Jacob Zarovsky
naca-rm-l51e07
Jul 1951
System analyses and autopilot design procedure have been carried out for a supersonic pilotless aircraft with twin jet engines. The autopilots investigated were a gyro-actuated control, a gyro-actuated control with a rate-sensing device (to provide additional damping), and an electronic-hydraulic autopilot.
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http://naca.central.cranfield.ac.uk/reports/1951/naca-rm-l51e07.pdf