Saab AB

About: Saab AB is a company organization based out in Thun, Switzerland. It is known for research contribution in the topics: Antenna (radio) & Signal. The organization has 862 authors who have published 928 publications receiving 8807 citations. The organization is also known as: Saab AB & Svenska Aeroplan AB.

Method for training behavior during a nuclear, biological or chemical warfare attack and combat training system

Abstract: The present invention relates to a method for training behavior during a nuclear, biological or chemical warfare attack, including a number of players. The method includes determining exposure to a simulated nuclear, biological or chemical attack for each player; providing a signal indicating said exposure in at least one alarm simulator unit, said alarm simulating unit generating an audio/visible alarm signal; and establishing the effect of said exposure for each player.

Synthetic attitude and heading reference for Saab Gripen

Abstract: In future versions of Saab Gripen, the mechanical artificial horizon will be replaced by a computer calculated attitude and heading, independent of the inertial navigation system (INS). The system uses data from sensors already existing in the aircraft, which are easily available in a highly integrated, 4th generation combat aircraft such as the Gripen. The sensor information used is a three-axis magnetic detector, true airspeed, angle of attack, barometric altitude, flight control rate gyros and load factor. The sensor data is fused together in an extended Kalman filter (EKF). Each sensor by itself is of relatively poor quality. For instance, the accuracy of the rate gyros is in the order of degrees per second, rather than degrees per hour as is the case in gyros dedicated for navigation use. However, when all data are combined, they provide an attitude and heading estimate with sufficient quality for its purpose; to cross-monitor the INS, and to serve as a backup in case the INS fails or data can not be displayed. The system is called synthetic attitude and heading reference system (SAHRS), and is a Saab patent. A similar system is developed and operational in the Saab Viggen.

Design and simulation of a parameter varying controller for a fighter aircraft

Abstract: Linear fractional transformation gain-scheduling has been used to design a linear parameter varying controller for a generic fighter aircraft model. The aircraft model is a light weight delta canard configuration with all moving canards with negative inherent stability in the longitudinal axis for subsonic speeds. A linear parameter varying description of the longitudinal dynamics, with Mach number as parameter, is constructed and an angle-of-atta ck command system is designed using a linear matrix inequality based synthesis technique, which is able to handle both parametric and dynamics uncertainties. The resulting controller, gain-scheduled with Mach number, is discretized and implemented by means of rapid prototyping. Results from frozen analysis, nonlinear simulation and piloted simulations are presented.