NAVY MIL-S-7780 B-1956 STARTERS ELECTRIC CONSTANT CURRENT DC《 DC直流恒电流电气起动器》.pdf

1、 . . - -_I_. ElILS-7780B( AE31) 30 URCH i956 Superseding 1 December 1952 ML-S-7780A EIILITARY SFECIFICATION srmTEns; ELECTIIC, CONSTAUT CUHENT, DC This specification has been approved by the Bureau of Aeronautics, Department of the Navy 1. SCOPE 1.1 Scope.- This specification covers electric variabl

2、e-voltage direct-current starters for operation from a COnStant-Current power Bource for starting turbojet and turbo-prop mgines. 1.2 Classification.- Starters shall be of the following types: Type E-3: torque of 135 pounds-feet. Tgpe E-4: torque of 61 pounds-feet. 2. APPLICABLE WCUPIENTS Starters h

3、aving a rated output drive speed of 850 rpm and a rated output Starters having a rated output drive speed of 2000 rpm and a rated output 2.1 The following specifications, standards, drawings, and publications, of the issue in effect on date of invitation for bids, form a part of this specification t

4、o the extent specified herein: SPECIFICATIONS Federal PPP-w1 NN-P-515 “N-B-JlC Military MIL-D-5026 MILLS480 MILL6880 MIGP-U6 MIL-P-6906 NILS-7742 MUrB18364(AM) JAN-A-669 JAN-P-1% STANDAKDS MIL-STD-129 Boxes, Wood, Cleated-Plywood Plywood, Container Grade Boxes, Mood, Wirebound, (For Domestic shipmen

5、t) Drawings and Data Lists; Preparation of (for Engines, Accessories and Other Auxiliary Equipment) Data; Engineering and Technical (Reproduction Thereof) Lubrication of Aircraft, General Specification for Preservation, methods of Plates, information and Identification Screw Threads, Standard, Aeron

6、autical Bulletins; Aircraft Power Plant, Propeller, Auxiliary Power and Starting Unit;. Preparation of Anti-Seise Compound, White Lead Base, eneral Purpose (for Threaded Fittings) Packaging and packing, for overaeaa shipnent,bores, wood nailed . Marking of Shipments 1 -. Provided by IHSNot for Resal

7、eNo reproduction or networking permitted without license from IHS-,-,-MIL-S-7780B 27 9777706 OLb177 7 , I Air Force-Navy Aeronautical Staxdard Zrawings AND10398 AiD20m2 AND20304 l.ietds - Definition of iiissimilar grive - me XII Engine Accessory *ive - Type XIV Engine Accessory FU i3LICATIONS Air Fo

8、rce-havy Aeronautic Use of No. 166 Colors; List of Standard Aircraft fflossy No. 182 Katerial Changes and Substitutions; Aircraft Engine Parts (Froduction Contracts) No. 343 Specifications and Standards Applicable to Aircraft Engines and Propellers; Use of NO. 391 Changes; Engineering, to Aircraft h

9、gines, Propellers, and Aeronautical Equipment in Production and Service (When requesting specifications, standards, drawings, and publications refer to both title and number. application to the Commanding Officer, Navai Aviation Supply Depot, Philadelphia 11, Pennsylvania, Attention: Code ODPT) . 3.

10、 !U?,QUIRE?ENTS which has been tested and has passed the qualification tests specified herein. siiitable for the purpose and shall conform to applicable Government specifications. Materials conforming to contractors specifications may be used provided the specifications are released by the Governmen

11、t and contain provisions for adequate tests. The use of contractors specifi- cation will not constitute waiver of Government inspection. in constant contact with lubricating oil, shall be of a corrosion-resisting type or shall be suitably protected to resist corrosion. The use of dissimilar metals,

12、as defined by Drawing AWD10398, shall be avoided wherever practicable. 3.2.2 Specifications and standards for all materials, parts, and Government certification and approval of processes and equipment, which are not specifically designated herein and which are necessary for the execution of this spe

13、cification, shall be selected in accordance with ANA Bulletin Mo. 143, except as provided in the following paragraph. Standard parts (Bas, AN, or JAh) shall be used wherever they are suitable for the purpose, and shall be identified on the drawing by their part numbers. Commercial utility parts such

14、 as screws, bolts, nuts, cotter pins, etc., may be used, provided they possess suitable properties and are replaceable by the standard parts (MS, AN, or JAN) without alteration, and provided the corresponding standard part numbers are referenced in the parts list and, if practicable, on the contract

15、ors drawings. corresponding standard part in effect on date of invitation for bids, commercial parts may be used provided they conform to all requirements of this specification. 3.3 Design and construction.- voltage constant-current power source. as to withstand vibration and other severe usage enco

