In Partnership With

March 16, 1929

AERONAUTICAL ENGINEERING SECTION

Welding Aluminum and Its Alloys

AERONAUTICAL ENGINEERING SECTION

Fundamentals of Airplane Fitting Design

Concerning the Burdens and Costs

XLXLI

AERONAUTICAL ENGINEERING SECTION

Welding Aluminum and Its Alloys

THE purpose of this paper is to supply information on the welding of aluminum and its alloys. A weld as defined by the American Welding Society is “The localized intimate union of metal parts in the plastic or plastic and molten states with the application of mechanical pressure or blows, and in the molten or molten and vapor states without the application of mechanical pressure or blows.”

XXIVXXXV

AERONAUTICAL ENGINEERING SECTION

Fundamentals of Airplane Fitting Design

FITTINGS form a much more important part of airplane design than a casual consideration would tend to reveal and deserve more attention than is usually accorded them. They are nearly always in such positions that failure of one would wreck the airplane.

804805

Concerning the Burdens and Costs

WE have seen that the distribution of overhead through a blanket percentage, or burden on bare cost, may lead to large errors; that results are more correct when overheads on materials, labor, selling and administration are handled separately, and that a still closer approximation is reached when departmental divisions and distributions of overhead are made.

802803

Systematizing An Aviation School

THROUGH three years of operation in the flying school business, the Embry-Riddle Co., Lunken Airport, Cincinnati, O., has realized the imperative need of a rigid system of instruction both in ground school and flying school. Without such a system the school easily slips into the haphazard, and the airport gathers a crowd of loafers, most of them unable to take training, but willing to sit for hours and watch planes fly.

798799

Spark Plug Problems

The Relation of Heat Characteristics to Operating Conditions

800801

The "Cabinaire" Biplane

Four Place Cabin Craft Produced by Paramount Aircraft Corp. Is Designed Around the Warner “Scarab" Engine

862863

Patents Issued

Patent No. 1,700,948—Internal-Combustion Engine, John Scott Oliver, London, England. One Claim, An internal combustion engine having a piston and a cylinder, a rotary sleeve valve, two sets of inlet and exhaust ports in the cylinder ports in said sleeve valve for registering alternately with the inlet and exhaust ports of each set, the first set of ports extending from a point at or near the head of the cylinder to a point intermediate in the stroke of the piston and being arranged to be opened and closed at the correct times by the movement of the sleeve alone while the second set of ports subtend the a wider angle than said first set of ports and extend from a point intermediate in the stroke of the piston to a point at or near the bottom of the stroke of the piston and are arranged to be opened and closed at the correct times by the movement of the piston in conjunction with the movement of the sleeve.
812813

Large Finance Firm Organized

Lehman and Harriman Interests Back “The Aviation Corporation"

814815

Briefly—

Purchase of Curtiss Field, L. I., by the Seth Low interests which recently acquired Roosevelt Field, L. L, has been reported here. Plans to join the two contiguous fields and development of the tract into one large airport were included in the report.
814815

Personnel

GEORGE C. WESTERVELT, retired Navy captain associated with aviation for 14 yr., has been appointed manager of CurtissCaproni, Inc. During the war, Mr. Westervelt was in charge of the construction and inspection of naval aircraft in this country.
March 91929 March 231929