Royal Navy Battleship 15" Gun Breech mechanism

Royal Navy Battleship 15" Gun Breech mechanism
Test animation showing Breech Screw Lever, Hinge Bolt, Obturator, Axial Vent Bolt, Latch Retaining Breech Screw Closed, Breech Safety Contacts, Hydraulic Operating Gear, Box Slide and Electric Lock

[@gregoryclark8217]

I really like how the stepped nature of the interrupted thread allows for about 3/4 of the circumference of the breech to be locking surface, with only about 30° of rotation. Approximate numbers but you get the idea.
The designer that came up with that idea was brilliant. Without the stepped interrupted thread, you can only have up to 180° of locking surface.

[@stevphenrose7820]

I think that this concept was originally designed by the French 🤔

[@wotuwant201]

Remember, someone thought of this without computer aid.

[@bradfordrick1]

Slide rules are computers. Sent Neil and Buzz to the moon with them.

[@ichabodon]

Graphics out of this world. Beautiful presentation. Thank you RNbreech

[@rnbreech4194]

Thanks a lot - much appreciated!

[@neilwilson5785]

It's so intricate, and it's huge. A 15" gun is a beast.

[@russellnixon9981]

An excellent peace of animation and brilliant engineering.

[@corporalpunishment1133]

This is truly outstanding and beautiful animation.

[@Kemomimisky]

Great!
Beautiful mechanical works.

[@cozmcwillie7897]

Really quite beautiful.

[@welshpete12]

Beautifully done thankyou for posting !

[@Dan-re7go]

Great clips. Thank you.

[@rnbreech4194]

Thanks for watching!

[@ichabodon]

Fantastic CGI video again RNbreech

[@pnp072000]

Thank you RNbreech for this amazing animation! How was the obturation on this? Is it a Welin breech?

[@rnbreech4194]

Thanks a lot. Yes it is a Welin breech block - I've done another animation showing how each part of the mechanism works (including the obturator). Link to animation is below:
ruclips.net/video/ytMjChHQEfU/видео.html

[@StaK_1980]

@0:40 - Can I ask, what is that small hole in that massive copper (?) breach?

[@rnbreech4194]

The hole is a chamber that runs the length of the axial vent (bronze) . A vent tube (firing tube or primer) is placed in this chamber - when it is discharged, the gun is fired. 00:25 shows this vent tube being extracted at the lock end of the axial vent.

[@abizair1832]

So, just like screw-lock bottles but with a twist, right?

[@rnbreech4194]

Yes - kind of. Below is a quote from the handbook regarding what happens when the breech screw locks into the bush:
"As the breech screw is turned it travels forward, due to the pitch of its thread, forcing the obturator into its seating."

[@HeeroYuy180]

make flak 88 36 system, plz.

[@GodofWeird]

Fimally