1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2017 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/AS1055E AEROSPACE STANDARD AS1055 REV. E Issued 1969-02 Reaffirmed 2013-01 Revised 2017-10 Supe
5、rseding AS1055D Fire Testing of Flexible Hose, Tube Assemblies, Coils, Fittings, and Similar System Components RATIONALE Add zero flow types. 1. SCOPE This SAE Aerospace Standard (AS) establishes uniform requirements and procedures for the fire testing of flexible hose assemblies and rigid tube asse
6、mblies (including coiled tubes) to be used in aircraft or aerospace vehicle fluid systems. These procedures may also be followed for fire tests on other piping components as specified by the customer. It also refers to standard fire test equipment to be used in conducting “referee“ fire tests. 1.1 C
7、lassification Component assemblies shall be designated by Type and Class according to fire test duration and usage. Flame test apparatus and temperature shall be the same for each Type and Class. 1.1.1 Types Type Ia - Hose Assembly, Rubber - Fuel and Oil Systems Type Ib - Hose Assembly, Rubber - Hyd
8、raulic Systems Type Ic - Hose Assembly, Rubber - Zero Flow Systems Type IIa - Hose Assembly, Polytetrafluoroethylene - Fuel and Oil Systems Type IIb - Hose Assembly, Polytetrafluoroethylene - Hydraulic Systems Type IIc - Hose Assembly, Polytetrafluorethylene - Zero Flow Systems Type IIIa - Rigid Tub
9、ing Assembly - Fuel and Oil Systems Type IIIb - Rigid Tubing Assembly - Hydraulic Systems Type IIIc - Rigid Tubing Assembly - Zero Flow Systems SAE INTERNATIONAL AS1055E Page 2 of 6 NOTES 1. The Types listed above, when tested to higher pressures, temperatures, and lower flow rates do not have to be
10、 retested to qualify to lower pressures, low temperatures, and/or higher flow rates. 2. An index of the types of assembly by specification is contained in Appendix A. 1.1.2 a. Class A - Fire Resistant: 5 minutes b. Class B - Fireproof: 15 minutes NOTE: The user of this document is cautioned that the
11、 class designation relates only to assemblies tested under the specified flow conditions. 2. APPLICABLE DOCUMENTS The following publications form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall
12、 be the issue in effect on the date of the purchase order. In the event of conflict between the text of this document and references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has
13、 been obtained. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org . AIR1377 Fire Test Equipment for Flexible Hose and Tube Assemblies AS150 Hose Assembly, T
14、ype Classifications of, Basic Performance and Fire Resistance AS1072 Sleeve, Hose Assembly, Fire Protection 2.2 FAA Publications Available from Federal Aviation Administration, 800 Independence Avenue, SW, Washington, DC 20591, Tel: 866-835-5322, www.faa.gov. Federal Air Regulation (FAR) Code of Fed
15、eral Regulations Volume 14, Airworthiness Standard Powerplant Engineering Report No. 3A 3. QUALIFICATION The component assemblies furnished under this document shall be products which have been tested and passed the fire test requirements listed herein. These products shall also have been tested and
16、 passed the performance requirements of the latest applicable specifications, or other applicable specifications designated by the purchaser. Test report(s) proving qualification of products to this specification shall be furnished by the supplier to the purchaser and to such cognizant agencies desi
17、gnated by the purchaser, for acceptance of qualification. Qualification by similarity, to assemblies or parts previously tested and qualified, shall be acceptable. SAE INTERNATIONAL AS1055E Page 3 of 6 3.1 Materials The component materials shall be uniform in quality, free from defects, consistent w
18、ith good manufacturing practices, and shall conform to the applicable specifications listed in 2.1 and 2.2, or other applicable specifications designated by the purchaser. 3.1.1 When firesleeves are employed to meet the fire test requirements, they shall be compatible with fluid and ambient environm
19、ents encountered and be free of corrosive additives and free from wicking action. Wrapped type firesleeves, where used, shall be arranged to approximate the installed condition that gives the least fire protection. NOTE: AS1072 indicates compatibility of firesleeves with various fluids. 4. TEST PROC
20、EDURE Test procedure shall conform with the following conditions: 4.1 Pretest Conditions 4.1.1 Flame Temperature and Size The flame temperature shall be 2000 F 150 F (1090 C 83 C) along centerline of the flame for a minimum distance of 7 inches (178 mm). 4.1.2 Flame Intensity The flame heat content
21、shall be 4500 +200/-100 Btu/h (1320 +60/-30 watts) input to a 15 inch (380 mm) exposed length of 1/2 x .032 inch (13 x 0.8 mm) refrigeration type copper tubing with a water flow rate of approximately 1 gal/min (3.8 L/m). For “Referee Heat Content“ equipment, refer to AIR1377.1 4.1.3 Air Velocity Air
22、 velocity over the test assembly shall be 400 ft/min (2.03 m/s) with assembly mounted in a 25 x 25 inches (635 x 635 mm) hood equipped with a downstream exhaust fan. Air temperature should not exceed the range 40 to 100 F (4.4 to 37.8 C). 4.2 Test Conditions 4.2.1 The assembly under test shall be no
