HP d212 Manual do Utilizador Página 91

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FMS-D212-725-1
Page 3-15
• COPYRIGHT © 2007 BY DART AEROSPACE LTD •
This document is private and confidential and is supplied on the express condition that it is not to be used for any
purpose or copied or communicated to any other person without written permission from Dart Aerospace Ltd.
Revision:
D
TC Approved Date: 08.12.17
this type in powered flight will result in nose of helicopter swinging to right
(left side slip) and usually a roll of fuselage. Nose down attitude may also be
present. Severity of initial reaction will be affected by airspeed, H
D
, GW, CG
and power being used.
3.5.1.1 Loss of Tail Rotor Thrust at Hover
Procedure:
Close throttle immediately and make a hovering autorotation landing.
Yawing can be expected on touchdown.
3.5.1.2 Loss of Tail Rotor Thrust in Climb
Degree of right yaw upon failure will be greater than that expected in level
flight due to higher power and antitorque settings.
Procedure:
Close throttle and lower collective immediately. Establish a glide speed
slightly above normal autorotation approach speed.
If a turn is required to reach a more desirable place to land or to align into
wind, make it to right if possible. A turn to right can be more nearly
streamlined by use of a little power.
Once aligned for landing, yaw can be controlled in the following manner:
Right Yaw
If nose yaws right with power off, a pulse of up collective will produce more
friction in mast thrust bearings, creating a left moment. The greater the input
of pulse, the more the response will be.
WARNING
DO NOT ALLOW ROTOR RPM TO DECAY BELOW
MINIMUM LIMITS.
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