Flight stability of wedges

Recent experiments have shown that cones of intermediate apex angles display orientational stability with leading in flight. Here we show and simulations analogous results hold the two-dimensional context solid wedges or triangular prisms planar flows at Reynolds numbers Re∼102 to 103. Slender are statically unstable tend flip over tumble, broad oscillate flutter due dynamical instabilities, but those half between about 40° 55° maintain stable posture during The existence “Goldilocks” shapes possess “just right” angularity for flight is thus robust dimensionality. We also moderate changes shape number.