1、 MIL-G-85536 LO 9999906 03b5059 T W $3743 MIL-G-85536(A 24 May 1984 MILITARY SPECIFICATION GUN SYSTEM, 25-MM, AIRCRAFT A/A49E-10 8 This specification is approved for use by Naval Air Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department o
2、f Defense. 1. SCOPE 1.1 Scope. This specification establishes the requirements for the manufacture, test and acceptance of the ZS-mm, Aircraft A/A49E-10 Gun System, referred to herein as the gun system. 2. APPLICABLE DOCUMENTS. 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks
3、. Unless otherwise speci- fied, the following specifications and standards of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation form a part of this specification to the extent specified herein, SPECIFICATIONS MILI
4、TARY MIL-1-8500 STANDARDS MILITARY MIL-STD-12 9 MIL-STD-704 Interchangeability and Replaceability of Component Parts for Aerospace Vehicles Marking for Shipment and Storage Aircraft Electric Power Characteristics MIL-STD-45662 Calibration Systems Requirements /- _I_- THIS DOCUMENT CONTAINS IS PAGES.
5、 - -_ _ - Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commanding Officer, Naval Air Engineering Center, Engineering Specifications and Standards Department (ESSD), Code 93, Lakehrst, NJ 0873
6、3, by using the self addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. 1 I Obtained Fm GLOBAL ENGINEERING DOCUMENTS 2625 So.Hckow St. !$anta Ana, CA 92707 (7141540.9870: (800)854-7179 Licensed by Information Handling ServicesPr
7、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-553b 10 77777Ob 03650b b 0 . MIL-G-85536 (AS) 2.1.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this s
8、pecification to the extent specified herein. DRAWINGS Naval Air Systems Command (FSCM No 30003) 13 9 5AS 100 13 95AS 10 1 1 3 9 5AS 102 Gun System, 25-m, Aircraft A/A49E-10 Gun Subsystem, 25-mm, Aircraft GAK- 14 /A4 9E-1 O Ammunition Handling Subsystem, 25-mm, Aircraft GFK-ll/A49E-10 1395AS103 Gun A
9、ssembly, Automatic, 25-mm 13 9 5AS 104 13 9 5AS 105 139 5AS 1 O 7 1395AS108, 139 5AS 110 13 9 5AS 16 8 Drive Unit, Pneumatic Transfer Unit, Ammunition, 25-m Turnaround Unit, Ammunition, 25-mm Conveyor, Ammunition, Crossover Control Unit, Electronic Universal Joint 139 5AS232 Interface Unit 13 9 5AS2
10、 98 1 3 9 5AS 3 9 9 Chute, Ammunition Recoil Mechanism, 25- Gun (Copies of specifications, standards, drawings, and publications required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity r as directed by the contracting officer .) Pr
11、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-85536 10 7779706 0365063 W - 2.2 Other publications. The following document(s) form a part of this specification to the extent specified herein. INDUSTRY DRAWINGS General Electric Company (FSCM No 0
12、5606) 79 9E100 Stand, Assembly, Fire Test, AV-8B (Application for copies should be addressed to the General Electric Company, Armament and Electrical Systems Department, Lakeside Avenue, Burlington, VT 05402.) McDonnell Aircraft Company (FSCM No 76301) 758732501 Integrated 25-m Gun System, Installat
13、ion of 758732506 Assembly - Structural, 251nm Gun Pak 7 SA7 3 2 70 7 Assembly - Structural, 25- Ammo Pak (Application or copies should be addressed to the McDonnell Douglas . Corporation, McDonnell Aircraft Company, P.O. Box 516, St. Louis, MO 63166.) 2.3 Order of precedence. this specification and
14、the references cited herein, the text of this specification shall take precedence. In the event of a conflict between the text of . 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-8553b LO 77777Ob 03b50b2 T W 3. REQUIREMENTS 3.1 Item descript
15、ion. The gun system shall be a double-ended percus- sion fired 25-millimeter (mm) automatic gun system intended for mounting on the AV-8B aircraft. port side of the fuselage, an ammunition storage and handling pak mounted on the starboard side of the fuselage, and an ammunition crossover unit with c
16、huting and conveyor to transfer ammunition from the ammunition pak to the gun pilot cockpit controls. The drive power for the gun system shall utilize aircraft engine bleed air. The gun system shall consist of a gun pak mounted on the -transfer unit in the gun pak. The gun system shall be remotely f
17、ired by the 3.1.1 Major component list. The major components of the gun cystem (see Drawing 1395AS100) shall be as specified in Table I. hardware shall be as specified on Drawing 7511732501. The installation TABLE I. Major component list. Component Gun Subsystem, 25-mm, Aircraft, GAK-14/A49E-10 Gun
