Van's Aircraft RV 12iS, Дополнение к руководству по летной подготовке

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Revision: 4 Date:
09/08/20
RV-12iS Flight Training Supplement 12-2
SECTION XII
DESCENT
INDEX
NORMAL RATE DESCENT 12-1
EXPEDITED DESCENT 12-1
NORMAL RATE DESCENT
See POH Checklist
For normal operations select a power setting and pitch attitude that will yield a 500 ft/min rate of descent while
maintaining airspeed between 100 and 110 KIAS. For cross-country operations, the most efficient way to operate
the aircraft is to maintain indicated air speed but with power reduced so as to yield the desired descent rate. It is
most efficient to select a slower descent rate over a longer time than to descend at a high rate over a short time.
Additionally, a slower rate/longer duration descent will help keep the oil temperature from dropping below the
minimum allowed.
When descending for landing, initiation of descent should be selected so as to arrive over the landing pattern entry
point at proper traffic pattern altitude and target airspeed. When planning a descent from cruise altitude to the
airport traffic pattern, use time to destination to calculate a realistic and comfortable rate (500ft/min).
When available, use the Vertical navigation (VNAV) function of the EFIS to perform a stable descent if terrain,
airspace and/or weather permit.
EXPEDITED DESCENT
For situations requiring an expedited descent, placing the aircraft into a slip will increase drag and allow for a more
rapid descent without exceeding airspeed limits. Another technique for expedited descent is to close the throttle
and slow to approximately 80 KIAS and place the aircraft in a 50-60 degree bank descending spiral. The loss of
vertical lift allows for a more rapid descent without building-up excess speed.
Clear the engine every 1000’ with a
short application of power.