1) Using the following equation for the drag coefficient for the K21 glider, calculate: a) What is the formula for IAS f

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1 Using The Following Equation For The Drag Coefficient For The K21 Glider Calculate A What Is The Formula For Ias F 1 (173.41 KiB) Viewed 57 times

1) Using the following equation for the drag coefficient for the K21 glider, calculate: a) What is the formula for IAS for maximum endurance? b) Calculate the formula for part (a) c) What does the IAS for maximum range mean? Where CD​=0.0096+0.02CL2​ Assume the empty mass of the aircraft is 400 kg and is loaded with an instructor weighing 90 kg in the rear seat and you in the front both wearing a parachute weighing 7 kg. d) Define the stick fixed neutral point. What is the difference between stick fixed \& stick free. e) Calculate the location of the neutral point stick fixed of the K21 using the information below f) Is the neutral point in (d) stick free or fixed? g) Calculate the static margin with you and the instructor in the aircraft. h) Calculate the indicated stall speed and the load factor at the stall for a K21 containing you and an instructor in a 30 co-ordinated (no sideslip or skid) banked turn. Aircraft data: 2D lift curve slope of the main wing a1w​=0.11/deg 2D lift curve slope of the tailplane a1 T​=0.102/deg AOD - aft of Datum P1 - instructor who sits in the rear seat (assume his/her mass is 90 kg including parachute) P2 - the passenger; you (measure yourself please) ST​=1.92 m2 SW​=17.95 m2 Mean Aerodynamic chord (c 'double bar') as being 1.08 m Tip chord length =0.5 m, Root chord length =1.5 m Wing Span =17 m​. Tailplane Span = 3.1 m​ Oswald efficiency factor e=0.98