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561.
Thanthry N. Emmuadi I.P. Srikumar A. Namuduri K. Pendse R. 《Aerospace and Electronic Systems Magazine, IEEE》2009,24(10):23-29
Safety and security are the most discussed topics in the aviation field. The latest security initiatives in the field of aviation propose [1I] the aircraft carriers to implement video surveillance within the aircraft at strategic locations. The current proposals allow the video surveillance data to be stored within the aircraft and monitored by one of the flight crew. The monitoring crew will be responsible for identifying the anomaly within the aircraft and take necessary preventive actions. With the introduction of additional technology within the aircraft, mere human perception may not be sufficient to make a decision. In this research work, the authors explore the possibility of implementing a smart video surveillance system (SVSS) within the aircraft that is tuned toward detecting the behavioral anomaly within the aircraft. The SVSS will generate security triggers when it detects an anomaly within the aircraft. These triggers could be combined with other triggers generated by different aircraft components (possible alarms from the flight crew, data traffic anomaly, or alarm generated by one of the avionics components) to provide a better understanding of the situation to the monitoring crew. 相似文献
562.
Network management is one of the most discussed topics in the networking fraternity. The efficiency of the network management suit is measured by the number of parameters/components handled by the application while making decisions. In the case of internet-enabled aircrafts, along with network security, even aircraft safety needs to be considered as a factor while designing the Network Management suit. This requires the Network Management suit to monitor/analyze the aircraft-related data (avionics data, physical security parameters, etc.) while determining the proper functioning of the overall system. Herein, these authors present a framework for Network Management suit that, along with network health, monitors inputs from avionics, video surveillance system, weather monitoring system, and manual pilot alarms, and based on the situation, reconfigures the on-board networking devices to stream appropriate flight-critical data to the ground station. The proposed framework attempts to provide a comprehensive user interface for the flight health monitoring crew with all relevant data. 相似文献
563.
V.G. Grigoryev S.A. StarodubsevP.A. Krivoshapkin A.N. PrikhodkoA.G. Yegorov 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2008,41(6):943-946
The method has been developed to calculate galactic cosmic ray anisotropy parameters by using on-line data of the neutron monitor 24-NM-64 and muon telescope at the Yakutsk station. The preliminary analysis shows that characteristic changes in the anisotropy parameters caused by the first spherical harmonics of cosmic ray angular distribution are observed 1–2 days before the onset of the most part of large-scale geophysical disturbances on the Earth. There is reason to believe that the attraction of data of geophysical observations of other kinds will allow to develop the forecast methods for the arrival of large-scale interplanetary disturbances at the Earth. 相似文献
564.
N. N. Makarov A. A. Porunov V. V. Soldatkin V. M. Soldatkin 《Russian Aeronautics (Iz VUZ)》2008,51(2):188-197
In this paper, a problem of measuring the altitude-speed helicopter performance in the range of low and near-zero flight velocities is considered. The structural functional scheme of the omnidirectional helicopter air data system based on the stationary aerometric multichannel transducer (AMT) as well as the jet-convective measuring channels is shown and algorithms for the formation of the system output signals are presented. In order to extend the lower bound of operating speeds, it is proposed that the omnidirectional system be integrated with the aeromechanical measuring computer system that realizes the VIMI method with Luenberger’s observer. Also given is the algorithm support and the accuracy of the integrated system operation is estimated. 相似文献
565.
Influence of clinorotation and fettering stress on tail regeneration of Triturus vulgaris (Urodela).
H J Anton E N Grigoryan K Krupp-Beyerlein H Pitzer V I Mitashov 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1998,21(8-9):1159-1162
Tail-amputated adult Triturus vulgaris, fettered in cuvettes of a fast-rotating clinostat were exposed to simulated weightlessness (60 rpm; equiv. to 10(-3)-10(-4) g), during a 14-day period. To feed and clean the animals rotation was stopped once a day for approx. 10 min. To test the influence of the fettering stress, a second series of animals was kept separately under normal earth conditions without rotation. A further control series was kept in a dark container without any handicap. While tail regeneration of the rotated animals was markedly accelerated, the fettered-only animals showed a considerably less marked acceleration effect. At the end of the 14-day period, all regenerates were reamputated together with an additional 5 mm of the tail stump. Although this second level of amputation was distant from the first, the regenerative growth rate of the rotated series was accelerated 123% in contrast to both the control and the fettered-only series. Our results demonstrate that the growth acceleration is induced by clinorotation. Fettering stress has no comparable influence. The growth promoting effect is not limited to the regenerating area. 相似文献
566.
O. A. Zhuravlev E. V. Shakhmatov A. N. Kryuchkov N. D. Bystrov A. I. Dolgov 《Russian Aeronautics (Iz VUZ)》2009,52(4):463-467
The results of vibration tests for heavy-loaded elements in the auger-centrifugal stage of an aircraft fuel pump performed with the use of an interference-free digital speckle-interferometer created at the Samara State Aerospace University are presented. The speckle-interferograms of an auger and a centrifugal wheel of the auger-centrifugal pump stage in different conditions of attachment and dynamic loading are given. The data obtained may be of sufficient importance in the development of aircraft fuel pumps for a specified service life. 相似文献
567.
V. S. Moiseev D. S. Gushchina A. N. Kozar G. E. Borzov 《Russian Aeronautics (Iz VUZ)》2009,52(3):372-375
We propose a mathematical model and the numerical method for an optimal choice of unmanned aerial vehicles (UAVs) from those
being in flight to fulfill a newly received order for monitoring (reconnaissance) of a new region. Examples of using the approach
being proposed and main lines of its realization in promising information unmanned aircraft complexes (UAC) are presented. 相似文献
568.
569.
570.
E. N. Parker 《Space Science Reviews》2009,144(1-4):15-24
We review some longstanding scientific mysteries related to solar magnetism, with final attention to the mystery of the “turbulent diffusion” essential for the theoretical α ω-dynamo that is believed to be the source of the magnetic fields of the Sun. Fundamental difficulties with the concept of turbulent diffusion of magnetic fields suggest that the solar dynamo problem needs to be reformulated. An alternative dynamo model is proposed, but it remains to be shown that the model can provide the quantitative aspects of the cyclic magnetic fields of the Sun. 相似文献