MULTIPLE LARGE SCALE WW2 RC BOMBERS – RARE M39B “LIBELLULA” & SAVOIA MARCHETTI – LMA COSFORD – 2016
ANOTHER AMAZING LINE UP AT THIS EVER POPULAR LMA MODEL RC AIRCRAFT SHOW,
INC THE RARE M39B LIBELLULA AND THE RARE SAVIO MARCHETTI THREE ENGINED BOMBER !
CHECK THE REAL AIRCRAFT OUT HERE –
SAVOIA –
LIBELLULA –
HERE ARE THE SPECS ON THE LIBELLULA MODEL –
SOME TIMES A MODEL (AIRCRAFT) COMES ALONG AND JUST STANDS OUT FROM THE CROWD – STEVES VERY RARE MILES M39B IS ONE OF THOSE MODELS !
FIRST FLOWN AT NLMFCW ON 2-8-2009 SHE IS POWERED BY TWO
SAITO 36FG TURNING ZINGER 20X8 PROPS,
WEIGHS IN AT 50ILBS AND TOOK NINE MONTHS TO BUILD TO THE TEST FLIGHT STAGE, MANY MORE HOURS WENT IN TO FININSHING THE MODEL AFTER THE TEST FLIGHT WENT WELL,
CHECK OUT STEVES TEST FLIGHT VIDEO FROM 2009 HERE –
STEVE SENT OVER THIS INFO –
29% (between 1/4 and 1/3rd scale) flying model of the unusual Miles M39b Libellula project. These are the models first few flights…once a basic test program has been completed the model will be stripped down and covered in fabric and painted….Cowls, undercarriage doors and canopy still to be built.
The model is powered by 2 x Saito 36FG with Zinger 20×8’s, weighs 50lbs and took 9 months to complete to this stage.
The Libellula (pronounced ‘Lee-Bell-Loo-Lah’) was designed as carrier borne, high altitude bomber to be powered by three turbojets….to test the theory a five-eighths scale model of the bomber was built and designated M.39B, flying for the first time on 22 July 1943 and proving to be aerodynamically stable. Flight trials were initially on a private basis, but in 1944 the M.39B went to the Royal Aircraft Establishment at Farnborough, where it suffered two accidents. After extensive repairs the work ended and the aircraft was scrapped in 1947.
General characteristics of the real aircraft are –
Crew: 1
Length: 22 ft 2 in (6.76 m)
Wingspan: 37 ft 6 in (11.43 m) rear wing
25 ft (8 m) front wing
Height: 9 ft 3 in (2.82 m)
Wing area: 187.5 sq ft (17.42 m2) rear wing
61.7 sq ft (5.73 m2) forward wing
Aspect ratio:
Front wing 10.1
Rear wing 7.5
Airfoil:
Front wing: NACA 23018 at root, NACA 2412 at tip
Rear wing: NACA 23021 at root, NACA 2415 at tip
Empty weight: 2,405 lb (1,091 kg)
Gross weight: 2,800 lb (1,270 kg)
Fuel capacity: 25 imp gal (113.65 l)
Sweepback on leading edge rear wing 21° 0′ 48″
Powerplant: 2 × de Havilland Gipsy Major IC inline piston engine, 140 hp (100 kW) each
Performance
Maximum speed: 102 mph; 89 kn (164 km/h)
Stall speed: 59 mph (51 kn; 95 km/h) flaps down
Rate of climb: 1,100 ft/min (5.6 m/s)
Wing loading: 11.2 lb/sq ft (55 kg/m2)
Power/mass: 0.1 hp/lb (0.16 kW/kg)
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FILMED AT AN RC MODEL AIRCRAFT SHOW RUN BY THE LMA ( LARGE MODEL ASSOCIATION ) AT RAF COSFORD – WOLVERHAMPTON – SHROPSHIRE / STAFFORDSHIRE – WV7 3EX ON SUNDAY 16 -17 – JULY – 2016,
