Theory Flashcards
What class of aircraft is a Cs25 aircraft?
A
What is the minimum maximum take off mass for an aircraft to be considered to be class A.
5700kg
How many passengers can a class B aircraft seat?
9 or less.
How do you define a class C aircraft?
Maximum passenger number of 9 OR maximum take-off mass exceeding 5700kg.
How would you define a class B aircraft?
Maximum passenger number of 9 AND a maximum take-off mass of 5700kg or less.
What is gross performance?
The expected performance of a fleet of aircraft.
What is the net performance?
The gross performance with a safety margin.
On a class A aircraft, what requirements are strict and which are lenient? (Performance/operational)
Performance - strict / operational - leniant
What type of performance is seen when an air aircraft is being tested?
Measured performance.
What is the acceptable chance of failure?
1 in a million.
On climb, which is bigger; net or gross?
Gross.
On descent, which is bigger; net or gross?
Net.
When landing, which is requires a longer stopping distance; net or gross?
Net.
What drag can cause thrust to decrease in an engine?
Intake momentum drag.
What gradient of line does the RAM air effect and intake momentum drag create?
Flat line : jet thrust
What happens to thrust, on a prop, as speed increases?
It decreases.
What happens to thrust as temperature increases?
Decreases.
What is the maximum thrust dependant on?
Temperature of engine core
Once the TO/GA line is reached, what happens to the RPM as temperature further decreases?
RPM decreases.
What is the VMD value, relative to the stall speed, in the clean configuration, for a jet engine aircraft.
1.6Vs
What is the VMD value, relative to the stall speed, in the landing configuration, for a jet engine aircraft.
1.4Vs
What is the VMD value, relative to the stall speed, in the clean configuration, for a prop engine aircraft.
1.3Vs
What is the VMD value, relative to the stall speed, in the landing configuration, for a prop engine aircraft.
1.2Vs
What happens to VMD with an increase in mass?
It increases
What happens to VMD with gear extension?
Decreases
What happens when you plot the drag curve of Drag against TAS for a change in altitude?
Moves to the right.
What happens when you plot the drag curve of Drag against IAS for a change in altitude?
Nothing.
What is it called where jet thrust available meets total drag?
Max speed jet
Whats the equation for power with speed?
Power = Force x speed (thrust or drag x TAS)
Whats the power required formula?
PR = Drag x TAS
What is the graph for jet power vs TAS?
Diagonal lone from origin with gradient being jet power avalible.
What is the graph for prop power vs TAS?
Dome shape.
VMP is always slower/faster than VMD.
Slower than
Which speed represents the maximum endurance speed for a propeller driven aeroplane?
VMP
