Technical Report Archive and Image Library (TRAIL) - Browse

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NACA Mach number indicator for use in high-speed tunnels
No Description Available.
On the flow of a compressible fluid by the hodography method I : unification and extension of present-day results
No Description Available.
On the flow of a compressible fluid by the hodography method II : fundamental set of particular flow solutions of the Chaplygin differential equation
No Description Available.
Performance of an exhaust-gas "blowdown" turbine on a nine-cylinder radial engine
No Description Available.
Experiments on drag of revolving disks, cylinders and streamline rods at high speeds
No Description Available.
The propeller and cooling-air-flow characteristics of a twin-engine airplane model equipped with NACA D(sub S)-type cowlings and with propellers of NACA 16-series airfoil sections
No Description Available.
NACA Investigation of a Jet-Propulsion System Applicable to Flight
Following a brief history of the NACA investigation of jet-propulsion, a discussion is given of the general investigation and analyses leading to the construction of the jet-propulsion ground-test mock-up. The results of burning experiments and of test measurements designed to allow quantitative flight-performance predictions of the system are presented and correlated with calculations. These calculations are then used to determine the performance of the system on the ground and in the air at various speeds and altitudes under various burning conditions. The application of the system to an experimental airplane is described and some performance predictions for this airplane are made. It was found that the main fire could be restricted to an intense, small, and short annular blue flame burning steadily and under control in the intended combustion space. With these readily obtainable combustion conditions, the combustion chamber the nozzle walls and the surrounding structure could be maintained at normal temperatures. The system investigated was found to be capable of burning one-half the intake air up the fuel rates of 3 pounds per second. Calculations were shown to agree well with experiment. It was concluded that the basic features of the jet-propulsion system investigation in the ground-test mock-up were sufficiently developed to be considered applicable to flight installation. Calculations indicated that an airplane utilizing this jet-propulsion system would have unusual capabilities in the high-speed range above the speeds of conventional aircraft and would, in addition, have moderately long cruising ranges if only the engine were used.
Focke-Wulf F 19a "Ente" commercial airplane (German) : a tail-first high-wing monoplane
No Description Available.
The Messerschmidt M.29 touring airplane (German) : a two-seat cantilever monoplane
No Description Available.
The "Comte A.C. 3" military airplane (Swiss) : a high-wing semicantilever monoplane
No Description Available.
The Mono-Spar light airplane (British) : a twin-engined low-wing cabin monoplane
No Description Available.
The Liore Olivier "Le 0.240" commercial seaplane (French) : a high-wing cantilever monoplane
No Description Available.
The Loire 11 colonial military airplane (French) : a high-wing semicantilever all-metal monoplane
No Description Available.
The De Havilland "Comet" long-range airplane (British) : a low-wing cantilever monoplane
No Description Available.
The Westland "Wallace" general-purpose airplane (British) : an all-metal biplane
No Description Available.
The Latecoere 521 "Lieutenant De Vaisseau Paris" commercial flying boat (French) : a two-deck six-engine semicantilever sesquiplane
No Description Available.
Fokker F.XX commercial airplane (Dutch) : a high-wing cantilever monoplane
No Description Available.
The Dyle and Bacalan "D.B. 80" day mail airplane (French) : an all-metal high-wing monoplane
No Description Available.
The Wibault 280 T.10 commercial airplane (French) : an all-metal, cantilever, low-wing monoplane
No Description Available.
The Comper "Mouse" commercial airplane (British) : a three-seat cabin low-wing monoplane
No Description Available.
The Hanriot-Biche 110 C1 airplane (French) : an all-metal low-wing pursuit monoplane
No Description Available.
The Short "Scylla" commercial airplane (British) : an all-metal biplane
No Description Available.
Macchi M. 39 Seaplane: Single-Seat Racer with an 800 HP. Fiat "A-S2" Engine
The M. 39 was designed by Castoldi to compete in the Schneider Cup Race of 1926 (Norfolk, VA). It is a monoplane with engine mounted in the fuselage, resting on two wing and hull mounted floats.
Dornier "Superwal" commercial seaplane with : two Rolls-Royce "Condor" 600 HP. engines
In November 1926, an exhibition flight of the Dornier giant flying boat was made for 3/4 of an hour. It was a larger version of the Dornier Wal, with a stepped hull, and wing stubs for lateral stability. It has a range of 1200 miles and is outfitted for baggage and 8 passengers.
The Blackburn "Sprat": A Training Airplane Convertible into Landplane or Seaplane
The Sprat is similar the Blackburn Swift and Dart models but is designed as a trainer. It is powered with a smaller 275 HP Rolls-Royce Falcon engine. It is a 2 seat biplane with equal sized upper and lower wings. It can quickly convert from a land to a seaplane.
The new De Havilland commercial airplane : the D.H. 66 with three Bristol "Jupiter" engines
The D.H. 66, constructed at Stag Lane Works of the De Haviland Aircraft Company built for Imperial Airways, Ltd. The fuselage has an all steel construction while the wings are made with box spars of wood and spruce ribs. It has a biplane tail and encloses the stabilizer trimming gear in a casing which serves to streamline the rear portion of the fuselage, but which is not part of the main structure. It weighs 9060 lbs. empty and 2500 lbs. after fueling with a total loaded weight of 14,700 lbs.
