NAVY MIL-I-22126 B-1972 INDICATOR TORQUEMETER ENGINE TURBOPROP《螺旋桨发动机扭矩指示器》.pdf

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1、MIL-I-22126B( AS) 17 August 1972 Supers edi na 1. SCOPE requirements use on P-3 a types : 1.1 1.2 MIL-I-S2126A(WP) 1 5 December 1964 MILITARY SPECIFICATION INDICATOR, TORQUEMETER, ENGINE , TURBOPROP This specification has been approved by the Naval Air Systems Command, Department of the Navy. Scope

2、- This specification covers design and all performance for procurement of turboprop engine torquemeter indicators for rcraft . classification - The indicktors shall be of the following Indicators with power-off flag. 90323- i 2-inch, lighted MS90323-2 3-i nch , 1 i gh ted MS90323-3 2-inch, non-light

3、ed MS90323-4 3- inch , non-1 i gh ted Indicators without power-off flag. MS90323- 5 3-inch, lighted MS90323 - 6 3-i nch , non-1 igh ted 2. APPLICABLE DOCUMENTS 2.1 General - The following documents, of the issue ineffect on the date of the invitation for bids, form a part of this specification to th

4、e extent specified herein. 3. -iL SPEC I FI CATIONS Federal BB-N-411 Ni trogen QQ-C-320 Chromium Plating (Electrodeposited) QQ-N-290 Nickel Plating (Electrodeposited) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A- -* * MIL-I-22L2bB bb m 797770b 0

5、330733 7 = _ MIL-I-22126B(AS) SPEC I FICATI ONS Federal (Continued) QQ-P-416 QQ-2-325 Militar y MIL-P-116 MIL-M-3171 MIL-E-5272 MIL-E- 5400 MIL-C- 5541 MIL-S-6872 MI L-S- 7742 MI L-A-86 25 MIL-C-14806 MIL- P- 23408 MIL- L- 25467 P1 at i ng , Cadmi um ( El ec trodepos i ted) Zinc Plating (Electrodepo

6、sited) Preservation, Methods of- Magnesium Alloy, Processes for Corrosion Protection of Envi ronmental Testing, Aeronautical and Associated Equipment, General Specification for Electronic Equipment, Aircraft , General Specification for Chemical Films for Aluminum and Al umi num Al 1 oys Soldering Pr

7、ocess, General Specificatio for Screw Threads, Standard, Optimum Selected Seri es , General Speci fi cation for Anodic Coatings, for Al umi num and Al umi num Al 1 oys strument Cover Glasses and Lighting Wedges P1 ati ng: Ti n-Cadmi um ( El ectrodeposi ted) Lighting, Integral , Aircraft Instrument,

8、General Specification for Coating, Reflection Reducing, for In- 4; 2 F - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-I-22726B (AS) SPEC I FICATI ONS Mi 1 i tary (Con ti nued) I f I c MIL-C-26482 MI L-B - 27 497 MIL-G-81704 STAN DARDS Feder

9、al FED-STD-595 Mi 1 i tary MI L- ST D- 1 O0 MIL-STD- 130 MIL-STD- 143 MIL - S TD - 4 5 4 MIL-STD-461 MIL-STD-462 MIL-STD-704 MIL-STD-756 3 Conn-ctors, Electric, C rcular, Miniature Quick Disconnect Bearing, Jewel Sapphire or Ruby, Synthetic Glass, Aircraft Instrument, Lighting Wedge and Cover Col or

10、s Engineering Drawing Practices Identification Marking of U.S. Military Property Specifications and Standards , Order of Precedence for the Selection of Standard General Requirements for Electronic Equipment Electromagnetic Interference Character- istics Requirements for Equipment Electromagnetic In

11、terference Character- istics, Measurement of Electric Power, Aircraft, Characteris- tics and Utilization of Reliability Prediction “- mu Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-2232bB 66 9999906 0330735 O i MIL-1-221 26B(AS) STAN DARDS

12、Mili tary(Continued) MI L-STD- 781 Reliability Tests Exponential Distribution MIL-STD -794 MIL- STD-889 Dissimilar Metals Parts and Equipment, Procedures For Packaging and Packing of MS 24367 MS24515 Lamp, Subminiature MS33 558 Numerals and Letters , Aircraft Instru- Lamp, Incandescent - Miniature I

13、ntegral Li gh ti ng ment Dial, Standard Form of MS33585 Pointers, Dial, Standard Design of Aircraft Instrument MC90323 Indicator, Torquemeter, Engine, Turboprop PUBLICATIONS NAVAL AIR SYSTEMS COMMAND AR- 5 AR-10 Microelectronic Devices Used in Avionics Equipment Procedures for Selection and Approval

14、 of Maintainability of Avionics Equipment and Systems, General Requirements for 2.2 Availability of documents - When requesting any of the applicable documents, refer to both title and number. specification and applicable documents may be obtained upon application to the Commanding Officer, Publicat

