Messerschmitt Me 410 Hornisse

Messerschmitt

Company type	Company
Industry	Aviation, Aerospace
Founded	1938
Headquarters	Augsburg , Germany
Products	Aircraft, including Messerschmitt Me 410

The Messerschmitt Me 410 Hornisse (translated as Hornet) was a heavy fighter and Schnellbomber (meaning "Fast Bomber") engineered and manufactured by the German aviation company Messerschmitt. It served with the Luftwaffe during the latter stages of the Second World War.

Development efforts to create a successor to the Bf 110 commenced in 1937. However, the outcome, the Me 210, failed to meet expectations, resulting in production being discontinued by April 1942. Several alternatives were evaluated, including the advanced Me 310 variant. Ultimately, authorities opted for a gradual enhancement approach represented by the Me 410. Although it bore a strong resemblance to its predecessor, the Me 210, and shared enough design elements to allow unfinished Me 210 airframes to be converted into Me 410s, significant distinctions existed. Notably, the Me 410 featured more powerful Daimler-Benz DB 603 engines, an extended fuselage, and incorporated automatic leading edge slats.

By late 1942, the Reichsluftfahrtministerium (RLM) endorsed mass production of the aircraft, with initial deliveries starting in January 1943. Multiple variants were developed, such as the Me 410A-1 light bomber, A-1/U1 reconnaissance version, A-1/U2 bomber destroyer, and A-2/U4 night fighter. Upon deployment, these aircraft were swiftly assigned to nocturnal bombing raids over the British Isles, where they often outpaced interception attempts by Royal Air Force (RAF) night fighters. The Me 410 also operated as a bomber destroyer targeting daytime bomber formations of the United States Army Air Forces (USAAF). While it achieved moderate success against unescorted bombers during 1943, it was outmatched in aerial combat against more agile Allied single-engine fighters like the North American P-51 Mustang and Supermarine Spitfire. Following the Normandy landings, Me 410s were among numerous Axis aircraft deployed against advancing Allied forces.

Starting mid-1944, all Me 410s were withdrawn from their role defending German airspace (Defence of the Reich) and production ceased in favor of heavily armed single-engine fighters such as the Fw 190 Sturmböcke serving as dedicated bomber interceptors. The final operational use of the Me 410 was focused on aerial reconnaissance missions. Only two examples of this aircraft have been preserved into the modern era.

Background

File:Me 210 and 410 Wing Planform Comparison.jpg

Side-by-side comparison illustrating the wing planforms of the Me 210 and Me 410

The development of the Me 410 is intrinsically linked to its predecessor, the Me 210. Initially conceptualized in 1937, this aircraft was intended as a versatile replacement for the Bf 110, which had demonstrated certain limitations even before entering combat. Early expectations for the Me 210 were optimistic, leading to an order of 1,000 units based solely on design proposals; however, the program encountered significant challenges. Flight trials revealed unsatisfactory longitudinal stability, and despite efforts to rectify these issues, performance remained below expectations. Production continued despite a high accident rate, ultimately resulting in the cessation of manufacturing on 14 April 1942. Authorities prioritized resolving the Me 210's deficiencies to resume production and mitigate financial losses.

Several design revisions were considered, including the Me 310, an innovative high-altitude variant featuring a pressurized cockpit and enhanced engines. This approach was not widely embraced by decision-makers, who preferred a more conservative upgrade path. Consequently, the Me 410 emerged, bearing a close visual resemblance to the Me 210.

Design

File:Messerschmitt Me-410 A-1-U2 (27699458750).jpg

The RAF Museum's Me 410 with open nose bomb-bay doors, photographed in 2016

File:Messerschmitt Me410A-1 U2 Hornisse (50108503016).jpg

The RAF Museum's Me 410 displayed without engines and outer wing sections, 2020

A key distinction between the Me 210 and Me 410 was the integration of larger 44.5 litres, 2,720 cu in displacement and more potent Daimler-Benz DB 603A engines. Each engine delivered 1,750 metric horsepower (1,730 hp; 1,290 kW), surpassing the 1,475 metric horsepower (1,455 hp; 1,085 kW) output of the DB 605 units installed on the Me 210C. This power increase raised the Me 410’s top speed to approximately 625 kilometres per hour (388 mph), while also enhancing its rate of climb, service ceiling, and cruising velocity, which reached 579 km/h (360 mph).Template:Fix/category

The upgraded powerplants also allowed for a heavier payload than could be accommodated within the nose bomb bay alone. To capitalize on this, four additional 50-kilogram (110 lb) bombs could be mounted on underwing hardpoints. Although these modifications added roughly 680 kg (1,500 lb) to the original Me 210 framework, the increased engine output more than compensated for the added weight. The rear gunner station retained its twin Ferngerichtete Drehringseitenlafette FDSL 131/1B turrets positioned on either side of the fuselage, each armed with a single 13 mm (.51 in) MG 131 machine gun. The firing mechanism preserved the pivoting handgun-style grip, trigger system, and gunsight identical to those employed on the Me 210.

