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Most aircrafts are equipped with an air data system to measure airspeed, angle-of-sideslip(AOS) and so on. An air data system consists of Pitot-static tube and gimbal-mounted weathervane. The static pressure obtained by Pitot-static tube is affected by fuselage nose and angle-of-attack(AOA). To measure AOA and AOS accurately, weathervane should be placed out of boundary layer around fuselage nose...
Collision avoidance of UAV is an important function required from pilots and traffic controller as it intends to fly in the airspace of manned aircraft. It is implemented into Smart UAV which the flight test for automatic take-off, conversion and mission flight was conducted successfully last year. Prior to flight test for collision avoidance, the hardware-in-the-loop simulation (HILS) test is conducted...
An intelligent tilt-rotor UAV is being developed by the Smart UAV Development Center of Korea Aerospace Research Institute. It is equipped with integrated GPS/INS system and RALT(radar altimeter) for automatic takeoff and landing. GPS/INS integration system gives the altitude referenced to WGS-84 ellipsoid which can be vulnerable to external multipath environment. RALT provides the aircraft AGL (above...
The ground test results of Smart UAV are described. The ground test consists of HILS, iron-bird test, 4-DOF (degrees of freedom) ground rig test, and tethered hover test. One of the main purposes of ground test is to evaluate the integrated flight control system including a digital flight control computer, GPS/INS sensor, air data sensors, etc as well as ground control system (GCS). The performances...
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