1:72 Gotha Go 146 A-0 (license-built Ki-46II 'Dinah'), aircraft '5F+EL' of 3(f.)/14. Aufklärungsgruppe, Deutsche Luftwaffe; Froid-Chapelle (France), summer 1940 (Whif/Airfix kit conversion)
+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
Some background:
The Gotha 146 was a fast reconnaissance aircraft that was used throughout WWII by the German Luftwaffe, and one of the results of a mutual technology exchange program with Japan.
The Go 146 was actually a license-built, modified variant of the excellent Mitsubishi Ki-46. The latter type's career started in late 1937: the Imperial Japanese Army Air Force issued a specification to Mitsubishi for a long-range strategic reconnaissance aircraft to replace the Mitsubishi Ki-15.
The specification demanded an endurance of six hours and sufficient speed to evade interception by any fighter in existence or development, but otherwise did not constrain the design by a team led by Tomio Kubo.
The resulting design was a twin-engined, low-winged monoplane with a retractable tailwheel undercarriage. It had a small diameter oval fuselage with the pilot and observer situated in individual cockpits separated by a large fuel tank. The engines, two Mitsubishi Ha-26 radials, were housed in close fitting cowlings to reduce drag and improve pilot view.
The first prototype aircraft, flew in November 1939 from the Mitsubishi factory at Kakamigahara, Gifu.Tests showed that the Ki-46 was underpowered, and slower than required, only reaching 540 km/h (336 mph) rather than the specified 600 km/h (373 mph). Otherwise, the aircraft tests were successful. As the type was still faster than the Army's latest fighter, the Nakajima Ki-43, as well as the Navy's new A6M2,an initial production batch was ordered.
To solve the performance problems, Mitsubishi fitted Ha-102 engines, which were Ha-26s fitted with a two-stage supercharger, while increasing fuel capacity and reducing empty weight to give the Ki-46-II. This machine was also demonstrated to German officials, who became immediately aware of its potential.
Knowing that the German Luftwaffe lacked this fast type of aircraft (German reconnaissance aircraft of that time were either slow artillery observation types, or variants of bombers or heavy fighters), the RLM immediately asked for a batch of airframe kits in order to adapt it to the European theatre and test its capabilities.
The result was a delivery of seven engine-less airframe kits that arrived in Germany in early 1940. In the meantime, with the help of blueprints and other documentations, an alternative engine installation had been devised - the German aircraft was to be powered by liquid-cooled DB 601 engines, which delivered more power than the Ha-102 and offered improved aerodynamics, despite the necessity to add radiators under the outer wings.Effectively, many stock parts from the Messerschmitt Bf 110 heavy fighter were incorporated, so that development time was very short.
In May 1940 the first batch of the Gotha 146 (which had officially been described as a further development of a four seat, twin-engine transport aircraft from the 1930s) was ready, and they were immediately transferred to the Western Front and based in France.
Allocated to the 14. Aufklärungsgruppe, the Go 146 A-0 machines carried out various reconnaissance tasks over the North Sea, Great Britain and France, and they were also used for camouflage trials: each of the five aircraft sported a different paint scheme, raging from uniform, all-over grey to disruptive geometrical patterns, reminiscent of Dazzle camouflage!
The Go 146 was popular among its crews, since it was fast, agile and easy to fly. During the test phase in summer 1940 the Go 146 proved to be slightly faster than its Japanese Ki-46 ancestor, and with a top speed of more than 375 mph (600 km/h) it was hard to intercept by any British or French fighter. The results were so convincing that serial production was ordered, and from October 1940 on the Go 146 A-1 was produced in limited numbers, and the type was steadily developed further, including the change of the nose section that came withe the Ki-46III and augmented engines.
Specifications:
Crew: two (pilot and observer)
Length: 11.00 m (36 ft 1 in)
Wingspan: 14.70 m (48 ft 2¾ in)
Height: 3.88 m (12 ft 8¾ in)
Wing area: 32.0 m² (344 ft²)
Empty weight: 3,263 kg (7,194 lb)
Loaded weight: 5,050 kg (11,133 lb)
Max. takeoff weight: 5,800 kg (12,787 lb)
Powerplant:
2× Daimler-Benz DB 601B-1 liquid-cooled inverted V-12, 809 kW (1,100 hp) each
Performance:
Maximum speed: 625 km/h (345 knots, 388 mph) at 5,800 m (19,000 ft)
Cruise speed: 400 km/h (217 knots, 249 mph)
Range: 2,474 km (1,337 nmi, 1,537 mi)
Service ceiling: 10,720 m (35,200 ft)
Wing loading: 157.8 kg/m² (32.3 lb/ft²)
Climb to 8,000 m (26,250 ft): 17 min 58 sec
Armament:
1x 7.92 mm (.312 in) MG 17 machine gun in the observer's cabin, facing rearwards
The kit and its assembly:
This sounds like a weird idea, but the Luftwaffe had seriously been interested in the Ki-46, even though no aircraft ever made it to Europe. On the other side, several German aircraft were delivered to Japan (including the Bf 109E, Ju 87 and Me 210) for trials, so reversing this procedure makes sense.
