Chapter 2.1B - Exam Review Flashcards
The type of Drag which results directly from the production of Lift from the Wings is called (Parasite/Induced) Drag?
Induced Drag.
Will an increase in Angle of Attack increase or decrease the Induced Drag?
Increase.
As an Aircraft approaches its Stall Speed at an Angle of Attack of around 16°, Induced Drag will be at its (minimum/maximum) value?
Maximum.
What is the name given to the sum of all the Drag not directly associated with the production of Lift?
Parasite Drag.
What are the major components of Parasite Drag (3)?
- Skin Friction.
- Form Drag.
- Interference Drag.
Without the viscosity or ‘stickiness’ of the air creating a boundary layer around the surface of the Aircraft, would there be any Skin Friction or Form Drag?
No.
What causes Induced Drag?
Production of Lift.
In straight and level flight, low Airspeeds require (high/low) Angles of Attack and produce (high/low) Induced Drag?
- High.
- High.
Is Skin Friction increased or decreased with an increase in Airspeed?
Increased.
The low pressure area formed by turbulent wake behind an Aircraft as it moves through the air produces (Skin Friction/Form Drag)?
Form Drag.
In straight and level flight, at low speed/high Angles of Attack the turbulent wake is (large/small) and the Form Drag is (high/low)?
- Large.
- High.
Does the lowering of Flaps increase or decrease Form Drag? Why?
- Increase.
- Lowering the flaps decreased the streamlining and increases the size of turbulent wake.
Is the size of the wake and therefore the amount of Form Drag, increased or decreased with increases in Angle of Attack?
Increased.
The Drag which is produced by turbulent mixing of the airflow where various surfaces of the Aircraft meet or adjoin, is called what?
Interference Drag.
Parasite Drag is high at (high/low) Airspeeds?
High.
