1、MIL-C-8052C 58 7777906 0348347 LI - MIL-E-5272 MIL-E-17555 MIL-C -8052C( USAF) 16 August 1967 Superseding 22 September 1955 MIL-C -80 52B( USAF) MILITARY SPECIFICATION CONTROL , PRESSURIZING SET C - 117 3/ASQ 1. SCOPE 1.1 This specification covers one type of electronic equipment pressurizing sys- t
2、em control, designated C-l173/ASQ. 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of invitation for bid, or request for proposal, form a part of this specification to the extent specified herein: SPEC I FICATIONS Militarv DRAWING Air Force 53D13247 Control-Pressu
3、rizing Set . C -1 17 3-ASQ (Copies of specifications, s t and a r d s, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 3. REQUIREMENTS STANDARDS Military MI
4、L-STD-130 MIL-STD-831 Environmental Testing, Aeronautical and Asso- ciated Equipment, Gen- eral Specification for Electronic and Electrical Equipment and Associ- ated Repair Parts, Prep- aration for Delivery of Identification Marking of U.S. Military Property Test Reports Prepara- tion of Air Force-
5、Navv Aeronautical AN565 Setscrew - Hexagon and Fluted Socket, Headless 3.1 Preproduction. T h i s specification makes provisions for preproduction test- ing. 3.2 Design and construction. The design and construction of the control shall con- form to Drawing 53D13247. Where the requirements of the dra
6、wing and this specification conflict, the requirements of this specification shall govern. 3.2.1 Setscrews (control knob). S e t- s crews in the control knobs shall have No. 8-32 UNC-SA threads in accordance with AN565. 3.2.2 Tubing connections, The tubing connections in the control shall be tight t
7、o preclude leakage of the pressurized air. 3.2.3 Electrical circuitry. The elec- trical circuitry of the control shall con- form to Drawing 53B13250. -1 THIS DOCUMENT CONTAINS PAGES E Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L 3.3 Performance.
8、 The control shall be capable of satisfactory continuous opera- tion under the following conditions: a. A relative humidity as encountered in tropical and semitropical climates b. Fxposure to atmosphere containing salt - laden mois ture c. Vibration incident to use in aircraft. 3.3.1 Leakage, The le
9、akage shall not be more than 0.5 inch Hg in 1 minute when tested in accordance with 4.5.2. 3.4 Identification of product. Equipment, assemblies, and parts shall be marked for identification in accordance with MIL- STD - 130. 3.5 Workmanship 3.5.1 General. The control, including all parts and accesso
10、ries, shall be fab- ricated and finished in a thoroughly work- manlike manner. Particular attention shall be given to freedom from blemishes, defects, burrs, and sharp edges; accuracy of dimensions, radii of fillets and marking of parts and assemblies; thoroughness of soldering, brazing, and rivetin
11、g; alignment of parts and tightness of assembly screws and bolts; et cetera. 3.5.2 Riveting. Riveting operations shall be carefully performed to insure tightness and satisfactory heading of rivets. 3.5.3 Cleaning. The control shall be thoroughly cleaned. Loose, spattered, or excess solder, metal chi
12、ps, and other foreign material shall be removed during and after final assembly, 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Un- less otherwise specified in the contract or purchase order,- the supplier is respon- sible for the performance of all inspection requirements as spe
13、cified herein, Except as otherwise specified, the supplier may utilize his own facilities or any com- mercial laboratory acceptable to the Gov- right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to as- sure supplies and services conform
14、 to prescribed requirements. i ernment. The Government reserves the 1 4.2 Classification of tests. The inspec- tion and testing of controls shall be classified as follows: a. Preproduction tests b. Acceptance tests 4.3 Preproduction testing 4.3.1 Test sample. The contractor shall subject three contr
15、ols to the preproduction tests specified in 4.3.2. 4.3.2 Preproduction tests. The three controls shall be subjected to the ac- ceptance tests and the following tests as described under 4.5: a. First control to be subjected to the humidity test specified in 4.5.4.1 b. salt spray test specified in 4.5
16、.4.2 Second control to be subjected to the c. Third control to be subjected to both the vibration test specified in 4.5.4.3 and to the leakage test specified in 4.5.2. h Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-C-52C 58 611 9799906 OL939
17、9 8 -1 4.4 Acceptance tests, Acceptance tests shall consist of the individual tests. 4.4.1 Individual tests. Each control shall be subjected to the following tests as described under 4.5: a. Examination of product b. Leakage test c. Circuit continuity 4.5 Test methods 4.5.1 Examination of product. T
