Transcript Document

Warm-Up – 11/20 – 10 minutes
Utilizing your notes and past knowledge answer the
following questions:
1)
2)
3)
4)
5)
An aircraft propeller functions like a _______ _____?
Which edge of a propeller blade hits the relative wind
first?
How is pitch of a propeller measured?
(True / False) - the area of decreased pressure is in
front of the propeller, and the force (thrust) is in a
forward direction.
What design factor is utilized on a propeller blade to
keep thrust more nearly equalized along this length?
Questions / Comments
Warm-Up – 11/20 – 10 minutes
Utilizing your notes and past knowledge answer the
following questions:
1)
2)
3)
4)
5)
An aircraft propeller functions like a _______ _____?
Which edge of a propeller blade hits the relative wind
first?
How is pitch of a propeller measured?
True / False - the area of decreased pressure is in
front of the propeller, and the force (thrust) is in a
forward direction.
What design factor is utilized on a propeller blade to
keep thrust more nearly equalized along this length?
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.
Warm-Up – 11/20 – 10 minutes
Utilizing your notes and past knowledge answer the
following questions:
1)
2)
3)
4)
5)
An aircraft propeller functions like a _______ _____?
Which edge of a propeller blade hits the relative wind
first?
How is pitch of a propeller measured?
True / False - the area of decreased pressure is in
front of the propeller, and the force (thrust) is in a
forward direction.
What design factor is utilized on a propeller blade to
keep thrust more nearly equalized along this length?
Basic Propeller Principles
• The chord line is an
imaginary line drawn
through the blade
from its leading edge
to its trailing edge.
• As in a wing, the
leading edge is the
thick edge of the
blade that meets the
air as the propeller
rotates.
Warm-Up – 11/20 – 10 minutes
Utilizing your notes and past knowledge answer the
following questions:
1)
2)
3)
4)
5)
An aircraft propeller functions like a _______ _____?
Which edge of a propeller blade hits the relative wind
first?
How is pitch of a propeller measured?
True / False - the area of decreased pressure is in
front of the propeller, and the force (thrust) is in a
forward direction.
What design factor is utilized on a propeller blade to
keep thrust more nearly equalized along this length?
Basic Propeller Principles
• The pitch is the
distance in inches,
which the propeller
would screw through
the air in one
revolution if there
were no slippage.
Warm-Up – 11/20 – 10 minutes
Utilizing your notes and past knowledge answer the
following questions:
1)
2)
3)
4)
5)
An aircraft propeller functions like a _______ _____?
Which edge of a propeller blade hits the relative wind
first?
How is pitch of a propeller measured?
True / False - the area of decreased pressure is in
front of the propeller, and the force (thrust) is in a
forward direction.
What design factor is utilized on a propeller blade to
keep thrust more nearly equalized along this length?
Basic Propeller Principles
• The airflow over the
wing has less
pressure, and the
force (lift) is upward.
• Instead of a horizontal
plane, the area of
decreased pressure is
in front of the
propeller, and the
force (thrust) is in a
forward direction.
Warm-Up – 11/20 – 10 minutes
Utilizing your notes and past knowledge answer the
following questions:
1)
2)
3)
4)
5)
An aircraft propeller functions like a _______ _____?
Which edge of a propeller blade hits the relative wind
first?
How is pitch of a propeller measured?
True / False - the area of decreased pressure is in
front of the propeller, and the force (thrust) is in a
forward direction.
What design factor is utilized on a propeller blade to
keep thrust more nearly equalized along this length?
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
THIS DAY IN AVIATION

November 20
1919 — The first
municipal airport in the
United States opens in
Tucson, Arizona and is still
in use today.

THIS DAY IN AVIATION

November 20
1943 — United States
troops invade Makin and
Tarawa in the Gilbert
Islands

THIS DAY IN AVIATION

November 20
1953 — The first man to
exceed Mach 2 is American
test pilot Scott Crossfield in
a Douglas D-558-2
“Skyrocket.”

THIS DAY IN AVIATION

November 20
1957 — The Vertol 105
twin-turbine powered
helicopter, using two
Lycoming T-53B's, flies for
the first time

THIS DAY IN AVIATION

November 20
1959 — Discoverer VIII
satellite is launched into
orbit from Cape Canaveral,
Florida.

THIS DAY IN AVIATION

November 20
1963 — The USAF
accepts its first two
McDonnell Douglas F-4C
“Phantom II” jet fighters.

Questions / Comments
November 2013
SUNDAY
3
MONDAY
4
TUESDAY
5
WEDNESDAY
6
THURSDAY
7
Chapter 4
Chapter 4
Forces of
Flight - Turns
Forces of
Flight –
Climbs
FRIDAY
SATURDAY
8
9
15
16
22
23
Decents
10
17
24
11
12
No School
Chapter 4
Chapter 4
Forces of
Flight
Forces of
Flight
Stalls
Stalls
18
19
13
20
Chapter 4
Chapter 4
Forces of
Flight
Chapter 4
Quiz
Basic
Propeller
Principles
Flight
14
21
FltLine
Friday
Flight
Simulator
Simulator
25
26
27
28
29
No School
No School
No School
No School
No School
30
Questions / Comments