John Breed, Diary and Training diary, item 74

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Jump; The angle between the Line of Departure and

the axis of the axis of the piece before firing. It is due to

the vertical movement of the gun on firing

                                                  

N.B; Jump arises from the gun and carriage + shooting

in a vertical plane on its point of support in rear,

when the gun is fired and takes effect before the

projectile leaves the bore

With no jump the Jump of Departure, and the 

axis of the piece before firing would be identical

                                                  

Angle of Descent; The angle which the trajectory makes with

the Line of Sight at the point of their second

intersection, or in other words it is the angle

made by a tangent to the trajectory at the

point of impact with the horizontal plane

                                                  

Slope of Descent; The angle of descent is sometimes called

Slope of Descent and expressed as 1

in 10 or 1 in 12. This means that the shell

at the end of its trajectory falls 1 foot

vertically whilst travelling 10 or 12 feet      

Transcription saved

Jump; The angle between the Line of Departure and

the axis of the axis of the piece before firing. It is due to

the vertical movement of the gun on firing

                                                  

N.B; Jump arises from the gun and carriage + shooting

in a vertical plane on its point of support in rear,

when the gun is fired and takes effect before the

projectile leaves the bore

With no jump the Jump of Departure, and the 

axis of the piece before firing would be identical

                                                  

Angle of Descent; The angle which the trajectory makes with

the Line of Sight at the point of their second

intersection, or in other words it is the angle

made by a tangent to the trajectory at the

point of impact with the horizontal plane

                                                  

Slope of Descent; The angle of descent is sometimes called

Slope of Descent and expressed as 1

in 10 or 1 in 12. This means that the shell

at the end of its trajectory falls 1 foot

vertically whilst travelling 10 or 12 feet      


Transcription history
  • March 27, 2017 03:19:04 Cheryl Ellsworth

    Jump; The angle between the Line of Departure and

    the axis of the axis of the piece before firing. It is due to

    the vertical movement of the gun on firing

                                                      

    N.B; Jump arises from the gun and carriage + shooting

    in a vertical plane on its point of support in rear,

    when the gun is fired and takes effect before the

    projectile leaves the bore

    With no jump the Jump of Departure, and the 

    axis of the piece before firing would be identical

                                                      

    Angle of Descent; The angle which the trajectory makes with

    the Line of Sight at the point of their second

    intersection, or in other words it is the angle

    made by a tangent to the trajectory at the

    point of impact with the horizontal plane

                                                      

    Slope of Descent; The angle of descent is sometimes called

    Slope of Descent and expressed as 1

    in 10 or 1 in 12. This means that the shell

    at the end of its trajectory falls 1 foot

    vertically whilst travelling 10 or 12 feet      

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    ID
    17035 / 198313
    Source
    http://europeana1914-1918.eu/...
    Contributor
    Mrs Jean Hanby
    License
    http://creativecommons.org/licenses/by-sa/3.0/



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    • Artillery
    • Trench Life



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