1、 AEROSPACE STANDARD TIE DOWN ASSEMBLY, HELICOPTER BLADE CH-53 HELICOPTER AS85075/2 Copyright 2017 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, reco
2、rding, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org ISSUED 2002-05REAFFIRMED 2017-11THIRD ANGLE PRO
3、JECTION CUSTODIAN: AEROSPACE COUNCIL FEDERAL SUPPLY CLASS 1730 AS85075 /2 SHEET 1 OF 3 PROCUREMENT SPECIFICATION: NONE SAE Technical Standards Board Rules provide that: “This report is published by SAEtoadvance thestate of technicaland engineering sciences. The useof this report is entirely voluntar
4、y, and its applicability andsuitability for any particularuse, includingany patent infringement arisingtherefrom,is thesole responsibility of theuser.” SAE reviews eachtechnical reportatleast every fiveyears at whichtime it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your writt
5、en comments and suggestions.SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/AS85075/2 RATIONALE AS85075/2 HAS BEEN REAFFIRMED TO COMPLY WITH THE SAE FIVE-YEAR REVIEW POLICY. NOTICETHIS DOCUMENT HAS BEEN TAKEN DIRECTLY FROM U.S. MILITARY SPECI
6、FICATION MIL-T-85075/2A(AS) AND CONTAINS ONLY MINOR EDITORIAL AND FORMAT CHANGES REQUIRED TO BRING IT INTO CONFORMANCE WITH THE PUBLISHING REQUIREMENTS OF SAE TECHNICAL STANDARDS. THE INITIAL RELEASE OF THIS DOCUMENT IS INTENDED TO REPLACE MIL-T-85075/2A(AS). ANY PART NUMBERS ESTABLISHED BY THE ORIG
7、INAL SPECIFICATION REMAIN UNCHANGED.THE ORIGINAL MILITARY SPECIFICATION WAS ADOPTED AS AN SAE STANDARD UNDER THE PROVISIONS OF THE SAE TECHNICAL STANDARDS BOARD (TSB) RULES AND REGULATIONS (TSB 001) PERTAINING TO ACCELERATED ADOPTION OF GOVERNMENT SPECIFICATIONS AND STANDARDS. TSB RULES PROVIDE FOR
8、A) THE PUBLICATION OF PORTIONS OF UNREVISED GOVERNMENT SPECIFICATIONS AND STANDARDSWITHOUT CONSENSUS VOTING AT THE SAE COMMITTEE LEVEL, AND (B) THE USE OF THE EXISTINGGOVERNMENT SPECIFICATION OR STANDARD FORMAT.UNDER DEPARTMENT OF DEFENSE POLICIES AND PROCEDURES, ANY QUALIFICATION REQUIREMENTS AND
9、ASSOCIATED QUALIFIED PRODUCTS LISTS ARE MANDATORY FOR DOD CONTRACTS. ANY REQUIREMENT RELATING TO QUALIFIED PRODUCTS LISTS (QPLS) HAS NOT BEEN ADOPTED BY SAE AND IS NOT PART OF THIS SAE TECHNICAL DOCUMENT.AEROSPACE STANDARD AS85075/2 SHEET 2 OF 3 TIE DOWN ASSEMBLY, HELICOPTER BLADE CH-53 HELICOPTER T
10、HIS SPECIFICATION SHEET IS APPROVED FOR USE WITHIN THE NAVAL AIR SYSTEMS COMMAND, DEPARTMENT OF THE NAVY AND IS AVAILABLE FOR USE BY ALL DEPARTMENTS AND AGENCIES OF THE DEPARTMENT OF DEFENSE.THE COMPLETE REQUIREMENTS FOR PROCURING TIE DOWN ASSEMBLIES DESCRIBED HEREIN SHALL CONSIST OF THIS DOCUMENT A
