1、Beneficial comments (recommendations, additions, deletions) and any pertinentdata which may be of use in improving this document should be addressed to:Commander, U.S. Army Natick Research and Development Center, ATTN: SSCNC-WST,Natick, MA 01760-5018 by using the self addressed Standardization Docum
2、entImprovement Proposal (DD Form 1426) appearing at the end of this document or byletter.AMSC N/A FSC 5411DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.INCH-POUNDMIL-PRF-44408C31 October 1996SUPERSEDINGMIL-S-44408B28 January 1994PERFORMANCE SPECIFICATIONSHELTER, EL
3、ECTRICAL EQUIPMENT, LIGHTWEIGHTThis specification is approved for use by all Departments and Agencies of theDepartment of Defense.1. SCOPE1.1 Scope. This document covers three types of lightweight electricalequipment shelters designed for transport on both the M1037 and M1097 HighMobility Multipurpo
4、se Wheeled Vehicle (HMMWV). These shelters are transported byrail, air, marine and highway when mounted or dismounted from their vehicles.1.2 Classification. The shelters will be of the following types, as specified(see 6.2).Type I - Shelter, Electrical Equipment, Lightweight (w/o Tunnel,17-2-0035-1
5、)Type II - Shelter, Electrical Equipment, Lightweight, Modified, SICPS(w/ Tunnel, Drain holes in tunnel, Secondary Exit, and Ventilation Port, 17-2-0035-2)Type III - Shelter, Electrical Equipment, Lightweight, Modified, General Purpose (w/ Tunnel, 17-2-0035-3)2. APPLICABLE DOCUMENTS2.1 General. The
6、documents listed in this section are specified in sections 3and 4 of this specification. The section does not include documents cited inother sections of this specification or recommended for additional information oras examples. While every effort has been made to ensure the completeness of thislis
7、t, document users are cautioned that they must meet all specified requirementsdocuments cited in sections 3 and 4 of this specification, whether or not they arelisted.2.2 Government Documents.2.2.1 Specifications, standards, and handbooks. The following specifications,standards, and handbooks form a
8、 part of this document to the extent specifiedherein. Unless otherwise specified, the issues of these documents are thoselisted in the issue of the Department of Defense Index of Specifications andStandards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2).Provided by IHSNot for R
9、esaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-44408C2SPECIFICATIONSDEPARTMENT OF DEFENSEMIL-T-704 - Treatment and Painting of MaterialMIL-M-8090 - Mobility, Towed Aerospace Ground Equipment, GeneralRequirements forSTANDARDSDEPARTMENT OF DEFENSEMIL-STD-209 - Slingi
10、ng and Tiedown Provisions for Lifting and TyingDown Military EquipmentMIL-STD-810 - Environmental Test Methods and Engineering GuidelinesMIL-STD-1366 - Transportability CriteriaMIL-STD-1791 - Designing for Internal Aerial Delivery in Fixed WingedAircraft(Unless otherwise indicated, copies of the abo
11、ve specifications, standards,and handbooks are available from the Standardization Document Order Desk, 700Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)2.2.2 Other Government documents, drawings, and publications. The followingother Government documents, drawings and publications form a
12、part of this documentto the extent specified herein. Unless otherwise specified, the issues are thosecited in the solicitation.U.S. ARMY NATICK RESEARCH, DEVELOPMENT AND ENGINEERING CENTER17-1-8565 - Extension Kit, Pintle17-1-8584 - Mounting Kit Shelter To HMMWV17-2-0035 - Interface Control Drawing
13、for, Shelter, Electrical Equipment,Lightweight, Types I, II and III13228E1639 - Standard Camouflage Pattern For Shelter, Lightweight,Multipurpose(Copies of drawings are available from the U.S. Army Natick Research,Development, and Engineering Center, ATTN: SSCNC-WST, Natick, MA 10760-5018.)2.3 Non-G
14、overnment publications. The following documents form a part of thisdocument to the extent specified herein. Unless otherwise specified, the issuesof the documents which are DoD adopted are those listed in the issue of the DoDISScited in the solicitation. Unless otherwise specified, the issues of the
15、documents not listed in the DoDISS are the issues of the documents cited in thesolicitation (see 6.2).AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)PS 27 - 95 - Provisional Standard Specification for Engineering and DesignCriteria for Rigid Wall Relocatable Structures(Application for copies shoul
16、d be addressed to the American Society forTesting and Materials, 1916 Race Street, Philadelphia PA 19103.)INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS (IEEE)IEEE 299-1991 - IEEE Standard Method for Measuring the Effectiveness ofElectromagnetic Shielding EnclosuresProvided by IHSNot for ResaleNo
17、reproduction or networking permitted without license from IHS-,-,-MIL-PRF-44408C3(Application for copies should be addressed to the IEEE Service Center, 445Hoes Lane, Piscataway, NJ 08855-1331.)2.4 Order of precedence. In the event of a conflict between the text of thisdocument and the references ci
