1、.IINCH-POUND IMIL-STD-913A? Februa 1997SUPERSEDWGMIL-STD-91 33 January 1991(see 6.5)DEPARTMENT oF DEFENsEDESIGN CRITERIA STAh7DAR.DREQUIREMENTS FOR THE CERTIFICATION OF SLmG LOA.DEDMILITARY EQUIPMENT FOR EXTERNAL TRANSPORTATIONBY DEPARTMENT OF DEFENSE HELICOPTERSAMSC N/A AREA 1670Provided by IHSNot
2、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-913AFOREWARD1, Ttisstandard isapproved foruseby all Depafiments and Agencies of the DepafimentofDefense.2. This military standard delineates the requirements and procedures for the certification ofsling loaded mil
3、itary equipment for external transportation by Department of Defense (DoD)helicopters, Per the Joint Logistics Commanders Memorandum of Agreement on ExternalHelicopter Transported Loads, dated 23 September 1987, the engineering agency assignedresponsibility for certiing all DoD external loads to the
4、 U, S, Army Natick Research,Development, and Engineering Center, ATTN: SSCNC-UTE, Natick, MA 01760-5017.3. Helicopter sling loading (HSL) is a mode of transportation by which an item(s) issuspended beneath a rotary wing aircraft for the purpose of transporting the item(s). The primaryapplication of
5、HSL by helicopter is short range, tactical transport missions. The deployment ofequipment by HSL offers many advantages which include:a. The ability to handle heavy, oversized or bulky cargo.b. The ability to reach areas inaccessible by ground transportation.c. Faster transit times than conventional
6、 ground transportation.d. Independence from ground transportation conditions (i.e., congestion, battle damage,terrain, size restrictions).e. Unrestricted flight routes allowing use of diversionary tactics to enhance ground unitsecurity.f, Relatively fast rigging and derigging times of most items all
7、owing for immediate useupon delivery.4. The requirements of this military standard are intended to be consistent with therequirements of MIL-STD-209, Interface Standard for Slinging and Tiedown Provisions forLifling and Tying Down Military Equipment, with regard to HSL. The design and testing oflifl
8、ing points should attempt to envelope the requirements of both military standards.5. Beneficial comments (recommendations, additions, deletions) and any pertinent data whichmay be of use in improving this document should be addressed to: U.S. Army Natick Research,Development, and Engineering Center,
9、 Natick, MA 01760-5017 by using the StandardizationDocument Improvement Proposal (DD Form 1426) appearing at the end of this document or byletter.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Param-ahMIL-STD-913ACONTENTS1.1.11.21.31.42.2.12.22.2.12
10、.33.3.13.23.33.43.53.63.73.83.93.103.10.13.10.23.10.33.10.43.10.53.113.123.134.4.14.1.14.1.24.1.34.1,44.1.54.24.2.1SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11、 . . . . . . . . . . . . . . . . . . . . . . . . . .1HSL certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Metric equivalent
12、s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1APPLICABLEDOCUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13、. . . . . .1Government documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Order ofprecedence . . . . . . . . . . . . . . . . . . . . . . .
14、. . . . . . . . . . . . . . . . . . . . . .2DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Design limit load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Helicopter sling loading (HA
15、L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Helicopter sling loadweight(HSLWT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Flight iest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Slinging
16、 provision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Materiel lift point loadfactor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Maximum projected frontalarea(MPFA) . . . . . . . . . . . . . . . . . . . . . . . . .
17、. . . . 3Non-standard liflingcomponent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Proof-loadtest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Sling loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18、 . . . . . . . . . . . . . . . . . . . . .3Accompanying slingload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Dual point sling load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Multiple sling loads . . . . . . . . .
19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Single point sling load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Tandem sling load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3S
20、tatic litltest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Static load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Uhimate load . . . . . . . . . . . . . . . . . . . . . . . . . .
21、. . . . . . . . . . . . . . . . . . . . . . . . .4GENERAL REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Slinging provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Number . . . . . . . . . . . . . . . .
22、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Location oflifl provisions ,. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Fra
23、meattachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Spreader bars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Rigging procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24、 . . . . . . . . . . . . . . .5Sling sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.111Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-913ACONTENTS (Contd)4.2.24.2.2.14.2.2.24
25、.2.34.2.44.2.54.34.44.55.5.15.25.2.15.2.25.2.35.2.45.36.6.16.26.36.46.56.66.7Minimum sling legclearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Ropetype sling legs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Webbin
26、g type slinglegs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-5Non-standard lifiingcomponents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Drag inducing devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27、 . . . . . .-5Tandem sling loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Static lifltesting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Proof-loadtesting . . . . . . . . . . . . . . . . . . . . .
28、. . . . . . . . . . . . . . . . . . . . . . . . . .6Flight testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-6DETAILED REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Static lifitesting . . . . .
