Profile image

Ju 288G-1 (KG53 "A1+EH" w/ SG104 355mm Recoilless Rifle)

9,320 vcharng  1.4 years ago
Auto Credit Based on vcharng's [SU1946] OKB-1 140 (Junkers EF-140) Z

About the Plane:

The Junkers Ju 288G was a planned designation for a special model of the Ju 288 bomber that features a gigantic 355mm (about 14 inches) recoilless rifle for anti-ship warfare. The concept was first envisioned by the Luftwaffe in 1939, but was later abandoned after the rifle damaged the Do 217 airframe with its powerful blast wave during test fire. With more feasible anti-ship weaponry coming up in later days of WWII, the Luftwaffe turned to rockets and guided munitions for their anti-ship demands.

About the Gun:

The Sondergerät SG104 (lit. "Special Device 104") was a 355mm recoilless rifle designed for anti-ship purposes in early 1940s. With a loaded total weight of over 4200kg, it fires a single 700kg 14-inch shell at an initial velocity of 300 m/s. It was projected to be fired in a deep dive, allowing the shell to accelerate to about 449-468 m/s at impact.

The rifle underwent ground testing in September 1940, with a Do 217 airframe attached above it. Unfortunately, the strong blast of the gun (and the reflection of the ground) still seriously damaged the airframe, causing the Luftwaffe to stop pursuing any further tests. If this was ever tested in the air, it would be the largest caliber gun ever mounted on an aircraft.

About the Livery:

The Kampfgeschwader 53 "Legion Condor" was a bomber wing that seen extensive service during WWII European theater. Its role was mostly tactical bombing and direct ground support.

This particular aircraft bears registration A1+EH, with three ship kill marks. Historically the KG53 was not tasked with marine attack roles, but some similar squadrons did hit the Normandy invasion fleet at port.

Controls:
AG1: Flap
AG2: Cowl flaps master (adjusted automatically)
AG3: Discard rifle (for emergency landing and short landing)
AG8: Engine ignition
Cam 1: shell camera
Cam 2: rear seat

Note that this aircraft tends to yaw right initially when taking off. Use rudder to correct this.
This aircraft uses constant-speed propellers, the maximum thrust comes at about 75% "throttle". For high-altitude you may increase that to 80%.
Historically the SG 104 was single shot, but for game purposes I allowed this to reload, with a 30 second reload time.

Some additional cockpit photo:

^ From left: Vertical speed, fuel, turn coordinator, artificial horizon, altitude and airspeed, compass, manifold pressure.


^Top to bottom: Manifold pressure, fuel, oil pressure x4, RPM. Right side is ignition and fuel mixture, and to the far right is the cowl flap crank.
This aircraft uses a DB610 "power system" which is essentially two DB605s combined into one engine, that's why it has 4 ignitions and 4 oil pressure gauges.


^Dive angle indicator to the left of the pilot, showing 60 deg (red), 70 (yellow) and 80 (black)

Spotlights

General Characteristics

  • Predecessor [SU1946] OKB-1 140 (Junkers EF-140) Z
  • Created On Windows
  • Wingspan 69.4ft (21.2m)
  • Length 60.3ft (18.4m)
  • Height 17.9ft (5.5m)
  • Empty Weight 26,323lbs (11,940kg)
  • Loaded Weight 31,086lbs (14,100kg)

Performance

  • Horse Power/Weight Ratio 0.189
  • Wing Loading 56.9lbs/ft2 (277.7kg/m2)
  • Wing Area 546.6ft2 (50.8m2)
  • Drag Points 8115

Parts

  • Number of Parts 501
  • Control Surfaces 6
  • Log in to leave a comment
  • Profile image
    9,320 vcharng

    @ThomasRoderick Well this thing was a WWI concept that the luftwaffe came up in 1940... it's already outdated.
    Torpedoes are expensive, that's why they tried to find a cheaper solution.
    That's why this thing fell out of favor when rocket munitions and guided bombs came out.

    +1 1.4 years ago
  • Profile image
    9,320 vcharng

    @Shippy456 To simulate the nature of "recoilless" rifle, and to give it a look closer to the real thing.

    1.4 years ago
  • Profile image
    4,349 Shippy456

    Why is there a cannon facing the rear?

    1.4 years ago
  • Profile image

    Sooooo... a dragonfly with a massive schlong? Also, I'm pretty sure they are the only ones to think "hey why don't we strap a capital-grade cannon to a plane" instead of "how about just dropping battleship shells from the air"... I mean, pretty much the anti-capital ship weapon of everyone else is "an AP shell from a battleship, with fins bolted on" or "a torpedo, with less fuel than their ship-borne brethren"...

    +1 1.4 years ago
  • Profile image
    3,294 Subnerdica

    Noice

    1.4 years ago
  • Profile image
    25.1k Tetrodotoxin

    Alien with a big gun. Nice!

    1.4 years ago
  • Profile image
    43.8k Tang0five

    This I’ve got to try, thanks for sharing! @vcharng

    1.4 years ago
  • Profile image
    9,320 vcharng

    @Tang0five You engrave the cockpit camera point in the solid object.If you engrave the cockpit right on the boarder between two adjacent solid object, both will be transparent.
    Note this doesn't work for hollow fuselage. only solid fuslage, sphere, hemisphere etc.

    +1 1.4 years ago
  • Profile image
    43.8k Tang0five

    Some rather nice details here and I like the background info. With regards to the cockpit how did you get a solid object to be see through from the inside?

    1.4 years ago
  • Profile image
    92.5k MrSilverWolf

    Nice!

    1.4 years ago
  • Profile image
    7,977 UraniumOxide

    @vcharng Very cool!

    1.4 years ago
  • Profile image
    9,320 vcharng

    @thefalkenreich

    1.4 years ago
  • Profile image
    9,320 vcharng

    @MrPorg137
    @MrSilverWolf
    @AircraftoftheRedStar

    1.4 years ago
  • Profile image
    9,320 vcharng

    @Wi1dSk7
    @thecrusader
    @BoganBoganTheMan

    1.4 years ago
  • Profile image
    9,320 vcharng

    @Thelegitpilot13
    @RailfanEthan
    @Random40

    1.4 years ago
  • Profile image
    9,320 vcharng

    @CrashFighter05
    @Sm10684
    @Miyubiaircraft

    +1 1.4 years ago
  • Profile image
    9,320 vcharng

    @emanuelga
    @Strikefighter04
    @Evenstsrike333

    +3 1.4 years ago
  • Profile image
    9,320 vcharng

    @TheFantasticTyphoon
    @HarrisCraft
    @Imashovel

    1.4 years ago
  • Profile image
    9,320 vcharng

    @FranzPeterSiegfried
    @TheSolarFlare
    @Aarons123

    1.4 years ago