260. Turbinizing the S-55
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Paper
Abstract
This paper was presented at the Nineteenth National Conference of the Society of Aeronautical Weight Engineers at Los Angeles, California, May 16 – 19, 1960. This paper compares a turbine engine-powered helicopter with its antecedent reciprocating engine-powered helicopter, wherein the fully developed major mechanical components of the reciprocating engine-powered helicopter are used in the new turbine-powered helicopter. This paper shows that not only is considerable weight saved in the turbine engines itself but also in the installation of the engine. These weight savings more than compensate for the weight added by the unique feature of an ‘amphibious’ boat hull and therefore result in increased performance as well as utility. This paper also shows the large economies the operator will enjoy by virtue of high overhaul periods that can be recommended for the mechanical components at the outset, by virtue of their being fully developed on the previous reciprocating engine-powered helicopter. The advantage of rear drive turbine engines for helicopters of greater than 5000 pounds gross weight are outlined.
