Edmund T. Price formed Solar Aircraft Co., San Diego, February 1928, to produce aircraft and accessories. George Prudden, ex-Stout, chief engineer, produced MS-1 8/10-passenger transport based on Prudden’s TM-1 (21 January 1930), developed 1931 into MS-2 with 500-hp P&W Wasp. Later major force in gas turbines and afterburners, in 1958-60 sharing development of RON series naval light helicopters (Solar T62 engine).