1、AMSC N/A FSC 4220 PERFORMANCE SPECIFICATION LIFE RAFT, INFLATABLE, SINGLE-PLACE This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for an inflatable one-man, single-place life raft. 1.2 C
2、lassification. The life rafts are of the following types as specified (see 6.2). 1.2.1 Types. The types of single-place life rafts are as follows: Type I - Navy Aircraft Type II - Army Helicopter Type III - Navy Aircrew Common Ejection Seat (NACES) 2. APPLICABLE DOCUMENTS 2.1 General. The documents
3、listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, do
4、cument users are cautioned that they must meet all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed.Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Air Warfare Center Aircraft Division, C
5、ode 4L8000B120-3, Highway 547, Lakehurst, NJ 08733-5100 or emailed to michael.sikoranavy.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. INCH-POUND MIL-PRF-81542C 21 September 2
6、011 SUPERSEDING MIL-PRF-81542B 05 February 2007 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81542C 22.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a pa
7、rt of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL STANDARD FED-STD-595/12197 - Orange, Gloss FED-STD-595/35042 - Blue, Flat or Lusterless DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-A-33
8、39 - Anchors, Sea, Life Raft. (Inactive for New Design) MIL-C-83489 - Cloth, Coated, Nylon, Polyurethane Coated DEPARTMENT OF DEFENSE STANDARD MIL-STD-810 - Environmental Engineering Considerations and Laboratory Tests (Copies of these documents are available online at https:/assist.daps.dla.mil/qui
9、cksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Goevernment documents, drawings, and publications form a part of this document to the extent spe
10、cified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. NAVAL AIR SYSTEMS COMMAND NAVAIR 13-1-6.3-1 - Aviation Crew Systems Manual Seat Survival Kits NAVAIR 13-1-6.3-2 - Aviation Crew Systems Manual Seat Survival Kits (Copies of these
11、 documents can be obtained from the contracting activity or as directed by the contracting officer.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81542C 32.3 Non-Government publication. The following document forms a part of this document
12、to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR QUALITY (ASQ) ANSI/ASQ-Z1.4 - Sampling Procedures and Tables for Inspection by Attributes. (DoD adopted) (Copies of this document are availa
13、ble from www.asq.org or the American Society for Quality, 600 North Plankinton Ave., Milwaukee, WI 53203.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this documen
14、t takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 General. The life raft shall be manufactured and designed to incorporate a cost effective life cycle with respect to maintenance, shelf
15、 life, repack, and/or replacement. The life raft shall meet all the requirements specified herein. 3.2 Qualification. The life raft furnished under this specification shall be a product that is authorized by the qualifying activity for listing on the applicable qualified products list before contrac
16、t award (see 4.2 and 6.3). 3.3 First article. When required (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.3. 3.4 Materials. The material of the raft main buoyancy tube shall conform to MIL-C-83489, type I. The latest technology materials and processes shall
17、be utilized. The use of ozone depleting substances (ODS) shall be limited. Unless otherwise specified, the materials and components, except for the metallic parts, used in the construction of the life raft shall not have been manufactured more than 12 months prior to the delivery of the life raft (s
18、ee 6.2). 3.5 Inflation system. The inflation system shall not leak during the manufacturers established raft repack/recertification cycle. 3.5.1 Secondary inflation. A means readily accessible to the life raft occupant shall be provided to complete inflation (top-off) and provide emergency inflation
19、 to maintain operating pressure. The means shall be properly located, reinforced, and protected against any possible leakage or damage that may occur due to reduced volume packing. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81542C 43.6 C
