[sci.military] RAM missile system

wilson@b11.ingr.com (Jon Wilson) (07/24/90)

From: wilson@b11.ingr.com (Jon Wilson)


Does anyone know the status of the RAM (Rolling Airframe Missile) program? This
was a joint U.S./F.R.G./Danish project to develop a point-defense missile
based on the Sidewinder airframe. It was apparently not to be fin-stabilized
(thus the acronym), and was to complement the Phalanx for anti-missile defense.

Thanks

Jon Wilson
Intergraph Corporation
ingr!b11!wilson@uunet.uu.net

gwh%monsoon.Berkeley.EDU@ucbvax.Berkeley.EDU (George William Herbert) (07/25/90)

From: gwh%monsoon.Berkeley.EDU@ucbvax.Berkeley.EDU (George William Herbert)

RAM is in low-rate production.  It's begun operational 
deployment.  It looks like a good system, the tests seem to
have gone fine.


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tek@CS.UCLA.EDU (Ted Kim (Random Dude)) (07/26/90)

From: tek@CS.UCLA.EDU (Ted Kim (Random Dude))

In article <1990Jul23.202715.6737@cbnews.att.com> wilson@b11.ingr.com (Jon Wilson) writes:
>
>Does anyone know the status of the RAM (Rolling Airframe Missile)
>program? This was a joint U.S./F.R.G./Danish project to develop a
>point-defense missile based on the Sidewinder airframe. It was
>apparently not to be fin-stabilized (thus the acronym), and was to
>complement the Phalanx for anti-missile defense. 
>

Much of the following information comes from these sources:
   World_Naval_Weapon_Systems by Norman Friedman (Naval Institute Press) 
   "US Naval Aircraft and Weapon Developments in 1989" by Floyd Kennedy 
 in May 1989 issue of USNI Proceedings

	RIM-116A

Dimensions: 5" x 111"	Propulsion: solid-fuel rocket
Weight: 162 lbs.	Speed: Mach 2+
Warhead: 5 lbs.		Range: 5 nm

The RIM-116A was developed by US (General Dynamics), FRG (RAM GmBH)
and Denmark (Per Udsen). The Rolling Airframe Missile (RAM) uses the
Sidewinder motor, warhead and fuze and the Stinger IF seeker. It has a
new RF seeker with two antenae mounted on either side of the front of
the missile. As the acronymn implies, it is stabilized in flight by
spinning. The four tail fins are canted to spin the missile. The
forward two fins are used for control. 

The RAM flies homes initially on the incoming missile's RF emmisions
produced from its homing radar. The two antenae arrangement uses
inferometry methods. When it gets close enough it shifts to IR. This
type of guidance does not require a director and thus is "fire and
forget". 

There are three different RAM launchers. The EX-31 launcher (total
weight: 13,529 lbs.) has 21 missiles in it and has the same base and
turning mass as the Phalanx. The second is a modified NATO Sea Sparrow
launcher. Two of the Sea Sparrow cells are replaced by special cells
each holding five missiles. Finally, there is lightweight two arm
launcher called the RAM Alternate Launching system (RALS) (total
weight: 7200 lbs.). It has a total of 10 missiles. 

The US plans to use the EX-31 in 2 LCCs, 5 LHAs, 7 LPHs. The Sea
Sparrow launchers on carriers, LHDs, AORs and the Spruance class ships
will be modified to take the RAM. There is a proposal for the Danish
navy to use the RALS on the Standard Flex-300 and Niels Huel class
ships. Some drawings of planned Japanese frigates also show the RAM.

The RAM has been delayed about 5 years due to cost and test problems.
On 30 March 1987, US Secretary of Defense Casper Weinberger finally
certified that the missile had passed all tests and would enter
production. At the time in FY86, the first 500 missiles would cost
$145,000 each. The remaining 4500 planned missiles were predicted to
cost an average of $100,000.

In August 1987, a Memorandum of Understading was signed between the US
and FRG. It was agreed that General Dynamics and RAM GmBH would
compete for upto 70 percent of the annual combined purchase of the US
and FRG. At that time, the US planned to buy 30 launchers and the FRG
58 launchers for a total of 1923 missiles.

The US authorized low level production in FY86 (117 missiles), FY88
(240 missiles) and FY89 (260 missiles). In FY90, 520 missiles were
authorized at a total cost of $86.9 M. The FY91 budget request
included 405 RAMs at a total cost of $70.4 M.  

On 6 June 1989, the US awarded a low level production contract to
General Dynamics for 400 US missiles. On 1 October 1989, the FRG
awarded a similar contract to RAM GmBH for 350 missiles. In Decemeber
1989, the technical evaluation was complete. In January 1990, the
operational evaluation started. Full production authorization is
expected in August 1990. First full production deliveries are
scheduled for September 1991.


Ted Kim                           
UCLA Computer Science Department  Internet: tek@penzance.cs.ucla.edu
3804C Boelter Hall                UUCP:    ...!{uunet|ucbvax}!cs.ucla.edu!tek
Los Angeles, CA 90024		  Phone:   (213) 206-8696