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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

Description: Report presenting an investigation in the 19-foot pressure tunnel to determine the nacelle drag, the cowling-air flow, and the propeller characteristics of a model of a high-performance military airplane. The model is fitted with NACA D(sub S)-type engine cowlings and with propellers embodying NACA 16-series airfoil sections. Results regarding the propeller characteristics, drag and cowling-air flow with the propeller removed, the effect of propeller on flow through cowling, and the influence of cooling requirements on airplane performance are provided.
Date: September 1944
Creator: McHugh, James G. & Pepper, Edward
Partner: UNT Libraries Government Documents Department

Profile-Drag Coefficients of Conventional and Low-Drag Airfoils as Obtained in Flight

Description: "The results of flight investigations of the profile drag of several carefully finished conventional and low-drag airfoils are presented. The results indicated that in all cases lower profile-drag coefficients were obtained with the low-drag than with the conventional airfoils over the range of lift coefficient tested and that, for comparable conditions of lift coefficient and Reynolds number, the low-drag airfoils may have profile-drag coefficients which are at least 27 percent lower than the profile-drag coefficients of the conventional airfoils" (p.1).
Date: May 1944
Creator: Zalovcik, John A.
Partner: UNT Libraries Government Documents Department

The Blackburn "Bluebird" Mark IV (British): All-Metal Biplane

Description: Circular presenting a description of the Blackburn Bluebird Mark IV, which is an all-metal airplane. Details are provided regarding constructional features, the cockpit, the gasoline system, and the flight characteristics.
Date: April 1929
Partner: UNT Libraries Government Documents Department

The Bernard 82 Military Airplane (French): A Long-Range Monoplane

Description: Circular presenting a description of the Bernard 82, which is a scaled-up version of the 80 G.R.; they have similar designs but the 82 has greater span and wing area, deeper chord, higher fuselage, and a thicker wing for the bombs. A description of some flight tests and characteristics is also provided.
Date: June 1934
Partner: UNT Libraries Government Documents Department

The Bernard 20 C.1 (French): A Single-Seat Pursuit Monoplane

Description: Circular presenting a description of the Bernard 20 C.1, which is made of wood and has four main parts: a one-piece wing with a fuselage in the middle, a rear section with the tail surfaces, an engine mount, and a landing gear.
Date: July 1929
Partner: UNT Libraries Government Documents Department

Blériot Combat Monoplane 127 (French)

Description: The 127 is a cantilever monoplane without external bracing. It is designed to accompany and protect bombardment and observation aircraft. Descriptions of the airfoil, fuselage, power plant, landing gears, and armament are provided.
Date: November 1928
Partner: UNT Libraries Government Documents Department

The Blackburn "Sprat": A Training Airplane Convertible Into Landplane or Seaplane

Description: 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.
Date: July 1926
Partner: UNT Libraries Government Documents Department

The Blackburn "Bluebird": Two-Seat Training and Sport Airplane

Description: The Bluebird is a two seat, side by side biplane, designed primarily for training and pleasure flying. A description of the construction and flight characteristics is provided.
Date: June 1927
Partner: UNT Libraries Government Documents Department

The Short "Scylla" Commercial Airplane (British): An All-Metal Biplane

Description: Circular presenting a description of the Short Scylla, which is a 39-passenger landplane with four Bristol Jupiter XF BM engines. A description of the characteristics, blueprints, and photographs of the aircraft are provided.
Date: May 1934
Partner: UNT Libraries Government Documents Department

The Short "Calcutta": First British All-Metal Commercial Seaplane

Description: The Calcutta is a large seaplane, with seating for 16 and a payload of 3,400 pounds. A description of the design, construction features, engine installation, specifications, performance, and photographs are provided.
Date: March 1928
Partner: UNT Libraries Government Documents Department

The Short S.7 "Mussel": A Training Seaplane With 65 Hp. "Cirrus" Engine

Description: Circular presenting a description of the Short "Mussel" S.7, which is designed for use as a light training airplane of robust and simple construction. Information regarding the design, blueprints, and photographs are provided.
Date: May 1926
Partner: UNT Libraries Government Documents Department

Training Airplane "Arado SC 1"

Description: The Arado SC 1 is a staggered overhung biplane. It was build specifically as a training aircraft. A description of the aircraft design, the flight characteristics, and photos of the aircraft are provided.
Date: September 1927
Partner: UNT Libraries Government Documents Department

Training Airplane "Avia B.H. 11."

Description: Circular presenting a description of the Avia B.H. 11, which is a two-seat, low-wing monoplane with a plywood fuselage. The report describes the structural details and flight performance and provides blueprints and photographs of the aircraft.
Date: May 1927
Partner: UNT Libraries Government Documents Department