Month in the Patent Office

Abstract

A blade of aerofoil section, for example a blade for a rotary wing aircraft or an aircraft propeller blade, is formed of a plurality of laminations 14 of longitudinally‐extending resin‐impregnated fibres arranged one on top of the other, the laminations being spread apart at one end as shown in FIG. 3 and a cross‐piece 15 of resin‐impregnated fabric laminations placed therein. The blade shown in the particular embodiment is an air compressor blade and the laminations which are of glass fibre are moulded in a moulding machine. The moulded blade is shown in FIG. 2 and after trimming, a root block 13 of metal such as aluminium is slid over the profile portion to abut against the thickened root portion 11.

Citation

(1959), "Month in the Patent Office", Aircraft Engineering and Aerospace Technology, Vol. 31 No. 6, pp. 185-185. https://doi.org/10.1108/eb033129