How can the correct dihedral angle of a wing be determined?

The correct determination of the dihedral angle of a wing is achieved using a dihedral board and bubble level. This method is precise and ensures that the angle is measured accurately in accordance with specific engineering standards.

A dihedral board is a tool specifically designed for measuring angles on wings, which provides a stable and flat reference surface. When used in conjunction with a bubble level, it can help confirm if the wing is positioned at the manufacturer’s specified angle relative to the aircraft structure. This measurement is crucial for ensuring stability and proper performance characteristics of the aircraft during flight.

In contrast, measuring from the wingtip to the fuselage may not yield accurate results, since it does not take into account variations in wing structure or alignment. Calculating with flight dynamics software, while insightful for overall aircraft performance analysis, does not directly measure the physical angles. Visually aligning with the horizon lacks precision due to the subjective nature of visual assessment, which is not reliable for technical specifications. Thus, using a dihedral board and bubble level is the most effective method to ensure that the wing is set to the correct dihedral angle.