Dewoitine D.520

Přehled verzí
Many D. 520 - summary version


Label the Design of the aeroplane - a description
Many D. 520.01 the first prototype, the engine Hispano-Suiza 12Y-21, without armament
Many D. 520.02 the second prototype, the engine Hispano-Suiza 12Y-29, a cannon and two machine guns
Many D. 520.03 the third prototype, the engine Hispano-Suiza 12Y-31 was přeplňován kompresorm Szydlowski
Many D. 520 C1 mass-produced aircraft, a total of 905 aircraft
Many D. 520Z one prototype with landing gear Messier, more powerful engine and improved cooling
Dewotine D.521 built only one prototype with the engine of the Rolls-Royce Merlin III later rebuilt in standard form
Many D. 523 only one prototype, the treatment of D.521, the new engine Hispano-Suiza 12Y-51
Many D. 524 only one prototype, the treatment of D.521, the new engine Hispano-Suiza 12Z-89ter
Many D. 550 only one racing aircraft, was built in 1939, the engine of Hispano-Suiza 12Ycrs
Many D. 551 rozestaveno 18 aircraft for the army on the basis of D.550, that before, the engine Hispano-Suiza 12Y-51
Many HD.780 the hull of the float fighter was taken from the serial D.520
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Many D. 520 - history and deployment[/heading]

French industrialist, co-founder, technical director and at the same time, the chief designer of aircraft factory of the Société Aéronautique Française-Avions Émile Many began to celebrate the achievements of in France mainly with their structures dolnoplošných single-seater fighters series , the prototype of D.500.01 took off 18. June 1932. First, it was necessary this time modernly conceived a machine to get rid of some of the deficiencies, technical defects and childhood diseases, and so up to 29. November 1934 took off the first serial aircraft [url=/topic/view/1059/Many-D-500-C-1]D.500 C1. Thanks to the installation of the engine Hispano-Suiza 12Xcrs was founded very soon there fighter jet D.501 C1 and in August 1934 flying Dewoitinův test pilot Marcel Doret prototype of the executive fighter of the machine D.510, the increase in performance for the fighter jets to ensure the new engine Hispano-Suiza Ycrs. Unfortunately for this Dewoitinovu fighter, just in the middle of the thirties of the last century in developed countries, it's massive and rapid development of fighter aircraft and so it happened that at the time when the start of the French air force (Armée de l'air) take these machines to their equipment, it was half of 1936, this type was already obsolete.

Failure D.513

Émile Many on this fact and on the request command of the air force answered already in 1936 a new type of designated D.513. It was a plane with a smaller wing, a more modern samonosným gear and also with nedobrými flight characteristics, the prototype was fairly radically edited, but even then, there was no significant improvement in performance and flight characteristics. The prototype is yet participated in the competition and failed. The winner of this competition has been declared a type of Morane-Saulnier MS.405. Work on the D.513 were subsequently completely stopped. Émile Many undergo nepodařenou the construction of a thorough analysis, at the same time trying to get acquainted with new designs from the Uk and from Germany. With performances Hawker hurricane each and Supermarine Spitfire excited about also command of the Armée de l'air and this enthusiasm has led to the build of the other specifications for the new fighter jet. This fighter was to achieve a speed of 500 km/h at an altitude of 4 000 m and to a height of 8 000 m had to ascend a maximum of 15 minutes. Armament was required on the same level of the previous French fighters, i.e. one hard cannon in the axis of the engine and two machine guns of 7.5 mm.

the Construction of a new factory in Toulouse

At that time there was also an organizational change, Émile Many left the company of the Société Aéronautique Française, along with him went also the designers Robert Castello and Jacques Henrat and the design team immediately began design work on a completely new type of fighter. For these purposes was established a private design office and a new project was initially a purely private actions financed by Émile Dewoitinem, who is also working on the project still managed to organize and finance the construction of new aircraft factories in the Toulouse.

