1. ME 440 Aerospace Engineering Fundamentals Hot Topic of the Week

2. Aviation Payload

3. How much does cargo weight change the flight mechanics of a plane? -- Keith Ortman

4. Payload = Weight

5. How does weight affect flight? Requires greater lift, hence more wingspan More wing span creates more drag requiring more engine thrust Increased acceleration needed for take off requiring more engine thrust

6. An Example: C-5 Galaxy

7. C-5 Galaxy Data Manufacturer: Lockheed Wingspan: 222'-8.5" Gross Weight: 837,000 lbs Maximum Cargo Weight: 263,200 lbs Maximum Speed: 571 mph Engine Type: Turbofan Engine Manufacturer: General Electric Engine Thrust: 41,100 lbs

8. Determine the wingspan difference due to the payload.

9. Determine the thrust difference due to added drag.

10. Determine the thrust difference due to take off acceleration.

11. Must also consider impact on fuel requirements, control and stability, and structural design.