18、Assembly Transfer Urii t Pneumatic Drive Unit Recoil Mechanism 25-mm Gun- Pak Assembly - Structural Ammunition Handling Subsystem, 25-mm, Aircraft, GFK-11/49E-10 Interface Unit Turnaround Unit Ammunition Conveyor Electronic Control Unit Ammunition Chute .I 25-mm mo Pak Assembly - Structural Drawing
19、13 9 5AS 10 1 1395AS103 1395AS105 1395AS 104 13 9 5AS 2 98 7 5A7 3 2 5 O 6 1 39 5AS 102 13 9 5AS2 3 2 13 9 5AS 1 O 7 139 5AS 108 139 5AS 11 O 13 95AS 3 99 75A732707 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - MIL-G-85536 %O W 779770b 03650b3
20、 L MIL-G-85 53 6 (AS j . 3.1.2 Government-furnished property list. When specified in the contract or purchase order, the following Government-furnished property (GFP) will be supplied to the contractor for gun system testing: a. b. M794 Dummy Ammunition PGU-23/U TP Ammunition, Cartridge, 251nm, Targ
21、et Practice (TP) .I c- Other materials, as required, that the acquisition would be more expedient if the materials were furnished by the Government. 3.1.3 Input electrical power. The gun system shall maintain the per- formance specified herein when supplied with d-c electrical power in accordance wi
22、th MIL-STD-704 (28 volts nominal). greater than 10 amperes (A). The current shall be not 3.1.4 Input pneumatic power- The gun system shall maintain the per- formance specified herein when supplied with air at the inlet to the regulator having the following air conditions: a. Pressure: 63 psig to 255
23、 psig b. Temperature: 400F to 700F C. Flow rate: Not greater than 7.7 cubic feet per second 3.2 Characteristics. 3.2.1 Performance. 3.2.1.1 Dispersion and accuracy. When installed on the ground firing test stand, Drawing 7993100, the gun system shall place not less than 80 percent of all fired proje
24、ctiles in a 178- (7.0-inch) diameter circle at a range of 25.4 meters (m) (1,000 inches) for dispersion. The center of impact shall fall within a 7mil diameter circle the center of which is located 4.75 mils to the left and 4.75 mils down from the true boresight point of the gun (See 6.3.1). 3.2.1.2
25、 Firing rates. The steady-state firing rate (see 6.3.6) shall be within the limits of 3,400 to 4,000 rounds per minute. fire not less than 45 rounds in 1.0 second after application of the trigger ON signal The gun system shall 3.2.1.3 Clearing. The gun system shall automatically clear after each fir
26、ing burst. the gun sear point and a live round following firing of a burst. The cleared gun shall have not less than one spent case between 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-8553b LO 777770b 03b.50611 3 MIL-G-b 5 536 (AS ) 3.2.1
27、.4 Burst firing schedule The gun system shall be capable of fir- ing any number of bursts of any length including a single burst fire-out without degrading performance. Unless otherwise specified herein, the gun system normal burst firing schedule shall consist of continuous bursts of at least one s
28、econd, with five minutes of static ambient cooling between burst cycles until all the ammunition is fired. 3.2.1.5 Gun system signals. The gun system shall provide a rounds remaining signal and a gun unclear signal to appropriate cockpit indicators: a. Rounds count. A 22.0 to 29.0 Vdc, 500 mA maximu
29、m, 7 ms + 1 ms pulse The rounds remaining signal shall be provided for each round fired. shall be accurate to t 20 rounds per complement when fired in accordance with the schedule specified in 3.2.1.4. b. Gun not clear. A 22.0 to 29.0 Vdc, 500 mA maximum signal shall be provided when the gun is not
30、clear. 3.2.1.6 Torque. 3.2.1.6.1 Breakaway torque. The gun system breakaway torque (less ammunition) shall be not greater than 85 inch-pounds. 3.2.1.6.2 Running torque. The average system running torque shall be not greater than the limits specified in Figure 1. 3.2.2 Weight. The gun system weight i
31、n the configuration defined by Drawing 1395AS100, less ammunition, shall be not greater than the weights specified in Table II. TABLE II. Gun system weight. Component I Drawing 7 Weight Gun System (less ammunition) 13 9 5AS 100 7 5A7 32 506 25-mm Gun Pak Structure Assembly 950.0 188.0 25-mm Ammo Pak
32、 Structure Assembly 7 5A7 32 70 7 117.0 3.2.3 Reliability. When installed on the ground firing test stand, the gun system shall have a minimum reliability, at a confidence level of 90 percent, of 0.98 probability of firing a one-second burst of ammunition at any given firing sequence within the limi
33、tations specified herein without a stoppage (see 6.3.5). 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-5536 10 7777906 0365065 5 O o h 3 O o O 3 vi 9 O m 3 O hl o O k-4 O O Q O Ln O O O n $4 a W cn C O O O O - (sq1-q) anbao;l, 7 Provided by
