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Random Museum Ordnance Photos

Post #604Base. Images 3 + 4.

Base fuze No 878 Mk. I Introduced in 1944. For 5 inch Rocket 30lb HE shell and 3 inch aircraft rocket 60lb HE/SAP shell (I have conflicting records for what the fuze was used with. Both sources agree to the 3” RP) This is stamped with a ‘N’ to indicate it is a Naval store.

Alas, I the only diagram I have is subject to copyright. The operation is similar to a No. 12 Base Fuze. There is a thermal initiator below the fuze which is ignited by the rocket motor. Behind the perforated disc is a copper disc attached to a rod. When the thermal initiator ignites, the gas pressure distorts the copper disc which in turn pushes forward the rod which releases the striker and a safety shutter thus arming the fuze.

Manufactured by Roneo Ltd.
Filled by ROF Bridgend.

TimG
 
TimG said:
Post #604Base. Images 3 + 4.

Base fuze No 878 Mk. I Introduced in 1944. For 5 inch Rocket 30lb HE shell and 3 inch aircraft rocket 60lb HE/SAP shell (I have conflicting records for what the fuze was used with. Both sources agree to the 3” RP) This is stamped with a ‘N’ to indicate it is a Naval store.

Alas, I the only diagram I have is subject to copyright. The operation is similar to a No. 12 Base Fuze. There is a thermal initiator below the fuze which is ignited by the rocket motor. Behind the perforated disc is a copper disc attached to a rod. When the thermal initiator ignites, the gas pressure distorts the copper disc which in turn pushes forward the rod which releases the striker and a safety shutter thus arming the fuze.

Manufactured by Roneo Ltd.
Filled by ROF Bridgend.

TimG
Click to expand...

cutaway and drawings in this thread http://www.bocn.co.uk/vbforum/threads/3795-3-60Lb-S-A-P-rocket-British-WW2?highlight=rocket
 
Good spotting. These photos are from 4-5 of the largest museum collections in the US, some have similar items and it is hard to keep straight which items have already been shown. I have also caught myself a few times with the same exact photos and know that I have double listed some on more than one occasion. I'll try to keep them straight, but don't be too surprised -
 
I'll check the files when I get home tonight for additional photos.

We found a number of these rounds at a burial site in Ethiopia 7-8 years ago, while looking for evidence of chemical weapons. X-ray showed the heavier internal construction.
 
Didn't recall that Joe had shown this one previously. That makes it easy.
 
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