In Assignment 1 and 2, you were asked to consider the re-configuration of a Dassault Falcon 2000EX for a military surveillance and communications platform role. Suppose that the reconfigured aircraft...

In Assignment 1 and 2, you were asked to consider the re-configuration of a Dassault Falcon 2000EX for a military surveillance and communications platform role. Suppose that the reconfigured aircraft will carry 7600 kg of fuel and has an empty weight of 10,500 kg and payload+crew weight of 4500 kg. The redesigned wing has the following characteristics:Wing loading (W/S): 3800 N/m2Thrust to weight ratio (T/W): 0.35Wingspan: 21 mAspect ratio: 7.6Root chord length: 4.4 mTaper ratio: 0.25Leading-edge sweep angle: 26°Wing root leading-edge: 7.25 mNose gear: 3.5 m from datumMain gear: 10.56 m from datumGear wheel track: 4.78 mGear wheel base: 7.06 mOverturn angle: 50°Calculate the following:(a) Find XMAC, the longitudinal location of the mean aerodynamic chord, in mm from the datum(b) The acceptable ranges for the reconfigured aircraft’s centre of gravity in the longitudinal direction. Give the ranges in % of mean aerodynamic chord (MAC) aft of XMAC(c) The minimum acceptable gear height (from the ground to the fuselage)(d) The minimum turning radius that can be safely conducted at max ground speedRequirements:• Take-off fuselage angle of attack: • Fuselage take-off ground clearance: 30 cm• Nose gear static load is max 0.2W• Landing braking deceleration: -3.5 m/s2• Takeoff acceleration: +4.5 m/s2• Max ground speed: 20 knots• The aircraft CG must be forward of the aerodynamic centre (assume a.c. is at 0.25MAC)Instructor’s solution: (a) 9298 mm. (b) 0.186-0.249 MAC. (c) 1.278 m. (d) 9.05 m
Mar 27, 2021
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