34、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-85536(AS) 3.2.4 Durability. The gun system shall perform within the limitations specified herein with a scheduled parts replacement at intervals of 18,000 fired rounds. procuring activity approved maintenanc
35、e manual (see 6.2.2). Scheduled maintenance shall be performed as specified in a 3.3 Design and construction. design and construction characteristics. The gun system shall have the following 383.1 Production drawings. The gun system shall be fabricated and assembled in accordance with the drawings,
36、parts lists, and other documents listed on Drawing 1395AS100. 3.3.2 Standards of manufacture. The gun system shall be manufactured in accordance with the standards of this specification and the standards specified on the drawings listed in Table I. 3.3.3 Interchangeability. The components of the gun
37、 system shall be completely interchangeable without field adjustment. All parts having the same part numbers shall be completely interchangeable, in accordance with MIL-1-8500. shall be interchangeable as assemblies with the aircraft interface. The gun and ammunition Paks, Drawings 758732506 and 758
38、732707, 3.4 First artlcle. When specified, a sample shall be subjected to first article inspection (see 4.3 and 6.5). 3.4.1 First article sample. When specified in the contract or purchase order, the contractor shall furnish a first article sample of one gun system for first article inspection and a
39、pproval (see 6.2.1). The first article shall be manufactured using the same methods, materials, processes and procedures proposed for production. Any production prior to approval of the first article shall be at the risk of the contractor. 3.5 Workmanship. Workmanship and finish shall be in accordan
40、ce with the highest grade practice used in manufacturing military weapons. items and parts shall not exhibit poor material and processing such as seams, laps, laminations, cracks, visible steps, sharp edges, nicks, scratches, burrs, deformations, and missing operations which may affect serviceabilit
41、y, functioning, operation, or safety. Fins and other extraneous metal shall be removed from cast or forged parts. of the contractors workmanship, the questionable physical item will be submitted to the responsible technical agency for decision. Finished When doubt exists concerning acceptability 8 P
42、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4. QUALITY ASSURANCE PROVISIONS 4.1 General. This section establishes the methods used to verify that the gun system as a fabricated and assembled unit, complies with the requirements of this specificati
43、on. I 4.1.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. specified in the contract or purchase order, the contractor may use his own or any other faci
44、lities suitable for the performance of the inspection require- ments specified herein, unless disapproved by the procuring activity. The procuring activity reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure suppli
45、es and services conform to prescribed requirements. Except as otherwise 4.1.2 Failure criteria. If d failure (see 6.3.4) occurs during the tests of 4.2.2, 4.2.3, and 4.3 specified herein, the following action shall be taken by the contractor: a. A failure report shall be prepared (see 6.2.2) b. A fa
46、ilure investigation shall be performed C. The cause of failure shall be determined d. Corrective action shall be recommended. 4.1.3 Test conditions and equipment. All firing tests shall be performed with the gun system affixed to the test stand conforming to Drawing 7993100. instrumentation to measu
47、re and record test data. Calibration of the test equipment shall be in accordance with MIL-STD-45662. The contractor shall provide all necessary supplies and services except GFP to accomplish the testing specified herein. Unless otherwise specified in the contract or purchase order, all gun system t
48、est firing shall be with PGU-23/U ammunition (see 3.1.2). under environmental conditions existing at the test site. The contractor shall furnish the applicable measuring devices and Unless otherwise specified herein, all tests shall be performed 4.1.4 Test plan. When specified in the contract or pur
49、chase order, a contractor proposed test plan and test procedures shall specify methods to be used for acceptance of the gun system (see 6.2.lb). Test plan and procedures shall be subjected to review and acceptance by the procuring activity (see 6.2.2). 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-M