the Project of the new fighter jets

Dewoitinův design team designed a low-wing plane, which was to be driven by an engine Hispano-Suiza 12Y-21 on the performance of 900 horsepower, the rear part of the fuselage was taken almost without changes from the failed prototype D.513, a-wing originally had the span of 11 metres, from his leading edges to slide in and out slots Handley Page. Command of the air force should to this project considerable reservations, especially jednonosníkovému making wings, which was considered not very solid. Then Armée de l'air changed its previous requirement for maximum speed, newly was required to reach 520 km/h. Many are acquainted with the dismissive evaluation of her project, the construction of the wings kept unchanged, only about 800 mm shrunk his margin, the fuselage modified so that to him later, it was possible to install a much more powerful engine, the prototype of which motoráři fy Hispano-Suiza just finished. In January 1937, the Armée de l'air issued the specifications And.23, in which it was officially a requirement for a new fighter promulgated. These specifications answered by a large number of factories and so entered the competition a large number of types, this was the Morane-Saulnier MS.450, Loire-Nieuport CAO.200, Caudron C.R.780, later also Marcel Bloch MB.152 and MB.155 and finally, Vernisse-Galtier (Arsenal) VG.30.

the Nationalization of the aviation industry

Now we come to the point that the entire project caused significant delays – in march, 1937, was nationalized almost the entire French aerospace industry, even the new Dewoitinova factory in Toulouse has become a part of businesses the Société Nationale de Constructions Aéronautiques du Midi (SNCAM). With a hopeful project D.520 until January 1938, nothing happened in January a few kresličů ventured into the sets of drawings, which allow the construction of a prototype and this work, again funded from their private resources Émile Many. The French Armée de l'air also finally sway the susceptible and in march 1938 issued its plan for the production of the aircraft, which was required for the nearest time, the plan was marked with the letter "V". Unfortunately, for the hopeful and the executive Dewoitinu D.520 should be the factory SNCAM to build a 130 fighters MS.406. Many was of such a decision, a desperate, protested against such a senseless decision and pointed out, inter alia, on the fact that his type is much more technologically advanced and the number of hours needed to produce one machine is compared to Morene-Salnierům roughly half (at least according to the calculated values). The ministry of aviation eventually 3. April 1938 signed the contract on delivery of two prototypes under the condition that the aircraft will fly at the speed of 520 km/h at 8 000 m rise in 13 minutes, and max. the range will be 1 000 km. 27. June was completed a wooden mock-up in 1 : 1 scale, representatives of the air force pushed through several changes and finally the first prototype was completed in September 1938.

Prototypes

On this first prototype was to see, that was completed in great haste, Many didn't want to wait for the full trojlistou propeller and powerful motor spinning two-blade wooden propeller with blades with fixed angle of attack, such a propeller could not effectively transfer the power of the engine. Incomplete was the cab, missed the middle part and so Marcel Doret had 2. October take off with an open cabin. Already during the second flight was made to test the maximum speed and the requirement of the air force lacked a 40 km/h. The technicians and the designers proceed to the adjustments, the cabin was completely obscured by, the two coolers under the wings were replaced with a single radiator under the fuselage, this modification have been removed, a tendency to engine overheating and increasing the SOP was removed slight directional instability. In November 1938, the thus modified the prototype reached a speed of 500 km/h and 13. January 1939, after replacing the engine, which had ejector exhausts (showed a measurable forward thrust) has reached the finally desired speed 520 km/h. Test pilot Michael Détroyat, who took the prototype test on the wishes of the president of the nationalised aviation industry, praised in particular the controllability D.520, that according to him was much better than could boast of a MS.406. In the trials, meanwhile, could involve a second prototype, this was completed 6. January 1939 (the original the air force requirement was 1. January). Test pilot Léopold Gauls in the second flight reached in a dive speed of 825 km/h, the aircraft was slightly damaged, but this rate was much higher than was calculated. This prototype was soon handed over to the test center (CEMA) in the Paris and here has reached the maximum speed 527 km/h and climbed to 10 500 m. On the basis of these tests was 14. march of the agreed order on the first dvousetkusovou series of aircraft. The second prototype was modified into the form of serial machines, which meant that the airframe was installed in a new engine, this time it was the version Hispano-Suiza 12Y-31, his camouflage represented the discoloration of the serial of the aircraft and on the tail appeared mark D.520-02, still the second prototype carried the same designation as the prototype of the first, it was probably because of the secrecy. This modified aircraft has reached in the first decade of September 1939 maximum speed of 550 km/h. In tests, meanwhile, has been joined by the third prototype, first flew on 5. may 1939. This prototype is first tested by the belgian pilot, because Belgium was a potential customer and from 17. August was the prototype handed over to the service CEMA. Here was tested the armament, the aircraft was destroyed during emergency landing 12. may 1940.

