End Of Applied Flashcards
What are the two types of beam forming in DIFAR
Cardioid and limicon
Passive sonar equation
SE=SL-PL-AN-(RD)-DI
DI = 0 for p8
RD = 6.5 for p8
FOM
FOM=SL-AN-RD
What do you get from wentz Knutson curves
Predicted AN
What do you get form mimic wader curves
AN based on hz and depths
3 factors effecting velocity
Temp 6ft per 1f
Salinity 4.6ft per 1 part per thousand
Pressure 1.6ft per 100ft
Sound propagation paths in water
Surface duct, direct path, bottom bounce, deep sound channel, CZ
3 types of spreading and db loss
Cylindrical 3dB
Spherical 6db
Dipolar 12db
3 types of spreading and db loss
Cylindrical 3dB
Spherical 6db
Dipolar 12db
3 layer ocean model
Mixed layer
Thermocline
Deep water
Define sound
The periodic variation in pressure in an elastic medium
What is SLD
The maximum velocity in the first 1000ft
HALT
High away low towards
Define ocean fronts
Boundary between two distinct water masses
3 factors effecting detectability
Resolution, integration normalisation
Merch rpm bracket
Small 210+ medium 130-210
Large 50-90
Two types of AN
Manmade and natural
What is ANR and what does it do
Active noise reduction
Suppresses unwanted noise to focus on target noise
Equipment in the LSJ pocket
5X 50ml water
16mm flares
First aid kit
Heliograph
Razor blades
Ground air codes
Foil blanket
LMD
Batteries
Cutter
Components of LSJ
2 oral inflation tubes
Antenna
Water activated lights
Whistle
Lifeline and retaining toggle
Lifting brackets
Reflecting tape
LMD modes
Strobe, blue, infrared
EPLB modes
On, armed, off, test
When would the EPLB automatically activate
11g impact
EPLB Freq
121.5, 243, 406 mhz
How to manually inflate LSJ
2 oral inflation tubes
16m flares colours and symbols
Green triangle
White line
Red Cross
Flares height and duration
5-7 seconds 200ft
Other flares and function
Day night flares
Ribbed for night
How many fire extinguishers
6
How many oxygen bottles
5
How many quick dons
21 spread between mid and aft
Warning and notes for toilet oxygen
Warning: should not be warn for fire fighting.
Note: bayonet must be connected
How many ms10 are fitted and capacity
2 or 3 depending on capacity
10
When would extra ms10 be needed
Flying further than 50nm from land
Where do you attach the escape rope on aft door
Top right of the aft door
(From Jack can’t ditch in aft door though?)
Frequency range RF channels
136-173.5 mhz
How many beams difar beam forms
5
North
South
East
West
Max
Blocked rf channel
57,58
Channels that can be used within 50nm of land
1-31 (17)
How much life for bathy
12mins 9mins print
Bathy depth
2625
Cable drop speed for bathy
5ft per sec
Cable depths for difar
45 CSO
90
200
400
1000
Modes selectable for difar
CSO,CO,XCO,DIFAR
Depths for dicass
50 150 300
90 400 1500
Sonic freq and dbs for dicass
6500 199
7500 200
8500 201
9500 201
How many codes does SUS have
5
What Db does SUS produce
160db
How many seconds does SUS last
70
TSD bouy colours
Green, local
White, tuned
Yellow, degraded
Blue, off board
Red, failed
Shaded grey, scuttled
Rf frequency spacing
0.375mhz
Freq ranges for Difar modes
CSO 30hz-5000hz
Difar 5hz-2400
CO 5-20000hz
XCO 5-40000hz
(20/40khz)
