Lightweight Multipurpose Shelters (LMS)

HMMWV and JLTV Shelters

The S-788 Lightweight Multipur-pose Shelter produced by General Dynamics Mission Systems provides a versatile shelter for a broad range of uses.

The S-788 offers a lightweight shelter with improved Electromagnetic Interference, watertightness, and thermal and impact performance. The patented U-Panel construction has been improved by incorporating EMI-resistant enclosure panels; welded seams; one-piece, co-cured wheel wells and Nomex honeycomb core.

  • Lightweight and versatile for many applications
  • Improved Electromagnetic Interference, water tightness and thermal impact performance
  • Design eliminates reliance on secondary treatments
  • First in the industry to achieve the DoD Environmental objective

Our design eliminates reliance on secondary treatments, such as closeout angles, that have inherent EMI and moisture leak paths and are susceptible to deterioration when exposed to the rigors of the field.

We have replaced the 3/8-inch-cell WR-II kraft paper core with ¼-inch-cell Nomex. The inherent toughness and resilience of the aramid-fiber Nomex core offers performance improvements not possible with the brittle paper core, such as resistance to denting and core damage, continued panel strength, and improved thermal insulation.

General Dynamics Mission Systems is the first in our industry to achieve the DoD Environmental objective eliminating the use of hexavalent chromium in panel processing. Our in-house panel bonding operations include clean and etch preparation of aluminum skins with an environmentally friendly process and non-hexavalent chromium based conversion coating or structural bonding primer in compliance. Skins are then bonded to the specified core to yield sandwich panels that are lightweight and high strength for a host of military rigid wall shelter applications.

Initially designed for the High Mobility Multipurpose Wheeled Vehicle and subsequently compatible with mounting on the Joint Lightweight Tactical Vehicle, the versatile design and integration capabilities of the LMS allow us to offer a variety of optional equipment, including full turn-key and specialized systems to meet customer requirements.

Specifications

HMMWV and JLTV Lightweight Multipurpose Shelters (LMS) Datasheet

View Document

Military specification
MIL-PRF-44408
Dimensions
Exterior
84˝W x 67.0˝H x 102.0˝L (2,134 x 1,702x2,591mm)
Interior
81.5˝W x 64.5˝H x 99.5˝L (2,070 x 1,638x2,527mm)
Overall height on prime mover
102˝ (2,591 mm)
Standard equipment
Includes access ladder, roof access steps,
HMMWV mounting and pintle extension kits
Tare weight
Bare shelter (type I)
585 lbs (265.4 kg)
Vehicle mounting kit
88 lbs (39.9 kg)
Shelter payload
4,050 lbs (1,837 kg)
Volume
285 Ft3
Floor area: (including wheel wells)
56 Ft2
Transportability
Ground mobility: MIL-M-8090, type V
Air transport: Drive-on/back-off cargo aircraft
Rail impact: Up to 8 mph
Floor loading: 65 psf overall, 500 psf local
Helicopter lift: MIL-STD-209H
Environmental
Rain: Up to 5˝ per hour
Storage Temperature: -70°F To +160°F / -56.6°C To 71.1°C
Operating Temperature: -65°F To +125°F / -53.8°C To 51.6°C
Humidity: Up to 100 percent
Snow and ice: 40 psf
Wind: Up to 100 mph (160 kph) steady
(120mph [193 kph] gusts)
Heat transfer (BTU/Hr-Ft2-°F) 0.42
EMI shielding
Minimum of 60dB attenuation or electrical, magnetic and plane waves in frequency range of
150KHz to 10GHz

  • Features

    Our design eliminates reliance on secondary treatments, such as closeout angles, that have inherent EMI and moisture leak paths and are susceptible to deterioration when exposed to the rigors of the field.

    We have replaced the 3/8-inch-cell WR-II kraft paper core with ¼-inch-cell Nomex. The inherent toughness and resilience of the aramid-fiber Nomex core offers performance improvements not possible with the brittle paper core, such as resistance to denting and core damage, continued panel strength, and improved thermal insulation.

    General Dynamics Mission Systems is the first in our industry to achieve the DoD Environmental objective eliminating the use of hexavalent chromium in panel processing. Our in-house panel bonding operations include clean and etch preparation of aluminum skins with an environmentally friendly process and non-hexavalent chromium based conversion coating or structural bonding primer in compliance. Skins are then bonded to the specified core to yield sandwich panels that are lightweight and high strength for a host of military rigid wall shelter applications.

    Initially designed for the High Mobility Multipurpose Wheeled Vehicle and subsequently compatible with mounting on the Joint Lightweight Tactical Vehicle, the versatile design and integration capabilities of the LMS allow us to offer a variety of optional equipment, including full turn-key and specialized systems to meet customer requirements.

  • Specifications

    Specifications

    HMMWV and JLTV Lightweight Multipurpose Shelters (LMS) Datasheet

    View Document

    Military specification
    MIL-PRF-44408
    Dimensions
    Exterior
    84˝W x 67.0˝H x 102.0˝L (2,134 x 1,702x2,591mm)
    Interior
    81.5˝W x 64.5˝H x 99.5˝L (2,070 x 1,638x2,527mm)
    Overall height on prime mover
    102˝ (2,591 mm)
    Standard equipment
    Includes access ladder, roof access steps,
    HMMWV mounting and pintle extension kits
    Tare weight
    Bare shelter (type I)
    585 lbs (265.4 kg)
    Vehicle mounting kit
    88 lbs (39.9 kg)
    Shelter payload
    4,050 lbs (1,837 kg)
    Volume
    285 Ft3
    Floor area: (including wheel wells)
    56 Ft2
    Transportability
    Ground mobility: MIL-M-8090, type V
    Air transport: Drive-on/back-off cargo aircraft
    Rail impact: Up to 8 mph
    Floor loading: 65 psf overall, 500 psf local
    Helicopter lift: MIL-STD-209H
    Environmental
    Rain: Up to 5˝ per hour
    Storage Temperature: -70°F To +160°F / -56.6°C To 71.1°C
    Operating Temperature: -65°F To +125°F / -53.8°C To 51.6°C
    Humidity: Up to 100 percent
    Snow and ice: 40 psf
    Wind: Up to 100 mph (160 kph) steady
    (120mph [193 kph] gusts)
    Heat transfer (BTU/Hr-Ft2-°F) 0.42
    EMI shielding
    Minimum of 60dB attenuation or electrical, magnetic and plane waves in frequency range of
    150KHz to 10GHz

  • Literature