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Figure 1-16.Suspension lug installation
Figure 1-18.Arming wire assemblies

Aviation Ordinanceman - Aviation theories and other practices
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NOSE PLUGS There are two basic nose plugs (fig. 1-17) used in general  purpose  bombs,  the  solid  nose  plug (MXU-735/B and MXU-735A/B) and the ogive nose plug. The ogive nose plug provides a pointed arch. A support cup is used in the nose well with the ogive nose plug to provide a solid structure to the bomb. The MXU-735 solid nose plug is designed to provide better penetration of hard targets, without the likelihood of nose plug shearing during oblique impact. The MXU-735 replaces the ogive nose plug and support cup. IDENTIFICATION The high-explosive filler of the bomb (H-6) is identified by the yellow stenciled nomenclature on the bomb body and yellow band(s) around the nose. The lot number is stenciled in white ink on the forward end of the bomb. All Mk 80 (series) general-purpose bombs currently being used aboard ships are required to be thermally protected. Thermally protected Mk 80 series bombs can be identified by the words THERMALLY PROTECTED in the identification legend, a bumpy exterior surface, and two yellow bands around the nose. ARMING WIRE ASSEMBLIES Arming wire assemblies (fig. 1-18) are used for arming procedures during ordnance evolutions. The primary function of arming wire assemblies is to maintain ordnance components in a safe condition until actual release of the bomb from the aircraft. Normally, the wires consist of one or two brass or steel  metal  strands  attached  to  a  swivel  loop.  Safety Fahnstock  clips  (fig.  1-18)  or  safety  clips,  MAU  166, are  attached  to  the  ends  of  the  arming  wires  after installation.   They   prevent   premature   or   accidental withdrawal of the arming wires from the component. NOTE:   Safety  clips  are  used  vice  Fahnstock clips unless otherwise specified. Normally,  arming  wire  assemblies  are  shipped  in spiral-wound fiber tubes, over packed in a wooden box. Generally, the safety Fahnstock clips are packed in the tubes with the arming wires. The most commonly used arming wire assemblies are listed in table 1-3. Arming wire installation procedures are discussed in   the   TRAMAN   where   the   use   of   arming   wire assemblies is required. FIN ASSEMBLIES Fin assemblies, used with the Mk 80 (series) LDGP bombs,  provide  stability  to  the  bomb.  They  cause  the bomb  to  fall  in  a  smooth,  definite  curve  to  the  target, instead of tumbling through the air. The  fin  assemblies,  except  the  MAU-91A/B,  are shipped on metal pallets. Each individual fin is crated in a lightweight, disposable metal crate (fig. 1-19). Some fin assemblies are shipped with bomb lugs attached to the shipping crate, depending upon the particular Navy Ammunition Logistics Code (NALC). Two  types  of  fins  are  described  in  this  part  of  the TRAMAN—conical  and  Snakeye.  The  conical  fin  is 1-20 Figure 1-17.—Nose plugs.







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