15、ions and Forms Center,Code 5801 Avenue, Philadelphia, Pennsylvania 19120. Copies of this Tabor 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-I-22L2bB 66 m 9999906 OL3073b 2 m 0 3. REQUIREMENTS 3.1 fication shall be a product which has been t

16、ested and meets the Quality Qualification - The indicators furnished under this speci- Assurance Provisions speclfied herein, and has been listed on or approved for listing on the applicable qualified products list. standards for necessary comnodi ties and services not specified herein shall be sele

17、cted in accordance with MIL-STD-143 except as provided in 3.2.1 and 3.2.2. 3.2 Selection of government documents - Specifications and 3.2.1 Comercial parts - Commercial parts having suitable prop- erties shall be used, where on the date of invitations for bids, there are no suitable standard parts.

18、In any case, comercial parts, such as screws, bolts, nuts, cotter pins, having suitable properties, may be used provided: (a) They can be replaced by the standard parts (MS or AY) without al teration. (b) The correspondi ng standard part numbers are referenced in the parts list and if practicable, o

19、n the contractors drawings . Standard arts - With the exception of 3.2.1, MS and AN + 3.2.2 standard parts sha e used where they suit the pureose. Thev shall be I1 identified on the drawings by their prt numbers. and shall be as specified herein. Materials for which there are no applicable I 3.3 Mat

20、erials - Materials shall conform to applicable specifications specifications, or which are not specifically described herein, shall be of the best quality, of the lightest practicable weight and suitable for the purpose i n tended. 3.3.1 Cri tical materials - Noncri tical materials shall be used whe

21、re practicable. Where the use of a critical material is essential to meet speci- fication requirements, the material used shall be the least critical of those which are adequate for the purpose. 3.3.2 used for all parts of the indicator except where magnetic materials are essential or required. 3.3.

22、3 shall be suitably protected as specified herein to resist corrosion due to fuels, salt spray or atmospheric conditions to which the instrument may be subjected when in storage, during normal service life, and when subjected to the tests specified herein. Non-magnetic materials - Non-magnetic mater

23、ials shall be Metals - Metals shall be of the corrosion resistant type, or 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-2212bB bb m 979790b 0130737 Li W MIL-I-22126B(AS) 3.3.3.1 Dissimilar metals - Dissimilar metais as defined in MIL-STD-8

24、89 shall not be used in intimate contact with each other, unless suitably protected against electrolytic corrosion by means 6f protective coatings. Protective coating will not be necessary if the metals are in a sealed atmosphere as de- scribed in 3.4.5.2. 3.3.3.2 treated in accordance with MIL-M-31

25、71. When abrasion resistance is a factor, an anodic treatment approved by the procuring activity shall be used. Aluminum alloy parts - Where practicable, aluminum alloy parts shall be covered with an anad4e film conforming to Specifleation MPL-A- 8625. Small holes, pipe threads and case inserts need

26、 not be anodized. Aluminum alloys which do not anodize satisfactorily shall be coated with a chemical film in accordance with MIL-C-5541. Magnesium alloy parts - Magnessum alloy parts shall be 3.3.3.3 3.3.3.4 Iron and steel parts - Iron and steel parts which are in hermetical ly sealed cases shall b

27、e cadmi um plated in accordance wi th QQ-P-416. Parts which are not in sealed cases shall be chromium, nickel, or zinc plated in accordance wlth QQ-C-320, QQ-N-290, or 04-2-325 respectively. Parts in a confined space in the presence of organic materials shall be tin-cadmium plated in accordance with

28、 MIL-P-23408. The class and type of plating shall meet the requirements of 3.3.4. 3.3.4 struction of conditions 1 i Protectlve treatment - When materials are used in the con- the indicator that are subject to atmospheric or environmental kely to cause corrosion in normal service life, they shall be

29、protected against corrosion in a manner that will in no way prevent compliance with the performance requirements of this specification. Finishes and pro- tective coatings which will crack, chip or scale during normal service life or are affected by extremes of atmospheric or envi ronmental condition

30、s , shall not be used. 3.3.5 Fungus-proof materials - Fiaterials which are nutrients for fungi shall not be used where it is practicable to avoid them. Where used, they shall be treated with a fungicidal agent acceptable to the procuring activity. If used in a hermetically sealed enclosure, fungicid

31、al treatment will not be necessary. instrument shall not produce corrosive, deleterious, or toxic fumes or vapors under all conditions specified herein. 3.3.6 Fumes and vapors - Materials used in the construction of the 3.4 Design and construction - 3.4.1 Signal from the transmitter - The indicator

32、shall accept from the torquemeter transmitter a 2 phase signal whose peak-to-peak voltage is constant at 13820 RPM, throughout the range of phase displacement, the voltage difference between the two phases does not exceed 10 percent of the 6 Provided by IHSNot for ResaleNo reproduction or networking

