FABMS and early versions of SAM D

uk 75

uk 75

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One of the most interesting periods in the development of the US Army missile systems is that between 1960 and 1975 or so when the US envisaged self propelled tracked missile systems very similar to those deployed by the USSR.

Eventually the SAM D (later Patriot) emerged as a tracked launcher system, though this was dropped in favour of a more cost effective truck mounted version.

FABMDS was going to be a larger version of the Hawk type missile based on the contemporary GOER vehicle family.

The Redstone Military archive used to have some useful online material but this is now only available on a charged basis.

It would be interesting to know if anyone has access to models or photos of these systems that have not appeared elsewhere.

Tracked SAM D is well covered in early editions of jane's Weapons and elsewhere but FABMDS is not as far as I know.

UK 75
 
I've only ever seen one picture of the radar, and nothing on the launcher. SAM-D came in right around the time the US Army began shifting many types of equipment from tracked/armored platforms onto wheeled soft skins so its no surprise such a lavish concept of moving around a bunch of electronics thirty miles behind the front lines died out quickly. I think even without the Nam induced money crunch it still would have ended up wheeled anyway. Its not like Europe was lacking in paved roads.

Original source of picture is here, the file mostly talks about digital electronics
 

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Talking about early Patriot versions why were the early Patriot prototype missiles back in the 1970s launched from tubular launch-canisters while the production variants were launched from box-type canisters?
 
NMaude said:
Talking about early Patriot versions why were the early Patriot prototype missiles back in the 1970s launched from tubular launch-canisters while the production variants were launched from box-type canisters?
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Just a hypothetical, but a square box gives more space for strakes and fins, while allowing the rocket to be larger. Draw a square, then draw a circle that touches all 4 sides of that square.
 
NMaude said:
Talking about early Patriot versions why were the early Patriot prototype missiles back in the 1970s launched from tubular launch-canisters while the production variants were launched from box-type canisters?
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I don't know. But boxes have logistical advantages compared to tubes. They are stackable and do not roll around..
 
moin1900 said:
Here the FABMDS Transporter Erector Launcher
http://www.dtic.mil/dtic/tr/fulltext/u2/a434111.pdf
Here a little drawing of the tracked SAM-D launcher
http://sill-www.army.mil/ada-online/air-defense-trends/_docs/1969/jan.pdf
SAM-D
FABMDS
http://www.designation-systems.net/dusrm/app4/fabmds.html
Click to expand...
PDFs dont open..
Forum would likely want to see the SAM-D & FABMDS TELs if you can assist in that.
 
jsport said:
moin1900 said:
Here the FABMDS Transporter Erector Launcher
http://www.dtic.mil/dtic/tr/fulltext/u2/a434111.pdf
Here a little drawing of the tracked SAM-D launcher
http://sill-www.army.mil/ada-online/air-defense-trends/_docs/1969/jan.pdf
SAM-D
FABMDS
http://www.designation-systems.net/dusrm/app4/fabmds.html
Click to expand...
PDFs dont open..
Forum would likely want to see the SAM-D & FABMDS TELs if you can assist in that.
Click to expand...
The topmost link can be found here: https://apps.dtic.mil/sti/citations/ADA434111
 
 
NMaude said:
Good point however if that's the case then why do the SA-10/12/20/21 use cylindrical launch-tubes?
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Doesn't cold launch require the canister to pressurize during missile ejection? That would strongly favour a cylindrical cross section.
 
Trident said:
Doesn't cold launch require the canister to pressurize during missile ejection? That would strongly favour a cylindrical cross section.
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The canister itself doesn't pressurise, inside at the bottom of the canister there's a hemispherical piston beneath the missile's exhaust nozzle with a cold-gas generator between the piston and the hemispherical aft end-cap of the launch-canister. When the firing command is issued that gas-generator is fired and the gas it makes forces the piston upwards ejecting the missile from the canister.

Edit: The piston is a captive design so it doesn't pop out of the launch-tube.
 
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What I'd like to know is why the prototype Patriot missiles back in the early 70s used tubular launch-canisters like the SA-10/12/20/21 used instead of box-type canisters?
 
It is interesting to note that Soviet SA10 and later S300 and S400 missiles are not mounted on tracked vehicles either.
Was the US decision related to the performance of Hawk units with M548 in Germany?
The closest UK equivalent Bloodhound was never mounted on a tracked vehicle as it needed to be airportable.
 
Here's a cutaway diagram of an SA-12 in its' launch canister showing details of missile's ejector (The drawing is from an Air Power Australia article about the SA-10/12/20/23 system).
 

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uk 75 said:
It is interesting to note that Soviet SA10 and later S300 and S400 missiles are not mounted on tracked vehicles either.
Was the US decision related to the performance of Hawk units with M548 in Germany?
The closest UK equivalent Bloodhound was never mounted on a tracked vehicle as it needed to be airportable.
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S-300P, derivatives and S-400 belong to an entirely different family of systems, designed and built by a different design bureaus, with different missiles and radars to the S-300V series.

This divide is due to how the Soviet armed forces were organised, S-300P being intended as a SAM for the PVO (Soviet Air Defence Forces) with S-300V being used by the Army.

UK doesn't have an equivalent to this, Bloodhound greatly predates it, and is an Airforce system (hence is probably closest to the PVO systems) not an Army system.
 
NMaude said:
Good point however if that's the case then why do the SA-10/12/20/21 use cylindrical launch-tubes?
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I don't know. But engineering decisions always involve tradeoffs and conflicting requirements. A tube will be stronger than a box for a given amount of material.
 

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