What weather is associated with windshear?
What weather is associated with windshear?
CAT
Frontal passage
Microburst
What is the critical point?
What is the critical point?
The critical point (CP) is a point on a track where it is as quick to go on as it is to turn back.
Also known as ETP (Equal Time Point) and PET (Point of Equal Time).
What does a Mach trimmer do?
What does a Mach trimmer do?
A Mach trimmer automatically compensates for Mach tuck above Mcrit.
How much thrust comes from the N1 fan?
How much thrust comes from the N1 fan?
Depends on the engine.
In the case of the 737-800 CFM56, 27,300lbs total thrust at a ratio of 5.5:1
Can a helicopter rotor blade stall?
Can a helicopter rotor blade stall?
Yes
What is departure?
What is departure?
Departure is an east-west distance along a parallel line of latitude, other than the equator.
Departure is calculated by: Change of longitude(minutes) x cosine of latitude.
What increases Mcrit?
What increases Mcrit?
Swept wings, thin wings.
What is the difference between a supercharger and a turbocharger?
What is the difference between a supercharger and a turbocharger?
A turbo charger is externally driven by exhaust back pressure turning a turbine which in turn drives a compressor in the induction manifold to increase the air pressure (constant volume, higher pressure) and is controlled by waste gate.
A supercharger is internally driven by the propellor shaft to compress mixture and is controlled by RPM.
What wings does the Boeing 737-800 use?
What wings does the Boeing 737-800 use?
Swept back wings
What is a high bypass ratio engine?
What is a high bypass ratio engine?
In a high bypass design, the vast majority of the thrust is derived from the ducted fan, rather than from combustion gases expanding in a nozzle.
A high bypass ratio provides a lower thrust specific fuel consumption (grams/sec fuel per unit of thrust in kN using SI units), especially at zero velocity (at takeoff) and at the cruise speed of most commercial jet aircraft.