Revision Flashcards
(120 cards)
What is IAS?
Raw uncorrected number off airspeed gauge
How is IAS calibrated?
To sea level (1013.2 Hpa/15 degrees`
For the 727, when will the cockpit gauge read correctly?
Aircraft is at sea level OAT is 15 Baro is 1013.2 No interference to air flow over pitot or static vents (no pressure error) No errors in instrument mechanism Aircraft flying 200kts
How do we get calibrated airspeed?
Total amount of instrument error and pressure error corrections applied to IAS
What will happen to CAS if climbing at fixed EAS?
CAS will be greater
What is EAS equal to related to CAS?
EAS is always equal to or less than CAS
What happens to TAS if climbing at constant IAS in climb?
TAS increases with altitude
What is the difference to speed of sound in cold environments compared to hot?
Speed of sound slower in cold than warm
fast in warm air, slow in cold air
What is the speed of sound in higher altitudes compared to lower one?
Speed of sound is low at high altitudes where temps are cold
When do shockwaves form?
When air accelerating over wing reaches M1.0
What is Mcrit?
Actual mach number when shock wave occurs
What does Mach define relationship to
TAS to speed of sound
What will climbing at fixed Mach number do to TAS?
TAS reduces
What is Vmo/Mmo?
Normal operating speeds
Is Vmo/Mmo higher or lower than Vne?
Lower
How do we see Vmo/Mmo?
On barbers pole on ASI
What will climbing at IAS just below Vmo do to Mmo?
Mmo eventually exceeded?
What is relationship between true OAT to TAT?
True OAT always equal to or colder than TAT
What is TORA?
Physical length of the pavement
With regards to TORA, what must happen to an aircraft taking off at the end of TORA?
Must be airborne
What is ASDA?
Length of the pavement plus any stopway at the end of runway
Is the stopway required to be pavement?
No, just must be able to support weight of aircraft and not cause significant damage to aircraft structure
What is ASDR?
Accelerate/stop distance required by aircraft assuming rejection of takeoff at V1
What is the relationship between ASDR and ASDA re takeoff weight?
Takeoff weight shall be such that ASDR shall not exceed ASDA