Consolidated C-87 Liberator Express - Design and Development

Design and Development

The C-87 was hastily designed in early 1942 to fulfill the need for a heavy cargo and personnel transport with longer range and better high-altitude performance than the C-47 Skytrain, the most widely available United States Army Air Forces transport aircraft at the time.

The first C-87 prototype was based on a damaged B-24D, serial 42-40355, that crashed at Tucson Municipal Airport #2 on 17 February 1943. Six Consolidated Aircraft employees riding as passengers were killed and several others were injured.

The prototype was converted into a transport configuration by various modifications, including deletion of the gun turrets and other armament along with the installation of a strengthened cargo floor, including a floor running through the bomb bay. The glassed-in bombardier compartment of the B-24 was replaced by a hinged metal cap to allow front cargo loading. A cargo door was added to the port side of the fuselage, just forward of the tail, and a row of windows was fitted along the sides of the fuselage.

The C-87 could be fitted with removable seats and racks to carry personnel or litters in place of cargo. In its final configuration, the C-87 could carry between 20 and 25 passengers or 12,000 lbs of cargo. Because of war production bottlenecks and shortages, many C-87 aircraft were fitted with turbosuperchargers producing lower boost pressure and power than those fitted to B-24s destined for combat use, and ceiling and climb rate were accordingly adversely affected.

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