Forces in Flight

Question 1

Sin( Climb Angle ) =

Answer 1

( T - D ) / W

Question 2

The best angle of climb is achieved at the maximum of excess ___

Answer 2

thrust

Question 3

Rate of Climb Formula

Answer 3

ROC = Angle of Climb x TAS

Question 4

In a steady descent, the equilibrium of forces acting on the aircraft is given by ___

Answer 4

D = T + W Sin( gamma )

Question 5

Describe where you would find Vmp on the

1) Power Required Curve
2) Drag Curve
3) Polar Curve

Answer 5

1) Lowest point
2) Left of the lowest point
3) Between the point touched by a tangent from the origin and the top

Question 6

Describe where you would find the best endurance for a propeller aircraft on the

1) Power Required Curve
2) Drag Curve
3) Polar Curve

Answer 6

1) Lowest point
2) Left of the lowest point
3) Between the point touched by a tangent from the origin and the top

Question 7

Describe where you would find Vx for a propeller aircraft on the

1) Power Required Curve
2) Drag Curve
3) Polar Curve

Answer 7

1) Lowest point
2) Left of the lowest point
3) Between the point touched by a tangent from the origin and the top

Question 8

Describe where you would find the minimum ROD in a power off glide on the

1) Power Required Curve
2) Drag Curve
3) Polar Curve

Answer 8

1) Lowest point
2) Left of the lowest point
3) Between the point touched by a tangent from the origin and the top

Question 9

Describe where you would find Vmd on the

1) Power Required Curve
2) Drag Curve
3) Polar Curve

Answer 9

1) Where a tangent from the origin touches the curve
2) Lowest point
3) Where the curve is touched by a tangent from the origin

Question 10

Describe where you would find the best range for a propeller aircraft on the

1) Power Required Curve
2) Drag Curve
3) Polar Curve

Answer 10

1) Where a tangent from the origin touches the curve
2) Lowest point
3) Where the curve is touched by a tangent from the origin

Question 11

Describe where you would find the best endurance for a jet aircraft on the

1) Power Required Curve
2) Drag Curve
3) Polar Curve

Answer 11

1) Where a tangent from the origin touches the curve
2) Lowest point
3) Where the curve is touched by a tangent from the origin

Question 12

Describe where you would find the Vx for a jet aircraft on the

1) Power Required Curve
2) Drag Curve
3) Polar Curve

Answer 12

1) Where a tangent from the origin touches the curve
2) Lowest point
3) Where the curve is touched by a tangent from the origin

Question 13

Describe where you would find the best range glide speed on the

1) Power Required Curve
2) Drag Curve
3) Polar Curve

Answer 13

1) Where a tangent from the origin touches the curve
2) Lowest point
3) Where the curve is touched by a tangent from the origin

Question 14

Describe where you would find the best range for a jet aircraft on the

1) Power Required Curve
2) Drag Curve
3) Polar Curve

Answer 14

1) Right of where a tangent from the origin touches the curve
2) Where a tangent from the origin touches the curve
3) Very bottom of the curve, far left

Question 15

The point where a tangent from the origin touches the drag/thrust required curve is approximately _.__x Vmd

Answer 15

1.32

Question 16

The best rate of climb is found where there is maximum excess of ___

Answer 16

power

Question 17

The polar curve makes it possible to determine ___ and ___

Answer 17

min glide angle and parasite drag coefficient

Question 18

Describe where you would find Vy for a jet aircraft on the

1) Polar Curve

Answer 18

1) Very bottom of the curve, far left

Question 19

Stalling speed is found ___ on a polar curve

Answer 19

at the highest point

Question 20

Describe where you would find the best lift/drag ratio on the

1) Power Required Curve
2) Drag Curve
3) Polar Curve

Answer 20

1) Where a tangent from the origin touches the curve
2) Lowest point
3) As per 1)

Question 21

In the climb, parallel to the flight path is ___

Answer 21

thrust, drag and W Sin( gamma )

Question 22

In the climb, normal to the flight path is ___

Answer 22

lift and W Cos( gamma )

Question 23

Climb gradient decreases within ___ flap angle and ___ temperature

Answer 23

increasing

Question 24

Formula to change gradient to %

Answer 24

( height gain / distance ) x 100

Question 25

Formula to change % to ROC

Answer 25

( TAS x % x 6080 ) / 60

Question 26

In a descent, the forces acting on an aircraft are given by ___

Answer 26

D = T + W Sin( gamma )

Question 27

In powered descent, parallel to the flight path is ___

Answer 27

drag, thrust, and W Sin( gamma )

Question 28

In powered descent, normal to the flight path is ___

Answer 28

lift, W Cos( gamma )