18、he con- trol shall be inspected to determine com- pliance with the requirements specified herein with respect to materials, work- manship, and marking, 4.5.2 Leakage. The control shall be connected to an air pressure source. A pressure sufficient to produce an indica- tion o 42 to 45 inches Hg on th
19、e control pressure gage shall be applied. The con- necting tubing shall then be pinched off or otherwise completely sealed at apoint within 2 inches of the control pressure connection. During the first minute after the connecting tubing has been completely sealed, the gage pointer shall not change i
20、ts position by more than 0.5 inch Hg. 4.5.3 Circuit continuity. The electrical circuitry in the control shall be given a continuity check to determine that the circuit meets the requirements specified on Drawing 53B13250, 4.5.4 Environmental tess. The control shall be subjected to the following en-
21、vironmental tests in accordance with MIL- E -5272. 4.5.4.1 Humidity. The control shall be subjected to humidity in accordance with procedure I of MIL-E-5272. Corrosion of components, except for the following- com?onents, shall be cause for rejection of the control: a. Purge valve b. Air pressure ind
22、icating gage c. Switch and guard assembly d. Light panel plastic plate lighting e. Li gh t assembly press-to-test in- dicator. 4.5.4.2 Salt spray, The control shall be subjected to salt spray in accordance with procedure II specified in MIL-E- 5272. Cause for rejection shall be as specified in 4,5.4
23、.1. 4.5.4.3 Vibration. The control shall be subjected to the vibration test specified in procedure I of MIL-E-5272. Upon con- clusion of this test, the control shall be subjected to the tests specified in 4.5.4.3.1 and 4.5.3. Structural failure or failure of the control, except for the air pressure
24、indicating gage, panel light assemblies, and press-to-test light indicator shall be cause for rejection, Failure of any of the three components specified shall be indicated. 4.5.4.3.1 Post vibration leakage test. A gage, of the same type as the gage in the control unit, shall be connected externally
25、 through a tee to the control pressure connection in such manner that the in- ternal volume will be minimum, The con- trol shall be connected to an air-pressure source and a pressure applied sufficient to produce an indication of 42 to 45inches on the external pressure gage. The con- necting tube sh
26、all be pinched off, or otherwise completely sealed, at a point Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-&I IL-C - 8 O 5 26 (USA I?) upstream of the gage and within 3 inches of the control pressure connection. During the first minute after the
27、connecting tube lias been completely sealed, the external 6.2,2 Lighting-plate test report. A cer- gage pointer shall not change positionmore tified test report indicating that the plastic than 0.5 inch IIg. lighting plate meets the requirements of MIL-P-7788 will be submitted to the 5. PREPARATION
28、FOR DELIVERY procuring activity. b, the test requirements. The samples that were tested andmet 5.1 The control shall be prepared for 6.3 Detail drawings, The following delivery in accordance with MIL-P-17555. drawings are pertinent to AF Drawing 6. NOTES 6,1 Intended use. The C-l173/ASQ con- trol co
29、vered by this specification is intended fer use as a controlling compo- net of a direct-current or an alternating- current pressurizing set used to maintain a relatively fixed pressure invarious air- borne electronic equipment under a 11 altitude conditions. 6.2 Ordering data. Procurement doc- ument
30、s should specify the following: a. fication Title, date, and number of this speci- b. quired Number of preproduction samples re- c. and packing required. Levels of preservation and packaging, 6.2.1 Bata to accompany the prepro- duction test sample. The contractor shall furnish the followiiig to the
31、procuring ac- tivity: 53D13247: 50A14020-3 5 2A136 14 5 2B 13 6 11 52B13612 52B13613 52C13607 5 2C 136 O 8 5 3C 1380 9 53C 13810 53B13250 MIL-G-8190 Custodian: Spacer - Control Panel Disc, Control Panel Shield, Dial, Control C o up 1 i n g Assembly, Gauge, Control Panel Gauge, Control Panel Plate, L
32、ighting Plastic Control Panel Plate, Mounting Control Panel Plate Mounting, Pres- surizing Set, Control, Rear Cover Pressurizing Set Control Wiring Diagram, C1173/ ASQ Pressurizing Set Control Schematic Gage, Absolute Pressure, Dial Indicating, AIR, 15 to 45 Inch Mercury Range, Type MA-1, Preparing
33、activity : Air F&C:F: - 11 a, Three copies of a test report in Air Force - 11 accordance with MIL-STD-831 Heview Activity : Air Force - 71 Project No. 1650-F09 *US. GOVERNMENT PRiNTIPFG OFFICE: 1967-301 -51 i/ 1250 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
