Messerschmitt Me 323
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| Me 323 "Gigant" | |
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| Type | Heavy transport |
| Manufacturer | Messerschmitt A.G. |
| Maiden flight | Late 1941 |
| Introduced | 1943 |
| Retired | 1944 |
| Primary user | Luftwaffe |
| Produced | 1941-1944 |
| Number built | ca. 200 |
| Variants | Messerschmitt Me 321 |
The Messerschmitt Me 323 "Gigant" was a German transport aircraft of World War II. It was a powered variant of the Me 321 glider and was the largest land-based transport aircraft of the war. A total of 213 are recorded as having been made, a few being converted from the Me 321.
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[edit] Development
[edit] Me 321
The genesis of the Me 323 Gigant (giant) transport was in a 1940 German requirement for a large assault glider in preparation for Operation Sealion, the projected invasion of Great Britain. The DFS 230 light glider had already proven its worth in the famous attack on Fort Eben-Emael in Belgium (the first ever assault by gliderborne troops), and would later be used successfully in the Crete invasion in 1941. However, the prospect of mounting an invasion across the English Channel focused minds on the need to be able to airlift vehicles and other heavy equipment as part of an initial assault wave. Although Operation Sealion was cancelled, the requirement for a heavy air transport capability still existed, with the focus now on the forthcoming Operation Barbarossa, the invasion of the USSR.
On 18 October 1940, Junkers and Messerschmitt were given just 14 days to submit a proposal for a large transport glider. The emphasis was still very much on the assault role: the ambitious requirement was to be able to carry either an 88mm gun and its half-track tractor, or a PzKpfw IV medium tank. The Junkers Ju 322 'Mammut' reached prototype form, but was completely unsatisfactory due to its all-wood construction and was scrapped. The Messerschmitt was originally designated the Me 261w, was then changed to Me 263, and eventually became the Me 321. Although the Me 321 saw considerable service in Russia, it was never used for a Maltese invasion, or for any other such aerial assaults.
[edit] Me 323
Early in 1941, as a result of feedback from Transport Command pilots in Russia, the decision was taken to produce a motorized variant of the Me 321, to be designated Me 323. It was decided to use French Gnome GR14N radial engines rated at 990 hp as used in the Bloche MB.175 aircraft; using French engines would place no burden on Germany's overstrained industry.[1]
Initial tests were conducted using four Gnome engines attached to a strengthened Me 321 wing, which gave a modest speed of 210 kilometres per hour (130 mph) - 80 kilometres per hour (50 mph) slower than the Junkers Ju 52 transport aircraft. A fixed undercarriage was fitted, which comprised four small wheels in a bogie at the front of the aircraft with six larger wheels in two lines of three at each side of the fuselage, partly covered by an aerodynamic fairing. The rear wheels were fitted with pneumatic brakes, and could stop the aircraft within 200 metres (660 ft).
The four-engined Me 323C was considered merely a stepping stone to the six-engined D series; it still required the 5-engined Heinkel He 111Z Zwilling or the highly dangerous Troikaschlepp formation of three Messerschmitt Bf 110 heavy fighters to takeoff when full laden, but could return to base under its own power when empty. This was clearly not much better than the Me 321, so the V2 prototype became the first to have 6 engines and flew for the first time in early 1942, becoming the prototype for the D series aircraft. The 6 engines were fitted to reduce torque - a trio of clockwise rotation engines mounted on the port wing, and a trio of counterclockwise rotation engines on the starboard wing.
[edit] Design
As per the Me 321, the Me 323 had massive, semi-cantilever, high-mounted wings which were braced from the fuselage out to the middle of the wing. To reduce weight and to save on aluminum much of the wing was made of plywood and fabric, while the fuselage was of metal tube construction with wooden spars and covered with doped fabric, with heavy bracing in the floor to support the payload.
The 'D' series had a crew of 5: two pilots, two flight engineers and a radio operator. Two additional gunners could also be carried. The flight engineers occupied two small cabins, one in each wing between the inboard and center engines. The engineers were intended to monitor engine synchronisation and allow the pilot to fly without worrying about engine status, although the pilot could override the engineers' decisions on engine and propeller control.
Compared to the Me 321, the Me 323 had a much-reduced payload of between 10–12 tonnes, which was the price that had to be paid for an aircraft that could operate autonomously. Even with the engines, the rocket assisted takeoff units used on the Me 321 were still frequently required, being mounted beneath the wings outboard of the engines. The cargo hold was 36 feet long, 10 feet wide and 11 feet high. The typical loads it carried were: two four-ton trucks, or 8,700 loaves of bread, or an 88 mm Flak gun, its equipment, ammunition and crew, or 52 drums of fuel (45 gal/252 L), or 130 men, or 60 stretchers.
Some Me-321s were converted to Me-323s, but the majority were built as six-engined aircraft from the beginning; early models were fitted with wooden two-blade propellers which later was replaced by variable-pitch metal three-blade versions.