18、ted herein, the text of this document takesprecedence. Nothing in this document, however, supersedes applicable laws andregulations unless a specific exemption has been obtained.3. REQUIREMENTS.3.1 First article. When specified (see 6.3), a sample shall be subjected tofirst article inspection in acc
19、ordance with 4.1a. A first article is defined as apreproduction or an initial production sample consisting of one or more of eachtype of completed shelters.3.2 Physical Performance Requirements.3.2.1 Weight and payload. The shelter weight and payload capacity of eachshelter type shall be as listed i
20、n table I. The maximum shelter weight listeddoes not include the weight of the Mounting Kit and Pintle Extension and theirattaching hardware. The shelter shall be capable of accepting the payloaddistribution specified in the contract or purchase order (see 6.2).TABLE I. Weight and Payload CapacityTy
21、pe Maximum ShelterWeightMinimum PayloadCapacityMounting KitIncl. HardwarePintle ExtensionIncl. HardwareI 608 lbs 3300 lbs 88 lbs 50 lbsII 650 lbs 3300 lbs 88 lbs 50 lbsIII 643 lbs 3300 lbs 88 lbs 50 lbs3.2.2 Parts interchangeability.3.2.2.1 Spare parts. The spare parts are listed in table II and are
22、 depicted oninterface drawing number 17-2-0035. All spare parts and related assemblies shallbe functionally and dimensionally interchangeable without modification or reworkof the part, assembly, or shelter.TABLE II. Spare PartsPARTHMMWV Mounting KitPintle Extension KitDoor AssemblyHatch Assembly (Ty
23、pe II)Rear LadderStepsT-bar Door Holder3.2.2.2 Interface parts. The interface parts are listed in table III. Allinterface parts and related assemblies shall be functionally and dimensionallyinterchangeable, without modification or rework of the part, assembly, shelter, orvehicle, with the reference
24、parts listed in table III.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-44408C4TABLE III. Interface PartsPART REFERENCE PART NO.Mounting Kit, Shelter To HMMWV 17-1-8584-1Extension Kit, Pintle 17-1-8565-13.2.3 Shelter configuration. The shel
25、ter shall meet the configurationconstraints specified on interface drawing 17-2-0035 for the shelter typespecified.3.2.3.1 Shelter flatness and squareness. Shelter surfaces shall be flat andsquare. Each surface of the shelter shall be flat within 1/8 inch per each 48inch length. Adjacent surfaces sh
26、all be perpendicular within 0.10 degrees.3.2.3.2 Shelter dimensions. The shelter shall meet the dimensional constraintswithin the specified tolerances required by interface drawing 17-2-0035 for thosedimensions which are not provided for reference only.3.2.3.3 Integration. The shelter shall be capab
27、le of accepting all integrationconfigurations of the systems listed in table IV (see 6.2) without modification orrework to the system integration designs listed in table IV. The shelter shall becapable of accepting integration configuration cutouts at various locations.Shelter surfaces shall be capa
28、ble of accepting the installation of individualpieces of equipment installed by system integrators at various locations. Forinstallations where threaded mechanical fasteners are the preferred fasteners, theattaching surfaces shall be capable of resisting the loads listed in table V forthe listed siz
29、es of threaded mechanical fasteners, without damage or degradationto the shelter or fastener.TABLE IV. System Integration ConfigurationsSYSTEM INTEGRATION CONFIGURATIONSAll Source Analysis SystemChemical Biological Protected ShelterCommon Ground StationFirefinderLight Ground Station ModuleMeteorolog
30、ical Measuring SetStandardized Integrated Command Post SystemTrojanUnmanned Aerial Vehicle-Short RangeTABLE V. Attaching Surface Resistance LoadThreaded FastenerSize(inches)Torque (ft-lb) Pull-out (lb)10-32 8 8001/4-20 through 1/2-20 10 10003.2.4 Chemical and biological (CB) resistance. All shelter
31、surfaces, exceptweather seals and gaskets, shall be resistant to, and shall not absorb, chemicaland biological agent contamination, decontamination fluids, and petroleumProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-44408C5products. Weather
32、seals and EMI gaskets shall either meet the requirements aboveor be easily replaceable.3.2.5 Pressurization. The shelter shall be capable of being pressurized towithstand overpressurization of 1.2 inches water gauge (iwg) with an air leakagenot to exceed 10 standard cubic feet per minute (scfm) for
33、Types I and III, and 15scfm for Type II with the ventilation port covered and sealed. Additionally theType II shelter with the ventilation port opened shall have an air leakage of 40to 50 scfm, at an overpressurization of .75 iwg.3.2.5.1 Ventilation port. The Type II shelter shall be equipped with a
