商照重量与平衡

口诀:配平取中值；无油重量重心取中值（B737-15.3是例外);地板承载取小值,末位数是3取中值;

起飞重量重心:B737_19以下取中值,19以上取小值;A320-第一位数字相比较，相同数字被排除，剩下一个要死记，数字相连取小值。

5.重量与平衡

1. What are some characteristics of an airplane loaded with the CG at the aft limit?

A.Lowest stall speed, highest cruise speed, and least stability

B.Highest stall speed, highest cruise speed, and least stability.

C.Lowest stall speed, lowest cruise speed, and highest stability.

A X

2. What characteristic should exist if an airplane is loaded to the rear of its CG range?

A.Sluggish in aileron control.

B.Sluggish in rudder control

C.Unstable about the lateral axis

C X

3. As the CG is moved forward, the stability

A.Improves

B.Decrease

C.dose not change

A X

4. In flight ,as the time goes on , the CG will

A.change

B.not change

C.may change or may not change

A X

5. In small airplanes, normal recovery form spins may become difficult if the

A.-CG is too far rearward and rotation is around the longitudinal axis.

B.-CG is too far rearward and rotation is around the CG.

C.-spin is entered before the stall is fully developed.

C X

1. Determine which statement given below is correct.

A. Operating Weight is the sum of the DOW and the Take-off Fuel

B. Take-off Weight is equal to the addition of the DOW and the Payload

C. DOW is obtained by addition of the Basic Weight and Pantry load for A320

A

2. Determine which statement given below is correct.

A. Operating Weight equals to the Take-off Weight minus the Take-off Fuel

B. Take-off Weight is equal to the addition of the Operating Weight and the Payload

C. Zero Fuel Weight is obtained by subtracting the Take-off Fuel from Operating Weight

B

3. For most modern swept-wing transports with a large proportion of fuel store in the wings, reducing fuel contents in wing tanks will result in:

A. an aft movement of CG as fuel is consumed

B. a forward movement of CG as fuel is burning

C. no effect on CG movement

B

4. For most modern swept-wing transports, with the fuel burning , the CG will .

A. not change

B. change random

C. change regularly

C

5. The CG is often expressed as a percent of MAC, %0 of MAC means:.

A. the CG is at trailing edge of MAC

B. the CG is at middle of MAC

C. the CG is at leading edge of MAC

C

6. The CG is often expressed as a percent of MAC, %100 of MAC means:.

A. the CG is at trailing edge of MAC

B. the CG is at middle of MAC

C. the CG is at leading edge of MAC

A

7. Determine the ZFW CG in percent of MAC under the following condition for an A320 aircraft by completing the Figure 1.

Condition:

Dry Operating Weight = 94,000 lb and CG = 26 %

Deviation or adjustment: None