How does VT fuze work?
VT (Variable Time) The Allied fuze used constructive and destructive interference to detect its target. The design had four or five tubes. One tube was an oscillator connected to an antenna; it functioned as both a transmitter and an autodyne detector (receiver).
What is the VT fuse also called?
proximity fuze, also called Vt Fuze, orInfluence Fuze, an explosive ignition device used in bombs, artillery shells, and mines. The fuze senses when a target is close enough to be damaged or destroyed by the weapon’s explosion.
What is variable time fuze?
Variable Time Fuze A Variable Time (VT) fuze is an artillery fuze equipped with a system that emits radio signals as the projectile approaches the target. The echo, or return pulse, from the target causes the fuze to automatically detonate the projectile at a set altitude over the target.
How did anti aircraft shells work?
Anti-aircraft and other artillery rounds typically consist of an outer shell packed with a large amount of high explosives. These explosives are relatively stable, and require the activation of a fuse to detonate.
How does contact fuse work?
The contact fuze is set off when a series of connected crush switches that are placed on the exterior nose of the ordnance device make contact with the ground. The contact with solid ground activates the interior firing circuits which leads to the detonation of the ordnance device.
What is meant by proximity fuze?
Definition of proximity fuze : an electronic device that detonates a projectile within effective range of the target by means of the radio waves sent out from a tiny radio set in the nose of the projectile and reflected back to the set from the target.
What is fuse carrier?
A fuse carrier is the “cap” to the fuse holder. It carries the fuse into the holder and secures the fuse in place. One of the benefits of using a fuse carrier in conjunction with a fuse holder is that they are touchproof.
What kind of circuit is used in VT fuzes?
(Navy VT fuzes also use a modification of the Colpitts oscillator circuit.) The tuned circuit is comprised of the coil, the distributed capacity (largely between the antenna and the projectile body), and the inter-electrode capacities of the tube.
Does the VT fuze have a base detonating fuze without tracer?
However, the VT fuzed projectiles for the 6″/47 gun do have a base detonating fuze without tracer because of their probable use in shore bombardment.
What is the average radius of operation of VT fuzes?
The average radius of operation of current VT fuzes is about 75 feet, varying somewhat with the factors mentioned above. A good fire-control solution is especially well repaid in the case of VT fuzes.
What is VTVT fuzes for projectiles?
VT Fuzes For Projectiles and Spin-Stabilized Rockets, OP 1480, 1946, is a manual for proximity fuzes of WW II. As aircraft became faster and higher flying it became more difficult to hit them with gun fire. Proximity fuzes explode shells near to a target without hitting the target.