Utilizing your notes and past knowledge answer the following questions: 1) What are the three flight situations in which a stall may occur? 2) In a turn what must be applied to the yoke/stick to increase the aircraft AOA and if excessive AOA occurs in a turn what may happen to the aircraft? 3) To balance an aircraft aerodynamically, what is located aft of CoG and what does this make the aircraft “naturally feel?” 4) What happens to the airfoil shape if ice, snow or sleet is allowed to form on the airfoil and what effect does this have on the airflow? 5) If ice is allowed to form on the airfoil Warm-Up – 11/18 – 10 minutes
Warm-Up – 11/18 – 10 minutes. Utilizing your notes and past knowledge answer the following questions: What are the three flight situations in which a stall may occur? - PowerPoint PPT Presentation
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Utilizing your notes and past knowledge answer the following questions:
1) What are the three flight situations in which a stall may occur?
2) In a turn what must be applied to the yoke/stick to increase the aircraft AOA and if excessive AOA occurs in a turn what may happen to the aircraft?
3) To balance an aircraft aerodynamically, what is located aft of CoG and what does this make the aircraft “naturally feel?”
4) What happens to the airfoil shape if ice, snow or sleet is allowed to form on the airfoil and what effect does this have on the airflow?
5) If ice is allowed to form on the airfoil what is increased and what is decreased as a result?
Warm-Up – 11/18 – 10 minutes
Questions / Comments
Utilizing your notes and past knowledge answer the following questions:
1) What are the three flight situations in which a stall may occur?
2) In a turn what must be applied to the yoke/stick to increase the aircraft AOA and if excessive AOA occurs in a turn what may happen to the aircraft?
3) To balance an aircraft aerodynamically, what is located aft of CoG and what does the make the aircraft “naturally feel?”
4) What happens to the airfoil shape if ice, snow or sleet is allowed to form on the airfoil and what effect does this have on the airflow?
5) If ice is allowed to form on the airfoil what is increased and what is decreased as a result?
Warm-Up – 11/18 – 10 minutes
Aerodynamic Forces in Flight Maneuvers
Stalls
• There are three flight situations in which the critical AOA can be exceeded: low speed, high speed, and turning.
Utilizing your notes and past knowledge answer the following questions:
1) What are the three flight situations in which a stall may occur?
2) In a turn what must be applied to the yoke/stick to increase the aircraft AOA and if excessive AOA occurs in a turn what may happen to the aircraft?
3) To balance an aircraft aerodynamically, what is located aft of CoG and what does the make the aircraft “naturally feel?”
4) What happens to the airfoil shape if ice, snow or sleet is allowed to form on the airfoil and what effect does this have on the airflow?
5) If ice is allowed to form on the airfoil what is increased and what is decreased as a result?
Warm-Up – 11/18 – 10 minutes
Aerodynamic Forces in Flight Maneuvers
Stalls
• In a turn, additional lift is acquired by applying back pressure to the elevator control.
• This increases the wing’s AOA, and results in increased lift.
Utilizing your notes and past knowledge answer the following questions:
1) What are the three flight situations in which a stall may occur?
2) In a turn what must be applied to the yoke/stick to increase the aircraft AOA and if excessive AOA occurs in a turn what may happen to the aircraft?
3) To balance an aircraft aerodynamically, what is located aft of CoG and what does this make the aircraft “naturally feel?”
4) What happens to the airfoil shape if ice, snow or sleet is allowed to form on the airfoil and what effect does this have on the airflow?
5) If ice is allowed to form on the airfoil what is increased and what is decreased as a result?
Warm-Up – 11/18 – 10 minutes
Aerodynamic Forces in Flight Maneuvers
Stalls• To balance the
aircraft aerodynamically, the CL is normally located aft of the CG.
• This makes the aircraft inherently nose-heavy, downwash on the horizontal stabilizer counteracts this condition.
Utilizing your notes and past knowledge answer the following questions:
1) What are the three flight situations in which a stall may occur?
2) In a turn what must be applied to the yoke/stick to increase the aircraft AOA and if excessive AOA occurs in a turn what may happen to the aircraft?
3) To balance an aircraft aerodynamically, what is located aft of CoG and what does the make the aircraft “naturally feel?”
4) What happens to the airfoil shape if ice, snow or sleet is allowed to form on the airfoil and what effect does this have on the airflow?
5) If ice is allowed to form on the airfoil what is increased and what is decreased as a result?
Warm-Up – 11/18 – 10 minutes
Aerodynamic Forces in Flight Maneuvers
Stalls• Airfoil shape and degradation of that shape must also be considered in a discussion of stalls.
• If ice, snow, and frost are allowed to accumulate on the surface of an aircraft, the smooth airflow over the wing is disrupted.
Utilizing your notes and past knowledge answer the following questions:
1) What are the three flight situations in which a stall may occur?
2) In a turn what must be applied to the yoke/stick to increase the aircraft AOA and if excessive AOA occurs in a turn what may happen to the aircraft?
3) To balance an aircraft aerodynamically, what is located aft of CoG and what does the make the aircraft “naturally feel?”
4) What happens to the airfoil shape if ice, snow or sleet is allowed to form on the airfoil and what effect does this have on the airflow?
5) If ice is allowed to form on the airfoil what is increased and what is decreased as a result?
Warm-Up – 11/18 – 10 minutes
Aerodynamic Forces in Flight Maneuvers
Stalls
• If ice is allowed to accumulate on the aircraft during flight the weight of the aircraft is increased while the ability to generate lift is decreased.
Chapter 4 – Aerodynamics of FlightFAA – Pilot’s Handbook of Aeronautical Knowledge
Mission: Identify in writing the forces acting on an aircraft in flight. Describe how the forces of flight work and how to control them
with the use of power and flight controls essential to flight. Describe the aerodynamics of flight. Describe in writing how design, weight, load factors, and gravity
affect an aircraft during flight maneuvers.
EQ: Describe the importance of Aeronautical Knowledge for the
student pilot learning to fly.
Today’s Mission Requirements
Basic Propeller Principles• The aircraft
propeller consists of two or more blades and a central hub to which the blades are attached.
• Each blade of an aircraft propeller is essentially a rotating wing.
Basic Propeller Principles
• The propeller blades are like airfoils and produce forces that create the thrust to pull, or push, the aircraft through the air.
is an airfoil comparable to a cross-section of an aircraft wing.
• One surface of the blade is cambered or curved, similar to the upper surface of an aircraft wing, while the other surface is flat like the bottom surface of a wing.
• The reason a propeller is “twisted” is that the outer parts of the propeller blades, like all things that turn about a central point, travel faster than the portions near the hub.
Basic Propeller Principles
• Propeller blades are twisted to change the blade angle in proportion to the differences in speed of rotation along the length of the propeller, keeping thrust more nearly equalized along this length.
Questions / Comments
Lesson Closure - 3 – 2 - 1
3. List 3 things you learned today.
1. Create (1) quiz question with answer about today’s lesson.
2. List 2 things you have questions about today’s lesson.