1:72 Messerschmitt Me 510 A-2/U5 "Bremse"; 8./JG26, Flensburg; summer 1946 (Luft ‘46/whif/kitbashing)

+++ DISCLAIMER +++

Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!

 

The Messerschmitt Me 510 was a further development of the Me 410 Hornisse ("Hornet"), a German heavy fighter and Schnellbomber used by the Luftwaffe during World War II. The 410 itself had a troubled start, because it essentially had only been a straightforward modification of the Me 210, which had suffered from serious stability flaws and had a bad reputation among its crews.

 

The 410 handled bettr but did not show much improvement in performance, though. Me 410 deliveries began in January 1943, two years later than the original plan had called for, and continued until September 1944, by which point a total of 1.160 of all versions had been produced by Messerschmitt Augsburg and Dornier München. When it arrived, it was liked by its crews, even though its performance was not enough to protect it from the swarms of high performance allied fighters they faced.

 

Still not giving up on the original construction (and with the jigs and tools still available), Messerschmitt started in early 1944 with research into further means of improving the Me 410's performance. One direction was the addition of one or two jets under the fuselage as boosters for combat situations.

Another design path, which eventually led to the Me 510, was the development of turboprop and compound engines as propulsion options, which were based on the respective pure jet engines but offered much better performance and fuel economy than the pure jets. It would also be the more efficient solution compared to added turbojets for pure piston planes, since no dead weight had to be carried, and the overall system was less complex than a mixed powerplant system.

 

This turboprop concept, as best compromise between performance and short-term readiness for service, was chosen and the modified aircraft, called Messerschmitt Me 510, came to be. The design target was to outperform the Me 410 with as little change to the overall construction as possible, so that old tooling could be used for new aircraft cells. Alternatively, old aircraft should potentially be converted to the improved standard.

 

Core of the new development was the compact HeS 021 turboprop, a PTL development of the HeS 011 jet engine which was also planned for Focke Wulfs FW P.0310226-127 fighter (a turboprop version of the light 'Flitzer' day fighter). This engine was theoretically to deliver up to 3.300hp (2.426 kw) shaft output, plus 1.100kg (2.424 lb) additional thrust, even though serial types would produce less power under the aspect of reliability.

 

In order to incorporate this engine into the modified Me 410 a new main wing with laminar profile and new engine nacelles had to be designed. The HeS 021sat in the front part of the engine nacelles above the wings, driving four-bladed propellers. The landing gear retracted into the nacelle's lower section, rotating 90°, much like the Me 410, with the exhaust running above the landing gear wells.

 

In order to improve directional stability further, the tail surfaces were slightly enlarged, receiving characteristic, square tips. The fuselage was more or less taken from the original Me 410, since it offered a very good field of view and appropriate aerodynamics. With this package, the idea of retrofitting former Me 410 cells was kept, even though later flight tests showed that some more detail modifications had to be made. Most of these concerned the internal structures, the most obvious external change was the nose section, where the original glazing had to be reinforced and finally replaced by solid material – an experience similar to the modification from Douglas’ piston-driven XB-42 to the faster, jet-driven XB-43 of the same era.

 

Maiden flight of the first prototype took place in Augsburg on 6th of May 1945, with little problems. As benchmark, the Me 410's maximum speed was 625 km/h (388 mph), a cruise speed of 579 km/h (360 mph) and a combat range of 2.300 km (1,400 mi) with up to 1.000 kg (2,204 lbs) of disposable stores carried in- and externally.

 

The overall flying characteristics of the Me 410 did not change much, but rate of climb and top speed were considerably improved. In level flight, the third prototype Me 510 V3 reached a top speed of 812 km/h (504 mph), and even the serial version with added armament and equipment easily reached 750 km/h (465 mph) top speed and a cruising speed with no external stores of 650 km/h (405 mph). At its time, the Me 510, which quickly received the rather inofficial nickname "Bremse" (Horsefly), was superior to its pure piston engine and turbojet rivals, even though it was clear that the turboprop was only a preliminary solution.

