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A New French Light Aeroplane

A New French Light Aeroplane December , 1934 AIRCRAFT ENGINEERING 319 Th e Salmson Engine Firm Return to Aeroplane Design wit h a Three-Seater Tourer B y R. J. de Marolles EROPLAN E manufacturers exhibit a the adjustable tailplane; the latter is thus growing tendency towards building their more rigid and secure. own engines; conversely, there are The wing-folding device is specially in­ instances of engine manufacturers starting teresting ; it is fitted with a mechanism which aeroplane construction. This is not exactly automatically compensates for the slack in the tru e of Société Salmson, the well-known control cables when the wings are folded. engine firm, since this concern produced large As soon as the wings are restored to Hying quantities of military machines during the war position, the controls are in working order an d has brought out some new designs since without further attention. The width folded tha t period. Its directors recently decided to is 3·47 m. (11·35 ft.). re-enter the field of aeroplane design with a The wings are fitted with slotted ailerons machine intended to provide for the require­ and camber flaps, resulting in excellent con­ ment s of the private owner. Hence the trol at high angles and landing speed. The Phrygane , as it has been christened after latte r is only 54 k.p.h. (34·6 m.p.h.), which is a particular species of butterfly. This high- excellent for a machine loaded to 10 lb./sq. ft. wing three-seater monoplane, fitted with a The speed range reaches the figure of 3·5, the 135-h.p. Mk. 9 Nc. Salmson engine, is the maximum speed being 195 k.p.h. (121 m.p.h.). forty-sixth design produced by the well-known Many features are incorporated which are engineer, M. Deville, who, after starting his copied from those which motor-car owners are aeronautical career in 1911 with the Clement- accustomed to; for instance, the automatic Bayard firm, later became a member of the starte r is brought into action from the pilot's technical staff of the Breguet-Salmson works seat by pressure on a pedal. The latter, PRINCIPA L CHARACTERISTICS in England. M. Deville is a very practical man incidentally, is provided with an ingenious Spa n 11·7 m . (38·4 ft.) an d he contends that small points which are Lengt h 7·66 m. (25·1 ft.) locking device, preventing the passenger's feet Heigh t 2·36 m. (7·7 ft.) often overlooked by designers of repute are from inadvertently fouling it in flight. The Clionl 2·0 m . (6·55 ft.) worthy of exhaustive study, as they go a long Area 22·5 sq. m. (242·5 sq. ft.) body work and its fittings are made in the works Tar e weight 643 kg. (1,420 lb.) way towards making all the difference between of Autombiles Salmson. The external finish is Payloa d 264 kg. (543 lb.) a perfect engineering job, which is however a Fue l load . .. 12(5 kg. (278 lb.) exceptionally lasting; it is designed to be Useful load 457 kg. (1,009 lb.) nightmare to maintain, and a possibly less washed under pressure with a hose-pipe, a Gross weight 1,100 kg. (2,429 lb.) ambitious machine which is simple and easy to Win g loading 49 kg./sq.m. (10 lb./sq.ft.) feature which will be appreciated in winter Powe r loading 8·2 kg./h.p . (18 lb./h.p.) use or maintain. when mud rapidly accumulates on the fuselage. Power pe r unit area .. .. 6 h.p./sq.m. (0·555 h.p./sq.ft.) Maximu m speed .. .. .. .. 195 k.p.h . (121 m.p.h.) Incidentally, the latter is provided with a large The Phrygane, therefore, bristles with in­ Cruising speed 166 k.p.h. (103 m.p.h.) inspection door allowing insertion of the head genious features which evidence careful atten­ Landin g speed 54 k.p.h. (34·6 m.p.h.) Startin g run 98 m . (107 yds.) t o inspect the structure and controls. All tion to a number of practical details; it has Landin g run 57 in. (63 yds.) cables, which are duplicated, are open to been submitted to very complete tests and Absolut e ceiling 6,500 m. (21,325 ft.) Servic e ceiling 5,800 m. (19,029 ft.) examination throughout their entire length. represents one of the most advanced attempts Clim b to 360 m. (1,181 ft.) 2 min . 10 sec. There is a comprehensive tool-roll supplied a t the ideal machine for the private owner. Rang e 1,000 km. (622 miles) with the machine. To reduce maintenance, The latter, unless he happens to be a real speed control-surface hinges are provided with special enthusiast, appears to prefer the high-wing bearings which do not need lubrication. monoplane, but often complains of a too restricted field of vision, particularly above and Constructionally, the wing structure com­ rearwards, which is particularly disastrous when prises two box-section spars and normal ribs, flying near busy aerodromes, where the air is th e whole being made of wood with fabric ap t to be somewhat crowded. The machine covering. The bracing is by Vee struts, the is provided with large windows extending well apex of which runs to the bottom of the fuselage behind the cabin and the entire roof is covered a t a point just below the rear spar. The part with transparent Rhodoid. There are three of the wings aft of the latter is a separate doors, with horizontal hinges at the top ; a structure hinged to allow for the folding. locking device enables these to be kept opened, The fuselage is of mixed construction, the thus facilitating entrance or exit while on the front part being made of welded steel tubes, ground and making parachute jumps in case while the rear portion is a normal wooden of emergency particularly easy. structure with fabric covering. The 9-cylinder The three seats are very "modernistic," Salmson engine is installed on a welded being of chromium-plated steel tube furnished mounting secured to the fireproof bulkhead through flexible connections. The front part with cloth cushions to match the interior of the fuselage is metal-covered, with particu­ decoration. A special attache case fits under each seat, where it is securely held by safety larly large inspection panels. A ring cowling is straps. fitted round the cylinders, while the exhaust is carried away through a remarkably efficient The controls are operated by a centrally silencer discharging through a pipe extending disposed column, fitted with a particularly under the fuselage well behind the cabin. The ingenious device in the form of an adjustable petrol tanks are housed inside the wings; their handle, which allows either of the occupants of the front seats to pilot the machine with capacity is 164 lit. (36·2 gals.). Metal-armoured flexible piping is used throughout. th e maximum of comfort. Direction of control is by pedals, a hand lever operating the differ­ The tail surfaces are of all wood construction ential brakes. Another set of levers con­ with fabric covering, except for the fin which is veniently placed controls the camber flaps built of welded steel tubes. and the trimming inset flap mounted on the The landing gear is of orthodox design, elevators. The aeroplane can be flown hands comprising two independent tripods with elastic off with any load without recourse to the legs and faired low-pressure tyred wheels. A somewhat heavy and complicated system of small swivelling tail wheel is fitted. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

