Tango01  | 17 Nov 2020 9:12 p.m. PST |
Of possible interest?
link
Amicalement
Armand |
| donlowry | 18 Nov 2020 8:47 a.m. PST |
Interesting. I didn't know that the Pak 40 even used HEAT! |
| Tango01 | 18 Nov 2020 10:55 a.m. PST |
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| Andy ONeill | 19 Nov 2020 10:33 a.m. PST |
There were at least two different pak40 heat rounds. |
| Tango01 | 19 Nov 2020 11:18 a.m. PST |
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| Hornswoggler | 22 Nov 2020 1:54 a.m. PST |
The only HEAT round produced in significant numbers for the PaK 40 was the 7.5cm Patr H1/B. It came into use as the tungsten ban forced the discontinuance of APCR rounds. But with a muzzle velocity of only 450mps (less than the HE round fired by the same weapon) it was difficult to accurately engage moving targets – a bit of a drawback for an anti-tank gun! There were at least two different pak40 heat rounds. Only if you count the fin-stabilised unspun projectile being developed at the end of the war, but never successfully completed…? |
| Andy ONeill | 22 Nov 2020 3:02 a.m. PST |
Maybe my memory is playing up but i thought there was hl/a and hl/b as well. |
| Hornswoggler | 23 Nov 2020 2:19 a.m. PST |
While various patterns of hollow charge round (Hl, Hl/A, Hl/B, Hl/C) were produced for other guns (eg the 75mm L24), I have only found references to a 'B' type shell in use with the PaK 40. |
| Mobius | 23 Nov 2020 3:51 a.m. PST |
H. Dv. 481/58 Merkblatt fur die Munition der 7,5 cm Sturmkanone 40 und Kampfwagenkanone 40
The HL/B and HL/C are included. |
| Hornswoggler | 25 Nov 2020 6:58 p.m. PST |
… 7,5 cm Sturmkanone 40 und Kampfwagenkanone 40
The HL/B and HL/C are included. Thanks for the reference. But wasn't the chambering of the StuK 40 and KwK 40 completely different to the PaK 40? |
| Mobius | 26 Nov 2020 4:08 a.m. PST |
I have a image of Munition der 7,5cm Pak 40 Dec 1942 page which has a line for the Hl/A 4,4kg and Hl/B 4,57kg. I found this too:
Deckblatter Nr.1 bis 8 (dated February 1945) and H.Dv. 119/11 vom December 1944:
7.5 cm Gr 38 HL/B and C for the K7M, FK7M85 and Pak40 with 450 m/s muzzle velocity: range in meters/velocity meters per second/(50% streuung (breite/hohe))/flugzeit in seconds-- 100/436/(0/.1) .2
250/417/(.1/.2) .6
500/388/(.2/.3) 1.2
750/362/(.5/.5) 1.9
1000/340/(.6/.7) 2.6
1250/323/(.8/1.1) 3.3
1500/311/(1/1.4) 4.1
1750/301/(1.3/1.7) 5
2000/292/1.5/2.1) 5.8
2250/284/(1.8/2.8) 6.6
2500/277/(2/3.4) 7.5
2750/270/(2.4/4.3) 8.4
3000/264/(2.7/5.1) 9.4
3500/252/(3.5/7.4) 11.4
4000/243/(4.4/10) 13.5 I probably found these on Axis History forum Ron Klages Panzer section. |
| Mobius | 26 Nov 2020 5:57 a.m. PST |
Actually, I found I have a copy of the firing table for the above Hl/B and Hl/C Pak 40. |
| Warspite1 | 08 Dec 2020 2:40 a.m. PST |
The Germans developed HEAT for a number of weapons but the problem was that the spin of the projectile – caused by the rifling of the barrel – degraded the penetration. There was even a version for the 88mm. Its only real value was with short-barrelled low velocity weapons such as the short 75mm in the early Panzer IV and late Panzer III. These weapons were too short to throw an effective kinetic AP round so a HEAT projectile made some sense.
See:
link Probably the largest HEAT or shaped-charge weapon used by the Germans was the Mistel – a glider bomb with a warhead of just under two tons reckoned to be capable of penetrating seven metres of concrete.
See:
en.wikipedia.org/wiki/Mistel Barry |