The Me 323 had a maximum speed of only 136 miles per hour (219 km/h) at sea level and speed dropped with altitude. For defensive armament, it was armed with five 13 mm machine guns firing from a dorsal position behind the wings and from the fuselage. They were manned by the extra gunners, radio operator and engineers. [2]
[edit] Operational history
By September 1942 Me 323s were being delivered for use in the Tunisian campaign, and entered service in the Mediterranean theater in November 1942. The high rate of loss among Axis shipping had made necessary a huge airlift of equipment across the Mediterranean to keep Rommel's army supplied.
On April 22 1943 a formation of 27 fully laden Me 323s being escorted across the Sicilian Straits by Bf 109s from JG 27 was intercepted by seven squadrons of Spitfires and P-40s, with the loss of 21 Me 323s.[3] Three of the P-40s were shot down by the escorts.[4]
In terms of aircraft design, the Me 323 was actually very resilient, and could absorb a huge amount of enemy fire, unless loaded with barrels with fuel – the Afrika Korps' nicknames of Leukoplastbomber ("Elastoplast bomber") or even more derisively as the "adhesive tape bomber," were somewhat unfair. The Me 323 was something of a "sitting duck," being so slow and large an aircraft. However, no transport aircraft can ever be expected to survive without air superiority or at least, comprehensive local air cover, and it is believed that no Me 323s survived in service beyond summer 1944.
A total of 213 Me 323s were built before production ceased in April 1944. There were several production versions, beginning with the D-1. Later D- and E- versions differed in the choice of power plant and in defensive armament, with improvements in structural strength, total cargo load and fuel capacity also being implemented. Nonetheless, the Me 323 remained significantly underpowered. There was a proposal to install six BMW 801 radials, but this never came to pass. The Me 323 was also a short-range aircraft, with a typical range (loaded) of 1,000–1,200 km. Despite this, the limited numbers of Me 323s in service were an invaluable asset to the Germans, and saw intensive use.
[edit] Survivors
No complete aircraft survives, but the Luftwaffenmuseum der Bundeswehr at Berlin-Gatow has a Me 323 main wing spar in its collection.
[edit] Variants
- Me 323V1
- Prototype, powered by four Gnome-Rhône 14N engines
- Me 323V2
- Prototype, powered by six Gnome-Rhône 14N engines, became the standard for D production series
- Me 323D-1
- First production series, powered by six Gnome-Rhône 14N engines, two 7.92-mm MG 15 machine guns in cockpit fittings provided, field modifications increased defensive armament
- Me 323E-1
- Second production series, turrets incorporated in the wings
- Me 323E-2
- Third production series
- Me 323E-2WT
- Third production series, incorporating a front turret
- Me 323V16
- Prototype, powered by six Jumo 211 Rs, intended to serve as a master for the Me 323F production series
- Me 323V17
- Prototype (unfinished), powered by six 1,320 hp Gnome-Rhône GR14R engines, intended to serve as a master for the Me 323G
[edit] Specifications (Me 323)
General characteristics
- Crew: 5
- Capacity: 130 troops or 10–12 tonnes equipment
- Length: 28.2 m (92 ft 4 in)
- Wingspan: 55.2 m (181 ft 0 in)
- Height: 10.15 m (33 ft 3.5 in)
- Empty weight: 27,330 kg (60,260 lb)
- Loaded weight: 29,500 kg (65,000 lb)
- Max takeoff weight: 43,000 kg (94,815 lb)
- Powerplant: 6× Gnome-Rhône 14N, 700 kW (950 hp) each
Performance
- Maximum speed: 270 km/h (170 mph)
- Range: 800 km (500 miles)
- Service ceiling 4,000 m (13,100 ft)
- Rate of climb: 216 m/min (710 ft/min)
- Ferry range: 1,100 km (684 miles)
Armament
- 18 × 7.92 mm MG 81 machine guns
[edit] Notes
- ^ Hyland, Gary (1999). Last Talons of the Eagle. Headline, p. 78. ISBN 074725964X.
- ^ U.S. World War II Report on Me 323
- ^ Staerck, Christopher (2002). Luftwaffe: The Allied Intelligence Files. Brassey's, pp. 202-203. ISBN 1574883879.
- ^ Weal 2003, p. 92.
[edit] References
- Mondey, David. The Concise Guide to Axis Aircraft of World War II. New York: Bounty Books, 1996. ISBN 1-85152-966-7.
- Weal, John (2003). Jagdgeschwader 27 'Afrika'. Oxford: Osprey. ISBN 1-841765-38-4.
[edit] External links
- U.S. intelligence report on the German Me-323 "Gigant" transport aircraft appeared in Tactical and Technical Trends, No. 21, 25 March 1943
- Me 323
- Messerschmitt Me 323
[edit] See also
Related development
Comparable aircraft
Related lists
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