Aircraft Engineering and Aerospace Technology: Volume 32 Issue 7

Sound Reflexions

ON June 1 the Minister of Aviation held a meeting of airline representatives and engine and airframe manufacturers for the purpose of discussing the problem of aircraft noise. The…

Sandwich Construction: Correlation and Extension of Existing Theory of Flat Panels Subjected to Lengthwise Compression

W.G. Heath

An extensive bibliography exists on sandwich construction; it is felt, however, that few of the available papers are readily adaptable for use in aircraft design offices. This…

Aeroelastic Criterion for Leading Edge Stiffness: Determination of the Divergence Stiffness of a Supersonic Lifting Surface Subjected to Kinetic Heating

M.J. Wooldridge

A composite chart is presented to facilitate the rapid determination of a critical divergence stiffness for a straight or swept leading edge of a lifting surface. The aeroelastic…

The Avoidance of Ground Resonance: Exact Stability Criteria for Helicopters on Isotropic Supports

H.L. Price

(i) The Position of the Vertical Asymptotes Vertical asymptotes of the (X, y) curve are given by those values of X which make y infinite. Taking the curve in the form given by Eq…

S.A.E. National Aeronautic Meeting: Summaries of a Selection of the Papers Presented in New York, N.Y., U.S.A., on April 5–8, 1960

High energy forming has supplemented the use of drop hammers, hydro‐presses and brake presses, and has the advantage of forming high‐strength alloys at rates of 100 ft./sec…

Panel Flutter and Divergence Criteria Design Guide for Flat Unbuckled Sheets

D.J. Johns

THE outer surfaces of aircraft are often constructed of thin sheet panels attached to a ‘rigid’ inner framework. Acting on such panels are the lateral forces due to air pressure…

Ground Testing of Airborne Equipment: High Acceleration Rate Test Facility for Small Components

SOME of the delicate components of airborne equipment have to withstand very high accelerations during certain phases of flight. There are also g‐operated devices which must react…

The Library Shelf

A.D.B., D.K., J.C., G.J.H., R.M.L.M.

Although the subject of this book has been much to the fore during recent years, the science and engineering associated with it have been little known by those not intimately in…

Research Reports and Memoranda

Under this heading are published regularly abstracts of all Reports and Memoranda of the Aeronautical Research Council, Reports and Technical Memoranda of the United States…

New Materials

The MSR (Magnesium‐Silver‐Rare Earth) alloys are primarily high‐strength materials having proof stress values directly comparable with strong aluminium alloys which are 50 per…

Auxiliary Equipment

More than sixty actual parachute drops have been made in tests near the Salton Sea, U.S.A., to demonstrate the possibilities of a new seat system, developed by engineers of North…

Tools for the Workshop

The design of a fully‐automatic fusion welder of the boom manipulator type has been announced by Sciaky Bros. Inc., 4915 W. 67th Street, Chicago 38, Ill., U.S.A. Two were…

Month in the Patent Office

In an aircraft power plant consisting of a turbo‐jet engine located concentrically within a ram‐jet 1, means is provided for deflecting the gases flowing from the ram‐jet and the…

U.S. Patent Specifications

An aircraft has a main lifting surface. This surface has a resultant lift force with a relatively forward position at subsonic velocities and a relatively rear‐ward position at…