A New French Light Aeroplane

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb029880
Publisher site
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Abstract

December , 1934 AIRCRAFT ENGINEERING 319 Th e Salmson Engine Firm Return to Aeroplane Design wit h a Three-Seater Tourer B y R. J. de Marolles EROPLAN E manufacturers exhibit a the adjustable tailplane; the latter is thus growing tendency towards building their more rigid and secure. own engines; conversely, there are The wing-folding device is specially in­ instances of engine manufacturers starting teresting ; it is fitted with a mechanism which aeroplane construction. This is not exactly automatically compensates for the slack in the tru e of Société Salmson, the well-known control cables when the wings are folded. engine firm, since this concern produced large As soon as the wings are restored to Hying quantities of military machines during the war position, the controls are in working order an d has brought out some new designs since without further attention. The width folded tha t period. Its directors recently decided to is 3·47 m. (11·35 ft.). re-enter the field of aeroplane design with a The wings are fitted with slotted ailerons machine intended to provide for the require­ and camber flaps, resulting in excellent con­ ment s of the private owner. Hence the trol at high angles and landing speed. The Phrygane , as it has been christened after latte r is only 54 k.p.h. (34·6 m.p.h.), which is a particular species of butterfly. This high- excellent for a machine loaded to 10 lb./sq. ft. wing three-seater monoplane, fitted with a The speed range reaches the figure of 3·5, the 135-h.p. Mk. 9 Nc. Salmson engine, is the maximum speed being 195 k.p.h. (121 m.p.h.). forty-sixth design produced by the well-known Many features are incorporated which are engineer, M. Deville, who, after starting his copied from those which motor-car owners are aeronautical career in 1911 with the Clement- accustomed to; for instance, the automatic Bayard firm, later became a member of the starte r is brought into action from the pilot's technical staff of the Breguet-Salmson works seat by pressure on a pedal. The latter, PRINCIPA L CHARACTERISTICS in England. M. Deville is a very practical man incidentally, is provided with an ingenious Spa n 11·7 m . (38·4 ft.) an d he contends that small points which are Lengt h 7·66 m. (25·1 ft.) locking device, preventing the passenger's feet Heigh t 2·36 m. (7·7 ft.) often overlooked by designers of repute are from inadvertently fouling it in flight. The Clionl 2·0 m . (6·55 ft.) worthy of exhaustive study, as they go a long Area 22·5 sq. m. (242·5 sq. ft.) body work and its fittings are made in the works Tar e weight 643 kg. (1,420 lb.) way towards making all the difference between of Autombiles Salmson. The external finish is Payloa d 264 kg. (543 lb.) a perfect engineering job, which is however a Fue l load . .. 12(5 kg. (278 lb.) exceptionally lasting; it is designed to be Useful load 457 kg. (1,009 lb.) nightmare to maintain, and a possibly less washed under pressure with a hose-pipe, a Gross weight 1,100 kg. (2,429 lb.) ambitious machine which is simple and easy to Win g loading 49 kg./sq.m. (10 lb./sq.ft.) feature which will be appreciated in winter Powe r loading 8·2 kg./h.p . (18 lb./h.p.) use or maintain. when mud rapidly accumulates on the fuselage. Power pe r unit area .. .. 6 h.p./sq.m. (0·555 h.p./sq.ft.) Maximu m speed .. .. .. .. 