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Wind-Tunnel Investigation of an NACA 23012 Airfoil with a Handley Page Slat and Two Flap Arrangements
Report presenting an investigation in the 7- by 10-foot wind tunnel of an NACA 23012 airfoil equipped with a Handley Page slat and a slotted and a split flap. The purpose of the investigation was to determine the aerodynamic section characteristics of the airfoil with and without flaps as affected by the location of the Handley Page slat. A range of slat-nose locations was investigated both with and without flaps at a constant slat gap.
Date:
February 1942
Creator:
Schuldenfrei, Marvin J.
System:
The UNT Digital Library
Progress Summary Number 1: Mechanical Properties of Flush-Riveted Joints Submitted by Five Airplane Manufacturers
Summary presenting information on flush-riveted joints for aircraft construction, including the strength, occurrence of defects, and effect of the angle of rivet head. The current tests covers specimens from 15 manufacturers of which 5 series have been completed and are described in this report.
Date:
February 1942
Creator:
Brueggeman, William Charles
System:
The UNT Digital Library
Principles and Methods of Rating and Testing Centrifugal Superchargers
"A discussion of the general principles involved in the rating and testing of centrifugal superchargers, a statement and discussion of present standard methods in rating and testing, and reasons for the adoption of these standards are given" (p. 1).
Date:
February 1942
Creator:
Ellerbrock, Herman H., Jr. & Goldstein, Arthur W.
System:
The UNT Digital Library
Wind-Tunnel Investigation of Carburetor-Air Inlets
Report presenting an investigation of the internal and external airflow characteristics of carburetor-air inlets for liquid-cooled engine installations in the full-scale wind tunnel. Full-scale models of two representative pursuit airplanes were used in the investigation of nine carburetor-air inlets differing in shape, size, and location. Results regarding air flow and ram, drag, and compressibility are provided.
Date:
February 1942
Creator:
Nelson, W. J. & Czarnecki, K. R.
System:
The UNT Digital Library
A theoretical analysis of the effect of aileron inertia and hinge moment on the maximum rolling acceleration of airplanes in abrupt aileron rolls
Report presenting data on the rolling accelerations of airplanes of different types and sizes in abrupt aileron rolls in connection with a number of maneuverability and flying qualities investigations. An analysis was made to determine the relation between the torque applied to the aileron system by the pilot, the motion of the system, and the subsequent rolling motion of the airplane in abrupt aileron roll.
Date:
February 1942
Creator:
Bailey, F. J., Jr. & O'Sullivan, William J.
System:
The UNT Digital Library
An investigation of diffuser-resistance combinations in duct systems
Report presenting an investigation to determine the properties of diffuser-resistance combinations. The work applies to the design of airplane cooling ducts in which air is expanded in front of resistances, such as radiators, oil coolers, intercoolers, or the cylinders of an air-cooled engine.
Date:
February 1942
Creator:
McLellan, Charles H. & Nichols, Mark R.
System:
The UNT Digital Library
Wind-tunnel tests of single- and dual-rotating pusher propellers having from three to eight blades
Report presenting tests of 10-foot-diameter, single- and dual-rotating pusher propellers with three to eight blades that were conducted in the 20-foot propeller research tunnel as a continuation of previous investigations of tractor propellers. The propellers were mounted at the rear end of a streamline body in spinners that covered the hubs and part of the shanks. The effects as compared to previous testing differed only in degree of effect size.
Date:
February 1942
Creator:
Gray, W. H.
System:
The UNT Digital Library