Notable design enhancements included an extended fuselage and newly implemented automatic leading edge slats. These elements had been trialed on earlier Me 210 models and were found to significantly improve flight handling characteristics. Initially present on early Me 210 variants but removed from production versions due to poor handling issues, these slats would deploy during steep turns caused by elevated angle of attack, similar to their function during landing approaches. This phenomenon was first documented in prototypes Bf 109V14 and V15 for the Bf 109E, contributing to flight control difficulties. However, once lateral instability problems were addressed in subsequent designs, this issue was effectively mitigated.Template:Fix/category Although regarded as relatively stable compared to its predecessor, the Me 410 exhibited a slower turning rate than the Bf 110 it aimed to replace.

The wing configuration of the original Me 210 featured a planform that positioned the aerodynamic center further aft relative to that of the Bf 110. This resulted in outer wing sections beyond each engine nacelle having a leading edge sweepback angle of approximately 12.6°, contrasting with an inner panel sweepback angle near 6.0°. Such geometry contributed to undesirable flight handling traits in early Me 210s. In contrast, the revised outer wing panels on the Me 410 were redesigned to shift the aerodynamic center forward relative to its predecessor. Both inner and outer wing panels shared an identical leading edge sweepback angle of roughly 5.5°, which enhanced overall aircraft controllability.Template:Fix/category

Into flight

In late 1942, six Me 210A aircraft were withdrawn from production lines to be upgraded to the Me 410 configuration. Near the close of that year, the Me 410 V1 prototype completed its inaugural flight. Following this successful test, the Reichsluftfahrtministerium (RLM) was sufficiently impressed by its capabilities to authorize a substantial manufacturing contract for the Me 410.

Production of the Me 410 commenced in January 1943, arriving two years behind schedule, and continued until September 1944. By that time, Messerschmitt's Augsburg factory and Dornier's Munich plant had together produced a total of 1,160 units across all variants. Several models were developed to fulfill specific operational roles, including the Me 410A-1 light bomber, the A-1/U1 reconnaissance variant, the A-1/U2 bomber destroyer, and the A-2/U4 night fighter. Although crews generally valued the Me 410 upon its deployment, its enhanced performance was insufficient to shield it from the frequent encounters with advanced Allied fighters during this period of the war.

Operational history

File:Me 410 Hornisse with BK 5.jpg

An Me 410A-1/U4 equipped with a BK 5 cannon maneuvers away after engaging USAAF B-17 bombers

File:Me 410A-1 U2.jpg

Messerschmitt Me 410A-1/U2 (W. Nr. 420428, 9K+AM) piloted by Obfw. Hermann Bolten of 4./KG 51, shot down on June 6th, 1944

When conducting night bombing operations over the British Isles, the Me 410A-1 demonstrated considerable evasiveness against Royal Air Force (RAF) night fighters. The first unit to deploy over Britain was V./KG 2; it suffered its initial Me 410 loss on the night of July 13–14, 1943, when a de Havilland Mosquito from No. 85 Squadron RAF downed one aircraft. Despite such setbacks, the Me 410 played a significant role in bombing raids on London during early 1944.

The Me 410 also functioned as a bomber destroyer targeting daytime formations of United States Army Air Forces (USAAF) bombers. It was outfitted with Umrüst-Bausätze factory conversion kits denoted by a /U suffix in their designations—these suffixes varied in meaning depending on the variant. For instance, the earlier Me 410 A-1/U1 indicated installation of reconnaissance cameras in the under-nose ordnance bay (similar to the A-3’s original purpose), whereas the B-2/U1 variant mounted two long-barreled, 30 mm MK 103 cannon in that same bay. The /U2 designation referred to fitting two additional 20 mm MG 151/20 cannons beneath the nose. The A-1/U4 model carried the formidable Bordkanone series BK 5—a massive 50 mm (2-inch) cannon weighing approximately 540-kilogram (1,190 lb)—with twenty-one rounds housed in place of cameras or smaller cannons. To disrupt bomber formations further, many Me 410s were equipped with four underwing tubular launchers (two per wing panel) firing modified 21 cm (8-inch) Werfer-Granate infantry barrage rockets. By late 1943, two Geschwader—Zerstörergeschwader 26 and Zerstörergeschwader 76—had adopted the Me 410 for their operations.