Mass production - the beginning

So how are the tests carried out to detect the good qualities of the new Dewoitinovy fighter, so he adapted the previously mentioned plan "In". Armée de l'air requested what can be the fastest supply of these fighters. After the first order for 200 aircraft was followed by another order for the other 252 aircraft with the date of production June 1939 to December 1940 had to be delivered to the other 710 D.520. Immediately after the beginning of the war the order was adjusted and by the end of 1940 should be made 2 100 D.520! However, the reality was quite different - the first serial aircraft was completed in October 1939, after France's entry into the war, this aircraft Marcel Doret flying 31. October 1939. From prototypes is again different, the main change was the installation of the engine Hispano-Suiza 12Y-45, this engine spinning trojlistou automatically variable pitch propeller Ratier type 1606M. Changes underwent also the armament of two machine guns were no longer in projections in the under the wings, were newly installed right into the wings and into each half of the wings were stored two machine guns of type the MAC 1934 M39 and, for each was carried 675 rounds of ammunition, a total of so serial aircraft carrying the next dvacetimilimetrového cannon, four machine guns, caliber 7.5 mm. The first production aircraft (a few dozen) showed a relatively frequent defect in pneumatic control these guns, but the firepower increased and substantially increased the supply of ammunition for machine guns, was originally carried 300 rounds of ammunition for each. No less significant change was also the installation of two stodvacetilitrových tanks before the wing spar. These wing tanks were not self-locking, armored protection, in contrast, the received pilot seat. The second serial plane took off 3. December and the third 10. December 1939. It began to be obvious that such a large supply of D.520 fails to comply with, therefore the ministry of aviation has requested the ministry of industry, to build a new production line for these aircraft outside the factory in Toulouse, where has been prepared a third production line. In France, however, it was no longer usual, that these production lines did not receive the required number of engines Hispano-Suiza and if the engines arrived, were not for them, the ejector exhausts, or was the lack of a propeller, by and large the production line could never work on the planned performance. Workmanship also often lags. To 1. march completed the SNCAM 74 aircraft, but only 43 aircraft took over the centre CEMA or CRAS (this latter was the inspection centre serial aircraft). The problems with the armaments was driven to remove from April 1940. Provide also the suction throat of the compressor and finally ensure a secure supply of the right exhaust manifold. Address still modifications of the cooling system, because with the increasing power of the engines appeared again a problem with their overheating. To 1. April has completed 139 of aircraft D.520 but only 32 of them took over the Armée de l'air. Not taken up aeroplanes from the first line went into the line second in the Blagnacu, where they were adjusted according to the requirements of resorts CRAS and CEMA. First here made (not modified) was in may finished the aircraft with the serial number 208, and this machine was straight away handed over to Armée de l'air. At the time of the German attack on Holland and Belgium (10. may) has been completed 228 of fighters D.520, but only 75 aircraft took over the Armée de l'air and another 28 aircraft of this amount served to the training, only 47 were in combat formations. Only one unit could be sent to the northeast of France, this unit was Groupe de Chasse I/3, which had in its state of 38 D.520, of which two in practice and two in a reconnaissance version with cameras. The other 153 planes were waiting for adjustments on the line in Toulouse-Blagnacu or these modifications is going through. At the time of the surrender of France, all the factories have made 437 aircraft D.520, of this quantity taken over the Armée de l'air 351 aircraft and maritime air force, 52 aircraft. In the unoccupied part of France were 153 Dewoitiny D.520, in north Africa, there were 175 and 106 of the aircraft was destroyed from various causes.