195 k.p.h . (121 m.p.h.) Incidentally, the latter is provided with a large The Phrygane, therefore, bristles with in­ Cruising speed 166 k.p.h. (103 m.p.h.) inspection door allowing insertion of the head genious features which evidence careful atten­ Landin g speed 54 k.p.h. (34·6 m.p.h.) Startin g run 98 m . (107 yds.) t o inspect the structure and controls. All tion to a number of practical details; it has Landin g run 57 in. (63 yds.) cables, which are duplicated, are open to been submitted to very complete tests and Absolut e ceiling 6,500 m. (21,325 ft.) Servic e ceiling 5,800 m. (19,029 ft.) examination throughout their entire length. represents one of the most advanced attempts Clim b to 360 m. (1,181 ft.) 2 min . 10 sec. There is a comprehensive tool-roll supplied a t the ideal machine for the private owner. Rang e 1,000 km. (622 miles) with the machine. To reduce maintenance, The latter, unless he happens to be a real speed control-surface hinges are provided with special enthusiast, appears to prefer the high-wing bearings which do not need lubrication. monoplane, but often complains of a too restricted field of vision, particularly above and Constructionally, the wing structure com­ rearwards, which is particularly disastrous when prises two box-section spars and normal ribs, flying near busy aerodromes, where the air is th e whole being made of wood with fabric ap t to be somewhat crowded. The machine covering. The bracing is by Vee struts, the is provided with large windows extending well apex of which runs to the bottom of the fuselage behind the cabin and the entire roof is covered a t a point just below the rear spar. The part with transparent Rhodoid. There are three of the wings aft of the latter is a separate doors, with horizontal hinges at the top ; a structure hinged to allow for the folding. locking device enables these to be kept opened, The fuselage is of mixed construction, the thus facilitating entrance or exit while on the front part being made of welded steel tubes, ground and making parachute jumps in case while the rear portion is a normal wooden of emergency particularly easy. structure with fabric covering. The 9-cylinder The three seats are very "modernistic," Salmson engine is installed on a welded being of chromium-plated steel tube furnished mounting secured to the fireproof bulkhead through flexible connections. The front part with cloth cushions to match the interior of the fuselage is metal-covered, with particu­ decoration. A special attache case fits under each seat, where it is securely held by safety larly large inspection panels. A ring cowling is straps. fitted round the cylinders, while the exhaust is carried away through a remarkably efficient The controls are operated by a centrally silencer discharging through a pipe extending disposed column, fitted with a particularly under the fuselage well behind the cabin. The ingenious device in the form of an adjustable petrol tanks are housed inside the wings; their handle, which allows either of the occupants of the front seats to pilot the machine with capacity is 164 lit. (36·2 gals.). Metal-armoured flexible piping is used throughout. th e maximum of comfort. Direction of control is by pedals, a hand lever operating the differ­ The tail surfaces are of all wood construction ential brakes. Another set of levers con­ with fabric covering, except for the fin which is veniently placed controls the camber flaps built of welded steel tubes. and the trimming inset flap mounted on the The landing gear is of orthodox design, elevators. The aeroplane can be flown hands comprising two independent tripods with elastic off with any load without recourse to the legs and faired low-pressure tyred wheels. A somewhat heavy and complicated system of small swivelling tail wheel is fitted.

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: Dec 1, 1934

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