M-551
SHERIDAN AR/AAV USA
Developed
in 1959 to replace the M-41 Walker Bulldog light tank (early 1950s), the
Sheridan is a “mixed bag” which has proven to be quite efficient when used as
intended. A lightweight, lightly armored recon vehicle (the AR above) and as an
air-droppable, and air-transportable assault vehicle (the AAV above), it
doesn’t fit neatly into the classic definition of a tank. The weapon system is
the same as the much more expensive MBT-70: a 152-mm gun that can shoot conventional
152-mm High Explosive rounds, or IR Shillelagh missiles (20 conventional
rounds, 10 missiles). Constructed of aluminum, the Sheridan wasn’t well
received by US troops in Vietnam, as the light armor made it vulnerable to
small arms fire, especially RPGs (Rocket Propelled Grenades). But light armor
meant that the Sheridan could get out of trouble quickly as long as the tracks
and engines weren’t shot up. As an AR/AAV, the Sheridan failed to stay in the
Army very long. Only the 82nd airborne used them for a while, and
retired them in the late 1990s.
DATA:
Length:
20 ft, 7n in.
Width:
9 ft, 2 in.
Height:
9 ft, 7 in.
Weight:
34,826 lbs
Crew:
4
Engine:
Detroit Diesel 6V53T Diesel, 300 hp
Armament:
one 152-mm gun/launcher, one 50-cal MG, and one 30-cal MG
Armor:
classified
Speed:
app 50 mph on road, 4 mph in water
Range: 375 miles