"Engine design." . . "Applications programs (Computers)" . . "Propulsion system performance." . . "Computer aided design." . . . . . . . . . . . . . . . . . "Design geometry and design/off-design performance computer codes for compressors and turbines"@en . . . . . . . "Gas turbine engines." . . "Turbocompressors." . . "Computational geometry." . . "Performance prediction." . . "Propulsion system configurations." . .