}}. The cabin width is {{convert|101|cm|in|abbr=on}}. The acceptable power range is {{convert|50|to|80|hp|kW|0|abbr=on}} and the standard engine used is the {{convert|80|hp|kW|0|abbr=on}} Rotax 912UL four stroke powerplant. For its aerobatic role the Ultima is stressed to +6 and -4 g.^[1]

The Ultima has a typical empty weight of {{convert|260|kg|lb|abbr=on}} and a gross weight of {{convert|450|kg|lb|abbr=on}}, giving a useful load of {{convert|190|lb|kg|abbr=on}}. With full fuel of {{convert|120|l}} the payload for pilot, passenger and baggage is just {{convert|103|kg|lb|abbr=on}}.^[1]

The manufacturer estimated the construction time from the supplied kit as 400 hours.^[1]

Specifications (Ultima)

|genhide=
|crew=one
|capacity=one passenger
|length m=
|length ft=19.69
|length in=
|length note=
|span m=
|span ft=26.90
|span in=
|span note=
|height m=
|height ft=
|height in=
|height note=
|wing area sqm=
|wing area sqft=113.0
|wing area note=
|aspect ratio=
|airfoil=
|empty weight kg=
|empty weight lb=573
|empty weight note=
|gross weight kg=
|gross weight lb=992
|gross weight note=
|fuel capacity={{convert|120|l}}
|more general=

|perfhide=
|max speed kmh=
|max speed mph=162
|max speed kts=
|max speed note=
|cruise speed kmh=
|cruise speed mph=130
|cruise speed kts=
|cruise speed note=
|stall speed kmh=
|stall speed mph=40
|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=700
|range nmi=
|range note=
|endurance=
|ceiling m=
|ceiling ft=16400
|ceiling note=
|g limits=+6/-4
|roll rate=
|glide ratio=
|climb rate ms=
|climb rate ftmin=
|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=8.8
|wing loading note=
|power/mass=
|thrust/weight=
|more performance=
|avionics=
}}

Design and development

Specifications (Ultima)

See also

References