Engine Type Correction Factor for Nacelle Weight According to Torenbeek Method

For General Aviation aircraft , the nacelle weight according to Torenbeek method is computed from:

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where typical values for the factors are:

Engine Type

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Single Engine

2.5

0.0

0.5

Multi Engines

Horizontally Opposed Piston Engines

0.320

0.0

1.00

Radial Piston Engines

0.045

-0.25

1.25

Turboprop Engines

0.140

0.0

1.00