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Fuze delay in aerial antiship bombs

Posted: Sat Nov 09, 2019 2:02 am
by marcelo_malara
Hi guys. I am looking for delay times. Contrary to artillery shells, which activated on impact and had a delay of about 10 milliseconds to the explosion, aerial bombs seemed to have a very long 8-15 seconds delay, don´t even know if the delay is post impact or post launching. Does anyone have info on this?

Regards

Re: Fuze delay in aerial antiship bombs

Posted: Sun Nov 10, 2019 7:15 pm
by dunmunro
marcelo_malara wrote:
Sat Nov 09, 2019 2:02 am
Hi guys. I am looking for delay times. Contrary to artillery shells, which activated on impact and had a delay of about 10 milliseconds to the explosion, aerial bombs seemed to have a very long 8-15 seconds delay, don´t even know if the delay is post impact or post launching. Does anyone have info on this?

Regards
Bomb fuze delays were a bit longer than for naval artillery shells, which were typically 25-40 milliseconds for AP shells, but certainly not 8-15 seconds. There was a safety device which might take a few seconds to activate the bomb's actual fuze, and the typical delay for a SAP or AP bomb fuze might be 50 to 100 milliseconds.

Re: Fuze delay in aerial antiship bombs

Posted: Sun Nov 10, 2019 7:17 pm
by OpanaPointer

Re: Fuze delay in aerial antiship bombs

Posted: Mon Nov 11, 2019 8:03 am
by Thorsten Wahl
german bombs many different types depending on type of target . throwing height, underwater detonation....

SC and SD types
delay 0,12 s
if the armor stops the bomb
nondelay at 800g(SC 800) - 6000g(SD 1700) deceleration depending on type of bomb

armor piercing
PD 1000 two settings
a) "non delay" = 0,045 s (from 6000 m against 180 mm deck)
b) delay = 0,075s (low throwing heigt)

PC 1000, PC 1400
delay 0,1 s

Minebombs
delay 0,12 s detonation within 10-15 m waterdepth

Re: Fuze delay in aerial antiship bombs

Posted: Mon Nov 11, 2019 8:13 pm
by marcelo_malara
Thanks guys, That times make sense. I can no longer find the 8-15 sec delay info, I remember it being used in bombs involved in the skip bombing technique used in the Pacific.

Re: Fuze delay in aerial antiship bombs

Posted: Tue Nov 12, 2019 2:35 pm
by Thorsten Wahl
Instructions for the use of bombs against ship targets
ZahlentafelBomben.jpg
(113.98 KiB) Not downloaded yet
penetration capabilities
dive attack =500 km/h, throwing height 1,2 km, impact angle 60° (90° = perpedicular to plate)
impact speed about 280 m/s for all
(RS =rocketdriven)
PC 500 RS 190 mm
PC 1000 RS 180 mm
PC 1800 RS 180 mm

PC 500...1800 (without rocket) dive attack as above impact speed around 180 - 190 m/s ; 80 - 100 mm

the RS types had significantly reduced charge.