Anyway, a German version would certainly not have been powered by radials, since this type of engine was not very popular in Europe and rather seen as a "slow" option for bombers. So the idea was born to convert a stock Ki-46 II into a prototype with German liquid-cooled engines - and it was easier to realize than expected!
The basis is the Airfix Dinah, a vintage and very simple kit. Fit is basically good, but the clear parts were (in my case) somewhat damaged around the edges of both canopies. Engines and landing gear are also basic - so I used different wheels, and the radials were replaced, anyway.
I used DB 601 engines, taken from an Airfix Bf 110 C kit, which also donated the radiators.
The latter were easy to place outside or the engine nacelles, the engines took some effort. The DB 601's height is perfect for the nacelles, just the width had to be enlarged in order to fit the original, circular shape of the radials' attachment points.
The remedy was simple: two long cuts in the upper cowling made the new engines flexible and wide enough to press them onto the nacelles' front ends! Some putty was necessary to hide gaps and smooth out the intersection, but the result looks very natural!
Otherwise not much was changed. The cockpits and the pilots were taken OOB, I just added a typical ring antenna under the fuselage and an additional pitot under the nose.
Painting and markings:
The fun part, even though it took a while to find something... different. The typical RLM 70/71/65 splinter scheme with a low waterline for prototypes or bombers of the BoB era was a valid option, but soooo boring.
While looking for inspiration I stumbled across some experimental schemes that had been tested on Bf109E fighters from JG53 - and that's what I finally settled upon.
What the Go 146 now carries is effectively a mix of two schemes: the stylish, geometric pattern was taken from one Bf 109, the colors (RLM 61/02/71/65) from another. Everything was painted with brushes and without masks, some light panel shading, black ink and grinded graphite were used for weathering.
The markings are minimal, typical for German reconnaissance aircraft of the time and based upon Bf 110 of the 14. Aufklärungsgruppe, the decals come from various aftermarket sheets and the code was puzzled together from single letter decals (TL Modellbau). A coat of acrylic matt varnish finally sealed the kit.
An exotic whif, and despite the weird basic idea I made it even more spectacular through the strange paint scheme which reminds of similar experiments by the US Navy. Odd thing is that I had the idea for a German Ki-46 on the agenda for quite a while, but this was/is to become a beefed-up Ki-46III for the late WWII period.
Building this kit's ancestor now, even before the Ki-46III conversion even started, is a little odd - but confirms the feasibility of an engine change and adds another contribution to the 2015 "Battle of Britain" Group Build at whatifmodelers.com.
1:72 Gotha Go 146 A-0 (license-built Ki-46II 'Dinah'), aircraft '5F+EL' of 3(f.)/14. Aufklärungsgruppe, Deutsche Luftwaffe; Froid-Chapelle (France), summer 1940 (Whif/Airfix kit conversion)
+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
Some background:
The Gotha 146 was a fast reconnaissance aircraft that was used throughout WWII by the German Luftwaffe, and one of the results of a mutual technology exchange program with Japan.
The Go 146 was actually a license-built, modified variant of the excellent Mitsubishi Ki-46. The latter type's career started in late 1937: the Imperial Japanese Army Air Force issued a specification to Mitsubishi for a long-range strategic reconnaissance aircraft to replace the Mitsubishi Ki-15.
The specification demanded an endurance of six hours and sufficient speed to evade interception by any fighter in existence or development, but otherwise did not constrain the design by a team led by Tomio Kubo.
The resulting design was a twin-engined, low-winged monoplane with a retractable tailwheel undercarriage. It had a small diameter oval fuselage with the pilot and observer situated in individual cockpits separated by a large fuel tank. The engines, two Mitsubishi Ha-26 radials, were housed in close fitting cowlings to reduce drag and improve pilot view.
The first prototype aircraft, flew in November 1939 from the Mitsubishi factory at Kakamigahara, Gifu.Tests showed that the Ki-46 was underpowered, and slower than required, only reaching 540 km/h (336 mph) rather than the specified 600 km/h (373 mph). Otherwise, the aircraft tests were successful. As the type was still faster than the Army's latest fighter, the Nakajima Ki-43, as well as the Navy's new A6M2,an initial production batch was ordered.
To solve the performance problems, Mitsubishi fitted Ha-102 engines, which were Ha-26s fitted with a two-stage supercharger, while increasing fuel capacity and reducing empty weight to give the Ki-46-II. This machine was also demonstrated to German officials, who became immediately aware of its potential.
Knowing that the German Luftwaffe lacked this fast type of aircraft (German reconnaissance aircraft of that time were either slow artillery observation types, or variants of bombers or heavy fighters), the RLM immediately asked for a batch of airframe kits in order to adapt it to the European theatre and test its capabilities.
The result was a delivery of seven engine-less airframe kits that arrived in Germany in early 1940. In the meantime, with the help of blueprints and other documentations, an alternative engine installation had been devised - the German aircraft was to be powered by liquid-cooled DB 601 engines, which delivered more power than the Ha-102 and offered improved aerodynamics, despite the necessity to add radiators under the outer wings.Effectively, many stock parts from the Messerschmitt Bf 110 heavy fighter were incorporated, so that development time was very short.
