Aircraft Engineering and Aerospace Technology: Volume 32 Issue 6

On the Lighter Side

DURING the last month the troubled air that accompanies the progress of British aviation reverberated again to the dignified but demanding voices of the Royal Aero Club, the…

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

H.L. Price

An examination is made of the way in which the ground resonance properties of a helicopter depend on the fuselage damping, blade damping, drag hinge offset, inter‐blade spring…

Complex Stress Creep Fracture of an Aluminium Alloy: An Investigation Conducted at an Elevated Temperature

A.E. Johnson, J. Henderson, Y.D. Mathur

The purpose of the investigation was to examine the tertiary creep and the creep fracture characteristics of an aluminium alloy to specification B.S.2L42, subject to complex…

Dynamic Pressure Feedback: Controlled Damping by Use of the Dowty Moog Valve

Electrohydraulic servos have been widely applied to the task of precisely positioning heavy loads. Common examples from the military field are radar antenna and rocket engine…

The Library Shelf

H.L.P., J.C.

The publication in English of Gantmacher's book ‘The Theory of Matrices’ is of particular interest in that it reveals to us the standard attained by a Russian textbook in that…

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…

Auxiliary Equipment

A self‐scaling quick disconnect coupling for oxygen supply to aircrew members has been developed by The Hymatic Engineering Co. Ltd., Redditch, Worcestershire, for the ministry of…

Month in the Patent Office

In a helicopter rotor comprising a propulsion unit mounted at the tip of each blade, each unit including rotating masses subject to gyroscopic reaction forces tending to alter the…

U.S. Patent Specifications

A resonance combustion apparatus comprises a combustion chamber provided with an inlet and outlet and a uni‐directional valve provided only in the inlet, the uni‐directional valve…