ASALM

ASALM
Martin Marietta ASALM
Type	Air-to-surface missile
Place of origin	United States
Service history
Used by	United States Air Force
Specifications
Weight	2,700 pounds (1,200 kg)
Length	14 feet (4.3 m)
Warhead	W69 thermonuclear
Blast yield	200 kilotonnes of TNT (840 TJ)
Engine	Marquardt rocket/ramjet
Operational range	300 miles (480 km)
Speed	Mach 4.5+

The Advanced Strategic Air-Launched Missile (ASALM) was a medium-range strategic missile program, developed in the late 1970s for the United States Air Force. Intended for use in both the air-to-surface and anti-AWACS roles, the missile's development reached the stage of propulsion-system tests before being cancelled in 1980.

Development of the Advanced Strategic Air-Launched Missile was initiated in 1976. The ASALM was intended to replace the AGM-69 SRAM in United States Air Force service, providing improved speed and range over the earlier missile, as well as improved performance against hardened targets. In addition, the requirement specified that the ASALM should be capable of operating in a secondary air-to-air mode against AWACS radar-warning aircraft.Martin Marietta and McDonnell Douglas submitted proposals for the contract, the former's design using a Marquardt propulsion system; the latter's, one developed by United Technologies Corporation; the Martin Marietta design was favored by the Air Force

The size of ASALM was limited by the requirement that it use the same launchers as the earlier SRAM. The missile would be steered by small fins at the tail, but lacked wings; the shape of the body combined with the high flight speed were to provide sufficient lift.

Guidance was planned to be provided during mid-course flight by an inertial navigation system, while terminal guidance would use a dual-mode seeker. Propulsion would be provided by an integrated rocket-ramjet, which would act as a solid-fuel rocket during boost, with the rocket's casing, following exhaustion of its propellant and the ejection of the rocket nozzle and a fairing covering an air inlet, becoming a combustion chamber for an air-breathing ramjet, which was planned to use Shelldyne-H fuel. The missile was expected to be carried by the B-1 bomber, or alternatively by a developed version of the FB-111.