Bomb, Fuzes And Assiociates Components Flashcards
What is Arming Time?
Amount of time or number of vane revolutions needed for firing train
Also known as safe separation
What is Delay?
Longer than 0.0005 seconds
What is External evidence of arming?
Fuse is physically determined to be in safe or armed condition
What is functioning time?
Time required for a fuse to detonate after impact, or preset time
What is instantaneous?
0.0003 to 0.0005 seconds
What is proximity?
Causes a fuze to detonate before impact
What is safe air travel?
Distance along the trajectory that a bomb travels from a he releasing aircraft in an unarmed condition
What general classes are fixes divided into?
Mechanical
Electrical
What are the subdivisions of fuses?
Impact Mechanical time Proximity Hydrostatic pressure Long delay
What are the safety features?
Detonator safe
Shear safe
Delay arming
What does shear safe mean?
Does not become armed if it’s arming mechanism is damaged
What does delay arming mean?
Mechanically or electrically slows the arming of the fuze
What pub is aircraft bombs and fuses found in?
11-15A-17
What pub is airborne bombs and rockets found in?
11-1F-2
What mechanical time fuze are used with dispenser weapons?
MK 339 MOD 1
What is the purpose of the MK 339 MOD 1 time fuze?
To initiate the linear shapes charges
What two arming wires does the MK 339 use?
Primary mode
Option mode
What are the three types of electrical fuses the navy uses?
FMU
FZU
DSU
What can you use the FMU 143 fuze with?
GBU-24 series
GBU-31 series
How is the FMU 143 initiated?
FZU-32B/B
What is the FMU 139?
Are an electronic impact or impact delay fuze
What is the FMU 139 used with?
MK 80/ BLU 100 series including laser guided
What are the three arming times for the FMU 139?
- 6
- 5
- 0
What’s the purpose of a MK 122 arming safety switch?
Provides an open circuit and a radiation hazard shield to prevent electromagnetic radiation from entering the fuze circuits
What are the two types of FZU?
FZU 48
FZU 61/62 series
What eliminates the need for a MK 3 arming wire?
FZU 61/B lanyard
What fusing unit is used for the BRU 33/36/55 racks?
FZU 62/B and FZU 61/B
What does the DSU-38 proximity sensor do?
Detects, acquires and tracks energy reflected from laser designated target
APS
Selectable height of burst
What bomb Unit is the FMU-140 A/B used with?
CBU-99 Rockeye
CBU-78 Gator
What fuze is only compatible with the GBU-31?
FMU-167/B Hard target void sensing fuze
How are thermally protected bombs identified?
Two yellow bands and the words thermally protected
Mk82/Blu111
500lbs
Mk83/Blu110
1000lbs
Mk84/Blu117
2000lbs
How do you identify a PBXN loaded bomb?
Three yellow bands on the nose
What’s special about the BLU-109?
HTP
What are the two major nose plugs?
Solid nose plug (MXU-735) HTP
Ogive nose plug
What are the two types of fins?
Conical (BSU-33)
Retarder(BSU-85)
How many screws does the BSU-85 have?
8 set screws
What are the three modes of delivery?
Retarded
Unretarded
Inflight selection
Retarder mode
Slow down the weapon
Unretarded mode
Free fall
