Amodel of boeing’s latest wide body aircraft, the 787 dreamliner, is to be studied in a pressurised wind tunnel at 25°c. the prototype is to be 60 m long and the diameter of the fuselage (body of the aircraft) 5.7 m. the model to be studied is a 1: 15 model. a) what should the dimensions of the model be? if the actual aircraft is designed to fly at a cruising speed of 280 m/s at 10 000 m. if both reynolds number and mach number similarity is desired, what should the tunnel pressure be? b) if the drag on the model is found to be x n, what drag would be expected on the prototype? assume that cd remains the same.