Jane's All The World Aircraft 1913
BURGESS. Burgess Co. & Curtis, Marblehead, Mass. Built Wright types under license, also machines of their own.
Model and date. Military Coast defence Naval flying
tractor. hydro. boat.
1912-13. 1913. 1913.
Length.....feet(m.) 37? (8.50) 33-1/3 (9.55) 31 (9.45)
Span.......feet(m.) 34? (10.50) 37? (12) 42 (13.10)
Area...sq.feet(m?.) ... ... ...
total, lbs.(kgs.) ... ... ...
useful,lbs.(kgs.) ... 775 (352) ...
Motor..........h.p. 70 Renault 60 Sturtevant 70 Renault
Speed...m.p.h.(km.) 45 (70) 59 (95) ...
Endurance......hrs. 4? 4? ...
during 1912 ... ... ...
Remarks.-- Lumina fabric. Special clear view Boat 29?feet long.
Single screw. for observation. 2--2 step floats.
Details, 2--1 step mahogany Petrol, 48 gallons.
Aeronautics, and copper floats. Details,
(U.S.A.), Useful weight Aeronautics,
May-June,1912. includes floats. (U.S.A.), May,1913.
Flight, June 28, 1913.
THE BURGESS FLYING BOAT.
IN this country the type of hydro-aeroplane commonly known as the flying boat, has, up to the present, not come in for much prominence, although several designers are giving a good deal of attention to its problems. In France, and more especially in America, however, it is being constantly experimented with. Scarcely a week passes without a new design appearing in the States, where several have proved quite successful, and it may almost be said to be the fashionable type of aircraft.
Our scale drawings this week are of one of this type of craft - the Burgess flying boat - which was designed to meet the requirements of the United States Navy, and passed all its tests quite successfully in the hands of Frank Coffyn. Its hull, power plant, and main planes each form separate units, which can be assembled and taken down in a very short time.
From the plan view of the machine it will be seen that the sides of the boat are parallel from the prow to a point just behind the trailing-edge of the lower main plane. From there they taper to a vertical knife's edge at the stern. Spruce and oak are the woods used in the construction of the framework of the boat, while the planking consists of two layers of mahogany separated by fabric. The boat is built up of two detachable sections, secured to one another by quickly detachable steel fittings. Two seats, arranged in tandem, are situated in the front part, giving the pilot and passenger an excellent view of all that is beneath them. From his seat the pilot controls the machine through the usual Wright-type levers, which consist of an elevating lever and a combination warp and rudder lever.
One of the most interesting points of this machine is the construction of the main planes. While the lower plane is of the usual Burgess biplane section with two main spars, the upper plane is of a modified monoplane section and has only a single tubular spar situated approximately on the centre of pressure. The top plane is staggered forward, bringing the spar nearly in line with the leading edge of the lower plane. The two planes are connected by six vertical struts, and in addition there are six diagonal struts running from the rear spar on the lower plane to the tubular spar on the upper plane. The lower plane is rigid, and only the upper plane is warped for maintaining lateral stability. From a point on the leading edge of the top plane, just in front of a vertical strut, a cable passes round a pulley at the base of the strut, and is carried right across to another pulley at the base of a corresponding strut on the other side of the machine. By this arrangement the trailing edge is kept from dropping down when the machine is at rest. In a similar way the warping-wires, passing round pulleys at the base of the struts and secured to the ribs at a point roughly half-way between the spar and the trailing edge, take the load when in flight. The ribs of the top plane are made a loose fit on the tubular spar, so that when the trailing edge of one section is pulled down the leading edge moves upwards.
As the diagonal struts are hinged in the centre the wings may be folded by undoing the forward warping wire and folding the diagonal struts. The hinged joint between the planes and the vertical struts then allows of the trailing edge of the top plane dropping down. The trailing edge of the lower plane is then raised so that the planes lie fiat against the struts. The wings can then be pulled out of their sockets and shipped as a unit.
Carried on an engine bed constructed of ash members is the 70 h.p. 8-cyl. V-type engine driving a Chauviere propeller. The engine and its supports form a separate detachable unit. Two stout ash struts running from the engine bed to the forward part of the hull prevent the engine from being carried forward owing to its momentum when alighting on the water.
Petrol is carried in two tanks with a total capacity of 42 gallons, and situated in the central part of the boat. A small pump, driven by a miniature propeller, forces the petrol from the main tanks into a service tank above the engine, and it runs to the carburettor by gravity.
At the rear of the boat are mounted the tail planes. The balanced rudder is used for steering, both in the air and on the water. The fixed tail plane and the elevators form a semicircle, with a portion cut away to permit of movement of the rudder. A small vertical fin is interposed between the boat and the fixed tail plane. The weight of the machine - including pilot, passenger, 48 gals, of petrol and 4 gals, of oil - is 2,100 lbs., and its flying speed is 62 miles per hour.
Flight, February 28, 1914.
SOME AMERICAN FLYING BOATS.
The High-Powered Burgess Flying Boat.
Although in its general arrangement the Burgess flying boat is somewhat similar to the Curtiss, it differs very materially from it both constructionally and aerodynamically. One of the most characteristic features of this machine is the method employed for wing bracing. It will be seen from the accompanying sketch that only a single row of struts separate the main planes. It will be remembered that this method of construction is employed in the Breguet biplane, but whereas in the Breguet the necessary stiffness is provided by springs between the spars and the ribs, in the Burgess this is accomplished by cables running from the leading edge and rear spar of the upper plane to the main spar of the lower plane. This construction does not impress one as being particularly strong, especially in a machine with so powerful a motor as the 220 h.p. Anzani engine installed in this machine, but according to reports the makers do not seem to have experienced any trouble from this source. Each wing is built up on a tubular steel spar 3 1/2 ins. in diameter, a wood entering edge hollowed out for lightness, and a thin wood stringer parallel to the spar. The ribs are of wood, and are placed a foot apart. The upper plane is fitted with 5 ft. extensions, and has a span of 41 ft. 4 ins. The span of the lower plane is 33 it. 4 ins., and the gap between the planes is 7 ft.
The 20-cyl. Anzani engine is mounted between the planes, and drives directly a four-bladed propeller through an extension of the crank-shaft supported on ball-bearings on a steel tube structure built up from the hull. Petrol and oil are fed to the engine from two service tanks above the engine, and these are in turn replenished from larger tanks in the hull of the boat. The latter is somewhat similar to the one described in FLIGHT of June 28th, 1913, being of the plain non-stepped type. It is built up of mahogany planking over a framework of oak, and is divided by bulkheads into numerous watertight compartments. In order to facilitate shipment, the boat is built in two sections, which can be easily dismantled and erected. The tail planes are similar to those of the machine already referred to, and they, as well as the heel of the boat, are protected by a small tail skid or skeg mounted under the stern of the boat. The pilot's and passenger's seats are arranged tandem fashion, the pilot occupying the rear seat. As the lower plane has been left uncovered for a distance of about 6 ins. each side of the boat, the pilot has a very good view in a downward as well as all other directions. From the passenger's seat an even better view is obtained. The controls are of the Wright type, consisting of two levers, one of which controls the warp and rudder simultaneously, whilst the other operates the elevator. The general dimensions are :#
Length 30 ft. 6 ins. Gap 7 ft.
Span, upper plane 41 ft. 4 1/2 ins. Weight 2,050 lbs.
Span, lower plane 33 ft. 4 1/2 ins. Speed 75 m.p.h.
Chord 5 ft. 6 ins. Area 373 sq. ft.