TERRAIN AWARENESS AND WARNING SYSTEM
СРППЗ-2000
Description
СРППЗ-2000 system is designed to timely warn the crew of the aircraft, using voice and visual alarms, in the event of flight situations, the development of which may lead to an unintentional clash of the aircraft with earth (water) surface, as well as to increase awareness of flight crew about the elements of the earth's surface and / or artificial obstacles that represent a potential threat on its current or projected path.
- performance profile:
а) functions of the ground proximity warning system (GPWS);
b) functions of the early ground proximity warning system (EGPWS), inclusive premature descent alarm;
c) voice massages formation.
- modes of GPWS function:
а) mode 1 - Excessive descent rate;
b) mode 2 - Excessive closure to terrain;
c) mode 3 - Altitude loss after takeoff;
d) mode 4 - Unsafe terrain clearance;
e) mode 5 - Excessive deviation below glideslope;
f) mode 6 - Excessive deviation between relative barometric altitude and true altitude(in QFE mode);
- modes of EGPWS functions:
a) long-range early warning of insufficient height over the obstacle in the direction of flight;
b) warning about a premature descent at landing approach;
c) provides to the display of visual environment information about the underlying surface in the field of view and obstacles;
- provides of notification messages:
а) at crossing of the decision height during descent;
b) while passing of the series of predefined fixed heights at the descent;
c) at the excess of established bank angle limit value.
- voice alarm languages: Russian or English;
- system database includes information about underlying ground profile, airports and artificial obstacles;
DEVICE COMPONENTS
- БВ СРППЗ-2000 computer unit - 1 pc;
- СРППЗ-2000 frame - 1 pc;
- spare parts kit - 1 kit.
- instruction manuals - 1 kit.
Specification
- system input interfaces:
a) twelve digital interfaces according to ARINC-429 with clock frequency of 12.5 kHz or 100 kHz;
b) discrete command inputs by types:
1) nine inputs of "+27V/Gnd" type;
2) eighteen inputs with levels: "+27V/Open", or "Gnd/Open";
c) three channels to receive signals in resolver format;
d) three channels to receive signals from potentiometric sensors;
e) three inputs to receive DC signals
f) one digital interface RS-232;
- system output interfaces:
a) two digital interfaces according to ARINC-429 with clock frequency of 12.5 kHz;
b) one digital interface according to ARINC-708A with clock frequency of 1 MHz;
c) dicrete command outputs by types:
1) twelve outputs of "Gnd/Open" type;
2) two outputs of "+27V/Open" type;
d) one balanced two-wire audio output for delivery of voice warnings to flight intercom. Maximum output power 100 mW into 600 Ohm load.
- system readiness to operation time from the moment of power on is not more than 10 s;
- run time - at least 24 hours;
- MTBF - 10000 hours;
- overall dimensions (Length x Widht x Height), mm - 435 x 33 x 222;
- system weight not more than 2.4 kg, including:
а) БВ СРППЗ-2000 - not more than 1.6 kg;
b) СРППЗ-2000 frame - not more than 0.8 kg.
OPERATING CONDITIONS
- sinusoidal vibration: vibration displacement amplitude - 5 mm, vibration acceleration amplitude - 49 m/s2 (5g), frequency range - from 5 to 2000 Hz;
- multiple mechanical shocks: shock acceleration peak value - 58.8 m/s2 (6g), duration of action - 20 ms;
- linear acceleration - 49 m/s2 (5g);
- operating temperature range: – 55 °C…+55 °C;
- maximum operating temperature: +70 °C, 30 min;
- storage temperature range: – 60 °C…+85 °C;
- increased humidity - not more than 98 % at an ambient temperature of 40 °C.