Units of the Armée de l'air flying on D.520

The most successful unit flying on Dewoitinách was already above-mentioned unit Groupe de Chasse I/3, whose pilots up to the moment of the French surrender made 645 sorties of a total time of 800 hours and have recorded 50 certain and 18 probable kills. Their own losses amounted to 30 aircraft, but only 18 of the aircraft was taken out by the enemy. The most successful pilot of this unit was a Sous-Lieutenant Madonnas with separate four kills, three in cooperation and three kills likely.
The next unit was a group of Groupe de Chasse II/3, which had in its arsenal by 20. may 36 fighters D.520, to surrender were shot down, the pilots of the unit 31nepřátelské plane of course, 15 this is probably all in the loss of 22 of their own fighters. The most successful pilot was the captain Clausse with three of the some single kills, two kills, in cooperation and four kills were recognized as the likely, for us it is interesting, that here served the Czech sergeant Václav Sugar, which have been recognized by two individual wins and four in collaboration. Of the other Czechoslovaks here flying sergeants Gleich (2 certain victories) and Peroutka (1 standalone + 1 in collaboration).
Unit , the Groupe de Chasse II/7 hit with your Dewoitinami to fighting 1. June, because she fought only for a short time, has reached a 12 certain and four probable kills. Before that, she was relatively successful with their Morana-Saulniery MS.406.
Of the other units, which intervened in the fighting on D.520 these were the Groupe de Chasse III/3 (8 kills certain and 2 probable), of the Czechs here flying Lieutenant Siskin and Lieutenant Cermak and the sergeant Goldfinch and the last unit of the Armée de l'air equipped Dewoitinami she was a fighter group Groupe de Chasse III/6, which fought against the Italian air force.
Total have reached the pilots of these units 108 certain kills and 19 likely. With regard to the fact that the fighting lasted from 10. may to 25. June, it hadn't been for units of the Armée de l'air is definitely a bad result. Marine unit AC1 in the fighting did not hit and after the surrender flashed their serviceable fighters to north Africa, as well as do the units of the Armée de l'air and the other units of the training centres or purpose incurred by a unit whose members were test pilots..

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In the service of the Armée de l'air de l’ Armistice - the resumption of production

As I mentioned, in north Africa was, among other types, 175 aircraft D.520, these aircraft were not allowed, according to the kapitulačních conditions to take off and so it was until August 1940 (when the british association attacked the French ships in the port of Mers-el-Kebir). That's when the Germans and Italians have enabled the government in the Vichy, to build up a numerically limited force, which included four fighter group and two squadrons armed with D.520, but had to be stationed only in Africa. In April 1941, received vichystický the authorisation regime to the resumption of production D.520 in the Germans unoccupied zone. Besides all the other types could vichy air force Armée de l'air de l’ Armistice and the Aéronavale (naval aviation) to obtain 550 new D.520 over the course of two years and nahradít this type of other fighter aircraft that this two folder should be in your arsenal. Meanwhile, in December 1940 disappeared the company SNCAM and its production factory accounted for to the company SNCASE and this association of enterprises, therefore, took the order, and 550 aircraft D.520, the order was already laid out for a period of three years. The first vichystická D.520 left the production factory in July 1941, the SOP was the serial number 475 and 26. July it zalétl test pilot Pierre Nadot. The aircraft had a slightly lower performances, in the absence of ejector exhausts. The production wasn't smooth, were losing the supply of undercarriage parts and so by the end of the year was delivered only 73 D.520. In most aircraft (197 planes) was fitted the engine Hispano-Suiza 12Y-49, which was, due to its larger compressor, optimized for greater heights than the original engine (Hispano-Suiza 12Y-45). Production on the line Saint-Martin de Touch ran until the end of 1942, shortly after the Germans occupied vichystickou part of France (11. November 1942) and the total added 349 new aircraft, another 150 were positioned. To cast the whole of France was underway and design development of "pětsetdvacítky". First, it was just the installation height of the engine 12Y-49, changing the shape of the coolers, complete covering of the chassis, further attempts to introduce the production of D.551 or D.551, the construction of a prototype D.520Z, project M.520T and D.600 for Spain.

