The LeO H-246 was designed by the French aircraft manufacturer Lioré-et-Olivier to meet a 1935 specification for a commercial flying boat for use on the Mediterranean routes of Air France.[1] It was a four-engined parasolmonoplane of mixed construction and powered by four 720 hp (537 kW) Hispano-Suiza 12Xir liquid cooled V12 engines. All four engines were mounted in streamlined nacelles ahead of the leading edge of the wing. It had a duralumin hull which was of similar layout to that of Lioré et Olivier's H-47; it had seats for 26 passengers, and a crew of four.[2][3]
The prototype H-246.01 (Lioré et Olivier's factories had been nationalised at the end of 1936, so the aircraft was built by Sud-Est) made its maiden flight from the Étang de Berre on 30 September 1937.[1][4]Air France placed an order for six H-246.1 aircraft in January 1938, with the prototype also being brought up to production standard for commercial service.[1][4]
Operational history
The refurbished prototype and the first production aircraft were being readied for commercial service when the Second World War broke out in September 1939. The French Navy drew up plans to requisition the H-246s as maritime patrol aircraft, but Air France still needed them, and the Navy agreed to take over only four of the aircraft.[1] This allowed Air France to commence operations with the prototype on the Marseille–Algiers route on 14 October 1939.[4]
The third production aircraft was completed for the Navy in June 1940, with a glazed position in the nose for a bombardier/navigator, bomb racks below the wings and four 7.5 mm Darne machine guns as defensive armament. It entered service with Escadrille 9E on 25 August 1940, the only aircraft of the type actually to be operated by the French Navy, with the remaining aircraft going to Air France.[4][5]
In November 1942, the Allies landed in French North Africa and, in response, German forces occupiedVichy France. They seized the single French Navy H-246,[6] along with three Air France aircraft.[7] Two more Air France aircraft were at Algiers at the time and so escaped seizure by the Germans. (The prototype H.246 had been withdrawn from use in 1941).[4]
The German Luftwaffe took over the three seized ex-Air France aircraft, fitting them with five MG 15 machine guns as defensive armament and carrying up to 21 soldiers or 14 stretchers. The aircraft were used for various tasks, including transport in Finland.[7] The ex-French Navy H-246 was destroyed at Lyon by Allied attacks in the spring of 1944.[4] After the war, the two surviving H-246s were used by Air France to restart the Marseille–Algiers service, continuing in use until September 1946.[4]
Bousquet, Gérard. French Flying Boats of WW II. Sandomierz, Poland: Stratus, 2013 ISBN978-83-63678-06-7
Donald, David. The Encyclopedia of World Aircraft. Leicester, UK: Blitz Editions, 1997. ISBN1-85605-375-X
Green, William. War Planes of the Second World War: Volume Five Flying Boats. London, Macdonald, 1968. ISBN0-356-01449-5
Nicolaou, Stéphane. Boats & Seaplanes: A History Since 1905. Bideford, UK: Bay View Books, 1998. ISBN1-901432-20-3.
"Plane Facts: LeO in Finland". Air International August 1972, Vol 3 No 2. pp. 106–107
Stroud, John. "Wings of Peace: Lioré et Olivier H 46 and H 246". Aeroplane Monthly. January 1992. London: IPC, pp. 48–52
January 05, 2023
lioré, olivier, large, four, engined, flying, boat, from, late, 1930s, 246role, transport, flying, boatnational, origin, francemanufacturer, lioré, oliviersud, estfirst, flight, september, 1937introduction, 1939retired, 1946primary, users, franceluftwaffenumbe. The Sud Est LeO H 246 was a large four engined flying boat from the late 1930s LeO H 246Role Transport flying boatNational origin FranceManufacturer Liore et OlivierSud EstFirst flight 30 September 1937Introduction 1939Retired 1946Primary users Air FranceLuftwaffeNumber built 6 Contents 1 Development and design 2 Operational history 3 Operators 4 Specifications H 246 1 5 See also 6 References 7 BibliographyDevelopment and design EditThe LeO H 246 was designed by the French aircraft manufacturer Liore et Olivier to meet a 1935 specification for a commercial flying boat for use on the Mediterranean routes of Air France 1 It was a four engined parasol monoplane of mixed construction and powered by four 720 hp 537 kW Hispano Suiza 12Xir liquid cooled V12 engines All four engines were mounted in streamlined nacelles ahead of the leading edge of