Bomb, Fuzes And Assiociates Components Flashcards by DaNaisha Gwyn

What is Arming Time?

Amount of time or number of vane revolutions needed for firing train

Also known as safe separation

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What is Delay?

Longer than 0.0005 seconds

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What is External evidence of arming?

Fuse is physically determined to be in safe or armed condition

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What is functioning time?

Time required for a fuse to detonate after impact, or preset time

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What is instantaneous?

0.0003 to 0.0005 seconds

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What is proximity?

Causes a fuze to detonate before impact

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What is safe air travel?

Distance along the trajectory that a bomb travels from a he releasing aircraft in an unarmed condition

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What general classes are fixes divided into?

Mechanical

Electrical

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What are the subdivisions of fuses?

Impact
Mechanical time
Proximity
Hydrostatic pressure
Long delay

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What are the safety features?

Detonator safe
Shear safe
Delay arming

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What does shear safe mean?

Does not become armed if it’s arming mechanism is damaged

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What does delay arming mean?

Mechanically or electrically slows the arming of the fuze

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What pub is aircraft bombs and fuses found in?

11-15A-17

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What pub is airborne bombs and rockets found in?

11-1F-2

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What mechanical time fuze are used with dispenser weapons?

MK 339 MOD 1

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What is the purpose of the MK 339 MOD 1 time fuze?

To initiate the linear shapes charges

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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?

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