 

Due to its high speed and under the pressure of Allied bomber raids, the Me 510 was primarily used as a Zerstörer against daylight bombers. Many aircraft received additional weapons, both directly incorporated at the factory but also as field accessories. Popular modifications included two extra 30mm guns (MK 108 or 103) in the bomb bay, or provisions for guided and unguided air to air missiles. A camera equipment package (Rüstsatz 'U3') allowed the fast aircraft to be used for daylight reconnaissance.

 

Many equipment packages from the earlier Me 410 could be fitted, too, including the massive 50mm BK 5 auto cannon against allied bomber groups. Initially, this package (‘U4’ Rüstsatz) comprised the original autocannon which fired at 45 RPM, with 21 shells in a drum magazine.

 

This weapon soon was replaced by the even more effective MK 214 B gun of 55mm caliber (Rüstsatz 'U5'). The BK 214 B fired at 180 RPM and proved to be a highly effective weapon at long ranges, outside of the bombers’ defensive armament range. As a drawback the heavy system (the gun plus the ammunition belt with 96 shells weighed 1.124 kg/2.475 lb) filled the whole internal bomb bay and precluded heavy external stores. Therefore, the 13mm machine guns in the nose were frequently removed in order to save weight, sometimes the weapons in the side barbettes, too. But: a single hit with one of the 1.54kg (3.4 lb) shells was enough to bring down a four-engined bomber, so that the fast Me 510 with this weapon became a serious threat in the course of late 1946.

 

 

510 general characteristics:

Crew: 2

Length: 42 ft (12,60 m)

Wingspan: 49 ft (14.69 m)

Height: 13 ft 1½ in (4.0 m)

Wing area: 480.11 ft² (44.78m²)

Empty weight: 10.665 lb (4.842 kg)

Loaded weight: 14.405 lb (6.540 kg)

Max. take-off weight: 18.678 lb (8.480 kg)

 

Maximum speed: 790 km/h (490 mph) at 7.200m (23.500 ft)

Range: 1.400 mi (2.300 km ) with full combat TOW

Service ceiling: 40.900 ft (12.500 m)

Rate of climb: 4.635 ft/min (23,6 m/s)

Wing loading: 29.8 lb/ft² (121.9 kg/m²)

Power/mass: 0.24 hp/lb (0.39 kW/kg)

 

Engine:

2× Heinkel-Hirth HeS 021 turboprop engines, 1.438 kW (2.500 hp) plus 980 kp (2.158 lb) residual thrust each

 

Armament: Varied, but typical basic equipment was:

2× 20 mm MG 151/20 cannons with 350 rpg, fixed in the nose

2× 13 mm (.51 in) MG 131 machine guns with 500 rpg in the nose flanks

2× 13 mm (.51 in) MG 131 machine guns with 500 rpg, each firing rearward from FDSL 131/1B remote-operated turret, one per side;

Up to 1.200 kg (2.643 lb) of disposable stores in- and externally

 

In the field, many modifications were made and several additional weapon packages with guns, guided and unguided missiles or special weapons were available (so-called ‘Rüstsätze’).

 

 

The kit and its assembly:

I am not certain when inspiration struck me for this fantasy aircraft - I guess it was when I tinkered together the Hü 324 whif, which was itself based on a 1:72 scale Il-28 bomber. When I browsed for a respective donation kit I also came across the 1:100 scale kit of the Soviet light bomber from Tamiya, and that stirred something: The Il-28's vintage contours would perfectly suit a Luft '46 aircraft, and with some calculations it was clear that the 1:100 wings would be suitable for something in the class of a 1:72 DH Mosquito or Bf 110. Then, the ill-fated Me 410 came to the scene as a potential late war basis aircraft, and from this starting point the idea of an evolutionary next step of the type, the Messerschmitt Me 510, was born.

