Comparison of Hawker Siddeley HS-121 Trident and de Havilland DH-106 Comet 4

Attribute	Hawker Siddeley HS-121 Trident ×	de Havilland DH-106 Comet 4 ×
General
Manufacturer	Hawker Beechcraft	de Havilland
Model	Hawker Siddeley HS-121 Trident	de Havilland DH-106 Comet 4
Country	United States	United Kingdom
Manufactured from (year)	1964	1952
Manufactured to (year)	1978	1964
Type	Mid Size Passenger Jets	Mid Size Passenger Jets
Icao	TRID	-
Performance
Engine	3x 3 × Rolls-Royce RB.163-25 Spey 512	4x 4 × Rolls-Royce Avon Mk 524 turbojets
Power, lbf (lbf)	11,960	10,500
Max cruise speed (km/h)	972	900
Travel range (km)	3,860	5,189
Fuel economy (km/l)	0.21	0.152
Service ceiling (m)	10,668	12,802
Rate of climb (m/sec)	15.24	-
Take off distance (m)	840	2,290
Landing distance (m)	675	-
Weights
Max take off weight (kg)	68,000	73,483
Max payload (kg)	14,692	10,930
Fuel tank capacity (l)	24,730	39,520
Dimensions
Seats	18	81
Seats - business class	115	81
Seats - first class	-	56
Cabin height (m)	2	-
Cabin width (m)	3.4	-
Cabin length (m)	9.14	-
Exterior length (m)	40	34
Tail height (m)	8.6	8.99
Fuselage diameter (m)	3.6	-
Wing span (m)	29.9	35
Wing tips	No Winglets	No Winglets