Weight & Balance, Determining Performance, And Engine Systems & Operations

Question 1

Weight x Arm =

Answer 1

Moment

Question 2

Moment / Weight =

Answer 2

CG

Question 3

In large aircraft, CG is expressed in

Answer 3

MAC% (Mean aerodynamic chord)

Question 4

CG range is usually between

Answer 4

15% - 37% MAC

Question 5

CG aft of limits causes

Answer 5

Unstable pitch conditions regardless or airspeed

Question 6

Weight shift formula

Answer 6

Weight of cargo moved Distance CG Moved
——————————— = ———————————
Aircraft weight Distance between arms

Question 7

When determining performance for a short field takeoff over a 50’ obstacle, what speed is most important?

Answer 7

Vx

Question 8

Performance is decreased by how much with cargo door removed?

Answer 8

5%

Question 9

When you lose an engine, you lose how much power and climb performance?

Answer 9

50% of power and 70-80% climb performance

Question 10

What are the two types of rotating props and which do we have?

Answer 10

Conventional and counter rotating. We have counter rotating

Question 11

SE & ME absolute ceiling is always

Answer 11

0 FPM (Feet per minute)

Question 12

Service ceiling

Answer 12

100 FPM (Feet per minute)

Question 13

ME Service Ceiling

Answer 13

50 FPM (Feet per minute) 
*one engine is inop

Question 14

What is a critical engine?

Answer 14

An engine, when out, affects controllability and performance most adversely

Question 15

Climb performance is based on

Answer 15

Excess thrust

Question 16

Prop overspeed is usually an indication of

Answer 16

Low N2 pressure

Question 17

Why are left turning tendencies greater in twin engines?

Answer 17

Because there are two engines

Question 18

How long should you wait between start intervals?

Answer 18

30 seconds

Question 19

What are the Left Turning Tendencies?

Answer 19

P: P-factor (Asymmetrical thrust) - Yaw
A: Accelerated slipstream (Induced flow) - Roll
S: Spiraling slipstream (Corkscrew effect) - Yaw
T: Torque (Opposite direction of prop rotation) - Roll

Question 20

High altitude + High Temperature + High Humidity =

Answer 20

High Density Altitude