Forces in Flight Flashcards
Sin( Climb Angle ) =
( T - D ) / W
The best angle of climb is achieved at the maximum of excess ___
thrust
Rate of Climb Formula
ROC = Angle of Climb x TAS
In a steady descent, the equilibrium of forces acting on the aircraft is given by ___
D = T + W Sin( gamma )
Describe where you would find Vmp on the
1) Power Required Curve
2) Drag Curve
3) Polar Curve
1) Lowest point
2) Left of the lowest point
3) Between the point touched by a tangent from the origin and the top
Describe where you would find the best endurance for a propeller aircraft on the
1) Power Required Curve
2) Drag Curve
3) Polar Curve
1) Lowest point
2) Left of the lowest point
3) Between the point touched by a tangent from the origin and the top
Describe where you would find Vx for a propeller aircraft on the
1) Power Required Curve
2) Drag Curve
3) Polar Curve
1) Lowest point
2) Left of the lowest point
3) Between the point touched by a tangent from the origin and the top
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
1) Lowest point
2) Left of the lowest point
3) Between the point touched by a tangent from the origin and the top
Describe where you would find Vmd on the
1) Power Required Curve
2) Drag Curve
3) Polar Curve
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
Describe where you would find the best range for a propeller aircraft on the
1) Power Required Curve
2) Drag Curve
3) Polar Curve
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
Describe where you would find the best endurance for a jet aircraft on the
1) Power Required Curve
2) Drag Curve
3) Polar Curve
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
Describe where you would find the Vx for a jet aircraft on the
1) Power Required Curve
2) Drag Curve
3) Polar Curve
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
Describe where you would find the best range glide speed on the
1) Power Required Curve
2) Drag Curve
3) Polar Curve
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
Describe where you would find the best range for a jet aircraft on the
1) Power Required Curve
2) Drag Curve
3) Polar Curve
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
The point where a tangent from the origin touches the drag/thrust required curve is approximately _.__x Vmd
1.32
The best rate of climb is found where there is maximum excess of ___
power
The polar curve makes it possible to determine ___ and ___
min glide angle and parasite drag coefficient
Describe where you would find Vy for a jet aircraft on the
1) Polar Curve
1) Very bottom of the curve, far left
Stalling speed is found ___ on a polar curve
at the highest point
Describe where you would find the best lift/drag ratio on the
1) Power Required Curve
2) Drag Curve
3) Polar Curve
1) Where a tangent from the origin touches the curve
2) Lowest point
3) As per 1)
In the climb, parallel to the flight path is ___
thrust, drag and W Sin( gamma )
In the climb, normal to the flight path is ___
lift and W Cos( gamma )
Climb gradient decreases within ___ flap angle and ___ temperature
increasing
Formula to change gradient to %
( height gain / distance ) x 100
