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.

Engine:
Ivchenko AI-14RF 308 hp (230 kW) 9 cylinder aircooled radial
Propeller:
Two-blade variable pitch wooden V-530 D35
Dimensions:
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
Weights and loadings:
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
Performances:
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