[sci.military] Information: Hellfire

megazone@wpi.WPI.EDU (MEGAZONE 23) (02/08/91)

From: megazone@wpi.WPI.EDU (MEGAZONE 23)

Information: Hellfire

>From The Encyclopedia of World Air Power, Cresent Books, 1980:
Type: air-to-surface missile
Powerplant: solid-propellant rocket motor
Performance: cruising speed subsonic; maximum range 3.75 miles (6 km)
Weight: 80lb (36 kg)
Dimensions: span 13in (33cm); length 5ft 9in (1.76 m); diameter 7in (18 cm)
Warhead: Firestone hollow-charge, weighing about 20lb (9 kg)
Operator: US Army 

"The Rockwell Hellfire is being developed to arm the Hughes AH-64 Advanced
Attack Helicopter, of which the US Army plans to buy 536 for delivery from 
1982; each will carry up to 16 missiles. Hellfire derives its name from
Heliborne Laser Fire-and-Forget, and the first version to be deployed will
indeed employ semi-active laser guidance. The seeker being developed by
Rockwell for this application is also planned to equip the AGM-65C version
of the Hughes Maverick, along with a variant of the GBU-15 glide bomb. 
Targets will be illuminated by laser designators mounted either in the launch
aircraft or on some other platform. In the former case the illuminator forms
part of the AH-64's TADS (Target Acquisition and Designation System). Ground-
based alternatives may include the Hughes PAQ-1 LTD (Laser Target Designator),
TVQ-2 GLLD (Ground Laser Locator Designator) or MULE (Modular Universal Laser
Equipment).
Hellfire has been developed from the Hornet test vehicle and may form the 
basis of other weapons. Alternative television and imaging infra-red terminal
seekers have been developed, and the same airframe could be adapted for 
defence suppression by fitting a dual-mode infra-red/radio-frequency homing
head. In this form it becomes ADSM (Air Defence Suppression Missile).
The AH-64 gunner/co-pilot uses TADS to search for, detect and recognise
targets to be attacked with Hellfire, employing the system's direct-view 
optics, television or forward-looking infra-red sensor either singly or in
combination. He can then track a target either manually or automatically and,
once it is being illuminated by a laser, launch a missile against it. The
advantage of using a designator on the ground or in another vehicle is that
the AH-64, unlike helicopters armed with the current generation of anti-tank
missiles, can escape from the target area as soon as a round has been fired."

>From The US War Machine, Salamander Books, 1983
Origin: Rockwell International, USA
Type: Laser-guided "fire and forget' missile
Propulsion: Thiokol TX657 reduced-smoke "all-boost" motor
Dimensions: Length 64in (1.626mm), body diameter 7in (178mm)
Launch weight: 98.86lb (44.84kg)
Range: Up to "several kilometers","far in excess of present anti-armor 
systems"
Flight speed: Transonic, quickly builds to Mach 1.17
Warhead: Firestone 20lb (9kg) 7in-diameter hollow charge

"A direct descendent of Rockwell's Hornet, this missile has applications
against hard point targets of all kinds, though it is officially described as
"the USA's next-generation anti-armor weapon system". Numerous development
firings took place from 1971 before full engineering go-ahead was received in
October 1976. It has semi-active laser homing with a very advanced seeker 
from Martin Marietta. The seeker has a Cassegrain telescope under the hemi-
spherical glass nose sending signals to the electronics section with micro-
processor logic. Steering is by four canard controls, and Hellfire can pull
13g at Mach 1.17. The US Under-Secretary of Defense, The Hon. William J.
Perry, said "This missile most often goes right through the center of the 
bull's eye". The primary carrier is the AH-64A Apache helicopter (16 rounds)
but Hellfire has flown on the Cobra and the A-10A Thunderbolt II fixed-wing
platform. Numerous Hellfires have been launched without prior lock-on, some
of them in rapid-fire homing in on different multiple targets using ground
designators with individual coding. The missile notices the laser radiation 
in flight, locks-on and homes at once. IOC will now be 1984, by which time
this missile will probably also be developed with "launch-and-leave" IIR
guidance. The first 680 rounds are being delivered before September 1984."

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