The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A fast solution of roll angle (SRA) based on cosine law and geomagnetism calculative principles was proposed. Single-axis gyro information is used to get real-time roll angle and geomagnetic information for initial roll angle. This method meets the fast computing demand for real-time roll angle of spinning aircrafts with high rolling velocity during flight. The model of the fast SRA is built using...
In order to suppress random drift of MEMS gyro effectively, the gyro angular rate information is fused with the angular rate information which is computed from geomagnetism based on theory of federated Kalman filter in this paper, and global optimum angular information is achieved. Due to the easy disturbance characteristics of the geomagnetism, its angular rate is diagnosed and fixed by fault-tolerant...
A new signal processing method is put forward in basis of geomagnetic sensor for High Rolling Velocity Guided Projectile (HRVGP), whose Zero Position of Rolling Angle (ZPRA) is unable to bind directly and whose real-time rolling angle can be recorded. Through reconstructing attitude transformation matrix, the mathematic model of computing method of ZPRA is established. Then it's used the model to...
The aerodynamic characteristics of propeller-wing interaction for the Rocket Launched UAV were simulated numerically based on the High Performance Computing Cluster System by means of sliding mesh technology. The results showed that the effects on the wing made by the rotating propeller were much notable. The forces and moments data were collected for axial wing placements ranging from 0.056 to 0...
The aeroacoustic characteristics of propeller-wing were simulated numerically. And the efficiency affected by the installation of angle of the propeller blade was also analyzed. Based on the pressure cloud and streamlines, This experiment used FW-H equation proposed by Ffowcs Williams and Hawkings to imitate the sound generation and dissemination.
The aerodynamic characteristics of the BWB-UAV were simulated numerically based on the high performance computing cluster system. The effects on the aerodynamic characteristics of the whole aircraft made by the BWB were investigated. The longitudinal/lateral characteristics of BWB and the conventional tailless sweep wing had been compared. The results showed that BWB configuration had the better longitudinal...
This paper mainly focuses on double-channel proportional control characteristic of the endoatmospheric spin rocket. The divided command model is built under spin condition and the control process is simulated in mathematic method. In the end, it is conclusion of spin rocket proportional control characteristic.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.