Approach category speeds are defined by which formula?
Approach category speeds are defined by which formula?
This speed is defined to be equal to the greater of stall speed (Vso) multiplied by 1.3, or stall speed (Vs1g) multiplied by 1.23.
The landing configuration that is to be taken into consideration can be defined by either the operator or by the aeroplane manufacturer but is most commonly assigned by the manufacturer.
What systems protect against a stall?
What systems protect against a stall?
Stall warning, stick shaker, stick pusher, etc...
Generically we can destinguish between systems that alert the pilot of the impeding stall, like stall the stall warning or stick shaker, and systems that try to correct the situation, like a stick pusher.
What is adverse yaw?
What is adverse yaw?
When rolling the aircraft the up-going wing will experience more drag than the down-going wing. This will result in a yawing moment that directly opposes the desired direction of turn. (i.e.: rolling left will cause a right yaw.)
Why will a jet usually not fly at 41.000 feet?
Why will a jet usually not fly at 41.000 feet?
Because of the distance which has to be covered to reach 41.000 feet which may not be convenient for a short flight.
On long flights it is more typical to fly at 41.000 feet when the aircraft weight and performance allows.
What is the movement of the center of pressure during/approaching a stall?
What is the movement of the center of pressure during/approaching a stall?
Center of pressure moves forward when approaching a stall.
What is Vs?
What is Vs?
Stall speed is defined as the minimum steady flight speed at which the airplane is controllable.
If turboprops are more efficient aircraft, why do they not climb that high?
If turboprops are more efficient aircraft, why do they not climb that high?
Jet engines are designed to achieve their best specific fuel consumption at high rpm, which can only be achieved at high altitudes where the air density is low.
Thrust produced will be low enough to equal the required cruising thrust. Also high altitude gives the best operating conditions for the airframe i.e. minimum drag during the cruise.
Turboprops need relatively dense air for the propellers to work efficiently and at high altitude the density would be too low.
How do you prevent an aircraft reaching Mcrit?
How do you prevent an aircraft reaching Mcrit?
Decreasing speed, by reducing engine power or pitching up.
Describe the take off segments.
Describe the take off segments.
1st segment starts at screen height and finishes at gear retracted.
2nd segment starts when the gear is retracted and finishes when acceleration alt is reached (min. 400ft max 1000ft) speed V2.
3rd segment starts at acceleration alt, minimum 400ft, and finishes when the flaps are retracted.
4th segment starts when the flaps are retracted, MCT is set and finishes at the 1500ft.
What is radiation fog?
What is radiation fog?
Radiation fog forms on cloudless nights with only very light winds and high relative humidity when the cold ground cools the air above it to its dew point causing condensation (fog).
Usually occurs inland in valleys and low lying areas (as these areas tend to have more moisture) and usually occurs in a high pressure system.