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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Exercise 5:Aircraft Performance
JetAircraft Performance (Questions 1-4)
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Refer to Figure 6.11 in Flight Theory and Aerodynamics(Doyle & Lewis, 1965) and assume Weight = 12,000 lb.
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1.Find Climb Angle at 250 KTAS at 100 % RPM
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2.Find Rate of Climb at 300 KTAS at 100 % RPM.
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2.Find Max Level Airspeed at 95% RPM.
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4.Find Max Range Airspeed (VBR) and Max Endurance Airspeed (VBE).
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Propeller Aircraft Performance (Questions 5-8)
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Refer to Figure 8.4 in Flight Theory and Aerodynamicsand assume:
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· W = 20,000 lb
· S = 500 ft2
· Density Sea Level Standard Day
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5.Find Max Specific Range and Max Range Airspeed (KTAS).
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6.Find Max Specific Endurance and Max Endurance Airspeed (KTAS).
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7.Find Max Rate of Climb and Max Rate of Climb Airspeed.
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8.Find new Max Range Airspeed after fuel has burned down and W = 15,000 lb.
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Landing Performance (Questions 9-14)
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W = 15,000 lbCLMax = 1.5
S = 500 ft2Thrust@ Idle = 500 lb
75% of Weight on Main Tires 25 % of Weight on Nose Tire
Average Drag = 500 lbSea level standard day
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9.Find Approach Speed if Vapproach = 1.2 * Vstall (KTAS) (For landing and takeoff performance use KTAS.At sea level standard day KEAS=KTAS).
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10.Find Average Rolling Friction (lb) on Nose Tire during Landing Rollout if Rolling Coefficient of Friction = 0.2.
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11.Find Average Braking Friction (lb) on Main Tires during Landing Rollout on Dry Concrete. Use Figure 13.9.
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12.Find Average Deceleration (ft/s2) during landing rollout.Assume Lift on wing is zero during landing rollout.Account for residual Thrust, Rolling Friction, Drag, and Braking Friction.
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13.Find Landing Distance Ground Roll-out (ft)
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14.Find Landing Distance (ft) if Runway is at 5,000 ft Density Altitude.
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