Requirements and Classifications of fuzes Flashcards
Define Fuze
A Fuze is a device designed to function an item of ammunition under pre-determined circumstances.
Fuzes are classified according to what 3 categories?
FFP =
Filling
Function
Position
Fuzes classified by Function have what 3 types?
TIP =
Time
Impact
Proximity
Impact Fuzes are divided into which 3 categories?
Superquick, Graze and Delay (Non Delay)
What do the following stand for: VT PD BD PIBD T CT MT VT CVT SQ DEL
Variable Time Point Detonating Base Detonating Point Initiating Base Detonating Time Combustion Time Mechanical Time Variable Time Controlled Variable Time Super Quick Delay
What do the following stand for: MTSQ TSQ PDSQ MO ET
Mechanical Time Super Quick Time Super Quick Point Detonating Super Quick Multi Option Electronic Time
What are the forces that act upon Fuzes?
Set Back Set Forward Side Slap Centrifugal Creep Forward
Define Setback
The acceleration that occurs violently and suddenly on firing
Define centrifugal forces
Rotational forces in flight that builds rapidly on firing but decays slowly
Define Creep Forward
Deceleration, starts at the change over point and builds slowly
Define Side Slap
Forces acting 90 degrees to the axis of the bore, caused by the projectile not being centred
Define Armed
A fuze is armed once all safety restraints have been removed
What are 4 methods of function for mines/mechanical fuzes?
Pull
Pressure
Pressure Release
Tension Release
What are the two general requirements of Fuzes?
Safety
-For Storage and Transport
Reliability
-To high order when ordered
