Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
33 Cards in this Set
- Front
- Back
|
what does the ANAV system do? |
provides present position, guidance in both horizontal and vertical planes, air data and nav mode management |
|
|
what are the backup instruments (5)? |
-artificial horizon -airspeed indicator -clock -compass - barometric altimeter |
|
|
what are the components in the ANAV system |
-RA -DVS -2 IRS -2 ADS |
|
|
What is the purpose of the RNAV |
to provide bearing and distance from ground beacons, landing guidance in both horizontal and vertical planes, terrain warning, direction finding and homing capabilities |
|
|
what are the components in the RNAV? |
-ILS -ADF -PLS -EGPWS |
|
|
What is the purpose of the ADS? |
computes air data from physical measurements (pressure and temp). Achieved Via the ADC which collects the measurements from the pitots (pressure) and the temp probe (temperature). |
|
|
what are the components in the ADS? |
-ADS -Temp probe -pitot static probes x 2 |
|
|
What does the RA do? |
computes height above ground level |
|
|
What are the components of RA? |
-Transceiver: sends signals to the ground and analyses the reflected signal to determine height above the ground. Inside tailboom near DVS -2 antennas located underside of tailboom near DVS |
|
|
What is the DVS? |
A four beam doppler sensor which measures ground velocity components. consists of LRU under tail boom |
|
|
What does the IRS do? |
it computes altitude, nav, guidance data. It incorporates GPS to enhance computation |
|
|
Where is the IRS GPS antenna located? |
upper side of the tailboom on the tail driveshaft cover. |
|
|
What has to happen before IRS enters into NAV mode? |
IRS has to determine the helicopters altitude and position with reference to the earth. This is achieved through Alignment. Once alignment is successfully completed the A/C present position is initialised so the IRS can go into NAV mode |
|
|
what are the phases in Ground alignment? |
-levelling phase to determine local vertical -coarse alignment to rapidly determine a rough heading -fine alignment to perform refinement of the heading |
|
|
Which are the 3 data that IRS compute? |
-critical data -GPS data -optimal data |
|
|
what are the components in the Landing system? |
-MMR -DME |
|
|
What does the MMR do? |
provides VOR, ILS, MARKER, MLS functions |
|
|
where is MMR 1 and MMR 2 located? |
MMR 1 in NAB and MMR in AAB |
|
|
Where are the VOR antennas located? |
either side of the tailboom |
|
|
Where is the Glideslope antenna? |
upper inside of the weather radar dome |
|
|
Where is the marker beacon antenna? |
mounted under the fuselage near the RH MLG |
|
|
What does the DME do? |
provides distance measurement and 'time to go' info |
|
|
where is the DME antennas and transceiver? |
1 below apu exhaust 1 left underside of fuselage beside fuel dump pipe transceiver in NAB |
|
|
what are the components in the ADF? |
-receiver -combined sense/loop antenna |
|
|
where is the ADF antenna and receiver? |
receiver in the RAB and the antenna under the fuselage at the rear |
|
|
What does the PLS do? |
Allows the crew to carry out civil SAR missions. locates transmissions from comms transceivers and ELTs |
|
|
what are the components in the PLS? |
-Locator Processor Transmitter -active DF antenna -UHF antenna |
|
|
where is the UHF and PLS antennas located? |
UHF antenna is on the lower front LH side of the helicopter and the PLS antenna is located under front fuselage on the lubber line |
|
|
What does the EGPWS do? |
helps prevent accidents caused by controlled Flight into terrain. It alerts the crew when the helicopter is getting to close to something |
|
|
where is the EGPWS compuer and GPS antenna located? |
comp in RAB and antenna on top of tailboom |
|
|
What does the ELT do? |
transmits and alerts in case of an emergency to help locate the NH90 |
|
|
What are the components for the ELT? |
Transmitter mounting bracket aux antenna (on ELT) |
|
|
where is the ELT and outside antenna located? |
ELT is in rear RH cabin and outside antenna is aft of RH engine exhaust |
