John Breed, Diary and Training diary, item 77

• March 27, 2017 04:15:55 Cheryl Ellsworth

  Forcement; the pressure necessary to make the

  projectile take the rifling in BL guns
  

  _________________________________
  

  Energy; The work stored up in the projectile at the

  moment considered. It depends on its weight
  

  and velocity.
  

  
  

  Formula for finding Energy
  

  E=W. V^2           = Energy in foot tons

      2gx2240

  
  

  W= Weight of projectile in lbs

  V = Velocity of projectile in foot seconds

  C = A constant 23-2 the ace in due to gravity

  _________________________________
  

  Direct Laying; When the gun is laid by looking over or

  through the sights at the target
  

  _________________________________
  

  Indirect Laying; When the gun is laid for direction on

  an aiming post or an aiming point,- the
  

  Angle of Sight is adjusted by dinometer 
  

  and the Elevation by the range
  

  indicator or drum
  

  _________________________________
  

• February 24, 2017 20:39:30 Erin Gordon

  Forcement;          the pressure necessary to make the

                                projectile take the rifling in BL guns
  

  
  

  Energy;          The work stored up in the projectile at the

                          moment considered. It depends on its weight
  

                          and velocity.
  

  
  

                      Formula for finding Energy
  

  E=W. V^2           = Energy in foot tons

      2gx2240

  
  

  W= Weight of projectile in lbs

  V = Velocity of projectile in foot seconds

  C = A constant 23*2 the ace in due to gravity

  
  

  Direct Laying;           When the gun is laid by looking over or

                                      through the sights at the target
  

  
  

  Indirect Laying          When the gun is laid for direction on

                                       an aiming post or an aiming point,- the
  

                                        Angle of Sight is adjusted by dinometer 
  

                                          and the Elevation by the range
  

                                          indicator or drum
  

  
  

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