Yak-18PS, 1969
The Yak18PM development with the tail wheel, the "PS" confirmed the former's triumph at the 1970 World Championship in UK. Produced in small series of six at the Arseniev plant, there is only one aircraft remaining to date. In contrast with the forthcoming. Yak-50, the "PS" history was not connected with any structural design flaws, thanks in particular to a lighter fabric-covered wing.
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Ivchenko AI-14RF 308 hp (230 kW) 9 cylinder aircooled radial
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| Two-blade variable pitch wooden V-530 D35 |
| Span Length Height Wings area |
10,6 m 8,35 m 3,07 m 17,0 m2 |
34,8 ft 27,4 ft 10,1 ft 182,7 ft2 |
| Basic empty weight Maximum takeoff weight Basic fuel capacity Max wing loading Max power loading |
859 kg
1080 kg 35 kg 59 kg /m2 3,34 kg/hp |
1894 lb
2381 lb 77 lb 12,1 lb/ft2 9,9 lb/kW |
| Maximum level speed @ 1000m Maximum rate of climb Service ceiling Maximum range (10% reserve) Take off run (sea level) Landing run (sea level) Maximum load factor |
320 km/h
12 m/s 4000 m 500 km 120 m 100 m + 9 / - 6 |
173 mph
2360 fpm 13115 ft 270 nm 400 ft 330 ft + 9 / - 6 |