 

Basically this model is a kitbashing of a Tamiya Il-28 in 1:100 (wings & engine nacelles) and the fuselage of a Matchbox Me 410. The IL-28's wings were turned upside down, so that the nacelles would now ride on the wings' top.

This not only looks cool and 'different', it's also plausible because the landing gear could retract into the wings under the nacelles (with the main landing gear doors closed, just like the original Me 410), it would also reduce the angle of the aircraft on the ground to a sensible degree - with the engines under the wings plus the landing gear would have been much to steep!

 

Fitting the wings to the fuselage was pretty easy, even though the original Me 410 wing profile was much thicker than the slender Il-28 wings. Cleaning and blending the wing root areas was a bit tricky, but the parts get together well.

 

As a design twist and for a uniform look I also replaced the whole tail section, matching the angular look of the thin new main wings. The horizontal stabilizers are wing tips from a Matchbox Me 262, the vertical fin is a modified outer wing part from a Matchbox Grumman Panther.

 

The engine nacelles were taken OOB. I just filled the Il-28's landing gear wells and their covers with putty, since they'd end on top of the new engines.

 

The propellers come from Matchbox P-51 Mustangs, outfitted with pointed spinners and held by a metal pin in a polystyrene tube which runs through the original intake splitter. Looks pretty martial, even though the nacelles ended up a bit close to the fuselage. The overall look reminds of the Short Sturgeon, but is not inplausible. A compact aircraft!

 

The cockpit received some side panels, news seats and some equipment, since the original Matchbox kit features almost nothing beyond a floor plate, two broad benches as seats and pilot figures. I also opened the cockpit hatches, since the aircraft would be built for ground display, with the landing gear extended.

 

From the original kit the BK 5 cannon installation was taken over, but I added a scratch-built, bigger muzzle brake. Since the aircraft was to become a high speed interceptor/Zerstörer for daylight operations, I did not add any further external ordnance.

 

 

Painting and markings:

I pondered about a potential livery for a long time. Almost any Me 410 was delivered in RLM 74/75/76 livery, and some at the Western front in France were operated in RLM 70/71/65, with a low waterline. But I found this pretty... boring. So I made up a fantasy livery which I found suitable for high altitude operations and based on my knowledge of late Luftwaffe paint scheme - pretty complex:

 

The aircraft was to be light in color, primarily camouflaged for aerial combat. I ended up with something that was planned as something that could have almost been called 'low-viz': all lower surfaces received a basic tone of RLM 76 (from Testors), with a raised waterline on all flanks. This light blue-grey would blend into a slightly darker FS 36320 on the higher flanks, almost up to the upper surfaces.

 

But in the end, the flanks received more spots than intended, and I ended up with a rather conservative livery - but it ain't bad at all. But so it goes...

 

The upper wing surfaces received a wavy scheme in RLM 71 (Drak Green) and 75 (Middel Grey). These are not typical late war colors, I rather used them due to the lighter shades. On the fuselage, just the fuselage crest was painted with more or less dense blotches of these tones, blending into more patches of RLM 02 on the flanks.

 

To add some more unconventional detail, the fuselage sides and undersides also received large, cloudy patches of RLM 77 - a very light grey. This detail was featured on some late-war He 177 bombers, but you can hardly tell these extra blotches because they have only little contrast to the RLM 76.

 

The tail fin was painted all white - a formation sign for a squadron leader, typical for German late WWII fighters. The black and white fuselage stripe is the ID of Jagdgeschwader 26 (which operated Fw 190D-9 from airfields in northern Germany, Flensburg was one of them), the red number abd the "+" code identify the machine as being part of the eighth Staffel.

 

In the end, a very subtle whif. The new engines are most obvious, and they change the look of the Me 410 dramatically. But only on second glance you recognize the other changes. The new wings/stabilizers with their square-shaped tips create a very slender and elegant look, the aircraft just looks fast and agile like a true heavy fighter should. Mission accomplished!

Done