Flight, Climb, Descending, Turning Flashcards
In level flight what does lift =
Weight + tailplane downforce
How do under slung engines affect the downforce required from the tailplane
They reduce the force required
What is climb angle related to
Air mass
What is flight path related to
Ground related
What is the flight path angle
Angle between the aircrafts path and local horizon
What are the 2 components of pitch angle
AOA
Flight path angle
What is the component of lift that acts downwards in climb
Wcosgamma
What is the component of weight along the flight path
Wsingamma
What is the equation for excess thrust
Singamma = (T-D)/ w
What is the component of weight a acting perpendicular to the flight path
(Also can be lift)
L= wcosgamma
Where does Vx occur for a jet aircraft
Vmd
4° AOA
Cl/Cd max
Where is Vx for a propeller aircraft
Vmp (0.76Vmd)
What is a formula for climb gradient %
(Height change x 100) / horizontal distance
What is another equation to calculate % climb gradient
Sin gamma = (T-D)/w
What does the “second segment” mean
Loss of one of the critical engines
Vmd can be found at tangent to which curves?
Drag polar
Power required (different to trust required)
What is the min climb gradient for a twin engine jet in the second segment
2.4%
What is the min climb gradient for a 3 engine jet in the second segment
2.7%
What is the min climb gradient for a 4 engine jet in the second segment
3%
What does descent angle =?
Pitch angle + AOA
Is pitch angle positive or negative
Negative
Is descent angle positive or negative
Positive
What is the equation for angle of descent in still air
sin gamma = (D-T) / W
What speed is used in emergency decent and how is this achieved
Vmo (velocity max operating)
Mmo (Mach max operating)
Idle power
Spoilers
What is the equation for glide descent
Sin gamma = D/W
What is the equation for glide range
Height x l/d ratio
When is the greatest glide distance achieved
When l/d ratio is greatest
What speed do you glide at for max range
Vmd