SFS 31 washer

SFS 31 Milan washer
Type:	Motor sailer
Design country:	BR Germany
Manufacturer:	Scheiben-Flugzeugbau GmbH
First flight:	January 8, 1969
Number of pieces:	12 (including 3 in the USA)

The SFS 31 "Milan" windshield is a motor glider manufactured in the 1960s by the companies Scheibe-Flugzeugbau and Sportavia-Pützer in cooperation.

history

The SFS 31 is a combination of the wings of the SF 27M developed by Scheibe and the fuselage of the Fournier RF-4 , which was manufactured under license by Sportavia-Pützer. By using the significantly longer wings of the SF 27, the sailing characteristics could be significantly improved compared to the RF-4. With a glide ratio of 30 it exceeds z. B. the more popular Schleicher ASK 14 , which has a glide ratio of 28.

Technical specifications

Parameter	Data
crew	1
length	6.05 m
span	15.0 m
Wing area	12.00 m²
Elongation	18.7
profile	Wortmann FX 61-184
Empty mass	300 kg
Takeoff mass	430 kg
Glide ratio	30th
Minimum sink rate	0.85 m / s
Minimum speed	70 km / h
economist. Cruising speed	160 km / h
Top speed	180 km / h
Service ceiling	6000 m
Range	670 km
Engine	a Rectimo 4 AR with 39 PS (approx. 30 kW)

See also

• List of aircraft types

Individual evidence

1. ↑ Data of the SFS 31