Originally posted by ShadowXIX
The THELS can run out of shots just like any other weapon it uses a chemical reaction to create the power to fire the laser after a certain number of
shots the system must be refueled before it can fire again. Also the THELS version that is mounted in the 747 was designed to shoot down large
missiles like scuds and other types of longer range missles
Shadow,
You are absolutely right, in fact each THEL shot costs about $8,000, however - when used for intercepting longer range munitions such as Scuds, that
$8,000 shot is very economical compared to kinetic-energy missiles such as the Patriot PAC-3, which currently costs $3.8 million a shot.
THEL Operational Scenario
The Tactical High Energy Laser uses a high-energy,
deuterium fluoride chemical laser to protect against attack by short range unguided
(ballistic flying) rockets.
In a typical engagement scenario, a rocket is launched toward the defended area. Upon detection by the THEL fire control radar the radar establishes
trajectory information about the incoming rocket, then "hands off" the target to the "Pointer-Tracker Subsystem". The PTS tracks the target
optically, then begins a "fine tracking" process for THEL's beam director, which then places THEL's high-energy laser on target. The energy of the
laser causes intense heating of the target, which causes its warhead to explode.
History of Military Chemical Lasers
The military began exploring the combat potential of lasers in the 1960s. At that time, researchers focused almost exclusively on chemically activated
lasers. Tests at the High Energy Laser Systems Test Facility (HELSTF) here at White Sands have produced impressive results ever since. As early as
1978, a chemical laser blasted through a tethered helicopter.
The THEL became the first laser weapon to track and destroy multiple artillery projectiles in flight. It has destroyed rockets, mortars and artillery
shells in mid-flight, but artillery shells have demonstrated that they are harder to track and to destroy because rockets are larger and pressurized;
the THEL will be tested on larger missiles further in it's development.
The Future: From Chemical to Solid State
The ultimate goal for the Army’s laser program, however, is a 100-kilowatt solid-state laser. Solid-state are all-electric lasers. Unlike chemical
lasers, which require a chemical reaction, the solid-state devices use electric power to convert the energy of the crystal into laser power. In the
future, when the Army develops a large solid-state laser, the cost per kill would be measured in cents, not dollars.
For the future combat system, the Army’s next-generation tank, the goal is to have a 100-kilowatt, un-cooled, solid-state laser as both an offensive
and defensive weapon.
TRW engineer working on THEL
Night video still of THEL in operation.
Documentation:
Sept. 2001 National Defense Magazine
July 2002 Defense Update magazine
israeli-weapons.com
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