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A French LongRange Boat

A French LongRange Boat 134 AIRCRAF T ENGINEERING May, 1936 Th e Three-Engined Braced High-Wing Monoplane Built by the Latécoère Company H E Latécoère 582 long-range naval reconnaissance flying boat was recently constructed at Toulouse b y the Société Industrielle d'Aviation Latécoère and tested on the Lac de Bicarosse, this firm's seaplane base. The new flying boat is a three-engined, braced high-wing monoplane with a central hull and two wing floats. It was built to meet the French Government's specification for long- range naval reconnaissance flying boats. The requirements include : (1) Defensive armament capable of meeting two simultaneous attacks from different directions. (2) Good longitudinal and lateral stability. (3) Ability to maintain direction of flight and ease of control, and (4) Good visibility for both bombing and night reconnaissance operations. Among the marine qualities called for are that the boats shall be suited for: (1) operating independently for long distances over sea ; (2) landing, in case of necessity, on rough water, and manoeuvring with one engine only on smooth water, (3) remaining a t anchor for long periods without suffering from serious deterioration, and, (4), (24,916 lb.), the maximum possible stability, piloted without undue fatigue, even in bad refuelling while a t anchor b y the best available as much of the weight as possible has been weather. Wing flaps reduce the landing speed means. concentrated in the hull, without interfering t o 96 k.p.l. (105 m.p.h.). Th e Latécoère engineers have designed an with the comfort of th e crew, or accessibility to To meet th e requirements for marine qualities, interesting flying boat to meet these require­ their positions. The area of the ailerons, th e Late. 582 has a range of 1,800 kms. ments. The armamen t consists of twin machine 13·77 sq. m. (148 sq. ft.), for 112 sq. m. (1,100 miles). It is also able to maintain guns mounted on a turret in the bows, twin (1,205 sq. ft.) of wing area, give good lateral altitude at 4,500 metres (14,500 ft.) with one guns mounted on a retractable deck turret for stability in spite of the heavy weights, such as engine stopped. Fuel is carried in the floats, rear defence, and a single Lewis gun defending th e floats and engines, carried outboard. All thereb y minimizing the danger of fire and th e tail from below. To give the seaplane, movable surfaces are aerodynamically balanced, facilitating refuelling from small boats. which has an all-up weight of 11,302 kgs. an d it is claimed that the machine is easily Th e wing has a semi-thick (Latécoère 55) section to give good speed, relatively high ceiling and permit the use of deep longerons. I t has a small dihedral and tapers in plan. Th e tips are rounded. It is constructed in lattice-type duralumin spares with wooden ribs, fabric covered. The centre section is carried on a faired superstructure above the deck of the hull. The principal members of the tail surfaces are of metal construction, with tubular and lattice-type spars and wooden ribs, covered with fabric. The ailerons and movable surfaces of the tail are aerodynamically balanced. The hull is built entirely in duralumin on th e longitudinal type of construction with continuous I section keels. The transverse frames have webs in sheet duralumin, reinforced b y triangulated members in the principal frames. The stiffeners are in U section. The hull is divided into nine water-tight compart­ ments. The Late. 582 is fitted with three "Mistral Major " 14 Krs Gnome-Rhône engines of 740 h.p . each mounted in front of the leading edge of the wing. Oil is carried in tanks in th e centre section. PRINCIPAL CHARACTERISTICS. Span .. .. .. .. 28 m. (91 ft.) Length .. .. .. 21·110 m. (69 ft.) Height .. .. .. .. 6·150 m. (20 ft. 3 in.) Maximum chord .. .. 4·950 m. (16ft.3 in.) Area .. .. .. .. 112 sq.m . (1,205 sq. ft.) Maximum beam .. .. 2·520 in. (8 ft. 3 in.) Height of hull .. .. 2·820 m. (9 ft. 3 in.) Length of floats .. .. 5·500 m . (18 ft.) Wing loading .. .. .. 101 kgs./sq.m.(20·7 lb./sq. ft.) Power loading .. .. 5·1 kgs./h.p. (11·25 lb./h.p.) Maximum power .. .. 2,220 h.p. Gross weight .. .. .. 11,302kgs. (24,916 lb.) Tare weight (equipped) .. 6,913 kgs. (15,237 lb.) Weight of fuel .. .. 2,585 kgs. (5,700 lb.) Useful load .. .. .. 1,804 kgs. (3,979 lb.) Maximum speed at 4,000 m. (13,000 ft.) .. .. 273 k.p.h.(170 m.p.h.) Absolute ceiling .. .. 7,900 m. (26,000 ft.) Range .. .. .. .. 1,800 kms.(1,120 miles) http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

A French LongRange Boat

Aircraft Engineering and Aerospace Technology , Volume 8 (5): 1 – May 1, 1936
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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb030044
Publisher site
See Article on Publisher Site

