Jump to content


Photo

Does L15 Apds Have An Expiry Date?


  • Please log in to reply
65 replies to this topic

#61 Wiedzmin

Wiedzmin

    Crew

  • Members
  • PipPip
  • 1,235 posts
  • Gender:Male
  • Location:Russia, Leningrad

Posted 09 May 2018 - 0048 AM

It's not new, it's from the same document, they make same thing with 150mm plate for bd26 and later rounds, so for not inclined plates there will be much smaller numbers of penetration(test were done only on plates inclined up to 71-75 degrees) and if take to account that 427mm for L23A1 it's path of round inside inclined target but not it's penetration...
  • 0

#62 Interlinked

Interlinked

    Crew

  • Members
  • PipPip
  • 104 posts
  • Gender:Male
  • Interests:Cold war era tanks

Posted 09 May 2018 - 0637 AM

That's very weird. You can't determine penetration depth by simulating semi-infinite plate by just increasing the angle. The data you get from testing the same plate at different angles will be different for the same impact velocity.
  • 0

#63 methos

methos

    Crew

  • Members
  • PipPip
  • 830 posts
  • Gender:Male

Posted 09 May 2018 - 0719 AM

China does the same. They have one target plate (220 mm) for their 105 mm, 120 mm and 125 mm APFSDS rounds - they just change the slope for different rounds.


  • 0

#64 Stuart Galbraith

Stuart Galbraith

    Of the Veronica Cartwright Ilk

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 47,003 posts
  • Gender:Male
  • Location:Eloiland

Posted 18 May 2018 - 0242 AM

This clears up some of the mystery of why the data for L23 seems to vary so much. Thanks for that.


  • 0

#65 KV7

KV7

    Crew

  • Members
  • PipPip
  • 1,542 posts

Posted 23 May 2018 - 0316 AM

That's very weird. You can't determine penetration depth by simulating semi-infinite plate by just increasing the angle. The data you get from testing the same plate at different angles will be different for the same impact velocity.

If it is 'it's path of round inside inclined target' then that is going to not be especially inaccurate. The lower efficiency of angled plate vs APFSDS at non deflecting angles is mostly from a shorter channel due to dig in, so it will not show upward biased results if you measure the channel length, as it will if you use the LOS @ 90 deg.


  • 0

#66 Interlinked

Interlinked

    Crew

  • Members
  • PipPip
  • 104 posts
  • Gender:Male
  • Interests:Cold war era tanks

Posted 23 May 2018 - 0954 AM

Is there any way to see more of that document?


  • 0




1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users