Chapter 1- Fuzes Flashcards
Delay
Function time longer than .0005 second
External evidence of arming (EEA)
Fuse is PHYSICALLY determined to be safe or armed.
Functioning time
Time required for a fuze to detonate after impact, or a preset time.
Instantaneous
.0003 second or less
Nondelay
0.0003 - 0.0005 second
Proximity (VT)
Action that causes a fuze to detonate before impact when any substantial object is detected at a predetermined distance from a fuze.
Safe air travel (SAT)
The distance along the trajectory that a bomb travels from the releasing aircraft in an unarmed condition.
What are the 2 classes of fuzes?
Mechanical and electrical
How does a mechanical fuze work?
A mechanical force (bomb impacting target) drives a striker into a sensitive detonator,
Detonator ignites a train of explosions, eventually firing the main or filler charge
How is an electrical fuze initiated
By an electrical impulse
Where can you find the latest information about fuzes
Aircraft bombs, fuzes, and associated components, NAVAIR 11-5A-17
Airborne Bomb and Rocket Fuze Manual, NAVAIR 11-1F-2
What is a MK 339 Mod 1 and what are its characteristics?
A mechanical fuze that is used with dispenser weapons
- Nose-Mounted
- Air-enabling
- Detonator-safe
How can you tell if the MK 339 Mod 1 is in a safe condition
The green foil is intact
How can you tell when the MK 339 Mod 1 is armed?
The green foil is pierced by the indicator pin
What is the FMU-143 (series) fuze used with?
With the GBU-24 (series)
