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Aviation History
1948
1948 - 1321.PDF
AUGUST ICJTH, 1948 FLIGHT 217 Power-Plant Production in Sweden . . availability of certain special machine tools. In order to keep the team together in readiness for future large-scale aircraft engine production, interim constructional work has been undertaken in the form of a 100 h.p. commercial diesel engine, and three types of printing presses. A visitor to the attractive factory alongside the SAAB works cannot help but be surprised by the equipment and potential scale of production. A pick of the world's machine tools are laid out in a most efficient manner in the large, airy shops. During an interview on the occasion of our recent visit, to Trollhattan, the company's president, Mr. Gunnar Engellar, explained much of the foregoing, and also talked of his company's small horizontally-opposed four-cylinder engine, which has been developed and type- tested. It is of particularly attractive design, gives 150 b.h.p., and was first exhibited at the Paris Show of November, 1946. It was originally intended forJsfee Safir but was not ready in time. Should Sufficient Two examples of early Lysholm-designed gas-turbine units. The turbojet (above) is a wing installation suggested by Milo A.B., and the turboprop (below) is a Ljungstrb'ms Angturbfri proposal. demand arise, the unit could now be put into medium- scale production at short notice. Mention was also made of a high-powered 28-cylinder radial air-cooled design study which has, however, been superseded by gas-turbine projects. Later the chief engineer, Mr. G. Gudmundson, personally conducted a tour of the works, which included an examina- tion of the stripped type-test 150 h.p. engine (the components were seen to have stood up to the run satisfactorily), of units for gas-turbine designs, machining operations on the first Goblin components, and afterwards a tour of the several test beds and aerodynamic depart- ments in which gas-turbine research is in progress. As one passes through the production depart- ments, the first components of Goblin engines may be seen filtering through, and delivery of the first unit is scheduled for late autumn. To start with, impeller forgings will be sent from England, part-machined. The special milling machines required for the job are already over- due for delivery to Sweden. SAAB will pro- duce the sheet-metal components in their large presses. Eventually, however, the whole unit will be produced by Svenska Flygmotor. r't In the gear-grinding department of the Flygmotor machine shop. B 23 Special machinery is installed for machining Goblin impellers. It is noteworthy that machines already installed will permit all threads for the Goblin to be rolled. The company designed gas-turbine beds some time ago, and later, a comparison with those used by the de Havilland company revealed a remarkable similarity of ideas. The The 150 h.p. four- cylinder engine designed by Flyg- motor. After pas- sing its type test it stripped well. designs have now been translated into bricks and mortar, and a British Goblin is running on them to give experience. The Swedes are not a large nation, and therefore produc- tion orders cannot be expected to match those placed in some other countries. The productive capacity and high standard of equipment of their aircraft engine factory is, therefore, the more remarkable. - M.A.S.
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