Drone Aircraft

1959 ◽  
Vol 63 (579) ◽  
pp. 163-174
Author(s):  
H. G. Conway
Keyword(s):  
Control System ◽  
Present Author ◽  
Early History ◽  
Memorial Lecture ◽  
History Of ◽  
Wilbur Wright

It is necessary to start this paper with a disclaimer. Neither the author nor his firm have been concerned with the development of Drone aircraft for more than a few years. Others in the field have more, certainly longer, experience; the choice of the present author is probably because he has been associated with the development of the most ambitious target aircraft so far produced in Britain—the Canberra Mk. 10.The early history of work on automatic flight was discussed by Dr. G. W. H. Gardner in the 46th Wilbur Wright Memorial Lecture*. Credit is due to the Royal Aircraft Establishment for the development of more modern Drones and associated equipment, and indeed, of the whole control system which is now used for Aberporth and in Australia. Much credit is also due to the Australian authorities for the working up of the target service which they now provide at Woomera and for the development of the Jindivik target. The Fairey Aviation Company Ltd. and Flight Refuelling Ltd. have respectively been concerned with the droning of the Fairey Firefly and the Gloster Meteor aircraft which are also used as targets for British missiles.

Practical Aspects of Cascade Wind Tunnel Research

1947 ◽  
Vol 157 (1) ◽  
pp. 482-497 ◽  
Author(s):  
K. W. Todd
Keyword(s):  
Control System ◽  
Wind Tunnel ◽  
High Speed ◽  
Air Flow ◽  
Compressor Blade ◽  
Early History ◽  
Optical Systems ◽  
Two Dimensional ◽  
History Of

This paper deals mainly with the development of a high-speed wind tunnel for the testing of turbine or compressor blade cascades under two-dimensional air flow at velocities up to that of sound. It includes a brief résumé of the early history of the technique, and goes on to enumerate the variables which must be brought under the operator's control. Reference is made to methods of presentation of results, including the use of optical systems for demonstration of shock phenomena. Finally, the control system evolved for operating the high-speed tunnel is described, and some notes are added on the protection of the operators from fatigue induced by monotony and noise.

The Rutherford Memorial Lecture, 1980 - Magnetic oscillations in metals

1982 ◽  
Vol 379 (1776) ◽  
pp. 1-14 ◽  
Keyword(s):  
Electronic Structure ◽  
Early History ◽  
Memorial Lecture ◽  
Metal Crystal ◽  
History Of ◽  
The Subject ◽  
Magnetic Oscillations

Oscillations in the magnetization of a metal crystal were first observed by de Haas and van Alphen in bismuth 50 years ago, and over the years this effect has developed into a powerful tool in the study of the electronic structure of metals. The lecture describes in simple terms how this has come about, with some emphasis on the early history of the subject in which Rutherford was indirectly involved.

scholarly journals The Langley Machine and The Ham-Mondsport Trials

1921 ◽  
Vol 25 (132) ◽  
pp. 620-644
Keyword(s):  
United States ◽  
The United States ◽  
Memorial Lecture ◽  
History Of ◽  
Wilbur Wright

In the discussion following my reading of the Wilbur Wright Memorial Lecture, before the Royal Aeronautical Society, on June 6th, 1916, Lord Northcliffe drew attention to the attempt which had been made to rob the Wright Brothers of the credit of inventing the aeroplane.“ We have not heard much of that in England,” said Lord Northcliffe, “ but ‘ a prophet is not without honour save in his own country,’ and in the United States there have been long and persistent attempts to belittle the work of Wilbur and Orville Wright. I have closely read and followed the history of the hundred years of aeroplane experiments, and I am convinced that the credit of the first flying machine is due to the Wright Brothers, and from the point of practical flying to nobody else. As an Englishman I am in an independent position, and I know that these words of mine will go across the Atlantic, and I believe they will assist in stopping the spread of the insidious suggestion that the Wrights did not invent the aeroplane.”

The First 25 Years of the Bristol Engine Department

1961 ◽  
Vol 65 (605) ◽  
pp. 332-352 ◽  
Author(s):  
Roy Fedden
Keyword(s):  
50Th Anniversary ◽  
Early History ◽  
Memorial Lecture ◽  
History Of ◽  
Engineering Career

Few things have given me greater satisfaction than the invitation to give the Seventh Barnwell Memorial Lecture, and tell the story of the early history of the Bristol Engine Department.The Bristol Aeroplane Company which was founded by that great merchant venturer and pioneer of transport, Sir George White, has just passed its 50th Anniversary. I always look upon the 20 odd years spent with the Bristol Company as among some of the happiest and most stimulating in my engineering career.

Early History of Solid State Ionics

1988 ◽  
Vol 135 ◽  
Author(s):  
Takahashi T.
Keyword(s):  
Solid State ◽  
Present Author ◽  
Room Temperature ◽  
Early History ◽  
Ionic Conductors ◽  
Melting Points ◽  
Solid State Ionics ◽  
History Of ◽  
The 1960S ◽  
Solid State Lonics

AbstractThough the term “Solid State lonics” was named originally by the present author early in the 1960s, solid ionic conductors which are involved in the field of Solid State lonics have been recognized since the mid-nineteenth century. However, room temperature high coniuctivity solid ionic conductors have been studied only after the 1960s. A field of Solid State lonics covers the stuaies of all phenomena of ions in solids, especially solids exhibiting high ionic and electronic-ionic mixed conductivities at fairly low temperatures below their melting points. The applications of these solids are also included in this fiela. Here, only the early history of high conductivity solid ionic conductors which have the longest history in the field of Solid State Ionics is described briefly.

Some early history of replica techniques for electron microscopy

1992 ◽  
Vol 50 (2) ◽  
pp. 1076-1077
Author(s):  
Robert M. Fisher
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Optical Microscope ◽  
Early History ◽  
Bulk Materials ◽  
Thin Sections ◽  
Transmission Electron ◽  
Reflected Light ◽  
History Of ◽  
Electron Microscopes

By 1940, a half dozen or so commercial or home-built transmission electron microscopes were in use for studies of the ultrastructure of matter. These operated at 30-60 kV and most pioneering microscopists were preoccupied with their search for electron transparent substrates to support dispersions of particulates or bacteria for TEM examination and did not contemplate studies of bulk materials. Metallurgist H. Mahl and other physical scientists, accustomed to examining etched, deformed or machined specimens by reflected light in the optical microscope, were also highly motivated to capitalize on the superior resolution of the electron microscope. Mahl originated several methods of preparing thin oxide or lacquer impressions of surfaces that were transparent in his 50 kV TEM. The utility of replication was recognized immediately and many variations on the theme, including two-step negative-positive replicas, soon appeared. Intense development of replica techniques slowed after 1955 but important advances still occur. The availability of 100 kV instruments, advent of thin film methods for metals and ceramics and microtoming of thin sections for biological specimens largely eliminated any need to resort to replicas.

The early history of tuberous sclerosis

1979 ◽  
Vol 115 (11) ◽  
pp. 1317-1319 ◽  
Author(s):  
J. E. Morgan
Keyword(s):  
Tuberous Sclerosis ◽  
Early History ◽  
History Of

New Light on the Early History of the Greater Northwest

2015 ◽  
Author(s):  
Alexander Henry ◽  
David Thompson
Keyword(s):  
Early History ◽  
History Of
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