29、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Proof-load testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - . . . .-.7Materiel litlpoint loadfactor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30、7Calculation ofthedesign limitload. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-7Proof-load testing requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Ultimate loadverification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31、. . . . . . .8Flight testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Intended use . . . . . . . . . . . . . . . . . .
32、. . . . . . . . . . . . . . . . . . . . . . . . . . . . .-.8Issue ofthe DoDISS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Waivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - . . . . . . . .9International
33、 standardization agreements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Supersession data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Subject term (keyword)listing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34、 .9Changes from previousissue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9FIGURE1 Maximum projected frontal area(MPFA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10TABLESI Military sling sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
35、. . . . . . . . . . . . . . . . . . . . .511 Calculation ofmateriel liftpointload factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7ivProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-913A1. SCOPE* 1.1 Scope. This standard cove
36、rs design, testing and performance requirements of militaryequipment for Helicopter Sling Loading (HSL) by Army, Navy, Marine Corps, and Coast Guardrotary wing aircraft. The complete air transportability requirements for an item of equipment notspecified herein shall be specified in the individual e
37、quipment specification.* 1.2 HSL certification. Although lifiing and tie-down point design criteria for militaryequipment are specified in MIL-STD-209 and MIL-STD-8 14, as well as in documentspertaining to specific types of items (i.e., shelters and other containers), items to be certified forsling
38、loading by rotary wing aircrafi must meet the requirements of this standard. Since items ofequipment will also be transported via modes other than rotary wing aircraft, lifting and tie-downprovisions for such equipment shall also meet the requirements of any other applicable standardspertaining to l
39、ifting and/or tiedown.1.3 Atmlicability. This standard applies to the following:* a. All new developmental, non-developmental, and military-adaptedcommercial items with HSL requirements.* b. Modified equipment with HSL requirements, when modificationsresult in changes to the following:(1) Item weigh
40、t.(2) Center of Gravity (CG) location.(3) Lift provisions.(4) Projected frontal area.1.4 Metric equivalents. Metric equivalents shall conform to FED-STD-376.2. APPLICABLE DOCUMENTS2.1 General. The documents listed in this section are specified in section 4 of this standard.This section does not incl
41、ude documents cited in other sections of this standard or recommendedfor additional information or as examples. While evety effort has been made to ensure thecompleteness of this list, document users are cautioned that they must meet all specifiedrequirements documents cited in sections 3, 4 and 5 o
42、f this standard, whether or not they arelisted.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-913A2.2 Government documents.2.2.1 Specifications. standards. and handbooks. The following specifications, standards, andhandbooks form a part of t
43、his document to the extent specified herein. Unless otherwisespecified, the issues of these documents are those listed in the issue of the Department of DefenseIndex of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation(see 6.2).STANDARDSMILITARYMIL-STD-209 - Int
44、erface Standard for Slinging and Tiedown Provisionsfor Lifting and Tying Down Military Equipment.(Unless otherwise indicated, copies of federal and military specifications, standards, andhandbooks are available from the Standardization Documents Order Desk, Building 4D, 700Robbins Avenue, Philadelph
45、ia, PA 1911 1-5094).2.3 Order of Precedence. In the event of a conflict between the text of this document andthe references cited herein, the text of this document takes precedence. Nothing in thisdocument, however, supersedes applicable laws and regulations unless a specific exemption hasbeen obtai
46、ned.3. DEFINITIONS3.1 Desire limit load. The applied force (the static load times the load factor) which aslinging provision, including its supporting structure, can withstand without set. The design limitload is to be used in proof-load testing.* 3.2 Helicopter sling loading (HSL). A mode of transp
47、ortation by which an item(s) issuspended beneath a rotary wing aircraft for the purpose of transporting the item(s).* 3.3 Helicopter sling load weight (HSLWT). The specified weight of the item to betransported. HSLWT is used to calculate the HSLWT to Maximum Protected Frontal Area(MPFA) ratio and th
48、e corresponding materiel lift point load factor (see 5.2.1). The currentmaximum allowable HSLWT is 36,000 pounds.* 3.4 Flight test. A test in which the item is rigged in its HSL configuration and flown throughspecific maneuvers by military rotary wing aircrafi.2Provided by IHSNot for ResaleNo reprod
49、uction or networking permitted without license from IHS-,-,-MIL-STD-913A3.5 Sliruzing IIrevision. A point of attachment used for Iifling the item. It is typically apadeye, lug, or ring.* 3.6 Materiel lifl point load factor. A multiplier of the static load used to calculate the designlimit load. This load factor is a fi,mction of the HSLWT and the HSLWT/MPFA ratio.3.7 Maximum m-oiected frontal area (hFA). For a single point load, the maximum areaprojected on a vert
