PPRuNe Forums - View Single Post - Flying the 'Bus in manual thrust
View Single Post
Old 15th May 2013, 14:40
  #4 (permalink)  
vilas
 
Join Date: Jun 2007
Location: Wanderlust
Posts: 3,407
Likes: 0
Received 0 Likes on 0 Posts

C Star

In A320 the FBW computers resist any change in pitch androll that is not initiated from side stick or the FMGS although they cannotprevent completely. Therefore when thrust is increased or decreased the pitchup or down is markedly dampened. Also there is no feel in the stick toincreasing or decreasing airspeed. That is why initially flying Airbus you feelas if something is missing. Since there are no aerodynamic pressures transferredto the side stick visual observation is the only cue. It is a technique of Flyingwithout feel. Also if you bring thrust levers to idle then when you open thrustagain it takes close to 5 seconds before thrust comes up.

Initially one tends to over control, so hold the stick verylightly and when you make a change vertically do not disturb the lateral positionand vice versa. After getting the pitch or roll leave the side stick alone.Whenever you want to change speed create the trend arrow in the requireddirection by reducing or increasing thrust but do not allow the arrow to gopast the desired speed. Get out of idle thrust early and when on speed note theN1 or EPR. That is reference thrust from where you increase or decrease andcome back. When correcting speed first correct the attitude only then considerthrust change, Say flying level, unnoticed you start losing altitude the speed willincrease if you reduce thrust without correcting pitch then when you raise theattitude to maintain altitude the speed will drop. Few approaches with thisplan it will be OK.
vilas is offline