20、anopy. The life raft design shall incorporate an inflatable canopy system to provide aircrew protection from sea spray and extreme weather conditions. The canopy shall provide adequate headroom based on the anthropometric data in table I and shall be made weathertight. A clear visor or other means s
21、hall be incorporated to allow the aircrewman vision when the canopy is made weathertight. Raft buoyancy shall not be affected by the integrity of the canopy system. The canopy shall be in a stowed position (tied down) during inflation and shall be untied by the aircrewman after boarding. 3.7 Sea anc
22、hor. A sea anchor shall be incorporated into the raft design to maintain the raft in a sea environment. The sea anchor shall conform to MIL-A-3339, type I or equivalent. The sea anchor shall be stowed (held in place) for the aircrewman to deploy after boarding. 3.8 Stowage pockets. Stowage pockets s
23、hall be incorporated into the life raft to hold the strobe light and the radio beacon. The strobe light pocket shall be located on the outside of the raft for signaling purposes. Stowage pocket dimensions (in inches) shall be as follows: 5 x 3.5 x 1 depth for the strobe light and 8 x 4 x 2 depth for
24、 the radio beacon. 3.9 Equipment container attachment. A means shall be provided to secure the survival equipment container to the inside of the raft. 3.10 Capsize resistance. The life raft shall have ballast bags or other means to provide stability and capsize resisitance. 3.11 Righting aid. A mean
25、s shall be provided to right the life raft if it inflates in an inverted position. The means provided for righting the raft shall be such that it can be activated by one person in the water. 3.12 Life raft equipment. All lines shall be stowed and secured to prevent entanglement during launching/infl
26、ation of the life raft. 3.13 Color. The color of the life raft surfaces, including the canopy surface, shall match FED-STD-595, color 35042 (lusterless blue) . High-visibility orange matching FED-STD-595 color 12197 shall be used on the inside of the canopy for rescue operations. 3.14 Capacity. The
27、life raft shall have adequate capacity for an aircrewman wearing standard aviation life support equipment including a flight suit, survival vest, inflated life preserver, and flight boots. Anthropometric characteristics are presented in Table I. Provided by IHSNot for ResaleNo reproduction or networ
28、king permitted without license from IHS-,-,-MIL-PRF-81542C 5TABLE I. Anthropometric characteristics. Case 1 Case 2 Case 3 Case 4 Case 5 Case 6 Case 7 Measurements (in inches) Overall Small Short Sitting Heights with Long Limbs Large Sitting Height with Short LimbsOverall Large Longest Limbs Shortest
29、 Torso Thumb Tip Reach 27.0 27.6 33.9 29.7 35.6 36.0 26.1 Buttock-knee Length 21.3 21.3 26.5 22.7 27.4 27.9 20.8 Knee-height Sitting 18.7 19.1 23.3 20.6 24.7 24.8 18.1 Sitting Height 32.8 35.5 34.9 38.5 40.0 38.0 31.0 Eye-height Sitting 28.0 30.7 30.2 33.4 35.0 32.9 26.8 Shoulder-height Sitting 20.6
30、 22.7 22.6 25.2 26.9 25.0 19.5 Shoulder Breadth Range 14.7-18.1 16.4-20.6 16.2-21.2 16.8- 21.7 16.9- 22.6 16.8-22.5 14.2- 18.0 Chest Depth Range 7.4- 10.9 6.9- 10.6 7.2- 11.3 7.1- 11.0 7.3- 12.1 7.4- 12.2 7.2- 10.2 Thigh Circumference Range 18.5-25.0 17.1-25.0 20.2-27.6 17.6- 26.3 18.6- 29.2 19.1-29
31、.7 17.8- 25.2 Nude Body Weight Range 103 pounds to 245 pounds 3.15 Buoyancy. The life raft shall provide a freeboard of not less than 2 inches at its lowest point immediately after boarding with a fully equipped aircrewman in accordance with Table I. 3.16 Weight. The weight of the packaged life raft
32、 including the inflation assembly shall be not greater than 10 lb. 3.17 Stowage. 3.17.1 Type I - Navy Aircraft. The Type I life raft, when folded, shall be packed in Navy seat kits and a Navy helicopter backpack. Available volume for the life raft is in accordance with applicable NAVAIR seat kit and
33、 helicopter backpack manuals. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81542C 63.17.2 Type II Army Helicopter. The Type II life raft shall be sealed in reduced volume packaging. The seal shall provide protection and preservation for th
34、e raft in an aircraft environment. The life raft shall be sealed in such a way as to guarantee verification of airtight packaging by visual methods. The Type II life raft shall be packed in the helicopter aircrewmans Air Warrior Over-Water Gear Carrier (OWGC). The inflation cord attachment shall be
