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Ruschmeyer R 90

释义

Design and development
MF-85 R 90
Variants
Specifications (R 90-230 RG)
References
External links

name= Ruschmeyer R 90

image=Ruschmeyer R90 D-EEHX Flugzeug.jpg

caption=
}}{{Infobox Aircraft Type

type = Light touring aircraft

national origin =Germany

manufacturer = Ruschmeyer Luftfahrttechnik

designer =

first flight = 8 August 1988 (MF-85)

introduction =

retired =

status =

primary user =

more users =

produced =

number built = MF-85:3 ; R-90:~30^[1]

program cost =

unit cost =

developed from = Ruschmeyer MF-85

variants with their own articles =
}}

The Ruschmeyer R 90-230 RG is a four-seat light aircraft designed and produced in Germany in the late 1980s and early 1990s.

Design and development

MF-85

Ruschmeyer Luftfahrttechnik initially designed the Ruschmeyer MF-85, intended to be powered by Porsche PFM 3200 derivatives, which was debuted at the 1987 Hannover Air Show. The MF-85 was a composite four seat aircraft, planned to be offered with {{convert|180|to|245|hp|kW|abbr=on|disp=flip}} engines, priced at DM245,000 to DM325,000 (excluding avionics), with optional fixed or retractable undercarriage.

The prototype (V001 D-EEHE) first flew with a {{convert|212|hp|kW|abbr=on}} Porsche PFM 3200N, driving a 3-bladed Mühlbauer MTV.9 constant speed propeller, on 8 August 1988, piloted by Horst Ruschmeyer. The second and third aircraft, V002 (D-EERO) and V003 (D-EERH), on flew on 23 September 1990 and 12 February 1992 respectively. Despite promising flight test results, the unavailability of Porche engines led to the development of the Textron Lycoming powered R 90.

R 90

Powered by a Lycoming IO-540-C4D5 driving a Mühlbauer MTV.14-B constant speed propeller, the production R 90-230RG was built from 1988 to the mid-1990s in Germany. The engine is de-rated to {{convert|231|hp|kW|abbr=on|disp=flip}} to reduce noise, but still enables the R 90 to reach a maximum cruising speed of {{convert|324|kph|kn mph|abbr=on}}. German certification was awarded in June 1992. After a short production period Ruschmeyer Luftfahrttechnik filed for bankruptcy in 1996, however in 1999 Solaris Aviation was founded, and purchased the assets of Ruschmeyer, marketing the R90 as the Solaris Sigma.^[2]

Variants

Data from:^[3]

MF-85: The first three prototypes powered by Porsche PFM 3200 engines.

R 90: Production aircraft powered by Lycoming IO-540-C4D5 engines

R 90-230-RG: The main variant with retractable undercarriage

R 90-230-FG: Variant with fixed undercarriage, powered by Lycoming O-540-J engines.

R 90-180-FG: Variant with fixed undercarriage, powered by Lycoming IO-360 engines.

R 90-350T-RG: High performance variant with retractable undercarriage, powered by {{convert|185|kW|hp|abbr=on}} turbo-charged engines.

R 90-420AT-RG:High performance variant with retractable undercarriage, powered by Allison 250-B17 turboprop engines

R 95: 5/6 seat variant with retractable undercarriage.

Solaris Sigma: Production and marketing in the United States

Specifications (R 90-230 RG)

{{Aircraft specs
|ref=Jane's All The World's Aircraft 1993-94 ^[4]
|prime units?=met

|perfhide=
|max speed kmh=322
|max speed mph=
|max speed kts=
|max speed note=at {{convert|3050|m|abbr=on}}
|max speed mach=
|cruise speed kmh=
|cruise speed mph=
|cruise speed kts=
|cruise speed note=
|stall speed kmh=108
|stall speed mph=
|stall speed kts=
|stall speed note=in landing configuration
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|minimum control speed kmh=
|minimum control speed mph=
|minimum control speed kts=
|minimum control speed note=
|range km=2740
|range miles=
|range nmi=
|range note=45% power at {{convert|915|m|abbr=on}}
|combat range km=
|combat range miles=
|combat range nmi=
|combat range note=
|ferry range km=
|ferry range miles=
|ferry range nmi=
|ferry range note=
|endurance=
|ceiling m=4895
|ceiling ft=
|ceiling note=
|g limits=
|roll rate=
|glide ratio=
|climb rate ms=5.8
|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=
|wing loading note=
|disk loading kg/m2=
|disk loading lb/sqft=
|disk loading note=
|fuel consumption kg/km=
|fuel consumption lb/mi=
|power/mass=
|thrust/weight=
|more performance=
|avionics=
}}

References

1. ^{{cite web|title=The Ruschmeyer R 90|url=http://www.airliners.net/aircraft-data/stats.main?id=346|website=www.airliners.net|accessdate=16 March 2015}}
2. ^{{cite web|title=Solaris Sigma Aircraft Announcement| url=http://www.solarisaviation.com/press1.html| website=www.solarisaviation.com| accessdate=16 March 2015}}
3. ^{{cite web|title=Ruschmeyer R90 aircraft history, performance and specifications|url=http://www.pilotfriend.com/aircraft%20performance/R90.htm|website=www.pilotfriend.com|accessdate=16 March 2015}}
4. ^{{cite book|editor1-last=Taylor|editor1-first=Michael J.H.|editor2-last=Lambert|editor2-first=mARK|editor3-last=Munson|editor3-first=Kenneth|title=Jane's all the world's aircraft, 1993-94|date=1993|publisher=Jane's Information Group|location=Coulson, Surrey, UK|isbn=978-0710610669|page=105|edition=84th}}

External links

Airliners.net
The Ruschmeyer aircraft
Solaris Aviation website

5 : German civil utility aircraft 1980–1989|German civil utility aircraft 1990–1999|Low-wing aircraft|Single-engined tractor aircraft|Aircraft first flown in 1988

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