What is the wing sweep angle in degrees?

What is the wing sweep angle in degrees?

• A. 31.8 Degrees
• B. 28.5 Degrees
• C. 35.0 Degrees
• D. 40 Degrees

Answer: (A)

Wing sweep describes how far back the wing is rotated relative to the airplane’s forward direction, usually measured on a plan view from a reference line such as the leading edge or the 25% chord line. The angle is found by comparing how far the wing tip is offset rearward from the root to how far the wing spans sideways. If you know the tip’s horizontal offset and the half-span, you can calculate sweep with the arctangent of offset divided by half-span. Executing that from the given planform yields about 31.8 degrees. This value sits in a common range for swept wings, balancing speed and stability. If you tried other angles, they would require different tip offsets or spans and wouldn’t align with the observed geometry of the wing.

Wing sweep describes how far back the wing is rotated relative to the airplane’s forward direction, usually measured on a plan view from a reference line such as the leading edge or the 25% chord line. The angle is found by comparing how far the wing tip is offset rearward from the root to how far the wing spans sideways. If you know the tip’s horizontal offset and the half-span, you can calculate sweep with the arctangent of offset divided by half-span. Executing that from the given planform yields about 31.8 degrees. This value sits in a common range for swept wings, balancing speed and stability. If you tried other angles, they would require different tip offsets or spans and wouldn’t align with the observed geometry of the wing.