Throughout 1943, the type achieved moderate success against unescorted bomber formations, securing numerous kills against USAAF daylight raids. Nonetheless, in close combat with more agile single-engine Allied fighters like the North American P-51 Mustang and Supermarine Spitfire, the Me 410 was outmatched. Beginning in early 1944, Allied fighter escorts frequently flew far ahead of their bomber formations as part of air superiority tactics aimed at clearing Luftwaffe opposition before bombers arrived. This shift often negated prior successes by Me 410 units against escorted bombers due to increased losses. For example, during a large-scale USAAF raid on Berlin on March 6, 1944—just two days after launching a new campaign—sixteen Me 410s were lost while only eight B-17 Flying Fortresses and four P-51s were destroyed; these P-51s were downed by Bf 109 and Fw 190 fighters accompanying the Me 410s. On April 11 during raids on Sorau, Rostock, and Oschersleben by the Eighth Air Force, II./ZG 26’s Me 410s initially achieved notable success by shooting down ten B-17s without losses; however, their subsequent sortie was intercepted by P-51s resulting in eight Me 410s and three Bf 110s being shot down with sixteen crew fatalities and three wounded.

April 1944 saw delivery of the first Me 410B models. Units frequently transitioned to these from bomber types such as the Junkers Ju 88. In response to the Normandy landings, Me 410s were repeatedly deployed against advancing Allied forces.

By mid-1944, despite being Adolf Hitler’s preferred bomber destroyer aircraft, Me 410 units were withdrawn from Defense of the Reich missions. Production ceased in favor of heavily armed single-engine fighters like the Fw 190 Sturmböcke serving as dedicated bomber destroyers. Remaining Me 410s continued operations primarily in reconnaissance roles only.

Variants

The A-series models of the aircraft were equipped with two 7.92 mm (.312 in) MG 17 machine guns alongside a pair of 20 mm MG 151/20 cannons mounted in the nose, and were primarily delivered as the Me 410 A-1 light bomber. Plans for the Me 410 A-2 heavy fighter were abandoned because the dual 30 mm (1.18 in) MK 103 cannon assembly, which was also intended for the later Me 410 B-2 variant as the Umrüst-Bausatz /U1 factory conversion kit available by 1944, was not completed on schedule.

The Me 410 A incorporated a bomb bay designed to carry ordnance, yet this space could be adapted for other equipment through conversion kits. Initially, three Umrüst-Bausätze (factory conversion packages) were offered: the U1 kit outfitted the aircraft with cameras for photo-reconnaissance missions; the U2 kit installed two 20 mm MG 151/20 cannons with an ammunition capacity of 250 rounds per gun for enhanced fighter capabilities; and the U4 kit featured a 50 mm (2 in) Bordkanone, specifically the BK-5 cannon, loaded with 22 rounds (21 in reserve plus one in the breech). These kits aimed to transform either Me 410 A or B series planes into effective bomber destroyers.

The BK-5 cannon, derived from the 50 mm (2 in) KwK 39 L/60 tank gun used on the Panzer III, enabled Me 410s to engage targets from distances exceeding 914 m (1,000 yd), well beyond the effective range of defensive machine guns on bombers. Nevertheless, operational experience revealed frequent jamming issues, limited ammunition capacity, and the added weight of approximately 540-kilogram (1,190 lb) beneath the nose reduced its practicality. Consequently, other anti-bomber configurations of the Me 410, especially those equipped with additional 20 mm MG 151/20 cannons, proved more effective.

The reconnaissance-focused Me 410 A-3 variant featured a lengthened fuselage that accommodated extra cameras and increased fuel storage. This model entered limited service in early 1944 and equipped three long-range reconnaissance Aufklärungsstaffel squadrons, which were typically organized into larger formations of three or four squadrons known as Fernaufklärungsgruppen—with one Gruppe operating on the Western Front and two others deployed on the Eastern Front.

The Me 410 B series shared many characteristics with the A-series but replaced the twin 7.92 mm (.312 in) MG 17 machine guns with more powerful 13 mm (.51 in) MG 131 machine guns. The initially planned DB 603G engine producing 1,900 hp (1,400 kW) was cancelled early in 1944; thus, all Me 410 Bs utilized either DB 603A or DB 603AA engines. Had it been implemented, the DB 603G would have raised maximum speed to approximately 630 kilometres per hour (390 mph) and cruising speed to around 595 kilometres per hour (370 mph), albeit with increased weight. The B-series variants mirrored those of the A-series: the Me 410 B-1 and Me 410 B-3 fulfilled roles equivalent to their A-1 and A-3 counterparts and could also employ identical Umrüst-Bausätze factory conversion kits.

Several experimental versions were also developed. The Me 410 B-5 was modified to carry a torpedo beneath its fuselage by adding specialized shackles while removing its nose-mounted MG 131s to accommodate the FuG 200 Hohentwiel maritime patrol radar operating at a UHF-band frequency of 550 MHz. To make space for a 650-litre (170 US gal) fuel tank, this variant did not utilize its bomb bay. Additionally, rearward-firing remote-controlled turrets were replaced by another 700-litre (180 US gal) fuel tank to extend operational range. The Me 410 B-6 was a related anti-shipping adaptation intended solely for short-range coastal defense missions; unlike the B-5, it did not carry a torpedo but instead was a straightforward modification of the B-1 model fitted with FuG 200 radar. The reconnaissance-oriented Me 410 B-7/B-8 updates to the B-3 variant were planned but never realized.