In May 1940 the first batch of the Gotha 146 (which had officially been described as a further development of a four seat, twin-engine transport aircraft from the 1930s) was ready, and they were immediately transferred to the Western Front and based in France.
Allocated to the 14. Aufklärungsgruppe, the Go 146 A-0 machines carried out various reconnaissance tasks over the North Sea, Great Britain and France, and they were also used for camouflage trials: each of the five aircraft sported a different paint scheme, raging from uniform, all-over grey to disruptive geometrical patterns, reminiscent of Dazzle camouflage!
The Go 146 was popular among its crews, since it was fast, agile and easy to fly. During the test phase in summer 1940 the Go 146 proved to be slightly faster than its Japanese Ki-46 ancestor, and with a top speed of more than 375 mph (600 km/h) it was hard to intercept by any British or French fighter. The results were so convincing that serial production was ordered, and from October 1940 on the Go 146 A-1 was produced in limited numbers, and the type was steadily developed further, including the change of the nose section that came withe the Ki-46III and augmented engines.
Specifications:
Crew: two (pilot and observer)
Length: 11.00 m (36 ft 1 in)
Wingspan: 14.70 m (48 ft 2¾ in)
Height: 3.88 m (12 ft 8¾ in)
Wing area: 32.0 m² (344 ft²)
Empty weight: 3,263 kg (7,194 lb)
Loaded weight: 5,050 kg (11,133 lb)
Max. takeoff weight: 5,800 kg (12,787 lb)
Powerplant:
2× Daimler-Benz DB 601B-1 liquid-cooled inverted V-12, 809 kW (1,100 hp) each
Performance:
Maximum speed: 625 km/h (345 knots, 388 mph) at 5,800 m (19,000 ft)
Cruise speed: 400 km/h (217 knots, 249 mph)
Range: 2,474 km (1,337 nmi, 1,537 mi)
Service ceiling: 10,720 m (35,200 ft)
Wing loading: 157.8 kg/m² (32.3 lb/ft²)
Climb to 8,000 m (26,250 ft): 17 min 58 sec
Armament:
1x 7.92 mm (.312 in) MG 17 machine gun in the observer's cabin, facing rearwards
The kit and its assembly:
This sounds like a weird idea, but the Luftwaffe had seriously been interested in the Ki-46, even though no aircraft ever made it to Europe. On the other side, several German aircraft were delivered to Japan (including the Bf 109E, Ju 87 and Me 210) for trials, so reversing this procedure makes sense.
Anyway, a German version would certainly not have been powered by radials, since this type of engine was not very popular in Europe and rather seen as a "slow" option for bombers. So the idea was born to convert a stock Ki-46 II into a prototype with German liquid-cooled engines - and it was easier to realize than expected!
The basis is the Airfix Dinah, a vintage and very simple kit. Fit is basically good, but the clear parts were (in my case) somewhat damaged around the edges of both canopies. Engines and landing gear are also basic - so I used different wheels, and the radials were replaced, anyway.
I used DB 601 engines, taken from an Airfix Bf 110 C kit, which also donated the radiators.
The latter were easy to place outside or the engine nacelles, the engines took some effort. The DB 601's height is perfect for the nacelles, just the width had to be enlarged in order to fit the original, circular shape of the radials' attachment points.
The remedy was simple: two long cuts in the upper cowling made the new engines flexible and wide enough to press them onto the nacelles' front ends! Some putty was necessary to hide gaps and smooth out the intersection, but the result looks very natural!
Otherwise not much was changed. The cockpits and the pilots were taken OOB, I just added a typical ring antenna under the fuselage and an additional pitot under the nose.
Painting and markings:
The fun part, even though it took a while to find something... different. The typical RLM 70/71/65 splinter scheme with a low waterline for prototypes or bombers of the BoB era was a valid option, but soooo boring.
While looking for inspiration I stumbled across some experimental schemes that had been tested on Bf109E fighters from JG53 - and that's what I finally settled upon.
What the Go 146 now carries is effectively a mix of two schemes: the stylish, geometric pattern was taken from one Bf 109, the colors (RLM 61/02/71/65) from another. Everything was painted with brushes and without masks, some light panel shading, black ink and grinded graphite were used for weathering.
The markings are minimal, typical for German reconnaissance aircraft of the time and based upon Bf 110 of the 14. Aufklärungsgruppe, the decals come from various aftermarket sheets and the code was puzzled together from single letter decals (TL Modellbau). A coat of acrylic matt varnish finally sealed the kit.
An exotic whif, and despite the weird basic idea I made it even more spectacular through the strange paint scheme which reminds of similar experiments by the US Navy. Odd thing is that I had the idea for a German Ki-46 on the agenda for quite a while, but this was/is to become a beefed-up Ki-46III for the late WWII period.
Building this kit's ancestor now, even before the Ki-46III conversion even started, is a little odd - but confirms the feasibility of an engine change and adds another contribution to the 2015 "Battle of Britain" Group Build at whatifmodelers.com.