Farman Monoplane F.170 : Commercial Airplane with One 500 HP. Farman Engine
The F.170's engine has won world endurance tests in 1924 and in 1925. It has a semi-thick wing, rigidly braced by oblique struts. This wing is embedded in the top of the fuselage and measures 16.1 by 3.6 meters. The F.170 has a passenger compartment seating eight.
Heinkel airplane H.D. 39 for carrying newspapers
No Description Available.
German training airplane, Arado "Ar. S.I."
No Description Available.
The Avro "Avian" Airplane : 65 HP. Armstrong-Siddeley "Genet" engine
The Avro Avian, designed by Mr. Chadwick of A.V. Roe & Co., Ltd. has a very low structural weight (estimated at 750 lbs. empty) but with sufficient structural integrity to be eligible of an "Aerobatics" certificate from the British Air Ministry. It can be configured as a monoplane, or a biplane with seaplane floats. It is designed for economical production.
The Bristol "Badminton" Airplane
The Bristol Badminton, Type 99 airplane has a radial aircooled engine (a Bristol Jupiter 9 cylinder 450 HP.) and three fuel tanks. It is a single seat biplane weighing 1,840 lbs. empty and 2,460 lbs. loaded.
The Farman Commercial Airplane "Jabiru."
No Description Available.
The "Dornier Mercury" commercial airplane with B.M.W. VI 600 HP. engine
The Dornier Mercury (Merkur) is an outgrowth of the Dornier Komet. It is designed as a passenger aircraft with the Alpine routes in mind. Its fuselage is made of steel for high stressed parts and duraluminum for all others. It can also be outfitted as a seaplane.
Rohrbach all metal commercial airplane RO VIII "Roland"
With three 230 HP. engines and all metal construction, the Roland, Rohrbach VIII is a passenger aircraft with seating for two pilots and 10 passengers.
The Rohrbach "ROBBE" RO VII seaplane : military or commercial
The RO VII is a monoplane with two 230 BMW engines mounted on top of the wing. It seats 4 passengers with room for a pilot and a mechanic in the cockpit.
The Parnall "Imp": A New British Light Airplane
Harold Bolas, designer, wished the Imp to have two fundamental aims; simplicity and a good view. It is constructed without wire bracing.
The Avro "Avian III" Airplane (British)
The Avro Avian has a lift capacity of 828 lbs (including pilot). It is equipped with the Mark II A.D.C. Cirrus engine.
The "Gloster IV" Seaplane (British)
No Description Available.
The Boulton and Paul "Sidestrand I" bomber airplane (British)
The Sidestrand I is a twin engine bomber that has gone into production for Royal Air Force Squadrons. It seats three, and can carry a load in excess of 3500 lbs.
Heinkel H.E. 50 commercial seaplane : winner of the 1926 German Seaplane Contest at Warnemunde
No Description Available.
The Focke-Wulf "G.L. 18" : twin-engine 150 HP. commercial airplane
A small commercial airplane, the Focke-Wulf G.L. 18 has two engines (75 HP. Junker). It is a monoplane and the engines are wing mounted.
The Rohrbach "ROCCO:" seaplane : new German commercial seaplane with two Rolls-Royce "Condor" engines
The Rocco is a has a monoplane wing surmounted by two engines. It's flat sided narrow beam hull is steadied when on the water by 2 outboard wing floats.
Westland "Wapiti", British
The Widgeon Wapiti is a military aircraft suitable for a variety of roles. It is a normal tow-bay wire-braced biplane and can be powered by a variety of the Bristol Jupiter series engines.
The De Havilland D.H. 75 "Hawk Moth" (British): Cabin Monoplane
The Hawk Moth is designed as a passenger aircraft with comfort in mind. It seats 4. The tail is of metal construction, while the wings are of wood. It has a total loaded weight of 3500 lbs.
The Gloster "Goldfinch" (British) : Single-Seat Fighter
The Goldfinch is equipped with the Bristol Jupiter Mark Vii engine. It is the all metal version of the Gloster Gamecock used by the R.A.F.
The Sikorsky Twin Engined Amphibian, Type S-38, Model 1928
The S-38, model 28 is a nine passenger Sesquiplane powered by two Pratt and Whitney Wasp 410 HP engines and is intended for routes where the ability to take off and land from both land and water is essential.
Savoia Marchetti "S 64" Airplane
The S 64 is a large monoplane with an aspect ratio of 7. It has a cantilever wing made of a single piece, entirely of wood. The wing has three spars with a covering of plywood. The engine is mounted high over the wing's center. It was designed for long distance transatlantic flights.
Supermarine S.5 Seaplane (British) : Winner of the 1927 Schneider Cup Race
The S.5 is equipped with Napier Lion racing engine, all duralumin floats and has a top speed in excess of 300 M.P.H.
The Parnall "Pipit" (British) : A Single-Seat Ship's Fighter
The Parnall Pipit is a single-seat ships fighter equipped with a Rolls Royce "F" type engine and armed with two synchronized Vickers guns. It can also be configured to carry bombs under the wings.
The "K 47" of the A.B. Flygindustri : An Armored Pursuit Monoplane
No Description Available.