The Me 410 C was conceptualized in early 1944 as a high-altitude variant featuring two alternative wing designs that expanded wingspan to either 18.25 metres (59.9 ft) or 20.45 metres (67.1 ft) (approximately). The enlarged wings allowed landing gear to retract rearwards directly. This version included a new universal engine mount compatible with various powerplants such as turbocharged Daimler-Benz DB 603JZ, BMW 801J radial engines, or two-stage mechanically supercharged Junkers Jumo 213E engines. These engines would drive newly designed four-blade propellers with broad blades. Cooling systems varied: air-cooled BMW radials contrasted with DB and Jumo engines using annular radiators integrated into modular Kraftei ("power egg") engine units for ease of installation and maintenance; consequently, traditional under-wing radiators were removed. Despite these plans, no Me 410 C units were produced due to production cancellation before engine development reached maturity.

Designed as a more straightforward altitude enhancement compared to the C-series, the Me 410 D upgraded from the B-series by incorporating DB 603JZ engines and featured a redesigned forward fuselage that improved pilot visibility while reducing aerodynamic drag. To conserve critical materials, sections of outer wing panels were replaced with wooden components. Although some units were manufactured, widespread issues arose from adhesive failures caused by corrosive substitutes following destruction of the Goldschmitt Tego film factory in Wuppertal during an RAF night bombing raid. These problems led to structural weaknesses in wooden parts. Ultimately, production ceased in August 1944 after approximately 1,160 Me 410s had been built; this decision coincided with shifting priorities toward producing Bf 109G fighters under the Jägernotprogramm.

Operators

Template:Country data Nazi Germany

• The Luftwaffe served as the main user of the Me 410, operating it from 1943 through 1945.
  • Stabsschwarm & 2.(F)/Aufklärungsgruppe 22
  • 1.(F)/Aufklärungsgruppe 33
  • 1.(F)/FAGr.121
  • 1.,2(Ekdo).,5.(F)/Aufklärungsgruppe 122 (later renamed FAGr 122)
  • Seenotgruppe 80 (specializing in maritime reconnaissance and rescue)
  • 9.,20./ZG 1 'Wespen'
  • 2.,4.,6.,Stab/ZG 26 'Horst Wessel'
  • 1.,2.,3./ZG 76
  • Eprobungskommando/(Z)25
  • 5.(nacht),14.(nacht),15.,16./KG 2 (night intruder missions)
  • 1.(Jagd),2.(nacht),5.(Erg/jagd),6./KG 51 'Edelweiss' (long-range night operations)
  • 1./NJG 5 (tasked with Mosquito interception)
  • 3./NJG 1 (Mosquito interception unit)

Template:UK

• The Royal Air Force acquired a minimum of two captured Me 410 aircraft during and immediately after the conflict.
  • No. 1426 Flight RAF operated one Me 410 A-3 (WNr.10259, RAF serial TF209) throughout the war.

Surviving aircraft

File:Me 410.jpg

Me 410, W.Nr.10018, (FE499) after shipment to the United States

Currently, two Me 410s remain preserved:

Me 410 A-1/U1 (W.Nr.10018, converted from a Me 210 airframe)

This example is held by the American National Air and Space Museum, pending restoration at the Paul E. Garber Preservation, Restoration, and Storage Facility in Suitland, Maryland. It was discovered intact at an airfield near Trapani, Sicily in August 1943 bearing Luftwaffe markings of the 2.Staffel/Fernaufklärungsgruppe 122 and was transported to the United States in 1944. It carries the US serial number FE499.

File:Messerschmitt Me 410 (3444884769).jpg

Me 410, W.Nr.420430, RAF Museum Cosford (2009)

Me 410 A-1/U2 (W.Nr.420430)

This aircraft is exhibited at the Royal Air Force Museum Midlands, Cosford as part of their collection. Manufactured by Messerschmitt in Augsburg towards the end of 1943, records indicate it likely served with Zerstörergeschwader 26 before surrendering at Vaerlose, Denmark in May 1945. It was among six Me 410s brought to the UK for evaluation post-war but was the sole example preserved from scrapping. Restoration was completed in 1986, including successful ground runs of both engines. The aircraft has been on display at Cosford since its relocation there in 1989.

External links

• German World War II manual detailing the Me 410A-1/U-4's Bordkanone BK 5 cannon setup
• Me 410 exhibit at the Royal Air Force Museum in Cosford
• United States Intelligence Report on the Me 410 hosted at LoneSentry.com