Aircraft Design

Use this for “A jet cruises 2000 km at 245 m/s with cₜ = 0.7 per hour and L/D = 15. Its other segments’ ratio is 0.95. Find the fuel fraction.”

Use this for “Fixed load 4500 lbf, fuel fraction 0.2, and an empty-weight fit Wₑ/W₀ = 0.95W₀−0.05. Find the takeoff weight.”

Use this for “The approach needs a stall speed of 60 m/s with CLmax = 2.2 at sea level. What is the largest wing loading?”

Use this for “In cruise q = 10,800 Pa, CD0 = 0.02 and K = 0.045. Which wing loading needs the least T/W, and what is that T/W?”

Use this for “A wing spans 15 m with a 2.6 m root chord and a 1.4 m tip chord. Find its mean aerodynamic chord and where it sits.”

Use this for “The CG is 4.36 m aft of the datum and the 2 m MAC starts at 3.7 m. Where is the CG in % MAC, and is the airplane stable with hₙ = 0.45?”

Use this for “In a 5000 kg airplane, 200 kg of baggage moves 3 m aft. How far does the CG move?”