Hawker Beechcraft Hawker 800XP, Руководство по эксплуатации для пилотов

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Page 8-15
Pilot’s Operating Manual
Revision A2: Nov, 2004
Sub-section 8
LANDING GEAR
Hawker 800XP Pro Line 21
Section III - SYSTEMS DESCRIPTION
WHEELS and BRAKES
LOCATION of CONTROLS and INDICATORS
MAIN WHEELS
The main landing gears each have two identical wheels with tubeless tires. Each wheel contains a
fusible plug which releases air from the tire in the event of excessive wheel heat.
Each pair of wheels is mounted on a staggered stub axle so that the outer wheel is slightly forward of
the inner wheel. During retraction, the gear twists to bring the inner wheel directly over the outer wheel.
This action permits the wheels to be stowed in a wheel well of the smallest possible size.
NOSE WHEELS
The nose landing gear has two identical wheels with tubeless tires rotating on a common axle.
WHEEL BRAKES
Normal System Operation
Main hydraulic system power is used to operate calliper-type disc brakes via Maxaret anti-skid units.
Master cylinders, operated by toe brake pedals through spring-struts, provide straight line and
differential braking during normal and emergency operation. With the WHEEL BRAKE lever fully
forward, main hydraulic system pressure, backed by the main accumulator, passes to a brake control
valve via a main reducing valve. The control valve, in response to movement of the master cylinders,
directs the related pressure through modulator units and Maxaret units to each brake unit.
Wheel Brake Lever (Figure 7)
Selection of braking for normal, emergency and parking use is controlled by a WHEEL BRAKE lever
moving over a notched rack between a NORMAL mark (fully forward) and a rearward PARK BRAKE
section.
An EMERGY position (first rearward notch) is marked in red. The WHEEL BRAKE lever is held in the
emergency position and in progressive parking positions by a pawl engaging into the notched rack. A
push button on the WHEEL BRAKE lever releases the pawl to permit movement of the lever from the
EMERGY or PARK BRAKE positions. The lever can be moved rearwards from NORMAL to EMERGY
without releasing the pawl.
Item Location
WHEEL BRAKE lever (Figure 7) Right side of center control pedestal
BRAKES (2) and SUPPLY combined hydraulic pressure
indicator (Figure 8) Center instrument panel below the
MWS panel
WHEEL BRAKE EMERG annunciators L and R
(Figure 8) Right of combined hydraulic pres-
sure indicator