ATR 42 Model : 500
SYSTEMS DESCRIPTION
POWER PLANT
P 4
NOV 99
001
1.16
.
20
20.3 LUBRICATION SYSTEM
(See schematic p 11/12)
Synthetic oil specification MIL-L-23699.
A single oil system serves the turbo machinery, the reduction gear box and the
propeller pitch change system.
- Oil tank
Oil is contained in a 14.4 L tank
1
. A filter cap is provided on the tank. Quantity
indication is checked by sight glass (or by a dipstick) on the side of the tank.
- Pressure system
A gear pump
2
driven by the accessory gear box supplies oil through an air cooler
3
mounted in the nacelle and a filter
4
both fitted with by-passes in case of
clogging.
RGB oil is also cooled in a fuel heater,
5
as well as in the FCOC
6
. An oil
temperature sensor is provided.
Oil pressure is controlled by a regulating valve
7
. A low temp. valve
8
is
provided to eliminate damaging pressures surges on cold starts. A pressure
transducer
9
and a low pressure switch
10
are installed.
- Scavenge system
Scavenging is blown down or gravity drained except for N
°
6 and 7 bearing cavity and
the reduction gear box, on which gear pumps are used.
20.4 IGNITION SYSTEM
Each engine is equipped with a high energy ignition system. It consists of two engine
mounted ignition exciters (A and B) powered by the DC ESS BUS and two spark
igniters, one for each ignition exciter. Ignition cycle includes two phases. During 25 sec,
the intensity is 5 to 6 sparks/sec and then, the intensity becomes 1 spark/sec.
The engine ignition system provides ignition for :
- On ground starting using exciter A, exciter B, or exciters A + B (according to ENG
START rotary selector position).
Note : Using exciter A or exciter B may allow to detect an hidden failure.
- In flight starting using exciters A + B regardless of start selection.
In addition, for each engine, in case of NH drop below 60 %, exciters A + B are
automatically activated. This action is inhibited if :
- NH drops below 30 %, or
- EEC is deselected, or
- CL is set on feather or fuel S/O position, or
- On the failed engine in case of ATPCS sequence.
Note : When EEC is deselected, exciters A + B can manually be activated, using the
MAN IGN guarded push-button.
AA
R
R
AviationLearning.net
01/07//2018 REV 1 These notes are not revised after issue For Training Purposes Only
Page 694 of 764
Содержание 42-300
Страница 20: ...ATR 42 300 AIRCRAFT HANDLING MANUAL AIRCRAFT SERVICING ...
Страница 21: ...ATR 42 300 AIRCRAFT HANDLING MANUAL AIRCRAFT SERVICING ...
Страница 25: ...Cargo Compartment Large Cargo Door ...
Страница 100: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 72 of 764 ...
Страница 101: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 73 of 764 ...
Страница 102: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 74 of 764 ...
Страница 103: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 75 of 764 ...
Страница 104: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 76 of 764 ...
Страница 105: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 77 of 764 ...
Страница 106: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 78 of 764 ...
Страница 107: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 79 of 764 ...
Страница 108: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 80 of 764 ...
Страница 109: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 81 of 764 ...
Страница 110: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 82 of 764 ...
Страница 112: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 84 of 764 ...
Страница 113: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 85 of 764 ...
Страница 114: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 86 of 764 ...
Страница 116: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 88 of 764 ...
Страница 117: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 89 of 764 ...
Страница 118: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 90 of 764 ...
Страница 119: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 91 of 764 ...
Страница 121: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 93 of 764 ...
Страница 123: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 95 of 764 ...
Страница 124: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 96 of 764 ...
Страница 125: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 97 of 764 ...
Страница 126: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 98 of 764 ...
Страница 127: ...AviationLearning net 01 07 2018 REV 1 These notes are not revised after issue For Training Purposes Only Page 99 of 764 ...