Comparison of Bell AH-1Z Viper and Bell UH-1Y Venom

Attribute	Bell UH-1Y Venom ×	Bell AH-1Z Viper ×
General
Manufacturer	Bell Helicopter	Bell Helicopter
Model	Bell UH-1Y Venom	Bell AH-1Z Viper
Country	United States	United States
Manufactured from (year)	2008	2008
Type	Military Helicopters	Military Helicopters
Icao	UH1Y	AH1Z
Performance
Engine	2x 2 × General Electric T700-GE-401C	2x 2 × General Electric T700-GE-401C turboshaft
Power, hp (hp)	1,800	1,800
Avionics	FLIR Systems Inc. BRITE Star NTIS	THALES Avionics TopOwl HMS/D
Max cruise speed (km/h)	315	370
Travel range (km)	602	685
Fuel economy (km/l)	0.137	0.68
Service ceiling (m)	6,096	6,096
Rate of climb (m/sec)	12.8	14.17
Weights
Max take off weight (kg)	8,392	8,392
Max payload (kg)	3,021	2,614
Fuel tank capacity (l)	1,469	1,561
Dimensions
Seats	1	2
Cabin height (m)	1.2	-
Cabin length (m)	2.3	-
Exterior length (m)	17.78	17.67
Tail height (m)	4.5	4.31
Fuselage diameter (m)	2.59	0.83
Wing span (m)	14.88	14.6
Wing tips	No Winglets	No Winglets