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line of flight (turned the blades to a very high pitch). Feathering is necessary
when the engine fails or when it is desirable to shutoff an engine in flight.
7. Reversing : A constant speed propeller which has the ability to
assume a negative blade angle and produce a reversing thrust. When
propellers are reversed, their blades are rotated below their positive angle ,
that is, through flat pitch, until a negative blade angle is obtained in order to
produce a thrust acting in the opposite direction to the forward thrust .
Reverse propeller thrust is used where a large aircraft is landed, in reducing
the length of landing run.
8. Beta Control : A propeller which allows the manual repositioning of
the propeller blade angle beyond the normal low pitch stop. Used most often
in taxiing, where thrust is manually controlled by adjusting blade angle with
the power lever.
CROSSWIND CIRCUITS
Aim
• To take-off, fly a circuit and land using a
runway, which is experiencing a significant
crosswind component.
Application
• Practise take-off, landing and circuit
procedures in crosswind.
Revision
• Crosswind Component
• Weathercock
• Traffic Awareness
• Crosswind Circuit
Principles
Crosswind
Circuit
Standard
Circuit
Airmanship
• Lookout
• Positive aircraft and throttle handling
• Maintain rectangular circuit pattern
• If in doubt - go-around
• Correct handover/takeover procedure
TAKE-OFF
Slight forward pressure to hold
aircraft firmly on the runway.
Ailerons into wind to keep wings
level
Opposite rudder to maintain
centreline tracking
Reduce control deflections as
airspeed increases.
Lift off cleanly and adopt climb
attitude
Remove “crossed-controls” to allow
aircraft to weathercock into wind to
maintain centreline tracking
Fast Leg – need to fly
accurately and promptly
considering turn onto
downwind.
As per normal, but pay
close attention to drift
to achieve parallel
tracking.
Slow Leg – may require
more power to maintain
standard profile.
Also less drift compared
to wind down the
runway.
Hold drift heading to maintain centreline
tracking down to round-out height,
keeping aircraft in balance at all times
LANDING – similar to take-off
“Wing Down” to control drift
(ailerons)
Rudder to align nose with
runway
Hold-off as per normal
DON’T RELAX
Increase aileron
deflection into wind
as airspeed
reduces
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RMIT Flight Training RMIT飛行訓練(83)