34、n airflow passage that functions in conjunction with the Chemical Avoidance ProtectiveEntrance CAPE (see interface drawing 17-2-0035) and Gas Particulate Filter UnitGPFU (NSN 4240-01-231-6515). Based on two people in the shelter, 40 cfm ofventilation air flow is required and the GPFU will nominally
35、provide anoverpressure of 0.75 iwg. The airflow passage shall be in the shelter door toallow ventilation of the space between the CAPE and the shelter door. The passageshall prevent dust and contaminants from entering the shelter when no ventilationair flow is being provided. An exterior cover may b
36、e used to meet thisrequirement. The cover shall not be a separate item. In routine conditions theair flow passage will be open. While open, the passage shall maintain the weathertightness and EMI integrity of the shelter.3.2.6 Roof loads. The shelter roof shall be capable of supporting, withoutdamag
37、e or degradation; (1) a uniformly distributed load of 40 lbs/ft2 over theentire surface and (2) a concentrated load of 660 lbs over a 1 ft x 2 ft area,applied anywhere on the roof.3.2.7 Floor loads. The shelter floor shall be capable of supporting, withoutdamage or degradation; (1) a uniformly distr
38、ibuted load of 65 lbs/ft2 over theentire floor, (2) a concentrated load of 1000 lbs applied over a 1 ft x 2 ftarea, and (3) a point load of 125 lbs, over one square inch.3.2.8 Door.3.2.8.1 Door handle. From either side, the shelter door shall be capable ofbeing opened and closed with a maximum force
39、 of 48 lbs applied to the door handle.From inside the shelter, the shelter door shall be capable of being opened andclosed with a maximum force of 48 lbs applied to the door handle with the outsidehandle locked. The door shall be capable of being padlocked from the outside.3.2.8.2 Door structure and
40、 hinge assembly. The door and hinge assembly shallbe capable of supporting a 200 lb static load applied parallel to the hinge line,along the door edge opposite the hinge, with the door open to 90 degrees, withoutdegradation or damage to the door or door hardware and the door shall operatefreely afte
41、r such a load is applied.3.2.8.3 Door stop. The door shall include a door stop capable of automaticallylatching the door, when opened, at 90 degrees. The stop shall automaticallyprevent the door from swinging beyond 90 degrees when engaged and allow the doorto open 180 degrees when disengaged. The d
42、oor stop shall be capable of beingdisengaged by personnel, while they are standing on the ground, when the shelteris mounted on the HMMWV and shall not obstruct entry/exit through the door. Thedoor stop shall be capable of withstanding a static load equal to 10 lb/ft2 timesthe largest surface area o
43、f the door. The load shall be applied normal to thedoors largest surface and on the edge opposite the hinge, with the door latchedat 90 degrees. The door and its hardware shall be capable of withstanding theseloads without degradation, damage, or improper door operation.3.2.8.4 Door maintainability.
44、 The door shall not be removable from theexterior when locked and shall be easily removable with hand tools when unlocked.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-44408C6Hand tools are defined as those found in Tool Kit, General Mechan
45、ics, Automotiveand Shop Equipment, Automotive Maintenance and Repair (NSN: 5180-00-177-7033 and4910-00-754-0654, respectively).3.2.8.5 Door drip edge. There shall be a drip edge over the entire width ofthe door. The drip edge shall prevent water rolling down the side of the shelterfrom entering the
46、shelter.3.2.9 Ladder. A ladder shall be provided to allow personnel carryingequipment, with a combined weight of up to 400 lbs, to enter and exit the sheltersafely while the shelter is mounted on the vehicle without damage or degradationto the shelter or ladder. The ladder shall have a stowage locat
47、ion on the door asdescribed on interface drawing 17-2-0035. The ladder must stow securely in alltransportation modes (see 3.4).3.2.10 Roof Hatch. The Type II shelter shall have a roof hatch which shallprovide for safe and quick evacuation of personnel from the shelter. The roofhatch shall not be rem
48、ovable from the exterior when locked and shall be easilyremovable with hand tools when unlocked. Hand tools are defined as those found inTool Kit, General Mechanics, Automotive and Shop Equipment, Automotive Maintenanceand Repair (NSN: 5180-00-177-7033 and 4910-00-754-0654, respectively).3.2.11 Impa
49、ct resistance. The shelter shall be capable of withstanding,without damage, the impact of any of the hand tools as defined in 3.2.10 droppedonto the top of the floor surface from a height of 30 inches.3.2.12 Roof access steps/handholds. Roof access steps and handholds shall beprovided for safe access to the roof. These steps/handholds shall be either builtinto the shelter or attached to the exterior. The steps/handholds shall bedesigned such that the vehicle/shelter combination does not
