From 1947 to 1952, I served an engineering apprenticeship with Ruston & Hornsby Ltd., a major manufacturer of diesel engines. My last year was spent at the Anchor Street plant, (one of five plants the company had in Lincoln, England) where the newly formed gas turbine division was housed. There, I worked in the tool room, followed by six months in the tool design office. Spending one year as tool designer there after my apprenticeship, I then moved to Canada to work as a tool engineer at the jet engine plant of Avro. Here, the Orenda engines for the CF100 fighter were built, and the huge Iroquois engine was being developed for the new supersonic delta wing fighter, CF105, under development at Avro’s nearby aircraft plant.
In 1946, the Ruston & Hornsby board decided that the future of industrial power would be with the use of jet engines, the first of which had been developed by Frank Whittle and his team during World War 2 and successfully applied to power an aircraft. The company recruited one of Whittle’s top engineers, Bob Fielden, to head up a new division to develop and produce an industrial gas turbine. Introducing kinematic design concepts to enable the product to withstand rapid changes in load and temperature without deformation or failure, and with a start up time goal of one minute for the engine, work was begun. When I was transferred to that plant, prototypes were already under test and tooling preparation was underway for production of the TA turbine. This engine was coupled to a 750 kw generator (approx. 1,000 hp) and was marketed for use in remote arid areas ( eg. Pipeline pumping) where a variety of basic fuels could be used.
Development was not without problems, of course, and I remember one day hearing the gas turbine engine whine, which was commonly in the background of our hearing, suddenly increase in volume and pitch. It kept climbing to everyone’s alarm until suddenly it was stopped by a large explosion. Rushing to the test pit area, we found that one of the turbines had sped out of control until the generator rotor flew apart and seized the drive shaft. The sudden stop resulted in the turbine blade rotors disintegrating, destroying the engine. It turned out that a drain in one of the burner housings had plugged and unspent fuel had accumulated and suddenly ignited, increasing the temperature and speeding up the turbine. Unable to stop it, the test engineers hurriedly ran to safety and had to watch, helplessly, the destruction of the engine. Needless to say, a design modification cured the potential for any repeat.
The TA sold successfully in substantial quantities and today, with the diesel engine production long gone, the gas turbine division is the only part of the once huge company remaining. Larger and larger turbines have been developed over the following fifty years until the largest ones now in production have a capacity for 50 MW (approx. 55,000 hp). First produced under the name Ruston Gas Turbine, the operation is now, after several changes in ownership, the gas turbine division of Siemens, a huge power generation conglomerate.
Production occupies what was formerly the main diesel engine plant in Lincoln.
The Anchor Street plant where it began life was razed some years ago and is now the site of a housing development.