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Exercise 5: Aircraft PerformanceJet Aircraft Performance (Questions 1-4)

Refer to Figure 6.11 in Flight Theory and Aerodynamics (Doyle & Lewis, 1965) and assume Weight = 15,000 lb.

1. Find Climb Angle at 300 KTAS at 100 % RPM.

2. Find Rate of Climb at 300 KTAS at 100 % RPM.

3. Find Max Level Airspeed at 100% RPM.

4. Find Max Range Airspeed (VBR) and Max Endurance Airspeed (VBE).

This document was developed for online learning in ASCI 309.File name: Ex_5_Acft_Performance

Updated: 05/31/2014

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Propeller Aircraft Performance (Questions 5-8)

Refer to Figure 8.4 in Flight Theory and Aerodynamics and assume:

W = 20,000 lb S = 500 ft2

Density Sea Level Standard Day

5. Find Max Range Airspeed (KTAS) and Max Specific Range (SRmax).

6. Find Max Endurance Airspeed (KTAS) and Max Specific Endurance (SE = 1/FF)

7. Find Max Rate of Climb Airspeed and Max Rate of Climb.

8. Find new Max Range Airspeed after fuel has burned down and W = 15,000 lb.

This document was developed for online learning in ASCI 309.File name: Ex_5_Acft_Performance

Updated: 05/31/2014

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Landing Performance (Questions 9-14)

W = 15,000 lb CLMax = 1.5S = 230 ft2 Thrust @ Idle = 500 lb75% of Weight on Main Tires 25 % of Weight on Nose TireAverage Drag = 500 lb Sea level standard day

9. Find Approach Speed if V approach = 1.2 V stall (KTAS) (For landing and takeoff performance use KTAS. At sea level standard day KEAS=KTAS).

10. Find Average Rolling Friction (lb) on Nose Tire during Landing Rollout if Rolling Coefficient of Friction = 0.02.

11. Find Average Braking Friction (lb) on Main Tires during Landing Rollout on Dry Concrete. Use Figure 13.9 assume 10% Slip

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.

13. Find Landing Distance Ground Roll-out (ft)

14. Find Landing Distance (ft) if Runway is at 5,000 ft Density Altitude. Assume Residual Average Thrust and Average Drag remains the same.

This document was developed for online learning in ASCI 309.File name: Ex_5_Acft_Performance

Updated: 05/31/2014