28. A design airplane intended to be certified as a commuter category under FAR part 23 has the following specifications: design gross weight is 3,100 lb, wing span is 34 ft, MAC is 4.75 ft, and maximum lift coefficient is 1.35 withflaps retracted. What is the required positive limit maneuvering load factor?a.3.8c.2.1b.3.93d.4.429. For purpose of constructing the flight envelope of a design airplane under FAR part 23, the derived gust velocity for Vc gust line at 35, 000 ft is:30. The swept back wing design is primarily intended to increase the critical Mach number of a supersonic aircraft but also useful in:31. Where is the buttock line or buttline of an aircraft? 32. Where is fuselage station No. 137 located?a. 137 centimeters aft of the nose or fixed reference lineb. aft of enginec. 137 inches aft of the zero or fixed reference lined. 137 inches aft of the engine firewall33. Which statement is true regarding a cantilever wing?34. Buffeting is the intermittent application of forces to a part of an airplane.It is caused by .35. Longitudinal (fore and aft) structural members of a semi-monocoque fuselage are called .
36. What of type loads causes the most rivet failures?a.bearingc.headb.shearingd.strain37. What physical factors are involved in the aspect ratio of airplane wings?38. An airplane’s center of lift is usually located aft of its center of gravity.