Abstract

134 AIRCRAF T ENGINEERING May, 1936 Th e Three-Engined Braced High-Wing Monoplane Built by the Latécoère Company H E Latécoère 582 long-range naval reconnaissance flying boat was recently constructed at Toulouse b y the Société Industrielle d'Aviation Latécoère and tested on the Lac de Bicarosse, this firm's seaplane base. The new flying boat is a three-engined, braced high-wing monoplane with a central hull and two wing floats. It was built to meet the French Government's specification for long- range naval reconnaissance flying boats. The requirements include : (1) Defensive armament capable of meeting two simultaneous attacks from different directions. (2) Good longitudinal and lateral stability. (3) Ability to maintain direction of flight and ease of control, and (4) Good visibility for both bombing and night reconnaissance operations. Among the marine qualities called for are that the boats shall be suited for: (1) operating independently for long distances over sea ; (2) landing, in case of necessity, on rough water, and manoeuvring with one engine only on smooth water, (3) remaining a t anchor for long periods without suffering from serious deterioration, and, (4), (24,916 lb.), the maximum possible stability, piloted without undue fatigue, even in bad refuelling while a t anchor b y the best available as much of the weight as possible has been weather. Wing flaps reduce the landing speed means. concentrated in the hull, without interfering t o 96 k.p.l. (105 m.p.h.). Th e Latécoère engineers have designed an with the comfort of th e crew, or accessibility to To meet th e requirements for marine qualities, interesting flying boat to meet these require­ their positions. The area of the ailerons, th e Late. 582 has a range of 1,800 kms. ments. The armamen t consists of twin machine 13·77 sq. m. (148 sq. ft.), for 112 sq. m. (1,100 miles). It is also able to maintain guns mounted on a turret in the bows, twin (1,205 sq. ft.) of wing area, give good lateral altitude at 4,500 metres (14,500 ft.) with one guns mounted on a retractable deck turret for stability in spite of the heavy weights, such as engine stopped. Fuel is carried in the floats, rear defence, and a single Lewis gun defending th e floats and engines, carried outboard. All thereb y minimizing the danger of fire and th e tail from below. To give the seaplane, movable surfaces are aerodynamically balanced, facilitating refuelling from small boats. which has an all-up weight of 11,302 kgs. an d it is claimed that the machine is easily Th e wing has a semi-thick (Latécoère 55) section to give good speed, relatively high ceiling and permit the use of deep longerons. I t has a small dihedral and tapers in plan. Th e tips are rounded. It is constructed in lattice-type duralumin spares with wooden ribs, fabric covered. The centre section is carried on a faired superstructure above the deck of the hull. The principal members of the tail surfaces are of metal construction, with tubular and lattice-type spars and wooden ribs, covered with fabric. The ailerons and movable surfaces of the tail are aerodynamically balanced. The hull is built entirely in duralumin on th e longitudinal type of construction with continuous I section keels. The transverse frames have webs in sheet duralumin, reinforced b y triangulated members in the principal frames. The stiffeners are in U section. The hull is divided into nine water-tight compart­ ments. The Late. 582 is fitted with three "Mistral Major " 14 Krs Gnome-Rhône engines of 740 h.p . each mounted in front of the leading edge of the wing. Oil is carried in tanks in th e centre section. PRINCIPAL CHARACTERISTICS. Span .. .. .. .. 28 m. (91 ft.) Length .. .. .. 21·110 m. (69 ft.) Height .. .. .. .. 6·150 m. (20 ft. 3 in.) Maximum chord .. .. 4·950 m. (16ft.3 in.) Area .. .. .. .. 112 sq.m . (1,205 sq. ft.) Maximum beam .. .. 2·520 in. (8 ft. 3 in.) Height of hull .. .. 2·820 m. (9 ft. 3 in.) Length of floats .. .. 5·500 m . (18 ft.) Wing loading .. .. .. 101 kgs./sq.m.(20·7 lb./sq. ft.) Power loading .. .. 5·1 kgs./h.p. (11·25 lb./h.p.) Maximum power .. .. 2,220 h.p. Gross weight .. .. .. 11,302kgs. (24,916 lb.) Tare weight (equipped) .. 6,913 kgs. (15,237 lb.) Weight of fuel .. .. 2,585 kgs. (5,700 lb.) Useful load .. .. .. 1,804 kgs. (3,979 lb.) Maximum speed at 4,000 m. (13,000 ft.) .. .. 273 k.p.h.(170 m.p.h.) Absolute ceiling .. .. 7,900 m. (26,000 ft.) Range .. .. .. .. 1,800 kms.(1,120 miles)

Journal

Aircraft Engineering and Aerospace Technology – Emerald Publishing

Published: May 1, 1936

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