Pokrywa się to co piszą na temat rozwoju Boforsa i decyzji zmiany kalibru z 20 mm na 40. Myślę, że można to rowniez odnieść do dział p.lot większego kalibruCo do siły rażenia - zgoda. Pocisk koło 40 mm to właściwie musiał trafić samolot bezpośrednio żeby zrobić mu krzywdę.
Maciej3
Zwiększając ilość luf na jednym stanowisku, zwiększamy prawdopodobieństwo trafienia i zakładając, że 1 pocisk jest zdolny zniszczyć samolot, to zwiększamy szanse na zniszczenie samolotu(In ) Year 1928 doubts about sufficiency of 20-mm calibre surfaced (The basic idea was that single hit had to be capable reliably destroying aircraft), so development goal was changed to 40-mm automatic gun.
Powyższe dane przedstawiłem by zilustrować efektywność broni p.lot, która spadała wraz z wysokością.siła przebicia pancerza dla FlaK 30 przy 30 stopniowym kącie podniesienia
100 m - 20 mm
500 m - 14 mm
1000 m - 9 mm
jefe de la maquina
Dla Boforsa 40 mm, którego maks. zakres był 5000m wymienia się
Anglicy mieli początkowo b. duże problemy z bronia p.lot. Można nawet zaryzykować twierdzenie, że byli zupełnie nieprzygotowani. Dodatkowa utrata sprzętu Korpusu Ekspedycyjnego we Francji spowodowała, że początkowy okres wojny to była wielka improwizacja. Tak jak Marek T podkreślił wyciągano z magazynów sprzęt z I wojny, patrzEffective range vs air targets 2000 m
oraz powiększano sprzęt drogą zakupów:. I takIn the crisis following the Fall of France, where a large part of the British Army's supplies had been lost, stocks of Lewis guns in both .303 and .30-06 were hurriedly pressed into service, primarily for arming the Home Guard and purposes such as defending airfields and anti-aircraft use. 58,983 Lewis Guns were taken from stores, repaired and refitted, and pressed into service by the British during the course of World War II. The Lewis gun also saw continued service as an anti-aircraft weapon during WWII, and in this role it was credited by the British as bringing down more low-flying enemy aircraft than any other AA weapon they had in service.
Przed 2 wojny Vickers produkował działa p.lot. 75 mm. Oto co piszą na ich temat:In 1941, when Britain was desperately short of all types of weapons, several thousand Marlins Anti-Aircraft machine gun were supplied by the USA, all of them dating from WWI and all heavily protected in preservative grease. These guns were activated in a very short time and used, for anti-aircraft defence on small merchant ships.
Ostatnia uwaga na temat systemu kierowania ognia jest ciekawa i wskazuje, że Anglicy mieli dużo do poprawienia.Vickers-Armstrong made the first M. 31 75 mm AA gun in 1920. Even though it incorporated many modern features the British Army initially refused it. However, it had more success abroad, where it was bought by Belgium, Lithuania, Holland, Portugal, Turkey and China. In 1935 it was selected to be the new standard heavy AA gun of the Romanian Army.
The initial 25 batteries also included a fire control system, built by Vickers, but which was already outdated at the beginning of the war. It was replaced by a Romanian system created by major Bungescu, which permitted the coordination of multiple batteries and obtained better results.
Systuacja zmieniła się w połowie roku 1941, kiedy rozpoczęto produkcję Oerlikonów.
Co do pom-ponów to nie uchodziły za dobrą broń,. głównie ze wzgledu na mały zasięg oraz kłopoty z parcianymi taśmami nabojów, które przy wysokich kątach podniesienia skręcały się i powodując zacinanie się broni.The Royal Navy adopted Oerlikon autocannons much later compared to the Germans and the Japanese, not signing a contract with the Swiss firm until 1939. The contract was for 1,500 units, but only 109 units were delivered due to the German invasion of France. However, sensing German threat, Oerlikon approached the British government and asked for permission to relocate its production to the United Kingdom, which was granted immediately. The Royal assisted the company in sneaking technical drawings and other documents out of Zürich, and by end of 1940 British-made 20-mm Oerlikon autocannons were coming off the production line of the new factory at Ruislip, London, England. The first delivery of these British-built Oerlikon autocannons were made to the Royal Navy in Mar or Apr 1941
.Unfortunately these shared characteristics included also unreliability and short range (caused by weak ballistics of 40 mm x 158 R ammunition). The inreliability was partly due to fabric ammunition belts used in them. After World War 1 development of 40-mm Vickers automatic gun continued and they saw large scale use with British Navy during World War 2
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