16、untered under service conditions. The starters shall be capable of being operated throughout a temperature range of -55O to +7OoC (-67O to +1589), and shall not be damaged when exposed to temperatures from -75O to +13S0C Copies of this specification and applicable specifications may be obtained upon

17、 3.1 Qualification.- The starters furnished under this specification shall be a product 3.2 Materials.- Materials used in the manufacture of starters shall be of high quality, 3.2.1 Metals.- All metals used in the construction of starters, except metals which are Selection of materials.- 3.2.2.1 Sta

18、ndard parts.- in the event there is no suitable The starters shall be designed to operate from a variable- They shall be of compact design and of such construction (-103 to +27S0F). c 2 a- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i.%S-7”7803(

19、AEII) 3.3.1 Ehviromiental conCitions.- consideration shall be given in the design of starters for satisfactsry operation during azd after exposure to any conbination of the following conditions in world-wide operation: HwLdity, fungus, sunshine, rain, snow, sleet, hail, ice-fog, fog, milew, salt spr

20、qT, ice, ozone, smoke, wind, sand, and dust. 3.3.2 Ratio interference.- The starter shall be designed to minimize the generation of radio interference. Enclosing case construction shall provide continuity of electrical shielding with a low radio-frequency impedance path to ground and across all mech

21、anical discontinuities. 3.3.3 Mounting and drive provisions.- 3.3.3.1 Quick detachable mounting.- Starters shall be provided with a quick detachable mounting of a design pprovd by the procuring activity. special tools for its use. It shall be automatically locked when on the engine, and there shaU n

22、ot be any unattached parts, such as clamp rings, bolts, or nuts when the starter is removed from the engine. Any adapter required formodifying the engine accessory drive in order to mount the starter shall be furnishedwith the starter, but it shall be considered as permanently.attached to the engine

23、 after initial installation. The design of the quick- detachatde mounting shall be such as to permit installation and removal of the starter when there is access to the starter at anjr one position. This mounting shall not require 3.3.3.2 Accessory drive.- Type E-3 starters shall be suitable for mou

24、nting on Drawing Type IL and with the exception that magnesium-alloy paris shall receive two coats of primer ahd a minimum of two finish coats as described above. finishes on any part thereof is cowidered impracticable of unnecessary, and when omission of any or all paint finishes is specifically ap

25、proved by the procuring activitp. 3.7.2 Additional parts may be excepted when application of paint (a) Metal sprayed surfaces (b) Corrosion-resisting steel, brass, copper or bronze parts (c) Cable (d) Working surfaces (e) Threads (f) oil holes (g) Cadmium-plated parts (h) Unalloyed aluminum-clad dwn

26、inum alloy (i) Parts fabricated from 2s, 3s, 529, and 619, aluminum alloy (when anodized) (j) Surfaces of casting identification pads when suitably protected from corrosion 3.7.2.1 Primer coat.- The primer coat shall be a zinc-chromate primer. The primer shall by other means. be applied as soon as p

27、ossible after prior surface treatments or coating. The primer coats shall be thoroughly dried prior to application of the finish coat(s) in order to prevent any consolidation of the primer or finish coats. When the primer coat is soiled or damaged by intervening operations between priming and finish

28、 coats, it shall be thoroughly cleaned and another light coat of primer added before the finish coat is applied. enamel or aluminum-pigmented varnish. Enamel other than that of aluminum color, shall match the applicable color of the Air Force-Navy aircraft color standards (glossy) and MA Bulletin No

29、. 166. 3.7.2.2 Finish coat.- The finish coat for the basic starter shall be heat-resistant Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. , 3 .e - - - MIL-S-7780B 27 W 9777706 0186203 5 a . 3.9 Lubrication.- The component parts of the starter requ

30、iring lubrication shall be -_1 properly lubricated in accordance with Specification 1*EL-L-6880 when shipped and shall operate satisfactorily wheii in this condition. 3.9 Threaded -a;rts.- 3.9.1 Screw threads.- Screw threads shall conform to Specification bL-S-?742. 3.9.2 Coating threaded parts.- Al

31、l threaded parts, except electrical terminals and safeQ-stop mits, shall have a thin coating of compound conforming to Specification JAN-A-669 applied to the threads. No more of this compound shall be applied than is necessary to cover the surface of the threads. 3.9.3 Safetying.- Provisions shall b

32、e made to prevent all screws and screw parts from accidental loosening, by safety wiring or fitting with safety-stop nuts, where applicable. other connections liable to be loosened by vibration shsll be safetied in a similar manner. 3.9 Performance.- The starter shall satisfy the performance require

33、ments specified in t. of 1030 amperes. tures specified in paragraphs b.h, b.s.8.1 and 4.5.8.2. This test shall be conducted at the tempera- 4.5.4 Continuous torque.- The starter shall be checked to determine that the output speed is not less than that specified in Table I with a starter terminal vol