D.520 is fighting on the other side

Years ago "pětsetdvacítek" in Africa the Germans and Italians a lot reduce, a fighter group received only a small amount of fuel, and a few flings of the French pilots on the enemy side this situation even worse. 24. in may 1941 she received a unit of Groupe de Chasse III/6 of the order moved to the syrian Rayaku, the unit at this base got 7. June and already next day began to attack the Free French forces and the United kingdom. Vichy Dewoitiny and Morane-Saulniery fought against Tomahawkům, Gladiators, Hurricanům, Fulmarům, Lysanderům and Blenheimům. During the first week of this unit carried out a 250 sorties, reached 11 certain and 3 probable kills (11-3), paid for it loss of 10 D.520. At the end of next week, left three airworthy Dewoitiny. On his base in Algiers , the Groupe de Chasse III/6 come back 13. July, the syrian campaign ended with the following result 549 operational flights, 21-4 victories and the loss of 20 aircraft. The second unit on the syrian battlefield was Groupe de Chasse II/3, during the move into the Homs lost this unit three aircraft and 14. June came 21 aircraft, 12. July the unit was from Syria dropped with this result – 350 sorties, 3-2 downed aircraft and their own loss of 17 aircraft. On this battlefield, intervened in the fighting and the naval squadron 1AC with twelve of D.520, operated from the airport Tafaroiui and was accompanied by naval bombers on their bombing missions. The result was a 6-1 kills in the loss of two aircraft and one lost during a layover.
Dewoitiny also perform several attacks against the british Gibraltar and british ships.

8. November 1942 began the allied landing in French north Africa - operation Torch, against the allied forces were the four vichy fighter group, the three of them should be in the arsenal of D.520, those in the morning of the first day of the landings effectively hit. The pilots in Groupe de Chasse III/3 has managed to shoot down nine of the attacking Albacorů and three attendants on-board fighters Seafire F. Mk.III from the carrier HMS Illustrious, Groupe de Chasse III/3 lost one aircraft, fighting continued throughout the day, in the afternoon came the Groupe de Chasse III/3 on the next D.520, shot down two british Sea Hurricanes. At the end of the day was the ratio of kills and losses the following – 17-7 : 5.
Also the naval air force actively intervened in the fighting, D.520 from both squadrons, therefore, the 1AC and the 2AC, the aircraft has taken off from its base in Port-Lyautey and attacked the morning of the 8th. November against ships of the american Task Force 34. Two Dewoitiny were shot down and three were damaged by american anti-aircraft fire. D.520 departed to replenish the ammunition for their base, but it was shortly after their landing attacked by forty cabin bombers from aircraft carriers the u. s. s. Sangamon. Incendiary bombs so destroying the other three Dewoitiny on the ground, the fourth a French fighter shot down the accompanying F4F Wildcat. In the evening hours it was on the ground destroyed the other nine D.520. Both squadrons were added and re-designated, this time at 1C and 2C, at the beginning of the year 1944 dissolved.

Production under German control – the supply of the allies of Germany

Dewoitiny D.520 they fought against the allied powers in letectvech other vassals of Germany. 11. November 1942, the occupied by German troops, France and Germany had 246 Dewoitin D.520 and 62 others, of which the company SNCASE made by the end of 1942. Another 150 fighters were in various stages of construction. Germany already during January 1943, the orders of the company SNCASE, to finish all unfinished machinery and also to undertake the revision to the 242 of captured fighters. SNCASE completed the first revision of the already in the following month and from April the production line were newly built machines. The germans in the years 1943 and 1944 ordered the production of other aircraft, and until the liberation of south east France by allied forces gained Germans 150 newly manufactured aircraft and 168 aircraft after the revision, the total was made 905 aircraft D.520.

Luftwaffe included D.520 to your arsenal, you probably have several of them deployed on the eastern front, but the military use is not confirmed, what is certain is that is in the year 1944 should be in the arsenal of JG 101, JG 103 and JG 105. D. 520 here used to training, to fitness, flying, etc., many Dewoitin was damaged or destroyed by frequent accidents.

Regia Aeronautica acquired after the surrender of France a few fighter aircraft D.520, which the Italians used in Libya. Another thirty Dewoitin acquired from the Germans after the complete cast of France, most of them Regia Aeronautica was 47, it was at the beginning of August 1943. Italian Dewoitiny, however, suffered large losses, because the already 8. September 1943 (Italian surrender) was left to the Italians only six! Dewoitin and the other seven were found to be capable of repair.

