Complex sentence: The contract for the prototype XF6F-1 was signed on 30 June 1941 and was designed to use the Wright R-2600 Cyclone engine of 1,700 hp (1,268 kW) driving a three-bladed Curtiss Electric propeller.
Split into simpler sentences: The contract for the prototype XF6F-1 was signed on 30 June 1941. The aircraft was designed to use the Wright R-2600 Cyclone engine of 1,700 hp (1,268 kW) driving a three-bladed Curtiss Electric propeller.