User:Eas4200c.f08.aero6.ortega

User:eas4200c.f08.aero6.ortega/HW3

Topics for HW 3 (but I wasn’t in class the day he assigned the NACA code)

Shear flow over curved panels (1.4)(1.5) Derivation of T = 2qA (3.48)(3.49) Prove A = .5bh for odd triangle Description of uniform bar with circular cross-section J= .5 pi a^4 Thin-walled t<<a; ri =a; ro =b; J=.5 pi(b^4 – a^4) =.5 pi (b-a)(b+a)(b^2+a^2) t     2r         2r^2 r = .5(a+b) prove b^2=~ r^2 a^2=~r^2	J = 2 pi t r^3

compare circular cross-section with thin walled fig 1.8a and b Describe warping Roadmap for torsional analysis of wing Problem 1.1 adapted for wing: compute Abar=pi/2(b/2)^2 + ba/2 Twist angle Comparison of sigma and integral symbols (quadrature/ Reimann sum)