23、t less than 24 inches in length. The assembly shall be (R) mounted horizontally with hose assembly(ies) to include a 90 bend. The assembly shall be mounted within the hood except when limited by physical characteristics such as minimum bend radius, etc. The vibrated fitting shall be within the flame
24、. 4.2.2 Vibration Vibration shall be lateral or longitudinal with an amplitude of .062 inch (1.59 mm) at 2000 cpm (33 Hz). Amplitude and frequency tolerance shall be 2%. 4.2.3 Oil Temperature 200 to 230 F (93 to 110 C). 4.2.4 Oil Flow The flow rate, using SAE No. 20 oil, shall be as given. Where spe
25、cified, the system working fluid may be substituted for SAE No. 20 oil. The ID shall be taken as that of the majority of the component (i.e., the hose for a hose assembly and the tube for a tube assembly) expressed to the next higher 16th of an inch (next higher full millimeter). Flow rate tolerance
26、 shall be 3%. 1 It is desirable that a calorimeter reading of 10 Btu/ft2-s 1 Btu/ft2-s (113500 w/m2 11350 w/m2) be obtained over the fire area of 10 x 6 inches (254 x 152 mm) in the plane of the component. Along the 7 inches (178 mm) hose centerline, a calorimeter reading of 12 Btu/ft2-s 1 Btu/ft2-s
27、 (136200 w/m2 11350 w/m2) is desirable. SAE INTERNATIONAL AS1055E Page 4 of 6 4.2.4.1 Flow Rate for Fuel and Oil Systems (Type a) (Eq. 1) 4.2.4.2 Flow Rate for Hydraulic Systems (Type b) (Eq. 2) 4.2.4.3 Flow Rate for Zero Flow Systems (Type c): (GPM) = 0.0 or (L/min) = 0.0 4.2.5 Pressure The pressur
28、e shall be the working pressure of the component or, where specified, the system pressure may be substituted during the test. 4.2.6 Burner Position The burner shall be positioned such that the distance to the side of the component is equal to the distance to the plane where the requirements of 4.1.1
29、 and 4.1.2 are met. In the case of testing a hose or tube assembly, a minimum of 5 inches (127 mm) of the hose or tubing plus the fitting must be exposed to the fire. 5. REQUIREMENTS 5.1 Test Equipment The equipment used for this fire test shall be capable of providing the test conditions of Section
30、 4. For purposes of “referee“ testing, the equipment shall be in accordance with AIR1377. 5.2 Failure Assemblies shall not fail by rupture or leakage before a test duration of: a. 5 minutes to be rated Class A - Fire Resistant b. 15 minutes to be rated Class B - Fireproof Rupture or leakage shall be
31、 detected visually from a distance of 5 feet (1.5 m) or automatically with a photoelectric cell located 3.5 to 4 feet (1.1 to 1.2 m) downstream of test specimen. 5.2.1 Three successfully tested samples are required for compliance to AC 23-2, AS150 and similar (R)FAA TSO test. 6. IDENTIFICATION Assem
32、blies shall be permanently and legibly identified with the following information using a permanently attached corrosion resistant steel band or permanent marking on component, unless otherwise specified by the purchaser. a. Manufacturers name or trademark. b. Size, type, and maximum operating pressu
33、re of component assembly. c. Manufacturers part number. G P M = 5. 0 I D 2 i n 2 or L min = 0. 03 I D 2 m m 2 G P M = 1. 0 I D 2 i n 2 or L min = 0. 00 6 I D 2 m m 2 SAE INTERNATIONAL AS1055E Page 5 of 6 d. Date of manufacture (month and year). e. Component assemblies suitable for use with synthetic
34、 base fluids shall be marked with the letter “S“ immediately following the Type and Class designation and the letter “P“ for petroleum base fluids. If suitable for both synthetic and petroleum base fluids, mark with letters “S/P“, i.e.: AS1055 Type Ia Class A-S Type Ib Class A-P Type IIb Class A-S/P
35、 Applicable Specification: (AS1055) Type of Assembly shall be as designated in 1.1.1 Class of Assembly shall be as designated in 1.1.2 7. INTENDED USE This document is intended to set forth requirements and test criteria for approval of piping components for use in designated fire zones where fire r
36、esistant assembly (5 minutes exposure - Class A) or fireproof assembly (15 minutes exposure Class B) is necessary and required per Federal Air Regulation 23, 25, 27, or 29. 8. NOTES 8.1 Revision Indicator A change bar (I) located in the left margin is for the convenience of the user in locating area
37、s where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in d
38、ocuments that contain editorial changes only. PREPARED BY SAE G-3, AEROSPACE COUPLINGS, FITTINGS, HOSE AND TUBING ASSEMBLIES COMMITTEE SAE INTERNATIONAL AS1055E Page 6 of 6 APPENDIX A For cross-reference purposes, and to permit continued usage of the superseded ARP1055 designations, Table A1 compare
39、s the Type of assembly in AS1055 with ARP1055A. Table A1 Nominal System Pressure (psi)/ Temperature (F) AS1055 Type ARP1055A Type Rubber Hose Assemblies 3000/160 (MIL-DTL-8790) Ib Ia 1500/160 (MIL-DTL-8795) Ib* Ib 1000/160 (MIL-DTL-8795) Ia Ic or Id 1000/250 (MIL-DTL-83796) Ia Ic Polytetrafluoroethy
40、lene Hose Assemblies 4000/400 (ARP614) IIb IIj 3000/400 (MIL-H-38360)* IIb IIa 1500/450 (MIL-DTL-25579) IIb IIb 1500/275 (MIL-DTL-25579)* IIb IIc 1500/450 (MIL-DTL-25579) IIa IId 1500/275 (MIL-DTL-25579)* IIa IIe 1000/400 (ARP620) IIb IIf 300/400 (ARP1227) IIb IIg 300/275 (ARP1227)* IIb IIh Rigid Tu
41、be Assemblies (Per AS18280) 3000/400 IIIb IIIa 3000/275* IIIb IIId 1500/400 IIIb IIIb 1500/275 IIIb IIIc None IIIe None IIIf NOTES: * Requalification required due to change in oil flow requirements. * Aluminum end fitting components permitted for lower temperature applications. * MIL-H-38360 is superseded by AS1339 and AS604 (DODISS).
