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TO say that the Twenty‐fourth S.B.A.C. Show was an unqualified success is perhaps to gild the lily. True there were disappointments— the delay which kept the TSR‐2 on the ground until well after the Show being one—but on the whole the British industry was well pleased with Farnborough week and if future sales could be related to the number of visitors then the order books would be full for many years to come. The total attendance at the Show was well over 400,000—this figure including just under 300,000 members of the public who paid to enter on the last three days of the Show. Those who argued in favour of allowing a two‐year interval between the 1962 Show and this one seem to be fully vindicated, for these attendance figures are an all‐time record. This augurs well for the future for it would appear that potential customers from overseas are still anxious to attend the Farnborough Show, while the public attendance figures indicate that Britain is still air‐minded to a very healthy degree. It is difficult to pick out any one feature or even one aircraft as being really outstanding at Farnborough, but certainly the range of rear‐engined civil jets (HS. 125, BAC One‐Eleven, Trident and VCIQ) served as a re‐minder that British aeronautical engineering prowess is without parallel, while the number of rotorcraft to be seen in the flying display empha‐sized the growing importance of the helicopter in both civil and military operations. As far as the value of Farnborough is concerned, it is certainly a most useful shop window for British aerospace products, and if few new orders are actually received at Farnborough, a very large number are announced— as our ’Orders and Contracts' column on page 332 bears witness. It is not possible to cover every exhibit displayed at the Farnborough Show but the following report describes a wide cross‐section beginning with the exhibits of the major airframe and engine companies.

On show for the first time, a new and unique super lightweight headset to be known as the Minilite will be the main feature of the Amplivox Communications stand at the Paris Salon.

Aeronautical & General Instruments Ltd, will exhibit their R 128 recording cameras, designed to photograph the information displayed on the cathode ray tube of an aircraft's reconnaissance radar.

IN the two years since the last Farnborough Air Show was held by the Society of British Aerospace Companies the aircraft industry has achieved an almost complete metamorphosis from the body blows in the form of major programme cancellations that almost felled it in 1965 to the very healthy position that it holds today.

THE Deutsche Luftfahrtschau, or as it is more generally known, the Hanover Air Show, held every two years by the Bundesverband der Deutschen Luft‐ und Raumfahrtindustrie e.V. (Federal Association of the German Air and Spacecraft Industries). This year's Show will be held from April 26 to May 5 at the Hanover Langenhagen Airport and will be held at the same time as the famous Hanover Fair.

A researcher at Northwestern University's McCormick School of Engineering and Applied Science (Evanston, Illinois) has developed an X‐ray device that is believed to be the first practical means of detecting corrosion hidden beneath the surface of an aircraft's body. When the “virtual core drill” is positioned against the side of an aircraft, a computer screen shows an image of the layers of metal under the surface of the skin. If one or more of those layers are corroded, the amount of corrosion will be recorded on the screen, to an accuracy of 1/1.000 of an inch. The virtual core drill or, more technically, a Compton backscatter depth profilometer, was invented by Larry Lawson, research scientist at the McCormick School's Centre for Quality Engineering and Failure Prevention. The device sends con‐trolled X‐ray beams through the plane's body and detects those X‐rays that are deflected back at an angle near 90° from each layer. Today, whenever corrosion is detected on aircraft, the section must be dismantled, the layers pulled apart, and a micrometer used to measure the thickness. If the corrosion represents more than 10 per cent. the part must be replaced. The virtual core drill can eliminate the downtime and the damage that occurs when aircraft have to be torn apart for inspection. The new device includes a 200lb scan head, which is attached to the plane using feet shaped like suction cups while supported by a flexible boom mounted on a vehicle resembling a fork‐lift truck. The vehicle moves the scan head up and down the aircraft. The drill is equipped with the most sensitive detector known, the sodium iodide scintillator. The drill provides the same kind of information, layer by layer, as would be provided by cutting a plug out of the aircraft with a core drill, except that the aircraft is undamaged. Radiation exposure also is minimal.

THE Twenty‐fourth S.B.A.C. Flying Display and Exhibition to be held at Farnborough during the week Monday,September 7, to Sunday, September 13, promises to be the most interesting ever held. This is in part due to the decision taken in 1962 not to hold an S.B.A.C. Show in the summer of 1963, and partly the result of the effort now being concentrated upon the Concord supersonic airliner project, the TSR‐2 supersonic strike and reconnaissance bomber, the Hawker Siddeley P. 1154 V/STOL fighter, two new research aircraft and a whole range of new transport aircraft. Apart from the models and displays which will be mounted by the major airframe and engine manufacturers demonstrating their own involvement with these projects and programmes, the stands of the Associate Members of the Society of British Aerospace Companies will abound with examples of materials, techniques and equipment which these companies are producing in support of the latest programmes—notably TSR.2 and Concord.

AEM will be exhibiting in Hall 4, Stand G1. The exhibit will illustrate AEM's comprehensive range of accessory repair and overhaul services for electrical, hydraulic, avionic and safety equipment. Farnborough will also be used as the official launch of AEM's Boeing 737 Landing Gear Total Support Pro‐gramme, which encompasses a complete exchange and overhaul service. Copies of Aviation Accessory News will be available on the stand.

Present day aircraft and engines impose conditions which necessitates their structures to be manufactured from ultra high‐strength thermal‐resistant alloys. Future aircraft will need more and more components of such alloys, many of which are new to the industry. Little information on machining techniques for production operations is at present available and it is for this reason that Air Material Command has sponsored a research programme to study the problem.