Bulgarians had until the end of 1942 greatly unfashionable air force, the fighter force was in a state of high-wing aircraft PZL P-24B, which in 1938 purchased in Poland, together with the rights to their licensed production. Furthermore, the Bulgarians at the beginning of 1940 I managed from Germany purchase 78 dvouplošných Avia B.534 (together with 62 ©.328 and 32 Avia B.71). The only modern force was ten Messerschmitt Bf 109 E-4. The bulgarians limited fight with the Yugoslavs and nebojově operated in Greece, but the Germans on their Bulgarian allies had pressured to make Bulgaria actively participated in the fighting, thanks to the fact came from Germany reinforcements and the fighter got twelve in the protectorate for them produced fighters Avia B.135 ( in Bulgaria Av-135), taken in early 1943. In the summer of this hand began arriving the first of hundreds of Many D.520. In the summer, also killed the Bulgarian tsar Boris III., which has so far successfully resisted the pressure of Germany, for a new minor the tsar reigned from August of the regent council and the result was the termination of the war against the United states. Bulgarians from September had their state of the art aircraft to deploy against american Liberatorůmthat they flew through Bulgaria in an air raid on the Romanian oil fields. Many D. 520 they fought not only with bombers but also with fighter escort – with dvoutrupými fighter bombers P-38 Lightning. The Bulgarian losses were probably considerable, because after half a year of fighting had to be Dewoitiny supplemented and replaced by modern Messerschmitt Bf 109 G. Several Dewoitin here war survived and subsequently were used for training until the fifties.

the Romanian air force was also used several machines Many D. 520, but it is not certain whether they were used for combat operations..
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D.520 in the ranks of the allied air force

Unit the renewed Armée de l'air stationed in north Africa have undergone a reorganisation, originally had each fighter group (Groupe de Chasse) of the two squadrons, after the reorganization were the squadron of three. Thanks to this change had to be fighter group , the Groupe de Chasse II/6 disbanded and its two squadrons were transferred under the Groupe de Chasse I/2, and under the Groupe de Chasse I/4. In Algiers it was to 1. February 1943 95 aircraft Many D. 520, in Morocco 40 and Senegal 25. The Inclusion Of D.520 to the allied air forces was not easy, complicated is for example French radio, which worked in the VHF band. Initially these machines deployed for attacks on German and Italian troops, but were gradually Dewoitiny being replaced by Curtissy P-40F Warhawk and Spitfire F Mk.VB and a little later the French also got a fighter Bell P-39N Airacobra. Units equipped with british aircraft were under british command, and the Americans lead the French fighter groups, which flew on american machines. D.520 transferred to training squadrons in the Marrakech where the French pilots walked through the more intensive flying, to restore the air habits. Under the German supervision is too flying and pilots were losing their habits and sensibility. Groupe de Chasse I/2 was the last fighter group, which had in its arsenal D.520, fully rearmed until the end of the year 1943, when Britain took over the Spitfires F Mk.VB and F Mk.IX. Many D. 520 then served almost exclusively to the training of the French pilots, who later migrated to Airacobry. Status D.520 is then gradually decreased, in January 1945, it was available only 30! machines and at the price of the "cannibalization" of other Dewoitin. The end of the war was to France sent 20 aircraft, which flew in flight school in Tours.

In the service of the Force Francaises de l'intérieur

In July 1944 at the instigation of the French provisional government is formed aviation unit to support ground internal forces. In August of this year was established fighter group Doret under the command of former Dewoitinova zalétávacího pilot Marcel Doreta. Fighter unit of the FFI was formed at the airport Ossun and operated and from the airport Toulouse-Blagnac. This unit was in service with the D.520, with which it participated in the battles with the obklíčenými German forces in Oléronu, Pointe de Grave, Rochefort and Royanu. Pilots Dewoitin accompanied the bombers and fired at the German troops. Day 1. December 1944 after the restoration of the French air force from Groupe Doret became the Groupe de Chasse II/18 "Saintogne". In her armament was the 15 fighter D.520, which was in march of 1945, passed partly to the school unit and partly also the fighter-bomber unit GCB I/18 "Vendée", that ended the fighting up to 8. may 1945.

the post-war period – the end of his career.

