Lockheed 1649A


Technical Specifications

First Flight: October 10, 1956
Number Built: 44 were built for commercial use
Length: 124 feet 2 inches 
Wing Span: 150 feet 
Height: 25 feet  8 inches
Max Take-Off Wt.: 160,000 lbs. 
Max Landing Wt.: 123,000 lbs. 
Empty Wt.: 85,262 lbs. 
Max Cruising Speed: 385 mph   335 kts 
Normal Cruising Speed: 342 mph   297 kts 
Stall Speed: N/A
Service Ceiling: 25,000 feet 
Fuel Capacity: 9278 US gallons 
9844 US gallons w/optional tip tanks
Range: 6885 miles w/maximum fuel load w/o tips
5410 miles w/maximum payload w/o tips
Fuel Type: 115/145 octane
Fuel Consumption: 461 gph 4 engines w/max fuel load 
587 gph 4 engines w/max payload 
Engines: 4 Wright R-3350  rated at 3400 HP each 
Seating: 102 passengers
Crew: 4 Pilots  4 Flight attendents

Engine Specifications

 Wright R-3350-988TC18EA1-2 

Type: 18 cylinder air cooled radial
Diameter: 56.6 inches
Length: 89.53 inches
Bore: 6.125 inches
Stroke: 6.312 inches
Displacement: 3350 cubic inches
Compression Ratio: 6.7 to 1
Dry Weight: 3645 lbs.
Ignition: Bendix Scintilla DLN-9 (magnetos)
Fuel Grade: 115/145 octane
Carburation: Bendix PR58S2 
Performance: Take-Off Power 3400 HP @ 2900 rpm
Normal Power 2850 HP @ 2600 rpm
Cruise Power 1910 HP @ 2400 rpm
Remarks: The R-3350-988TC18EA1-2 is a Turbo-Compound engine using 3 small turbines driven by exhaust gas and connected by fluid couplings to the crankshaft and a gear reduction ratio of 0.4375 to 1. This increases the take-off power to 3400 HP. Each engine has 18 coils, 36 spark plugs and 62 gallons of oil.