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* 4. RRPM — Set as required.
TM 1-1520-240-10
8-2-12
Figure 8-2-1. Taxi Director and Blade Watcher Positions
TM 1-1520-240-10
8-2-13
8-2-23. Hover Check.
Perform the following check at a hover.
1. Flight controls — Check flight controls for correct
response.
2. Systems instruments — Check normal.
3. Flight instruments — Check as required.
a. VSI, barometric and radar altimeters —
Indicate climb and descent.
b. Turn pointers, heading indicators and
magnetic compass — Indicate turns right
and left.
c. Slip indicator — Ball free in race.
NOTE
Rapid rotation of the pitch and roll trim knobs
on the attitude indicator may cause abrupt
pitch and roll attitude changes with AFCS on.
d. Attitude Indicator — Indicate nose high,
nose low, banks right and left.
e. Airspeed indicator — Check.
4. LCTS — Check retracted.
F 5. GROUND CONTACT indicating lights check
— Both off.
6. AFCS — Check as follows: (First flight of
day).
a. SYSTEM SEL switch — NO. 1 Check
helicopter stable with no abrupt engagement
error. Check NO. 2 AFCS
OFF caution on.
b. SYSTEM SEL switch — NO. 2 Check
helicopter stable with no abrupt engagement
error. Check NO. 1 AFCS OFF
caution on.
c. SYSTEM SEL switch — Both. Check helicopter
stable with no abrupt engagement
error. Check both AFCS OFF caution
capsules extinguished.
7. 712 HIT/ 714A PAT — Perform as required.
8. Power Check — Perform as required.
8-2-24. Before Takeoff.
* 1. Systems — Check indications of the following:
a. Rotor — Check as required.
b. Torque.
c. Engine.
d. Transmission.
e. Fuel.
f. 712 Master caution panel.
g. 714A Caution/Advisory panel.
* 2. PARKING BRAKE — As required.
* 3. AFCS SYSTEM SEL switch — As required.
* 4. CYCLIC TRIM switch — Check.
* 5. SWIVEL switch — LOCK.
* 6. Transponder — As required.
F* 7. Crew, passengers, and mission equipment
— Check.
8-2-25. VMC Takeoff.
Refer to Aircrew Training Manual (ATM).
8-2-26. Hover.
Refer to Aircrew Training Manual (ATM). To engage radar
altitude hold perform the following:
WARNING
Do not use radar altitude hold in forward
flight over terrain. It may not provide
adequate terrain clearance in rapidly
changing terrain. Use radar altitude hold
to maintain a constant absolute altitude
during hover or forward flight over water.
RAD ALT hold can be used to a maximum
of 1,500 feet absolute altitude.
a. Radar altimeter — ON. Check that pointer has
rotated from behind the mask, the digital display is lit, and
the OFF flag is out of view.
b. Fly to desired altitude.
c. RAD ALT select on AFCS panel — Press. Check
ENGAGED light ON. The radar altitude hold feature of
the AFCS will maintain a constant altitude.
d. To select another altitude, press the THRUST
CONT BRAKE TRIGGER. Fly to desired altitude and
release the THRUST CONT BRAKE TRIGGER. The altitude
at the moment the trigger is released will be the new
altitude.
TM 1-1520-240-10
8-2-14
Takeoff over water. Takeoff over water is begun from a
hover height of approximately 30 feet. Align the helicopter
with the desired takeoff course at a stabilized hover or
approximately 30 feet, or an altitude permitting safe obstacle
clearance. Smoothly apply forward cyclic pressure
to level the helicopter and begin acceleration into Effective
Translational Lift (ETL). Control rate of acceleration and
direction of flight with cyclic and altitude with thrust. As the
aircraft accelerates through ETL, establish a pitch attitude
and apply thrust that will result in a simultaneous gain in
altitude and airspeed. Continuous coordinated application
of control pressures is necessary to maintain trim, heading,
flight path, airspeed, and rate of climb.
8-2-27. Slingload.
Refer to Aircrew Training Manual (ATM).
8-2-28. Climb.
Refer to chapter 7 for recommended airspeeds, power
settings, and fuel flow.
8-2-29. Cruise Check.
CAUTION
Radar altitude (RAD ALT) hold can only be
used in forward flight over water, it cannot
be used in forward flight over terrain.
CAUTION
Large pitch inputs will result in rapid gain
or loss of altitude. If altitude hold is on, an
over-torque condition can occur during
large pitch-down inputs. Monitor thrust
control movement and torquemeter during
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