33、 permitted without license from IHS-,-,-MIL-I-2222bB bb 9 7999906 0230738 b 9 MIL-I -221 26B( AS) larger value, and whose phase difference varies linearly with torque or with indicated horsepower at 13820 RPM*. phases) will be a modified sinusoidal wave with characteristics as shown in Figure 1. The

34、 d.c. resistance of efther signal source, i., either torquemeter pickup coil , is 2.5M.5 ohms. mately 4.1 ohms. The input signal waveform (both At 9.2 KHZ its impedance is approxi- (See 6.6 for cautionary information.) RANGE 2.6 4.6 10 .o L FREQUENCY , KHZ T, TOTAL PERIOD, p SEC - 400 21 8 1 O0 X, N

35、EGATIVE SLOPE PORTION OF TOTAL - 100-150 28-38 PERIOD , MI CROS ECON DS E, PEAK TO PEAK AMPLITUDE, VOLTS 0.40,MIN. O .75 ,MIN. 0.75,MIN. O .60 ,MAX. 6 .O ,MAX. 6 .O,MAX. 1.5 ,NOM. Figure 1. Input Signal Waveform The relationship that exists in the transmitter between electrical degrees of phase disp

36、lacement and torque is fixed for any particular transmitter but may vary from transmitter to transmitter in the manner de- scri bed below : (a) The torque is zero for some phase difference in the interval 45 f_ 8.4 degrees. (b) The slope of the phase difference versus torque line is 17.96 - + 0.27 h

37、orsepower per degree of phase difference. *Hereafter when horsepower is mentioned in this specification, horsepower at 13820 RPM is implied. transmitter has a frequency Of approximately 9.213 KHz at 13820 RPM engine torque shaft speed. The electrical output signal from the torquemeter 7 Provided by

38、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-I-22LZbB bb = 99999Ob 0330739 13 I- - M1-1-22126 (AS) - An alternative way of stating the above is that the signal coming from the transmitter will have a phase difference which varies with horsepower as in th

39、e equation below. relationship from transmitter to transmitter is as shown in the constants of this equtition, Furthermore, the variation in this + 45 + 8.4 Horse ower 17,6p+ - o.27 - Phase Difference = 3.4.2 Indicator adjustments - The indicator shall be provided with a zero adjustment, identified

40、as “CAL A“, a slope adjustment, identi- fied as “CAL BI, and a two pole-triple throw switch. The adjustments and switch shall be permanently attached to the back of the indicator, shall be operable using only a screwdriver, and shall be constructed and mounted on the indicator so as to preclude inad

41、vertent movement of the adjustments or switch position during handling and normal use. The two adjustments and switch shall be sufficient for fitting the indica- tor to the characteristics of a particular transmitter. to match the indicator to the torque transmitter of the engine, using only the inf

42、ormation in 6.5 and the aforementioned switch and adjustments. It must be possible The adjustments shall be provided with stops at either end of the range of each adjustment and shall allow setting within the range of adjustment (see 4.6.3) to within - + 1 HP. When the switch is in the center positi

43、on both the reference and torque signals shall be supplied to the indicator mechanism. When the switch is in the position identified “A“, the reference input signal shall be interrupted. interrupting the signal input to pin D of the indicator. The interruption shall be equivalent to When the switch

44、is in the position marked “B“, the torque signal shall be interrupted. signal input to pin B of the indicator. The interruption shall be equivalent; to interrupting the It shall also be possible to calibrate the indicator utilizing the adjust- ments in connection with the CAL “A“ - CAL “B“ switches

45、shown in the interconnecting wiring harness of Figure 2. 3.4.3 Maintenance - The design shall be reasonably simple to facilitate as much as possible disassembly, repair or overhaul, service maintenance, and reassembly using those tools and items of maintenance equipment which are normally available

46、as commercial standards. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FIGURE 2. WIRING 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-2232bB bb 777770b 0330743 b W MIL-1-221268( AS) 3.4.

47、4 Power-off flag - Where specified in 1.2, the indicator shall be provided with a power- off flag. The flag, marked with the legend “OFF“, shall be visible through the cover glass when the system is de-energized. When the system is energized, a blank sign of the same color as the dial background sha

48、ll appear in place of the legend. 3.4.5 Case - The case shall conform to MS90323. The case and mounting flange shrbe made of non-ferrous, low density metal, uniform in texture, having a smooth surface and shall be hermetically sealed. The case shall be finished with a lusterless black material, Colo

49、r No. 37038 of FED- STD-595. The finishing material shall be of a durable type to withstand usage encountered in service and the tests specified herein. 3.4.5.1 Hermetic sealing - The case shall provide a hermetically sealed enclosure fmchanism. The case shall be so constructed that it may be opened, the mechanism removed and replaced and the case re- sealed at least t