Search Results

MULTI-ENGINE airplanes may be divided into those which can and those which cannot fly with the full normal load after one or more of the engines have stopped. Until within a very short time the former class was practically non-existent. The latter class includes military airplanes in which it is desired to obtain a fuselage having a nose without an engine and those in which sufficient power cannot be obtained from a single powerplant. Some two-engine planes that can fly with a single engine on a test flight fail to do so after having been in use for some time. Ability of a two-engine plane to fly with one engine usually necessitates a sacrifice in the pay-load to such an extent that its operation is uneconomical. Flying with one engine of a multi-engine plane idle is difficult because of the reduction of the propeller speeds of the remaining engine or engines and the turning forces involved.