Following on from his earlier designs Vincent Burnelli designed a commercial transport version using the lifting-fuselage concept. Burnelli's designs were based on the idea that an airfoil-section fuselage would contribute to the lift generated. The Burnelli UB-14 first flew in 1934, the airfoil-section fuselage was the centre-section of the wing. The aircraft had twin tailbooms and a widespan tailplane and elevator fitted with twin fins and rudders. The UB-14 had retractable landing gear and was powered by two Pratt & Whitneyradial engines. An enclosed cockpit for the crew of two was located on the centre wing's upper surface. The cabin held 14 to 18 passengers.
Operational history
The first prototype, UB-14, was destroyed in a 1935 accident attributed to faulty maintenance on the aileron control system.[1] Burnelli then designed and built an improved version, the UB-14B. A modified version of the UB-14B design was built under licence in the United Kingdom by Cunliffe-Owen Aircraft, powered by two Bristol Perseus XIVC radials as the Cunliffe-Owen OA-1.[2] A contemporary photo shows the mockup of the original UB-14B, to be built by Scottish Aviation before bankruptcy. This design was to have had streamline inline engines. The OA-1 used radial engines.
In September 1936, Burnelli applied to the CAA for approval to fly a transatlantic flight with Clyde Edward Pangborn as the selected pilot.[3]
The Perseus XIVc-powered Cunliffe-Owen O.A.1 in July 1939
The Cunliffe-Owen failed its airworthiness certification due to excessive takeoff run and poor workmanship. It was performance tested at the A&AEE Boscombe Down in 1939.[4]
After appropriate work, in June 1941 Jim Mollison and an Air Transport Auxiliary crew delivered Cunliffe-Owen OA-1 G-AFMB to Fort Lamy, Chad. The aircraft was fitted out as a personal transport for General De Gaulle. It was later abandoned at RAF Kabrit in Egypt, and burned during VJ-Day celebrations.[5] The one other aircraft landed in Vichy France en route to Fort Lamy[6]
Variants
UB-14 Prototype, powered by Pratt & Whitney engines. Built by Burnelli Company. Destroyed 13 January 1935, without injury to those aboard.
UB-14B Second prototype with modifications. Built by Burnelli Company.
UB-14B Third prototype, modified from second unit. Built by Cunliffe Owen Aircraft in United Kingdom.
Specifications (UB-14B)
Burnelli UB-14 3-view drawing from L'Aerophile February 1936
The Illustrated Encyclopedia of Aircraft (Part Work 1982–1985). London: Orbis Publishing, 1986.
Mason, Tim. The Secret Years: Flight Testing at Boscombe Down, 1939–1945. Crowborough, UK: Hikoki Publications, 2010. ISBN978-1-9021-0914-5.
External links
Wikimedia Commons has media related to Burnelli UB-14.
