1、MIL-C-O ( Aer ) 10 hlay 195s MILI TARY SPEC IF IC ATION COMPENSATOR, ANGLE OF ATTACK AND ANGLE OF SIDESLIP Ihis .specification has been approved by the Bureau of Aeronautics, Department of the Navy 1. SC OPE 1.1 angle of sideslip compensator lhls specification covers certain design requirements and
2、all perform- ance requirements for procurement of one type angle of attack and 2. APPLICABLE DOCUMBi Ts 2.1 aie following specifications, s tandards, drawings, and publications, of the issue in effect on date of invitation for bids, form a part of this specification to -the extent speoified herein:
3、SPECIFICATIONS - Federal a-151 Metals ; General Specification for Inspec tion of QQ - P -U 6 Plating; Cadmium (Electrodeposited) . Xi 1 i tarx i3 MIL-C-O MIL-D- 502 XJL-E-5272 MIL-E- 400 311-1-6181 rVKcL-P-710 5 XIL-P- a 064 MIL-X-7911 - MIL-A-S625(ASG) JAN -R -i9 JAIJ -I -22 5 S TANDARDS Connec tor
4、s; Electrical Drawings and Data Lists; Preparation of NanufactuPersf Ehvironmental Testing, Aeronautical and Associated Equip- Electronic Equipment, Airborne, General Specification for Packaging of Lightweight Aircraft Accessories interference Limits and Tests; Aircraft Electrical and Pipe Threads,
5、Taper, Aeronautical National Form, Screw !Breads, Standard, Aeronautical Transmitter; Angle of Attack or Yaw, Local Narking, Identification of Aeronautical Equipment, Anodic-Coatings; f Or Aluminum and Aluminum Alloys Resistors, Variable +:ire-iYound (Low Operating Temperature ) Interference Measure
6、ment, Radio, Methods of, i50 Kilo- cycles to 20 Megacycles (For Components and Complete Assemblies ) (For production Aircraft, Guided Missiles, Engines, ment, General Specification for Accessories and other Auxiliary Equipment) Electronic Equipment Symbol ANPT Assemblies and Parts mL-s TD-129 Markin
7、g of Shipments DRAVi IN GS Air Force-Kavy Aeronautical Standard Drawings 110050 Bosses, Standard Dimensions for Gasket Sealed Straight Threads Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10398 PUBLICA TI ON S Me tals - Defini tion of Dissimilar I
8、 ao. 43 Specifications and Standards f use of I I refer to both title andununiber. Copies*of this sphcificatToh and*applicable l Records Division. I 3* REQUIREUEN Ts specifications or are not specifically designated shall be entiry suitable for the purpose. me use of. lightweight materials and weigh
9、t-saving designs is a major consideration, and their use shall be investigated and exploited to the ;reates t practicable extent . - -“ - - to which the compensator may be subjected when in storage or zuring normal I service life . I with each other. Dissimilar metals are defined in Drawing AND10398
10、. I I where magnetic materials-are essential. I that are nutrients f.or fungi mst be used, such material shall be treated with a fungicidal agent as approved by the procuring. activity. I I ._ - - equipment, w8ich ar6 not specifically designated herein-and whSch ire necessary for the execution of th
11、is specification; shall be selected in accordance with ANA Bulletin No. lh3. tXCeDt as Drovided in the followifis Darnmaoh. I I drawing by their part numbers. Commercial utility parts such as screws, bolts, nuts, cotter pins, etc., may be used, provided they possess suitable mowerties I bids, comerc
12、ial parts may be used provided they conform to all requirements of this specification - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-18023 bb 777770b O127b18 2 w 1-18023(Aer) (Mag 1954) 3 *2 Design and construction.- shall be designed to a
13、ccept continuously pitot and static pressures, signals from one local angle of attack and one local angle of sideslip trans- mitter (hfIL-T-7785) and a reference voltage from the Computer I shall be subjected to the tests described below. in addition, Each compensator submitted for acceptance under
14、4.3 *2 each compensator shall be subjected to any other tests specified herein which the Inspector considers necessary to determine conformance with the requirements of this specification. (a) Examination of product (b) lach Servo operation (c) Adjustments and settings (d) Continuity and accuracy Sa
15、mpling .tests.- which have passed the required Individual tests shall be selected and (a) Vibration error (b) High temperature opration (c) Low temperature test mitted for acceptance under contract shall be selected at random and (a) Low temperature exposure b) Vibration endurance (c) Insulation str
16、ength Rejection and retest.- Phen Sampling tests are specified on a number of items that are selected as representative of a certain lot, and one 4.3.3 subjected to the following tests, as described under methods“: At least one from each 100 compensators or less, 4.3.4 Special tests.- ?hree out of t
