1、u - MLIThY SPECIFICATION 1, SCOPE 1.1 This specification covers one type of 12 inch f/4,0, 9 x 9 inch format, aircraft reconnaissance camera lens cone, utilizing an intra-lens ehutter and diaphragm, designated Type C-3. for use mith the Type DS camera body, and is a component of the Kk-2(- 1 camera,
2、 The lens cone,is intended 2.1 The following specifications, standards, and drawings, of the issue in effect on the date of invitation for bids, form a pdrt of this specification to the extent specified herein: SPECIFICATIONS EIrI3-6601 XIIrJi6691 mGA-7653 LIIL-P-7815 114494 Body, Still Picture, Air
3、craft Reconnaissance Canera, Type D-4 hns, Camera, Aerial Reconnaissance and Spotting, 12 Inch, fA.0, 9 x 9 Inch Format Amplifier, Electronic Control, Servo Xotsr, Universal Camera Control System, !type E-1 Posts, Aerial Camera Lens, Focusing Camera, stili Picture, Aircraft Reconnaissance, Type KA-2
4、( ) AIR FCBICE-NAVY BEROHAUTICAL AN-F-bO Film; Aerial Photographic u. s. m Filters; Photographic (Por Aircraft Cameras) Nlter Unit, Type A-9 (For Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-52Dlt3S01 52D18503 bns Cone, brial Camera, Type C-3 (E i
5、nch.: 8 Body, Still Picture,. Aircraft Reconnaissance Camera, Type D-4, Outline of fA.0, 9 x 9 inch Format), Outline of (Copies of specifications, stanckrds, and driawings required by“ conkractors in ConnectYon with, specific procurement functions should be obtained from the Procuring Agency or as d
6、irectedby th; cmtkacting officer i ) 3 e REQUIItEiIIEf.!TS 3.1 General.- The requirements specified in Specification MGC-?lS and securely fixed to the shutter and lens assembly, shall be employed to position the assembly in the cone. 3.3.2.3 Resolving power.- The effective resolving power, as determ
7、ined with the lens mounted in the camera, shall conform to the resolvi% power test requirements of Section 4. 3.3.2.4 Filter.- Each lens cone shall be provided with two filter units. conforming as nearly as practicable (except in size) to the requirements for: the Type A-9 filter unit, Specification
8、 No. 75-421; the bayonet lock con- struction of the A-9 filter unit shall be employed. One filter unit shall contain a red filter cell, the other a yellmi ilter cell, both conformhw to Specification No. 75-53, Type III. . 3.3.3 Shvtter.- The shutter shall be of the intra-lens high efficiency type. 1
9、/50, and 1/25 second shall be provided. The speed shall be defined as the total actual time open, or the tim9 from the beginning of the opening period to the end of the closing period. volt dc pulses for opening (IIkI pulse) and closing (tiBl1 pulse) spaced apart by the values of Tale I, the shutter
10、 total open time shall be the values given in Table i within I 5 percent at SOo k 20 F. Shutter speed shall not vary from this originally measure4 speed at GOg F by more than 10 percent over the range of temperatures and conditions specified under “Environmental and durability testsll. ireadily sele
11、ctable operating speeds of 1/400, l/3OO, 1/200, 1/100, then the shutter is supplied with 26 TABU 1 Time Interval Between IlA“ and UP Pulses (Milliseconds) *(%oretid aiuss) . Shutter Speed (Second) 1.10 1/400 1.93 1/300 3.60 1/200 8.60 -/lo0 lt3 CI 50 ja .60 * Actual vaims are to be supplied and used
12、 after the first ten camera cones have been built and tested. 3.3.3.1 Chutter.release.- Means shall be provided to fix the shut-er in a sufficiently open position for purposes of focusing or calibr;ition 7,:ode1 O, or equal, tho motor Wly excited as shown in Figure 1, the diaphragm shall.move from t
13、he minimum aperture to the rated maximum aperture of each lens cone in not less than 1.5 seconds or more than 2.5 seconds at go9 ?: 20 F, servo motor and nechanism in such a manner that, when the potentiometer is connected and excted as showri in figure 2 and the exposure transducer out- put voltage
14、 is.set by turning the manual control output connection the corresponding diaphragm aperture diameter shall have the value shown in . Table XI withiin f 5 percent ali an ambient temperature of goo i: 20 b and within f 10 percent throughout the temperature range of Oo E to 160 P. The servo shall also
15、 contain a gear ratio such that with 3.3.4.2 A potentiometer shall also be provided and coupled to the TUIE II Exposure Transducer Diaphragn Votage - Volts Aperture - Inches u(Thereotica1 Values) . 0.72 2.4g 0,457 1.7 0,255. 10228 0.073 0.6W 0.443 0.49 . 0,886 * Actual values are to be supplied and
16、used after the fir camera cones have beet built and tested. t ten 9,3.4.3 A single-pole, double throw snap-action switch shall be The switch circuits shall be connected to the mechanism such that the switch is actuated when the diqhragm reaches its maximum aperture. as shown frr Eguse 3 ( ac, 400 cy
17、cles, and the shutter tripping pulses by internal connection $9 the Type D-4 cmera bCly; gQiWoO and the fact that the Government may have formulated, furnished, or in any may supplied the said drawings, specifications, or other data, is not to Tic regarded by implication or otherwise as in any niarmer licensing the holder or any other person or corporation, or conveyin& any rights or permission to manufacture, use, or sell any patented invention that may Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