After the cessation of fighting in southern and eastern France was 50 variously damaged aircraft repaired in factories in Toulouse and in the Tabres and when the war ended in Europe, was the factory SNCASO in Saint-Nazaire awarded the purchase order for the repair of all of the then existing D.520 (in total there were dohledáno about 60), it was finally the end of the year 1945 fixed only 20 aircraft. The last zkompletovanými Dewoitinami was the preparation of thirteen double-digit D.520DC factory SNCAC in the Colomes. Here there was no production aircraft were assembled from dismantled or already cancelled aircraft and spare parts previously manufactured.
The last unit which had D.520 in a state of bala demonstration squadron EPAA.58 (Escadrille de Preseentation de Armée de l'air), here D.520 were replaced by soviet aircraft yak-3, which belonged to the regiment Normandie-Niemen. EPAA got to September 1948 a total of 9 D.520 and latest years D.520 here was carried out 3. in September 1953, the end of the month, this squadron disbanded..
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Further development on the basis of D.520 (projects and prototypes)[/heading]

D.521 – soon after the start of production, began to late delivery of engines Hispano-Suiza 12Y-45, the jets D.520, however, have been necessary, therefore, it was in October 1939, it was decided that from 251. built D.520 will be produced by a version powered by a british engine Rolls-Royce Merlin III, this decision was within mere months cleared, but Merlin was in 41. airframe built. Took off 9. February 1940, the test pilots found that the aircraft was heavy on the head and directionally unstable, the speed, however, due to the higher engine power increased to a value of 570 km/h. After two weeks, during which it was carried out seven flights, the aircraft was rebuilt to its original form.

D.522 – such a label carrying the project, which was created again on the basis of the needs of the powerful fighters that they never had the French production capacity. These aircraft should be manufactured in the United states concern Ford, the aircraft was to be powered by an american engine Allison V-1710C-15 on the performance of 764 kW (1 040). Negotiations on this production interrupted by the surrender of France (22. 6. 1940).

D.522 – this is not a bug, this designation was used again, should be marked with high-altitude version, powered by a Hispano-Suiza 12Y-31, the engine was supercharged Szydlowski and has been debugged to a great height. To implement the project has already occurred.

D.523 – this was supposed to be about mass production, it was planned that from the 601. production aircraft will be fitted the engine Hispano-Suiza 12Y-51, which will be přeplňován supercharging Szydlowski-Planiol. The aircraft in this version of the he flew from 9. may 1940, to verify any changes requested by the centre CRAS and CEMA. Maximum speed reached was 570 km/h.

D.524 – nezalétaný prototype, the airframe D.521 was installed the engine Hispano-Suiza 12Y-89ter of the performance of 882 kW (1 200 k), this version should be produced from 781. built the machine. Performances were only calculated, but the calculations indicated a speed of 616 km/h.

D.525
– again, should be about mass production, this version was identical to the D.523, only the engine Hispano-Suiza 12Y-51 should be přeplňován compressor Hispano-Suiza. Production should start os 751. Produced aircraft.

D.520Z - built only one prototype, which remained nezalétán, designed already in 1939. Characteristic was the extended bow, in which the engine was the Hispano-Suiza 12Z about the performance of 882 kW (1 200 hp), later versions of this engine reached power 956 kW (1 300 hp). The construction of the prototype began only in June 1942 on the territory of Vichy France and with German consent. All work then in march 1943 they stopped the Germans, the prototype was just before zalétáním. The French until quite long after the war (1947) wanted to continue, but in the end were made only of ground tests.

D.550 – was a special speed aircraft which have proceeded from the airframe D.520, had already with the original construction of fighter jets a lot in common, the modifications made have given rise to a new type. The speed of the aeroplane waited so long for the engine of the Hispano Suiza 12Z, that finally record acquired the German Fritz Wendel with the Me-209V1.

D.551 - after tests the speed of the special D.550 requested army air force presentation to the military form. The first prototype was completed in the spring of 1940, but was already in a surrender fly and German permit to fly not obtained.
For the serial production of the aircraft was envisaged with the installation of the engine Hispano-Suiza HS 12Z.
The plane was so technologically improved, that was for his production counted only 4 000 hours. Positioned was eighteen aircraft, which was eventually scrapped. For these aircraft was planned armament of five machine guns MAC-caliber 7,5 mm.