17、he first i5 compensators, or less, sub- subjected to the following tests described under ttTest methodstt: 4.3.5 or .more of this number fails to meet the specified test(s), acceptance of all 3 I, 7 I 5 , - e- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
18、IHS-,-,-MIL-C-18023 bb W 99999Ob OL29b21 2 MIL- c -1 8023 ( Aer ) (May 1954) items shall be withheld until the extent and cause .of failure is determined. For operational reasons, individual tests may be continued pending investigation of a sampling test failure, but the final acceptance of the prod
19、uct is contingent upon the Inspec tor t s decislon regarding the over-all conformance of the product to specification requirements . If investigation indicates- “hat the defects may exist on items previously accepted, kill particulars concerning the defect(s) found, including recommendations for eor
20、rection, will be furnished to the procur- ing activity. Rejected compensators shall not be resubmitted for inspection without furnishing full particulars concerning previous rejection, All parts specimens, or assemblies destroyed in making tests required by this specification or drawings to determin
21、e compliance with the 4.4 specification or drawings, shall be in addition to the quantity speoified in the contraot or purchase order and shall be furnished without increasing the cost of the contract or order. However, in the event that a unit is darnaged during test, it may be reworked if feasible
22、 and resubmitted for inspection and aooeptanoe under the contract. 4.5 Iies t condlt Ions . - 4.54 Atmosphere conditions .- Unless otherwise specified, all tests re- of approximately 29.92 inches of mercury end at temperature of approximately 25OO (770F). Vlhen tests are made with atmospheric pressu
23、re or room temperature differing materially from the above values, proper allowance shall be made for the difference from the specified conditions. quired by this specification shall be made at an atmospheric pressure Vibration stand.- Khenever a vibration stand is specified, it shall consist of a d
24、evicwhich will vibrate at any desired frequency be- tween SOO and 3,000 cycles per minute and shall subject the compensator to vi- bration such that a point on the vibration stand shall describe in a plane in- clined 45 degrees to the horizontal a circle of the diameter specified herein. 4.5.2 Conne
25、ctions .- Where necessary the compensator shall be suitably * connected to an angle of attack transmitter and a power supply. To 4.5 .3 check the operation .of the compensator a simulated source of excitation voltage shall be substituted for the Computer Mk 86 Xod o. 4.6 406.1 Ekamination of product
26、.- Each compensator shall be carefully exam- catian not covered by applicable tests. hed to determine conformance with the requirements of .this specifi- 4.6.2 Mach Servo operation.- Each compensator shall be subjected to tests as requirc by the particular design and as approved by the procurinp: -
27、agency Adjustments and settings .- ined to determine conformance with the requirements of this specifi- Each compensator shall be carefully exam- cation and with the requirements of the particular design and as approved by the procuring agency. 4.6*3 Continuity and Accuracy.- Pressures shall be appl
28、ied to the pitot and static connections of the compensator to correspond to all com- 4.6.4 binations of Mach numbers of 0.8, 1.0 and 1.2 and standard atmspheric altitudes of sea level, 20,000 feet and 60,000 feet. For each such combination of Mach number and altitude, potentiome ters which electrica
29、lly. simulate the local trans- mitters shall Be connected to the .compensator and the compensator shall be sup- p_iied the_hVp voltages described in 3.2.3.frorn a simulator for the Cornsuter 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-180
30、23 (Aer ) (May 1954) Ihfk 86 Mod O. Ithen the and L simulators are rotated full travel the EM and. EgT voltages shall be observed for continuity and for limlting at E, = 5.0 +.5 volts rms. Subsequently, a(, shall be given values O, 5 and 10 degrees and pL values O, 23 degrees and the EaT and EpT che
31、cked for conformance with this specification. Vibration.- The compensator shall be mounted on a vibration stand and all th e circuits energized. ?he stand shall then subject the as- sembly to vibration so that a, point on the box describes a circle of. 0.012 to 0.018 inch diameter at gradually incr.
