What is the height of the tropopause according to ISA?
What is the height of the tropopause according to ISA?
36,090ft in ISA
What is the range of a VOR?
What is the range of a VOR?
VOR stations are fairly short range: the signals are line of sight between transmitter and receiver and are useful for up to 200 miles.
Each station broadcasts a VHF radio composite signal including the navigation signal, station's identifier and voice, if so equipped.
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.
What is the optimum ISA cruise altitude for the Boeing 737?
What is the optimum ISA cruise altitude for the Boeing 737?
To varify the nose gear position (up or down).
What is an isobar?
What is an isobar?
A line on a meteorologic chart that joins places of equal sea level pressure (QNH).
What does a bypass ratio of 11:1 mean?
What does a bypass ratio of 11:1 mean?
For every 1kg of air passing through the combustion chamber, 11kg of air pass bypass the combustion chamber.
With 10 minutes to go to the destination, you're being advised by ATC that you will have to hold.
With 10 minutes to go to the destination, you're being advised by ATC that you will have to hold.
Fuel, speed and holding entry.
What wings does the Boeing 737-800 use?
What wings does the Boeing 737-800 use?
Swept back wings
Why does the speed tape on the PFD reads 45kt when the aircraft is stationary?
Why does the speed tape on the PFD reads 45kt when the aircraft is stationary?
The speed is too low for an indication.
How does an aerofoil work?
How does an aerofoil work?
An aerofoil is a body shaped to produce an aerodynamic reaction (lift) perpendicular to its direction of motion, for a small resistance (drag) force in that plane. It achieves this by accelerating the flow passing over it, and decelerating the flow passing under it. This change in velocity causes a change in pressure, which in turn generates lift.