D.552 – it was in essence a subversion of the previous machine, which had in the wings have two more guns.

D.560 – steps were marked with two prototypes D.551, which have been stripped of military equipment, were subsequently reclassified on the "sports planes", but after vainly waiting for permission to zalétání from the German authorities, suffered the same fate as the original D.551.

M.520T - this project represented a secret development in the ongoing since the autumn of 1940 in the design office SNCAM, it's supposed to be D.520 on steroids. Actually it was a new type, which was based on a D.551. Designation M.520T was camouflage for the Germans, the machine should be driven by an engine Hispano-Suiza 12Z and the calculated rate should reach a value of 687 km/h at an altitude of 8 600 m. the End of the project came with the occupation of vichy part of France.

H.D.780 – prototypes of a naval flotation of the aircraft, these machines had a fuselage of D.520, the wing was completely new. The prototypes were not zalétány, because to surrender were not available engines.

D.790 – the project on-board fighters for aircraft carriers Joffre and Painlevé. The project was submitted to the paris office of the engineer Roger Legrixe. Naval aircraft should very closely follow up on the ground D-520. The new should be folding wings, which should be equipped with watertight compartments, that in the event of an emergency landing on the surface should ensure the pilots enough time to leave the aeroplane. The tail section was reinforced and should be installed the landing hook. Engineer Legrix solved, at least in theory, changes to the chassis, its suspension and increase the gap between the blades and the flight deck. The surrender of France to prevent any stage of the implementation of this project.

Hispano-Suiza H.With.50 – (Many D.600) from the year 1940 being developed for Spain, where he had to replace the outdated dvouplošné fighters Fiat C.R.32, finally it was in 1943, built only a wooden mock-up in real size and in June of the same year were all work stopped.

D.520DC – Double Command (double management) 13 aircraft were created by modifying from a single D.520 in the factory SNCAC in Colombees, adjustment was made after the war, the maiden flight of the first was conducted in October 1945..

URL : https://www.valka.cz/Dewoitine-D-520-t19964#519880 Version : 0
sources:
Bartłomiej Belcarz, Many D 520, Sandomierz, Poland/Redbourn, UK, Mushroom Model Publications, 2005, ISBN 83-89450-09-7.
William Green, War Planes of the Second World War, Volume One, Fighters, London, Macdonald & Co.(Publishers) Ltd., 1960, 10th impression 1972, ISBN 0-356-01445-2.
Raymond Danel, The Many 520, Aircraft in Profile number 135, Windsor, Berkshire, UK, Profile Publications Ltd., 1971.
Michel Ludwig et Bénichou, Americaan D.520, Le Fana de l'aviation, No. 255, June 1999 ISSN 0757-4169
Squadron/Signal. Aircraft Number 180. Alain Pelletier. French Fighters of World War II
Witold Szewczyk, Samoloty on you walczyli Polacy, Warszawa, Wydawnictwa Komunikacji i Łączności, 1988, p. 88-91, ISBN 83-206-0738-8.
Of aeronautics and astronautics no. 9-12/ 1995, volume LXXI., George Hornát, Monograph Many D. 520,
http://www.airwar.ru/enc/fww2/d520.html
www.militarium.net
www.todo-aviones.com.ar
www.aviastar.org
www.historyofwar.org
www.historyofwar.org
http://www.airwar.ru/enc/xplane/d550.html
ww2fighters.e-monsite.com
http://www.ww2warbirds.net/ww2htmls/dewod520.html
www.samolotypolskie.pl
archives of the author.
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Dewoitine D.520 - Montážna linka D.520 továrne v Saint-Martin-du-Touch, 2/1940

Montážna linka D.520 továrne v Saint-Martin-du-Touch, 2/1940
Dewoitine D.520 - Fotka z 28.6.1940

Fotka z 28.6.1940
Dewoitine D.520 - 7.10.1942

7.10.1942
Dewoitine D.520 - 7.10.1942

7.10.1942
URL : https://www.valka.cz/Dewoitine-D-520-t19964#733835 Version : 0
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