34、tage of 29 to 30 volts, an input current limited to a maximum of 1000 amperes, and an applied continuous torque within the range specified in Table I. 4.5.5 hfficienc .- The over-all efficiency of the starter at rated torque shall not be less thmut at an input voltage of 30 volts, plus O, minus 1. T

35、ABLE II Endurance Test PHASES : Type : FQuheel Folar : A B C : Moment of : RFVi to which : 10 seconds at : RPH to which flywheel : : inerti? : flywheel shall : following con- : shall be accelerated : : lb-f t : be accelerated : ditions : within 12 seconds : within 8 sec. : RPK : Torque : : LD-ft : :

36、 (Fin) : ; E-3 : 379 850 : 250 : 135 13bO : E-4 : so 1330 :lSU : 61.0 : 2950 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.5.7 . shall be equivaient to an endurance test cycle as defined in paragraph L.5.6. . and rest periods shall not be permitt

37、ed during this test. - The output of the starter on each cycle shall be L.5.9 Consecutive operation.- The starter shall be operated for five consecutive Cooling Pir L.6 Acceptance stomp.- U accepted starters sha be stamped with Inspectors official acceptance stamp. 5. PREPARTION FOR DELIVERY 5.1 App

38、lication.- The requirements specified herein apply only ta direct purchases 5.2 Packaging.- 5.2.1 Level A.- by or direct shipments to the Goverment. Unless otherwise specified, each starter shall be packaged for shipment in accordance With specification MIL-P-116. Method Il3 of this Specification sh

39、all be employed for all starters designated as installation starters. Method d of this specification shall be employed for all starters designated as spare starters. 5.2.2 Level 5.- Starters shall be packaged in accordance with standard comercial practice. 5.3 Packing.- Shipping containers in-so-far

40、 as tcable, shall contain an identical number of articles,. shall be of a uniform size, and shall be designed to enclose the contents n a snug, tight-fitting manner. When packed for shipment, the gross weight of the exterior container shell not excee 200 pounds. require overpacking. 5.3.1 Level A.-

41、in an eater-pping container in accordance with Federal specification PPP-5601 (overaeas type) or JAN-P-l6. specification NN-P-515. Starters placed in metal cans or wood boxes do not Starters packaged in accordance with paragraph 5.2.1 shall be Packed Plywood if used shall conform to type II class 1

42、or 2 of Federal 5.3.2 Level B.- Starters packaged as specified in paragraph 5.2.1 shall be packed in exterior zLE;CiT:IC, CONSTANT CLWtEXT, Dc Specification ?1IL-S-7780B( AlB) Date of I%inufacture Type 6. NOTES 6.1 Intended use.- and turbo-prop engines. number, the type dexnation of starter desired

43、and level of packaging and packing required. Agrement should be made as to whether Government furnished containers will be furnished. These starters are intended for use in starting aircraft turbojet 6.2 Ordering data.- Requisitions, contracts, and orders should state this specification 6.2.1 Drawin

44、gs.- A starter contractor shall, as soon as praccicable after the award of a contract for starters conforming to this specification, furnish the following drawings for each model starter on contract, unless the latest revisions have been previously submitted. Government contracts for equipment, whet

45、her procured directly by the Government or through another contractor, require that dl drawings submitted, must be in accordance with the requirements of Specifications MLD-5028 and MIL-D-5480. 6.2.1.1 Drawing requirements.- The attention of contractors is invited to the fact that complete set of de

46、tail, assembly, subassembly, and sent to the following destination8 U. S. Naval Air Station Johnsville, Pennsylvania Attention: Technical Records Division 6.2.1.1.2 Blue rints One complete set of blueprints or equivaent made from the above- mentioned vandydi-shall be sent to each of the follouing de

47、stinations: Bureau of Aeronautics Department of the Navy Washington 25, D. C. Attention Plan Files Aviation Supply Office Fhiladelphia, Pennsylvania NiCrofibn.- One complete set of detail, subassembly, assembly, and installation 6.2.1.1.3 - drawings on microfilm shal be sent to the follouing destina

48、tion: Bureau of Aeronautics Department of the Navy Washington 25, D. C. Attention: Power Plant Division 6.3 aification.- With respect to products requiring qualification, awards will be made only or such products as have, prior to the bid opening date, been tested and approved for inclusion in the a

49、pplicable Qualified Products List whether or not such products have actually been so listed by that date. 6.3.1 The attention of suppliers is called to this requirement, and manufacturers are urged to comicate with the Supply Officer, Naval Air Material Center, the activity responsible for qualification, U. S. IJaval Base Station, Philadelphia 12, Pennsylvania, Attention: .I- ( Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I