John Breed, Diary and Training diary, item 145
Transcription
Transcription history
-
Wind Corrections
Many theoretical formulae have been
calculated, which are supposed the exact allowance for a
wind of gun strength
A rough estimate of the deflection per thousand yards
in the range necessary to allow for a wind blowing directly
across the line of fire is as follows
15 minutes when the wind is Very Strong
10 " " " "Strong"
7 " " " "Fresh"
5 " " " "Moderate"
In the case of howitzers these amounts should be slightly
increased in practice the above figures are only useful
as a very rough first approximations, for the force of the
air cannot be determined, neither the direction of the wind
in the upper regions, with any approach to certainty from the
conditions prevailing at the ground surface. Fortunately for
the gunners the higher winds are much less variable than the
surface winds, and a correction based on the actual fall
of the shell usually gives good results
-
Wind Corrections
Many theoretical formulae have been
calculated, which are supposed the exact allowance for a
wind of gun strength
A rough estimate of the deflection per thousand yards
in the range necessary to allow for a wind blowing directly
across the line of fire is as follows
15 minutes when the wind is Very Strong
10 " " " "Strong"
7 " " " "Fresh"
5 " " " "Moderate"
In the case of howitzers these amounts should be slightly
increased in practice the above figures are only useful
as a very rough first approximations, for the force of the
air cannot be determined, neither the direction of the wind
-
Wind Corrections
Many theoretical formulae have been
calculated, which are supposed the exact allowance for a
wind of gun strength
A rough estimate of the deflection per thousand yards
in the range necessary to allow for a wind blowing directly
across the line of fire is as follows
Description
Save descriptionLocation(s)
- ID
- 17035 / 198384
- Contributor
- Mrs Jean Hanby
- Western Front
- Artillery
- Trench Life
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