Flight Operations Flashcards
(14 cards)
1
Q
Max Endurance for a turbojet
A
Occurs at best L/D ratio
2
Q
Dihedral
A
- Increase in wing angle
- Enhances roll stability
- More lift on lower wing during bank
3
Q
Mcrit
A
Highest speed possible with no part of aircraft exceeding speed of sound
4
Q
Flight above Mcrit
A
- Drag associated with the shockwave becomes very pronounced 5% above Mcrit
- This is wave drag
- Going even faster causes the separation of airflow over the wing, increasing drag and leading to a loss of control
5
Q
Transonic Drag Management - Sweepback
A
- Delays onset of shockwaves
- Mcrit is increased by reducing parallel flow of air over chord line of wing
6
Q
Transonic Drag Management - Vortex Generators
A
- Aerodynamic surface on wings that creates a vortex
- Delay flow separation and aerodynamic stall
7
Q
Dutch Roll
A
- Swept wing aircraft susceptible
- Aircraft tend to roll when there is yaw, then oscillate due to changes in life and drag
8
Q
Mach Buffet
A
- Shockwave over wing interferes with airflow over tail
- Leads to a pitch down moment
9
Q
Aerodynamic Ceiling
A
- Low speed and high speed buffets have merged
- Coffin Corner
10
Q
Specific Air Range (SAR)
A
- Nautical Air Miles per pound of fuel burned
- SAR = TAS/FF
11
Q
V3
A
Flap Retraction Speed
12
Q
Vb
A
Maximum gust / Turbulence penetration spee
13
Q
Vlof
A
Lift off speed
14
Q
Dispatch Limitations
A
- Landing distance must be less than 70% of distance available for prop driven large aircraft
- Landing distance must be less than 60% of distance available for turbojet driven large aircraft
- If turbojet and runway is wet, increase flight manual distance before applying 60% rule