Photographs of the Burnelli UB-14
August 22, 2023
burnelli, also, known, cunliffe, owen, clyde, clipper, 1930s, american, prototype, lifting, fuselage, airliner, designed, built, vincent, burnelli, 14role, civil, transportmanufacturer, burnellidesigner, vincent, burnellifirst, flight, 1934number, built, 3deve. The Burnelli UB 14 also known as the Cunliffe Owen Clyde Clipper was a 1930s American prototype lifting fuselage airliner designed and built by Vincent Burnelli UB 14Role Civil transportManufacturer BurnelliDesigner Vincent BurnelliFirst flight 1934Number built 3Developed into Burnelli CBY 3 Contents 1 Design and development 2 Operational history 3 Variants 4 Specifications UB 14B 5 See also 6 References 6 1 Notes 6 2 Bibliography 7 External linksDesign and development EditFollowing on from his earlier designs Vincent Burnelli designed a commercial transport version using the lifting fuselage concept Burnelli s designs were based on the idea that an airfoil section fuselage would contribute to the lift generated The Burnelli UB 14 first flew in 1934 the airfoil section fuselage was the centre section of the wing The aircraft had twin tailbooms and a widespan tailplane and elevator fitted with twin fins and rudders The UB 14 had retractable landing gear and was powered by two Pratt amp Whitney radial engines An enclosed cockpit for the crew of two was located on the centre wing s upper surface The cabin held 14 to 18 passengers Operational history EditThe first prototype UB 14 was destroyed in a 1935 accident attributed to faulty maintenance on the aileron control system 1 Burnelli then designed and built an improved version the UB 14B A modified version of the UB 14B design was built under licence in the United Kingdom by Cunliffe Owen Aircraft powered by two Bristol Perseus XIVC radials as the Cunliffe Owen OA 1 2 A contemporary photo shows the mockup of the original UB 14B to be built by Scottish Aviation before bankruptcy This design was to have had streamline inline engines The OA 1 used radial engines In September 1936 Burnelli applied to the CAA for approval to fly a transatlantic flight with Clyde Edward Pangborn as the selected pilot 3 The Perseus XIVc powered Cunliffe Owen O A 1 in July 1939The Cunliffe Owen failed its airworthiness certification due to excessive takeoff run and poor workmanship It was performance tested at the A amp AEE Boscombe Down in 1939 4 After appropriate work in June 1941 Jim Mollison and an Air Transport Auxiliary crew delivered Cunliffe Owen OA 1 G AFMB to Fort Lamy Chad The aircraft was fitted out as a personal transport for General De Gaulle It was later abandoned at RAF Kabrit in Egypt and burned during VJ Day celebrations 5 The one other aircraft landed in Vichy France en route to Fort Lamy 6 Variants EditUB 14 Prototype powered by Pratt amp Whitney engines Built by Burnelli Company Destroyed 13 January 1935 without injury to those aboard UB 14B Second prototype with modifications Built by Burnelli Company UB 14B Third prototype modified from second unit Built by Cunliffe Owen Aircraft in United Kingdom Specifications UB 14B Edit Burnelli UB 14 3 view drawing from L Aerophile February 1936General characteristics Crew two Capacity 14 18 passengers Length 44 ft 0 in 13 41 m Wingspan 71 ft 0 in 21 64 m Height 10 ft 0 in 3 05 m Wing area 686 sq ft 63 73 m2 Empty weight 9 200 lb 4 173 kg Gross weight 17 500 lb 7 938 kg Powerplant 2 Pratt amp Whitney Hornet radial piston engines 750 hp 560 kW eachPerformance Maximum speed 210 mph 383 km h 180 kn Cruise speed 205 mph 330 km h 178 kn Range 1 240 mi 1 996 km 1 080 nmi Service ceiling 22 000 ft 6 705 m Airfoils Fuselage NACA 4323 Exterior wing root NACA 2412 Exterior wing tip NACA 2409 7 See also EditRelated development Burnelli CBY 3 Buscaylet de Monge 7 5Aircraft of comparable role configuration and era Kalinin K 7References EditNotes Edit About Burnelli successor company Retrieved November 28 2015 Fast Air Liner To Compete In Atlantic Race Popular Mechanics May 1937 Ocean hop planned in metal airplane The Washington Post September 17 1936 Mason 2010 p 242 Aeroplane Monthly June 2006 p 95 with two bw plates Joss D A Flying Wing Recollection Flight International 13 May 1965 pp 750 751 Flight magazine 1936 pg 1591 Bibliography Edit The Illustrated Encyclopedia of Aircraft Part Work 1982 1985 London Orbis Publishing 1986 Mason Tim The Secret Years Flight Testing at Boscombe Down 1939 1945 Crowborough UK Hikoki Publications 2010 ISBN 978 1 9021 0914 5 External links Edit Wikimedia Commons has media related to Burnelli UB 14 Photographs of the Burnelli UB 14 Retrieved from https en wikipedia org w index php title Burnelli UB 14 amp oldid 1032402749, wikipedia, wiki, book, books, library,
