Hawker Beechcraft Hawker 800XP, Руководство по эксплуатации для пилотов, Страница: 186 / 923

Hawker 800XP Pro Line 21
Section III - SYSTEMS DESCRIPTION
Page 7-11
Sub-section 7
STALL WARNING/IDENTIFICATION
Pilot’s Operating Manual
Revision A2: Nov, 2004
STALL WARNING and IDENTIFICATION LOGIC (Figure 6)
Figure 6
Stall System Flow Logic
START
ANGLE OF ATTACK MONITORED BY
AIRFLOW ANGLE SENSOR
STALL WARNING TRIGGER POINT &
STALL IDENTIFICATION TRIGGER
POINT MODIFIED BY FLAP ANGLE
ANGLE
OF ATTACK
INCREASING?
NO
YES
Channel 1
SSU 1 CALCULATES APPROACHING
STALL AND INITIATES A
WARNING
SIGNAL
Channel 2
SSU 2 CALCULATES APPROACHING
STALL AND INITIATES A
WARNING
SIGNAL
WARNING SIGNAL FROM EITHER CHANNEL
DISCONNECTS AUTOPILOT AND OPERATES
ANGLE
OF ATTACK
INCREASING?
NO
YES
PREVENTIVE
ACTION TAKEN
BY PILOT
ANGLE OF ATTACK
STALL IDENTIFICATION TRIGGER POINT
MODIFIED BY RATE OF INCREASE OF
ANGLE OF ATTACK. SSU 1 AND/OR
SSU 2 INITIATE
IDENTIFICATION
SIGNAL
WHEN THE AIRPLANE IS AT POINT OF STALL
APPROACHING STALL SENSED AT
UNDER-WING PRESSURE VENTS
3rd CHANNEL SENSOR IS ACTIVATED
Channel 3
BOTH SSU IDENT
SIGNALS OPERATED
ONLY ONE SSU
IDENT SIGNAL
OPERATED
NEAR
TO STALL?
NO
3rd CHANNEL RELAY ENERGIZES
TO CONNECT ACTIVE SSU OUTPUT
TO BOTH STALL VALVES
YES
OR
STALL VALVE A
OPEN
AND
STICK PUSHER ACTIVATED
STALL VALVE B
OPEN
CONTINUES TO INCREASE
THE
STICK SHAKER