the wing It had a duralumin hull which was of similar layout to that of Liore et Olivier s H 47 it had seats for 26 passengers and a crew of four 2 3 The prototype H 246 01 Liore et Olivier s factories had been nationalised at the end of 1936 so the aircraft was built by Sud Est made its maiden flight from the Etang de Berre on 30 September 1937 1 4 Air France placed an order for six H 246 1 aircraft in January 1938 with the prototype also being brought up to production standard for commercial service 1 4 Operational history EditThe refurbished prototype and the first production aircraft were being readied for commercial service when the Second World War broke out in September 1939 The French Navy drew up plans to requisition the H 246s as maritime patrol aircraft but Air France still needed them and the Navy agreed to take over only four of the aircraft 1 This allowed Air France to commence operations with the prototype on the Marseille Algiers route on 14 October 1939 4 The third production aircraft was completed for the Navy in June 1940 with a glazed position in the nose for a bombardier navigator bomb racks below the wings and four 7 5 mm Darne machine guns as defensive armament It entered service with Escadrille 9E on 25 August 1940 the only aircraft of the type actually to be operated by the French Navy with the remaining aircraft going to Air France 4 5 In November 1942 the Allies landed in French North Africa and in response German forces occupied Vichy France They seized the single French Navy H 246 6 along with three Air France aircraft 7 Two more Air France aircraft were at Algiers at the time and so escaped seizure by the Germans The prototype H 246 had been withdrawn from use in 1941 4 The German Luftwaffe took over the three seized ex Air France aircraft fitting them with five MG 15 machine guns as defensive armament and carrying up to 21 soldiers or 14 stretchers The aircraft were used for various tasks including transport in Finland 7 The ex French Navy H 246 was destroyed at Lyon by Allied attacks in the spring of 1944 4 After the war the two surviving H 246s were used by Air France to restart the Marseille Algiers service continuing in use until September 1946 4 Operators Edit FranceAir France received 6 aircraft French Navy Vichy FranceVichy French Air Force operated aircraft taken over from Air France GermanyLuftwaffe operated 4 aircraft captured in Vichy France Specifications H 246 1 Edit LeO H 246 3 view drawing from L Aerophile November 1937 Data from The Encyclopedia of World Aircraft 8 General characteristicsCrew 4 5 Capacity 26 passengers or21 soldiers 7 or14 stretchers 7 Length 21 17 m 69 ft 5 in Wingspan 31 72 m 104 ft 1 in Height 7 15 m 23 ft 5 in Wing area 131 m2 1 410 sq ft Empty weight 9 800 kg 21 605 lb Max takeoff weight 15 000 kg 33 069 lb Powerplant 2 Hispano Suiza 12Xirs V 12 liquid cooled piston engines 537 kW 720 hp each LH rotation fitted to starboard 3 and 4 Powerplant 2 Hispano Suiza 12Xjrs V 12 liquid cooled piston engines 537 kW 720 hp each RH rotation fitted to port 1 and 2 Propellers 3 bladed constant speed propellersPerformance Maximum speed 330 km h 210 mph 180 kn Cruise speed 255 km h 158 mph 138 kn 4 Range 2 000 km 1 200 mi 1 100 nmi Service ceiling 7 000 m 23 000 ft Armament Guns four 7 5 mm Darne machine guns or five MG 15 machine gunsSee also EditLiore et Olivier LeO H 242 List of aircraft of World War IIReferences Edit Wikimedia Commons has media related to Liore et Olivier LeO H 246 a b c d Green 1968 p 44 Stroud 1992 pp 51 52 Nicolaou 1998 p 82 a b c d e f g h Stroud 1992 p 52 Green 1968 pp 44 45 Green 1968 p 45 a b c d Air International August 1972 pp 106 107 Donald 1997 p 568 Bibliography EditBousquet Gerard French Flying Boats of WW II Sandomierz Poland Stratus 2013 ISBN 978 83 63678 06 7 Donald David The Encyclopedia of World Aircraft Leicester UK Blitz Editions 1997 ISBN 1 85605 375 X Green William War Planes of the Second World War Volume Five Flying Boats London Macdonald 1968 ISBN 0 356 01449 5 Nicolaou Stephane Boats amp Seaplanes A History Since 1905 Bideford UK Bay View Books 1998 ISBN 1 901432 20 3 Plane Facts LeO in Finland Air International August 1972 Vol 3 No 2 pp 106 107 Stroud John Wings of Peace Liore et Olivier H 46 and H 246 Aeroplane Monthly January 1992 London IPC pp 48 52 Retrieved from https en wikipedia org w index php title Liore et Olivier LeO H 246 amp oldid 1001183736, wikipedia, wiki, book, books, library,
