1、AMSC N/A FSC 5985 MIL-DTL-85/2E 26 March 2009 SUPERSEDINGMIL-DTL-85/2D 20 November 1998 DETAIL SPECIFICATION SHEET WAVEGUIDES, RIGID, RECTANGULAR (HEAVY WALL) This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The requirements for acquiring the wav
2、eguides described herein shall consist of this document and the latest issue of MIL-DTL-85. NOTE: Eccentricity shall be .010 inch (0.25 mm) maximum for Part or Identifying Numbers (PINs) M85/2-001 through M85/2-005 and .004 inch (0.10 mm) maximum for PINs M85/2-006 through M85/2-009. The eccentricit
3、y of the waveguide is defined as one-half the difference between opposite wall thicknesses as measured at any cross-section perpendicular to the longitudinal axis. FIGURE 1. Waveguide, rigid, rectangular, heavy wall. REQUIREMENTS: Design and construction: See figure 1. Physical dimensions: See table
4、 I Closure and coating: All surfaces of the waveguide shall be coated with noncorrosive oil in accordance with MIL-PRF-3150. The ends of the waveguide shall be sealed with plastic caps. Length: Unless otherwise specified in the contract, 240 +12, -0 inches (6096 + 304.8, -0 mm). Bow: In accordance w
5、ith MIL-DTL-85, except the bow, for any orientation, shall be no more than .015 inch (0.38 mm) edgewise and .020 inch (0.51 mm) flatwise between any two points 2 feet apart on the concave external surface of the waveguide. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitt
6、ed without license from IHS-,-,-MIL-DTL-85/2E 2 PIN: See table I. Material: See table II. NOTES: Resistivity and conductivity of materials: See table II. Frequency range and engineering information: See table III. TABLE I. Physical dimensions. Dimensions PIN 1/ M85/2- Inside Outside Nominal wall Max
7、. inner Max. outer Width (A) Height (B) Width (C) Height (D) thickness (E) corner radius (F) corner radius(G) 001, 002, 004 2.840 .005 (72.14) (0.13) 1.340 .005 (34.04) (0.13)3.238 .004 (82.25) (0.10)1.738 .005 (44.15) (0.13) .199 (5.05) .0468 (1.19) .125 (3.18) 003, 005 1.872 .005 (47.54) (0.13) .8
8、72 .005 (22.14) (0.13)2.172 .005 (55.16) (0.13)1.172 .005 (29.76) (0.13) .150 (3.81) .0310 (0.79) .125 (3.18) 006 1.872 .003 (47.54) (0.07) .872 .003 (22.14) (0.07)2.122 .005 (53.90) (0.13)1.122 .005 (28.50) (0.13) .125 (3.18) .030 (0.76) .031 (0.79) 007 1.122 .003 (28.50) (0.07) .497 .003 (12.62 (0
9、.07) 1.378 .005 (35.00) (0.13).753 .005 (19.12) (0.13) .128 (3.25) .030 (0.76) .031 (0.79) 008 .900 .003 (22.86) (0.07) .400 .003 (10.16) (0.07)1.100 .005 (27.94) (0.13).600 .005 (15.24) (0.13) .100 (25.4) .030 (0.76) .031 (0.79) 009 .900 .003 (22.86) (0.07) .400 .003 (10.16) (0.07)1.300 .005 (33.01
10、) (0.13).800 .005 (20.32) (0.13) .200 (5.08) .030 (0.76) .031 (0.79) 1/ The complete PIN shall be the number shown and a three-digit number indicating length in inches (e.g. M85/2-001-240). 2/ Metric equivalents (to the nearest .01 mm) are given for general information only and are based upon 1 inch
11、 = 25.4 mm. Metric equivalents are given in parentheses. TABLE II. Typical resistivity and conductivity of materials. PIN M85/2- Material Resistivity (microhm-cm)max at 20C) Conductivity Aluminum 001-xxx Alloy 1100 2.90 57 percent 002-xxx Alloy 6061 4.00 40 to 45 percent 003-xxx Alloy 1100 1/ 2.90 5
12、7 percent 004-xxx Alloy 6063 3.40 50 percent 005-xxx Alloy 6063 3.40 50 percent 006-xxx 007-xxx OF-DLP copper 008-xxx in accordance 1.77 101 percent 009-xxx with ASTM B372 1/ Temper shall be H112 with a minimum tensile strength of 11,000 pound-force per square inch (lbf/in2)(75.842 MPa). Provided by
13、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85/2E 3 TABLE III. Cross index and engineering information. PIN M85/2- AN type designation Frequency range (GHz) TE10mode Cutoff forTE10mode (GHz) Theoretical attenuation lowest to highest frequency (dB/10
14、0 ft) Theoretical CW 1/ power rating lowest to highest frequency (kilowatts) Theoretical peak power 2/rating lowest to highest frequency (megawatts) 001-xxx RG-375/U 2.60 - 3.95 2.08 .950 - 0.651 14.56 - 21.25 7.645 - 10.85 002-xxx - 2.60 - 3.95 2.08 1.116 - 0.764 12.39 - 18.08 7.645 - 10.85 003-xxx
15、 - 3.95 - 5.85 3.155 1.785 - 1.238 5.637- 8.127 3.296 - 4.697 004-xxx - 2.60 - 3.95 2.08 1.028 - 0.705 13.48 - 19.63 7.645 - 10.85 005-xxx - 3.95 - 5.85 3.155 1.933 - 1.340 5.206 - 7.506 3.296 - 4.697 006-xxx - 3.95 - 5.85 3.155 1.399 - 0.970 6.961- 0.05 3.296 - 4.697 007-xxx - 7.05 - 10.0 5.780 2.7
16、79 - 2.159 3.066 - 2.382 1.284 - 1.702 008-xxx - 8.20 - 12.40 6.560 4.339 - 3.003 4.788 - 3.314 0.758 - 1.124 009-xxx - 8.20 - 12.40 6.560 4.339 - 3.003 4.788 - 3.314 0.758 - 1.124 1/ Based on H. E. King, “Rectangular Waveguide Theoretical CW Average Power Rating”, IRE Transactions PGMTT-9, pp. 349-
17、357, July 1961. Assumes 1:1 VSWR, 30C ambient air and 71C waveguide temperature (governed by personnel safety requirements). To calculate for other situations, see H. E. King. 2/ Based on considerations of breakdown varying with frequency and waveguide size as outlined in Gould and Gildens “Handbook
18、 of High Power Capabilities of Waveguide Systems” (available from Microwave Associates, Burlington, MA). For practical applications, these values should be reduced by a factor of 5. SAMPLING AND INSPECTION: All waveguides of the same material and same cross section offered for delivery at one time s
19、hall be considered a lot: N - pieces (lengths). _ Inspection of dimensions and visual inspection of surface shall be performed on a sample of n = 2N (e.g., If N = 200 pieces, the sample n = 2 x 200 = 20 pieces.) The sample for profilometer measurement of surface roughness and eccentricity shall be 1
20、 foot in length, cut from either end of a selected length. The lot shall be accepted or rejected in accordance with a zero defective sampling plan. Lots that fail shall be 100 percent inspected for the defect identified and then resampled. Referenced documents. In addition to MIL-DTL-85, this docume
21、nt references the following: MIL-PRF-3150 ASTM B372 Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 5985-2009-014) Review act
22、ivities: Army - AR Navy - AS, MC, OS Air Force - 99 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