32、easing frequencies between 500 and 3,000 cpm in order to determine that the natural frequency of the mit does not fall mithin this mage. Le6 a6 High temperature operation.- The compensator v;ith all clrcuita mer- gized shall be subjeoted to 813 amblent temperature of 7OOC (1580) for a period of 3 ho
33、urs. At the end of this period and with the temperature maintained at 70C (158O) the compensator shall be subjected to the tests of 4.6.1. readings . 4.6.5 aie switch point readings shall be within 1 degree of the original Low temperature tes te- aie compensator with ali circuits energized shall be
34、subjected to an ambient temperature of -55OC for a period of 4.6 *7 3 hours and, while at this temperature, it shall be tested as in 4.6.1. 4.6 . 8 hours. ?he compensator shall not be oprating. Ayter the compensator has re- turned to room temperature it shall meet the requirements of 4.6.1. Low temp
35、erature exposure.- Ihe com ensator shall be subjected to ambient temperature of -65O +2OC (-E5O +3.6F) for a period of 48 Vibration endurance.- The conpensator with all circuits energized shall be mounted on a vibration stand and shall be subjected to 4b6.9 vibration so that a poirit on the compensa
36、tor describes a circle of 0.018 to 0.020 inch diameter at a frequency of 2,000 cpm for a period of 100 hours of this period there shall be no evidence of damage as a result of vibration. At the end 4.6.10 through components of each electrical receptacle and the case The insulation resistance measure
37、d between each pin of each receptacle and the case shall be a minimum of 20 megohms. Insulation strength.- A potential of 500 volts, dc, shall be applied between each pin (except those connected to ground either directly or Fungus resistance.- Ihe compensator shall be placed in a mold elfamber and s
38、hallbe sprayed with a suspension of freely sporulating inixed spores similar to those encounkered. in tropical climates. Distilled water, with or without a wetting agent, shall be introduced directly into a stock culture of one fungus and shaken gently without disturbing the agar. Ihhe spore suspens
39、ion shall then be pcured or sprayed through an atomizer ovei? the test sample, or the test sample shall be dipped into the spore suspension. Five groups of fungi are listed below and one fungus from each group shall be used. 4.6.11 Group I - Chaetomium globosum USDA iO42.4 or ?dyrothecium verracaria
40、 USDA 1334.2 Group II- Rhizopus nigricans S.N. 32 or Aspergillus niger USDA- 215-4247 Group III- Aspergillus flavus ATE No. 26 or . Aspergillus terreus PQMD82. j Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Group IV- Penicillium luteum USDA 1336.1
41、, enici 1 um spa KYDA 1336.2 or enicilum ci trinum ATIC 9848 Group V - Xennoniella echnata AMC Nor or Fusarium nonilif orme USDA lOOl?l Substitutions for the abovefungi may be made provided they are acceptable to the activity performing Qualification tests. ?he temperature of the chaniber shall be m
42、aintained at 30 +2OC (86O + .t percent. %e dwation of tEis .test s 2 11 be not less than i4 days. At the - option of the activity performing Qualification tests, tests on component of the instrument my be accepted in lieu of or in addition to tests on the assembled instrument. parts maintained at a
43、temperature of approximately 700 +2vC (158O tive humidity of 95 +5 percent for a period of 6 ours. At hour period the heatshall 1 cool for a period of 18 hours in this atmosphere in which the humidity rises to 100 percent as the temperature decreases. ?his cycle shall1 ficient number of times to ext
44、end the total time of test to 120 hou At the end of the 120-hour period. the relay assembly shall be subjected to the tests of 4*6,1. 1 l !me compensator shall be examined and there shall-be no evi- QQ-M-l5l for a period o? 50 hours. nal surface of the compensator shall be washed with distilled wate
45、r, air dried and, the compensator shall be subjected to the tests of 4.6.1. shall be examined and there shall be no evidence of external corrosion or de- terioration which will affect subsequent operation. 5. PREPARA TION FOR DELIVERY At the end of the ,50-hour period, the exter- ?he compensator I -
46、71 - - -* I type II, CLISS container. slip, Manufacturerfs Part No. ?y , SpecificaEion MIL-c-o (Aer). k pr ocur emen t only : Applicable data to be entered by the contractor. 5.3.1 In addition, the folloving marking shall be required for Air iiIE IN STORAGE AFTER (DATE)%*, !EIE INSTRUMENT SHALL BE T
47、ES TED AND INSPEC TED BEFORE ISSUE. I a Ihln dnta shall he nneciflsii hw the nmnnrrwina ac+ivittr Force Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-18023 bb 9999906 0127b24 B m MIL-c -18023 ( Aer ) ( WY 19 54 1 60 NOTE3 6-1 fntended use.- l
48、he compensator covered by this specification is in- tended for use in aircraft to supply compensated angles of attack and sideslip to the Aircraft Fire Control System Xk 16. 6.2 Ordering data.- Requisitions, contracts, and orders shall specify the part number of the compensator desired, quantity, an
49、d whether overseas packing is to be furnisheb (see Section 5 and Specification 1-6064). 6.3 Provisions for Qualification Tests.- ?he right is reserved to reject any bids on items which have not been subjected to the required tests and found satisfactory. The attention of the manufacturers is called to this provision, and they are urged to request authorization for tests of the items which th
