swept-wing-aerodynamicslisted
Install: claude install-skill ashfordeOU/aero-agent-skills
# Swept Wing Aerodynamics (aerodynamics/high-speed/swept-wing-aerodynamics)
Use when the task is wing sweep effects for high-speed flight: simple
sweep theory, the cosine corrections on lift curve slope and section
Mach, and the critical Mach number increase that sweep provides.
## Domain quick reference
- Simple sweep theory: a yawed infinite wing behaves like an unswept
wing at the velocity component normal to the leading edge. The sweep
angle Lambda is the angle between the leading edge and the plane
perpendicular to the freestream; all corrections below use
cos(Lambda).
- Effective (section) Mach: M_eff = M * cos(Lambda). The section sees
a reduced Mach number, which is the mechanism behind the critical
Mach increase.
- Velocity components about the leading edge: normal
M_n = M * cos(Lambda), tangential M_t = M * sin(Lambda).
- Lift curve slope (simple sweep theory): a_swept = a0 * cos(Lambda),
a0 the unswept section slope (2 * pi for thin sections). The
lift-curve-slope leaf applies this as one step of its correction
chain; this leaf owns the sweep-specific analysis and design forms.
- Critical Mach: M_crit,swept = M_crit,0 / cos(Lambda), from the
condition that the section reaches its critical Mach at the reduced
effective Mach. A 35 degree sweep (cos = 0.819) raises a 0.7
section critical Mach to about 0.85.
- Design form: Lambda = acos(M_crit,0 / M_crit,target) gives the sweep
angle needed to reach a target critical Mach.
- Range: the co