Comparison of Saab AJ-37 Viggen and Yakovlev Yak-141

Attribute	Saab AJ-37 Viggen ×	Yakovlev Yak-141 ×
General
Manufacturer	Saab Gripen	Yakovlev
Model	Saab AJ-37 Viggen	Yakovlev Yak-141
Country	Sweden	Russia
Manufactured from (year)	1971	1987
Manufactured to (year)	2005	1991
Type	Fighter Jets	Fighter Jets
Icao	SB37	Y141
Performance
Engine	1x 1 × Volvo RM 8B afterburning turbofan	1x Soyuz R-79V-300 and 2 x RKBM RD-41 turbojets (9400 lbf each)
Power, lbf (lbf)	28,110	34,000
Avionics	Saab CK 37, Ericsson PS 37 X-band monopulse radar, Decca Type 72 Doppler navigation radar	Doppler radar, laser-TV ranging and aiming, HUD
Max cruise speed (km/h)	2,232	1,798
Approach speed (km/h)	220	-
Travel range (km)	2,037	2,037
Fuel economy (km/l)	0.235	-
Service ceiling (m)	18,288	15,514
Rate of climb (m/sec)	203.33	248.92
Take off distance (m)	400	-
Landing distance (m)	450	-
Weights
Max take off weight (kg)	22,500	19,500
Max payload (kg)	3,600	2,600
Fuel tank capacity (l)	5,701	6,117
Dimensions
Seats	1	1
Exterior length (m)	16.4	18.36
Tail height (m)	5.9	5
Fuselage diameter (m)	2.5	1
Wing span (m)	10.6	10.1
Wing tips	No Winglets	No Winglets