TRAIL - Technical Report Archive and Image Library

Hydrodynamic and Aerodynamic Tests of Four Models of Outboard Floats: (N.A.C.A. Models 51-A, 51-B, 51-C, and 51-D)

Tests of a Contra-Propeller for Aircraft

Scavenging a Piston-Ported Two-Stroke Cylinder

Discharge Characteristics of a Simulated Unit Injection System

Flow observations with tufts and lampblack of the stalling of four typical airfoil sections in the NACA variable-density tunnel

The Pressure Available for Ground Cooling in Front of the Cowling of Air-Cooled Airplane Engines

A method of rapidly estimating the position of the laminar separation point

A general tank test of a model of the hull of the Pem-1 flying boat including a special working chart for the determination of hull performance

N.A.C.A. Stall-Warning Device

Wind-Tunnel Investigation of an N.A.C.A. 23012 Airfoil with a Slotted Flap and Three Types of Auxiliary Flap

The Torsional and Bending Deflection of Full-Scale Aluminum-Alloy Propeller Blades Under Normal Operating Conditions

Tests of Two Full-Scale Propellers With Different Pitch Distributions, at Blade Angles Up to 60 Degrees

Tests of Five Full-Scale Propellers in the Presence of a Radial and a Liquid-Cooled Engine Nacelle, Including Tests of Two Spinners

Annual Report of the National Advisory Committee for Aeronautics (23rd). Administrative Report Including Technical Report Nos. 577 to 611

The Aerodynamic Characteristics of Full-Scale Propellers Having 2, 3, and 4 Blades of Clark Y and R.A.F. 6 Airfoil Sections

The Effect of Surface Irregularities on Wing Drag 1 - Rivets and Spot Welds

The Effect of Surface Irregularities on Wing Drag 2 - Lap Joints

The Effect of Surface Irregularities on Wing Drag 4 - Manufacturing Irregularities

The Effect of Surface Irregularities on Wing Drag 3 - Roughness

Aerodynamic Characteristics of a 4-Engine Monoplane Showing Effects of Enclosing the Engines in the Wing and Comparisons of Tractor- and Pusher-Propeller Arrangements

Correction of Profile-Drag Results From Variable-Density Tunnel and the Effect on the Choice of Wing-Section Thickness

The Conversion of Energy in a Radiator

Full-Scale Wind-Tunnel Investigation of Wing Cooling Ducts, Special Report

Investigation in the 7-By-10 Foot Wind Tunnel of Ducts for Cooling Radiators Within an Airplane Wing, Special Report

On the Theory of Hydrofoils and Planing Surfaces

Comparison of free-spinning wind-tunnel results with corresponding full-scale spin results

Investigation in the 7-by-10 Foot Wind Tunnel of Ducts for Cooling Radiators within an Airplane Wing

Airfoil Theory at Supersonic Speed

Corrugated metal diaphragms for aircraft pressure-measuring instruments

Pressure drop in tank and float vent tubes on diving airplanes

An approximate spin design criterion for monoplanes

Activation of hydrocarbons and the octane number

The effect of the slipstream on an airplane wing

Preliminary report on the characteristics of the NACA 4400R series airfoils

Heat-transfer tests of a steel cylinder barrel with aluminum fins

The drag of airplane radiators with special reference to air heating : comparison of theory and experiment

The design of fins for air-cooled cylinders

The influence of directed air flow on combustion in spark-ignition engine

Cooling on the front of an air-cooled engine cylinder in a conventional engine cowling

Effects of elevator nose shape, gap, balance, and tabs on the aerodynamic characteristics of a horizontal tail surface

The application of basic data on planing surfaces to the design of flying-boat hulls

Free-spinning wind-tunnel tests of a low-wing monoplane with systematic changes in wings and tails IV: effect of center-of-gravity location

Downwash and wake behind plain and flapped airfoils

Design charts for predicting downwash angles and wake characteristics behind plain and flapped wings

Airfoil section characteristics as affected by variations of the Reynolds number

Aircraft rate-of-climb indicators

The aerodynamic characteristics of six full-scale propellers having different airfoil sections

Airfoil section data obtained in the NACA variable-density tunnel as affected by support interference and other corrections

The effect of nacelle-propeller diameter ratio on body interference and on propeller and cooling characteristics

Effect of fuel-air ratio, inlet temperature, and exhaust pressure on detonation

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