#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ # # Aircraft: # Beech 99 # Low-speed cruise configuration # # File name: # beech99-v1 # # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ # # Authors: # # Jeff Scott # 2000/03/23 initial creation using # "Small twin turboprop commuter airplan" data from: # Roskam, J., Airplane Flight Dynamics and Automatic Flight # Controls, Part I, DARcorporation, Lawrence, KS, 1995, # pg 508-510. # # Michael Selig # http://www.uiuc.edu/~m-selig # 2002/02/22 added gear # #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ # # Notes: # - constant stability derivatives, no nonlinear aero # - approximate gear data # uses Twin Otter values # #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ # # References: # # - Roskam, J., Airplane Flight Dynamics and Automatic Flight # Controls, Part I, DARcorporation, Lawrence, KS, 1995, # pg 508-510 # # - Additional models and updates # http://amber.aae.uiuc.edu/~m-selig/apasim.html # #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ init Dz_cg 2.5 geometry bw 46. # [ft] geometry cbar 6.5 # [ft] geometry Sw 280. # [ft^2] # control deflections "place holders" aircraft data is found controlSurface de 20 20 # [deg] controlSurface da 20 20 # [deg] controlSurface dr 20 20 # [deg] mass Weight 7000 # [lb] mass I_xx 10085 # [slug-ft^2] mass I_yy 15148 # [slug-ft^2] mass I_zz 23046 # [slug-ft^2] mass I_xz 1600 # [slug-ft^2] # Roskam: CTx=0.162 (SL conditions) --> 1550 lb # aircraft specs: two engines of 553 kW each # ~2300 lb static thrust each engine simpleSingle 2300 # [lb] CL CLo 0.201 # [] CL CL_a 5.48 # [/rad] CL CL_adot 2.5 # [/rad] CL CL_q 8.1 # [/rad] CL CL_de 0.6 # [/rad] CD CDo 0.027 # [] CD CD_a 0.131 # [/rad] Cm Cmo 0.05 # [] Cm Cm_a -1.89 # [/rad] Cm Cm_adot -9.1 # [/rad] Cm Cm_q -34.0 # [/rad] Cm Cm_de -2.0 # [/rad] CY CY_beta -0.59 # [/rad] CY CY_p -0.19 # [/rad] CY CY_r 0.39 # [/rad] CY CY_da 0.0 # [/rad] sign reversed CY CY_dr 0.148 # [/rad] Cl Cl_beta -0.13 # [/rad] Cl Cl_p -0.5 # [/rad] Cl Cl_r 0.14 # [/rad] Cl Cl_da -0.156 # [/rad] sign reversed Cl Cl_dr 0.0109 # [/rad] Cn Cn_beta 0.08 # [/rad] Cn Cn_p 0.0109 # [/rad] Cn Cn_r -0.197 # [/rad] Cn Cn_da 0.0012 # [/rad] sign reversed Cn Cn_dr -0.0772 # [/rad] # nose wheel (must be position 0 if present) gear Dx_gear 0 10.5 # x-offset from CG [ft] gear Dy_gear 0 0 # y-offset from CG [ft] gear Dz_gear 0 4.05 # z-offset from CG [ft] gear cgear 0 300 # damping [lbs/ft/sec] gear kgear 0 900 # springiness [lbs/ft] gear muGear 0 0.01 # rolling coefficient gear strutLength 0 -0.5 # gear travel [ft] (not yet used) # right gear (must be position 1 if present) gear Dx_gear 1 -3.9 # [ft] gear Dy_gear 1 6.25 # [ft] gear Dz_gear 1 5 # [ft] gear cgear 1 300 # [lbs/ft/sec] gear kgear 1 900 # [lbs/ft] gear muGear 1 0.01 # rolling coefficient gear strutLength 1 2.5 # [ft] # left gear (must be position 2 if present) gear Dx_gear 2 -3.9 # [ft] gear Dy_gear 2 -6.25 # [ft] gear Dz_gear 2 5 # [ft] gear cgear 2 300 # [lbs/ft/sec] gear kgear 2 900 # [lbs/ft] gear muGear 2 0.01 # rolling coefficient gear strutLength 2 2.5 # [ft] # end of file '*' *