[sci.military] Hummers, VT fuses

scameron@blake.acs.washington.edu (Scott Cameron) (04/14/90)

From: scameron@blake.acs.washington.edu (Scott Cameron)

The HMMWV (High Mobility Multipurpose Wheeled Vehicle) -- aka Hummer or
Humvee is manufactured by AM General.  It consists of a basic body config
onto which a variety of special systems can be mounted, allowing for a large
number of different variants.

The "basic configuration" -- the drive train and basic chassis has four
doors (actually openings where doors could be hung), windshield, a cargo
area, and what AMG says is a roll bar.  

Close off the back two door openings (appropriately shaped inserts are avail.
for this purpose) thus expanding the cargo area; fold down the back two seats,
install wooden troop seats along both sides, and put a ragtop and canvas doors
on the front two seats and you have the troop or cargo carrying model.  This
model is used by our Engineer line platoons as the plt. sgt's vehicle and 
prime mover for our electric tool trailer.  Motorized Infantry units mount 
.50 cals or the 40mm Automatic Grenade Launcher on the roll bar and use it
as their primary personnel carrier.  A canvas top for the rear of the vehicle
is also available to protect (or at least conceal) the troops in the back.

You can also put a four-place ragtop and four doors on the hummer, leaving
a smaller cargo area.  This configuration is commonly used as a command 
vehicle.

There are two ambulance configurations.  The smaller, a 2-litter version,
is a 2-door troop carrier with a (different than the troop version) cover
over the cargo area.  The larger (4-litter?) model is made by putting a
prefabbed insert into the hummer's cargo bed after removing the tailgate.
This ambulance box is self-contained, includes a bullnose that extends 
over the cab, and is (i think) also effective as an NBC shelter.

The TOW vehicle is a hardtop with a hatch between the 2 front seats.
A second large cargo hatch covers the rear of the vehicle.  Overall, the
vehicle resembles a boxy turtle.  Crew of 3: driver, gunner, loader.  The
TOW is mounted on the roof.  The rear hatch is 2-way -- pull one handle and
it opens like a car's hatchback, allowing replenishment of the onboard 
TOW missile racks.  pull the other handle and it opens like the rumble seat
of an antique car -- allowing the loader to stand up, load the missile, drop
down again and reclose the hatch, clearing the backblast area.  The gunner
uses the roof hatch, and the TOW launcher is mounted on a ring swivel, allowin
lateral movement, though I'm not sure how much.

There is also a Tactical Operations Center (TOC) version, which has a rear
canvas extension similar in function to the TOC extension on the M577 command
APC -- a tent to give the staff more room to work.

There are a few other variant kits available -- a winch, a deepwater fording
kit, arctic kit, etc.  There may also be other variant vehicles, but these are
the ones I've read about or seen.

The vehicle's performance in its intended role is excellent -- it will take
some pretty difficult terrain in stride.  A lot of thought went into the design.
In particular, it has full time 4X4, an automatic trans, axle mounted brakes
which both improve ground clearance and, since they are mounted on either side
of the engine, do not get wet in shallow fords and are quickly dried by engine
heat in deep fording; a heater, run-flat tires, and a V-8 diesel powerplant.

There are a few annoying omissions -- the mirrors are frankly atrocious, making
the vehicle very difficult to operate on the road without a co-driver.  Its
width -- an asset offroad -- creates large blind spots and is a real pain in
traffic.  It doesn't have a 3-point seatbelt, and the doors don't seal well.
These may be annoying problems -- but they're inconveniences, not mission
compromisers.  I think its one of the best buys the Army's made.

Regarding VT artillery ammo.  If memory serves, VT is a type of FUSE for an
artillery shell -- stands for "Variable Time".  Which means it can be set to
airburst, causing personnel casualties, or to imbed in the ground and detonate
later -- to reduce dug-in fortifications or cause casualties in cleanup 
personnel like (gulp) engineers or runway maintenance crews.


-- 
S.D. Cameron   | "...the right of the PEOPLE to keep and bear  |  AOPA | 50 yrs
Univ. of Wash. | arms shall not be infringed." -- U.S. Const.  |      -+-
Seattle WA     | "I know I promised, but ... " -- Geo. Bush    | _____(*)_____
scameron@toby.acs.washington.edu |   My opinions, not theirs   |    WingNut