35、located such that the lanyard exits the pack at the upper left corner to allow activation over the left shoulder of the aircrewman. The packed configuration shall be in accordance with figure 1. FIGURE 1. Type II - Army Helicopter. 3.17.3 Type III NACES ejection seats. The Type III life rafts, when
36、folded, shall be packed in Navy NACES ejection seats only. Available volume for the life raft is in accordance with applicable NAVAIR seat kit manual chapters. 3.18 Actuation. All life raft types shall actuate manually by pulling an inflation lanyard. The pull force required for lanyard actuation sh
37、all be not greater than 30 lb when tested in accordance with 4.9. Type I and III life rafts shall also actuate automatically by gravity drop on kit actuation when jump tested in accordance with 4.10. 3.19 Raft pressure. 3.19.1 Pressure. The pressure in the raft flotation tube shall be not less than
38、95 percent of 2 times the manufacturers specified operating pressure when tested in accordance with 4.11.1. 3.19.2 Leakage. The pressure in the raft flotation tube shall be not less than 80 percent of the manufacturers specified operating pressure when tested in accordance with 4.11.2. Inflation Lan
39、yard Exit1.5”12-3/4”20”Raft Storage DimensionsProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81542C 73.20 Function/operation. The life raft shall inflate at the required pull force to its design shape in not more than 60 seconds when tested
40、as specified in 4.12. During the inflation, the life raft shall be observed for impediment or blockage of the flow of gas, loss of gas to the ambient air, or restriction by any component or accessory. There shall be no evidence of structural or material failure in any respect. All the sealed areas,
41、seams, seam tapes, and attachments shall remain intact and shall show no indication of separation. The floor shall not be distorted and there shall be no difference in the rise between the sides of the raft. The erected canopy shall withstand 35-knot winds and 52-knot gusts in open water. The life r
42、aft shall demonstrate seaworthiness and stability in an open sea condition of 17 to 27 knot winds and waves of 6 to 10 feet. The raft shall be easily boarded by a subject wearing standard aviation life support equipment including a flight suit, survival vest, inflated life preserver, and flight boot
43、s. See Table I for anthropometric data. 3.21 Environmental. 3.21.1 Temperature extremes. 3.21.1.1 Low temperature. The life raft shall inflate into a boardable shape within 5 minutes at 0 F (-18 C) when tested as specified in 4.13.1.1. There shall be no hindrance to the flow of gas or restriction by
44、 any component or accessory during inflation. All the seams, seam tapes, sealed areas and attachments shall remain perfectly intact and shall show no evidence of separation. There shall be no evidence of construction or material failure in any respect. 3.21.1.2 High temperature. The life raft shall
45、inflate to design shape within 60 seconds at 160 F (71 C) when tested as specified in 4.13.1.2. Inflation shall be without any hindrance to the flow of gas or restriction by any component or accessory. All the seams, seam tapes, sealed areas and attachments shall remain perfectly intact and shall sh
46、ow no evidence of separation. There shall be no evidence of construction or material failure in any respect. 3.21.2 Low pressure (altitude). The packed life raft shall withstand a low pressure environment and rapid pressure changes when tested as specified in 4.13.2. The life raft shall show no leak
47、age of gases and no rupture or failure of sealed packaging. 3.21.3 Vibration. The packed life raft shall resist the effects of aircraft vibration when tested as specified in 4.13.3. The life raft shall show no leakage of gases and no rupture or failure of sealed packaging. 3.21.4 Accelerated aging/l
48、ife cycling. The packed life raft shall withstand the effects of accelerated aging/life cycling when tested as specified in 4.13.4. The life raft shall inflate to design shape within 60 seconds when actuated as specified in 4.13.4. Inflation shall be without any hindrance to the flow of gas or restr
49、iction by any component or accessory. All the seams, seam tapes, sealed areas and attachments shall remain perfectly intact and shall show no evidence of separation. There shall be no evidence of construction or material failure in any Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81542C 8respect. Immediat
