User:blockhaj/30 mm ADEN autocannon

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This will become a user made history and data article on the 30 mm ADEN autocannon.

History

WIP: The ADEN autocannon (acronym for of Armament Development Enfield) is a basically a German 30 mm MK 216 revolver cannon reworked to be produced in British factoriers. Britain, along with the allies, captured the prototypes of the WIP 30 mm MK 216 in Germany at the end of the war and decided to finish the development for their own use. The US developed the gun into the 20 mm FMC T-160 (later redesignated to 20 mm M39) and the French developed it into the 30 mm DEFA series.

The British ADEN was originally more or less just a 1-1 copy of the German 30 mm MK 216, even using the 30×90mm RB cartridge but in the end it entered service with a 30×86mm cartridge (later with the suffix A).

Variants

  • 30 mm ADEN Mk1 – 30x86mm A variant
  • 30 mm ADEN Mk2 – 30x86mm B variant
  • 30 mm ADEN Mk3 – 30x111mm variant
  • 30 mm ADEN Mk4 – 30x113mm variant
  • 30 mm ADEN Mk5 – Mk4 with raised ROF
  • 30 mm ADEN Mk6 – unknown changes
  • 25 mm ADEN – 25x137mm variant

Specifications

25-30 mm ADEN autocannon specifications
Variant 30 mm Mk1 30 mm Mk2 30 mm Mk3 30 mm Mk4 30 mm Mk5 30 mm Mk6 25 mm ADEN
Design
Type Single-barrel aircraft autocannon
Action Revolver drum with 5 chambers ?
Operation Gas operation ? ? ?
Cocking-system Pneumatic ? ? ?
Priming Electric
Firing system ? ? ? 24 volts Direct current (DC)
115 volts Alternate current (AC)
?
Data
Cartridge 30 × 86 mm A 30 × 86 mm B 30 × 111 mm 30 × 113 mm 25 × 137 mm
Rifling ? ? ? Progressive RH parabolic twist, 16 grooves ?
Length of complete weapon ? ? 1590 mm 1639 mm ?
Weight of complete weapon ? ? ? 87.1 kg ? ? ?
Length of barrel ? ? ? 1080 mm ?
Weight of barrel ? ? ? 12.25 kg ?
Recoil load (normal) ? ? ? 22.4 kN ?
Recoil load (max) ? ? ? 31.4 kN ?
Rate of fire (effective) 1,380 rpm 1,600 rpm ?
Rate of fire (minimum) 1,200 rpm 1,500 rpm ?
Rate of fire (maximum) 1,500 rpm 1,700 rpm ?

Ammunition

30 × 86 mm A (Low Velocity)

30 × 86 mm B (Low Velocity)

30 × 111 mm (High Velocity)

30 × 111 mm HV – explosive shell cartridges
Cartridges RAF designation Cartridge, 30mm, Aden gun,
SAF designation 30 mm sk ptr m/55
Projectiles RAF designation HE Mk.3Z HE Mk.5Z HE Mk.6Z
SAF designation 30 mm mgr m/55 n/a 30 mm mgr m/55
Projectile type HEHC HEHC HEHC
Charge type Torpex 5 (Hexatonal) Torpex 5 (Hexatonal) Torpex 5 (Hexatonal)
Fuzes RAF designation FP, D.A., No. 933, Mk. 1 FP, D.A., No. 944, Mk. 1 FP, D.A., No. 933, Mk. 1
SAF designation ö k sar m/55 n/a ö k sar m/55
Type Nose fuze
Propellant type British NC powder British NC powder ÅKB 106 or NC 1058
Casing type Brass Brass Passivated
Dimensions
Cartridge length 199 mm 200 mm 199 mm
Shell length (total) 115 mm 117 mm 115 mm
Shell length (external) 89 mm 90 mm 89 mm
Casing length 111 mm
Weights
Cartridge weight 438 g 496 g 440 g
Projectile weight 226 g 270 g 220 g
Main charge weight 56 g 48 g 52.5 g
Fuze weight 28 g ? 28 g
Propellant weight 46 g 46.5 g 46 g
Casing weight 166 g 166 g 174 g
Net explosive content of cartridge 102 g 95 g 98.5 g
Net explosive content of projectile 56 g 48 g 52.5 g
Performance
Copper units of pressure 2930 Bar 2930 Bar 2930 Bar
Muzzle velocity 795 m/s (at +20° C) 720 m/s (at +20° C) 795 m/s (at +20° C)
30 × 111 mm HV – solid projectile cartridges
Cartridges RAF designation Cartridge, 30mm, Aden gun,
SAF designation 30 mm sk ptr m/55
Projectiles RAF designation n/a P Mk.2Z P Mk.4Z
SAF designation 30 mm pprj m/55 30 mm övnprj m/55 30 mm övnprj m/55
Projectile type APCR-BC TP (Inert HEHC) TP (Inert HEHC)
Core type Tungsten penetrator  Solid metal plug in place of fuze and explosive charge
Propellant type British NC powder British NC powder ÅKB 106
Casing type Brass (early) Passivated (late) Brass Passivated
Dimensions
Cartridge length 199 mm 199 mm 199 mm
Shell length (total) 115 mm 105 mm 115 mm
Shell length (external) 89 mm 89 mm 89 mm
Casing length 111 mm
Weights
Cartridge weight 483 g (early) 491 g (late) 438 g 440 g
Projectile weight 270 g 226 g 220 g
Core weight 150 g 80.5 g
Propellant weight 47 g 46 g 46 g
Casing weight 166 g (early) 174 g (late) 166 g 174 g
Net explosive content of cartridge 47 g 46 g 46 g
Performance
Copper units of pressure 2930 Bar 2930 Bar 2930 Bar
Muzzle velocity 720 m/s (at +20° C) 795 m/s (at +20° C) 795 m/s (at +20° C)

30 × 113 mm (High Velocity)

Abbreviations

Royal Air Force

  • HE = High Explosive
  • HEHC = High-Explosive, High-Capacity (Mine shell, aka Minengeschoß)
  • AP = Armor Piercing
  • APCR = Armor-Piercing, Composite Rigid
  • P = Practice
  • TP = Target Practice
  • FP = Fuze, Percussion

Swedish Air Force

  • sk ptr = skarp patron (live cartridge)
  • mgr = mingranat (high explosive, high capacity shell)
  • pprj = pansarprojektil (armor piercing projectile)
  • övnprj = övningsprojectil (practice projectile)
  • ö k sar = ögonblickligt känsligt spetsanslagsrör (instant, sensitive, nose contact fuze)