Descent Flashcards
Purpose of a changeover alt
To prevent exceeding Mmo/ Vmo
Effect of mach no and CAS on the change over alt
Lower the mach no, the lower the change over alt
Higher the CAS, lower the change over alt
Descending on a mach no before the changeover alt
AOA decreases
FPA increases
Pitch decreases
Descending on a CAS after the change over alt
AoA, pitch and FPA all remain constant
Greatest angle of descent
Vmo
Max angle is at Vmo and with speed brakes due to the greatest excess drag
Min rate of descent
Vmd
All about power so its the tang to the Pr curve = vmd
Vmp for a prop
Max rate of descent
Top of the power curve = the most excess power required = the max rod
Max rod in a glide
Vmd, travel further, steeper angle
Min rod
Vmp, smaller angle, spend longer in the air, land earlier, max glide endurance
The effect of headwind
It will make the glide path steeper so go a little bit faster to rectify and maintain glide path
Tailwind - reduce speed