Grumman Gulfstream II

The Gulfstream II (G-II) is an American twin engine business jet designed and built by Grumman and then in succession, Grumman American and finally Gulfstream American.

Variants

Its Grumman model number is G-1159 and its US military designation is C-11A. 

Gulfstream II (G-1159) 

Twin-engine executive, corporate transport aircraft, with accommodation for up to 14 passengers, powered by two Rolls-Royce Spey RB.168 Mk 511-8 turbofan engines.

Gulfstream II TT 

Modified version with tip tanks, increased range.

Gulfstream IIB (G-1159B) 

Modified version, with the wider, wingleted wings and instruments of the Gulfstream III, Maximum take-off weight increased to 68,200 lb. or 69,700 lb.

Gulfstream II SP 

Aircraft modified by the addition of Aviation Partners winglets.

VC-11A 

VIP transport version for the US Coast Guard.

Specifications

Crew

2

Capacity

19 / 2,900 lb (1,315 kg) maximum payload

Length

79 ft 11 in (24.36 m)

Wingspan

77 ft 10 in (23.72 m)

Height

24 ft 6 in (7.47 m)

Wing area

934.6 sq ft (86.83 m2)

Airfoil

Stn.50

NACA 0012 modified;

Stn 145

NACA 63A-009.5;

Stn 385

NACA 64 series modified

Empty weight

39,100 lb (17,735 kg)

Maximum zero-fuel weight

42,000 lb (19,051 kg)

Gross weight

65,500 lb (29,710 kg)

Max take-off weight

68,200 lb (30,935 kg)

Maximum landing weight

58,500 lb (26,535 kg)

Fuel capacity

28,300 lb (12,837 kg) maximum

Powerplant

2 × Rolls-Royce Spey 511-8 turbofan engines, 11,400 lbf (51 kN) thrust each

Performance

Stall speed

105 kn (121 mph, 194 km/h) at MLW, flaps down

Maximum cruising Mach number

M0.85 at max power at 30,000 ft (9,144 m) and AUW of 55,000 lb (24,948 kg)

Max speed

M0.85

Economical cruise speed

M0.77

Range

3,550 nmi (4,090 mi, 6,570 km) with 8 passengers, NBAA IFR reserves, crew of 3, 2,000 lb (907 kg) / pax

3,970 nmi (4,569 mi; 7,352 km) with NBAA VFR reserves

Service ceiling

45,000 ft (14,000 m)

Rate of climb

3,800 ft/min (19 m/s)

1,200 ft/min (6.10 m/s) on one engine

Take-off run (FAA)

5,850 ft (1,783 m)

Landing run (FAA)

3,400 ft (1,036 m)

Take-off

91 EPNdB

Approach

97 EPNdB

Sideline

103 EPNdB.

 

 

 

 

 

 

 

 

 

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