11、ND THE LATEST ISSUE IN EFFECT OF SPECIFICATION MIL-T-85075 (AS).NOTES1. NOT DRAWN TO SCALE.2. TOLERANCES UNLESS OTHERWISE SPECIFIED ARE AS FOLLOWS: DECIMAL 0.010.AEROSPACE STANDARD AS85075/2 SHEET 3 OF 3 TIE DOWN ASSEMBLY, HELICOPTER BLADE CH-53 HELICOPTER NOTES (CONTINUED):3. EACH PART SHALL CONFOR
12、M TO THE DIMENSIONS SHOWN ON THE SPECIFICATION SHEET. ALLRECURRENT DIMENSIONS ARE TYPICAL. WHERE ONLY MAXIMUM OR MINIMUM DIMENSIONS ARE SHOWN,THE PART NEED NOT HAVE THE SHAPE SHOWN, BUT THE PART, INCLUDING ALL PROTRUSIONS, SHALL BECONTAINED WITHIN THE OUTLINE SHOWN. DESIGN DETAILS WHICH ARE SHOWN BU
13、T ARE NOTSPECIFICALLY REQUIRED ARE SHOWN AS EXAMPLES AND FOR INFORMATION ONLY; SUCH DETAILS AREOPTIONAL.4. TIE DOWN ASSEMBLY SHALL MATE WITH TEST FIXTURE SHOWN TO MEET ALL REQUIREMENTS OF THISSPECIFICATION SHEET AND MIL-T-85075 (AS). THE MATING PART IN THE ROTOR BLADE IS A RECEIVER (RI-242-2) SUPPLI
14、ED TO THE HELICOPTER MANUFACTURER BY NORCO INC. OF GEORGETOWN, CONN. ITSHALL BE PREFERRED THAT THIS MATING PART (RECEIVER) BE USED FOR ALL TESTS.5. SHACKLE SHALL PIVOT 180 MINIMUM ABOUT THE PIVOTING AXIS WHEN INSTALLED IN TEST FIXTURE.6. TOTAL WEIGHT OF TIE DOWN ASSEMBLY NOT INCLUDING ROPE SHALL BE
15、NO GREATER THAN 0.80POUNDS.7. TEST FIXTURE SHALL BE 17-4 PH STEEL, IN ACCORDANCE WITH AMS 5643, CONDITION H 1025, AND SHALLMEET THE DIMENSIONS OF THIS SPECIFICATION.8. THE 3/16 AND THE 3/8 DIAMETER NYLON ROPE SHALL BE SECURED TO THE TIE DOWN ASSEMBLY BYMEANS OF A SPLICE. A BOWLINE KNOT MAY BE USED F
16、OR A REPLACEMENT ROPE WHEN SPLICINGFACILITIES ARE NOT AVAILABLE.9. IT SHALL BE MANDATORY THAT EACH NEW SUPPLIER QUALIFY HIS TIE DOWN ASSEMBLY IN ACCORDANCEWITH THE FIRST ARTICLE INSPECTION OF PARA 4.3 OF MIL-T-85075 (AS).REQUIREMENTSLOADING SEE LOAD TEST (MIL-T-85075 (AS)LOAD REQUIREMENT - 2800 POUN
17、DSMARKING THE COMPLETE STANDARD PART NUMBER AND THE MANUFACTURERS NAME, TRADEMARK, OR FSCM NUMBER SHALL BE PLACED IN A CONVENIENT LOCATION ON THE BODY OF THE TIE DOWN ASSEMBLY.MATERIALSLOCKING DEVICE 17-4 PH CORROSION RESISTANT STEEL IN ACCORDANCE WITH AMS 5643, HEATTREATED TO CONDITION H 1025 AND P
18、ASSIVATEDBUMPER OIL RESISTANT RUBBER, 40 DUROMETER; BONDED TO THE BODY BY HEAT BONDING OR OTHER MEANS WHICH WOULD PREVENT ITS LOOSENESS IN SERVICEROPE NYLON, PER MIL-R-17343D SEARED.NAMEPLATE ALUMINUM, MARKED IN ACCORDANCE WITH MIL-STD-130. THE NOMENCLATURE, PART NUMBER, AND CONTRACT OR ORDER NUMBER
19、 SHALL APPEAR ON THE NAMEPLATE.PART NUMBERPART NUMBERS SHALL CONSIST OF THE FOLLOWING (IN SEQUENCE)1. THE LETTER “M”.2. THE GENERAL SPECIFICATION NUMBER.3. A SLASH, AND SLASH NUMBER OF THIS SPECIFICATION SHEET.4. THE REVISION LETTER.EXAMPLE: M85075/2AINTENDED USE:TIE DOWN ASSEMBLY PROCURED BY THIS SPECIFICATION ARE INTENDED FOR USE IN SECURING THE BLADES OF LANDED CH-53 HELICOPTERS.
