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291.
A G-induced loss-of-consciousness (GLOC) and spatial disorientation auto-recovery system has been developed and tested on the Advanced Fighter Technology Integration (AFTI)/F-16 aircraft. The pilot controls the operation of this system by entering an MSL altitude and manually arming the system. Engagement conditions of the auto-recovery maneuver are controlled by aircraft speed, altitude, attitude, and the set recovery altitude and do not depend upon any determination of pilot physiological condition. Initiation of the recovery maneuver is preceded by visual and aural warnings which continue until the pilot resumes control. The pilot always has the capability to override or disengage the autorecovery maneuver. This system, as developed on the AFTI/F-16, is directly and quickly applicable to other analog or digital flight control systems such as found in the F-16 or F-18. This system provides the pilot protection from ground collision in most air-to-air training environments. 相似文献
292.
John B. Rhinelander 《Space Policy》1986,2(2)
This article reviews the key provisions of the ABM Treaty and the major issues of interpretation which need to be resolved. The various phases of the US Strategic Defense Initiative are discussed, showing that permitted SDI research may cross over the prohibited development and testing beginning in 1988. Cooperative research with US allies is discussed in terms of the Treaty constraints. US and Soviet ballistic missile defence programmes are summarized and the major US and Soviet compliance issues, including the Krasnoyarsk radar, are reviewed. The author argues that limitations on defensive systems remain a precondition to limitations on offensive systems. The ABM Treaty should be enhanced by agreed interpretations, a separate ASAT treaty, and perhaps four amendments to the ABM Treaty. 相似文献
293.
The launch of the Israeli satellite Ofeq-1 during September 1988 has significant regional and global implications. These include the proliferation of both surveillance satellites and ballistic missiles, the latter having the potential to deliver conventional, chemical and nuclear warheads to areas situated many hundreds of miles away. This paper addresses both the origins of the Israeli booster technology and the many implications of the satellite launch. It then speculates on their political and arms control consequences. It concludes that in light of the parallelism that has evolved between nuclear and chemical weapons and ballistic missiles, there is an increasing need to develop global and, if appropriate, regional and bilateral strategies to limit missile proliferation and bring the issue to the forefront of international political debate. 相似文献
294.
Roberta L. Klatzky Andrew C. Beall Jack M. Loomis Reginald G. Golledge John W. Philbeck 《Spatial Cognition & Computation》1999,1(4):495-497
Volume Contents
Contents of Volume 1 相似文献295.
296.
On 14 January 2004 President George Bush announced his vision for space exploration, to include a human return to the Moon. He argued that, with a moderate increase in NASA's annual expenditure, such a return was possible. This paper is an exploration of how the President's space initiative can be realised on an international co-operative basis along similar lines to those already existing with the international space station (ISS). By abandoning the concept of a lunar landing as the major goal of a lunar programme, the initiative is made feasible. The three-stage plan here presented meshes with the currently evolving plans for the US space initiative to provide a realistic, affordable and sustainable strategy for manned lunar exploration. It represents a significant opportunity for the USA to unite and lead the world on this grand, civilisation defining adventure. 相似文献
297.
The first research payloads reached the International Space Station (ISS) more than two years ago, with research operating continuously since March 2001. Seven research racks are currently on-orbit, with three more arriving soon to expand science capabilities. Through the first five expeditions, 60 unique NASA-managed investigations from 11 nations have been supported, many continuing into later missions. More than 90,000 experiment hours have been completed, and more than 1,000 hours of crew time have been dedicated to research, numbers that grow daily. The multidisciplinary program includes research in life sciences, physical sciences, biotechnology, Earth sciences, technology demonstrations as well as commercial endeavors and educational activities. The Payload Operations and Integration Center monitors the onboard activities around the clock, working with numerous Principal Investigators and Payload Developers at their remote sites. Future years will see expansion of the station with research modules provided by the European Space Agency and Japan, which will be outfitted with additional research racks. 相似文献
298.
This article examines recent progress in US land remote sensing policies by reviewing the evolution of policy on commercial imaging satellites from 1992 to the present and charting developments in the Landsat programme. Key features of the new (2003) commercial remote sensing policy are described, which go far in addressing the ambiguities of the earlier (PDD-23) framework that, in practice, hampered development of a commercial industry. In the case of Landsat, problems, particularly those of assured data provision, remain. The key to solving them lies in integrating civil, military and commercial elements more coherently, rather than considering them in isolation. 相似文献
299.
Among the principal objectives of the Phase 1 NASA/Mir program were for the United States to gain experience working with an international partner, to gain working experience in long-duration space flight, and to gain working experience in planning for and executing research on a long-duration space platform. The Phase 1 program was to provide the US early experience prior to the construction and operation of the International Space Station (Phase 2 and 3). While it can be argued that Mir and ISS are different platforms and that programmatically Phase 1 and ISS are organized differently, it is also clear that many aspects of operating a long-duration research program are platform independent. This can be demonstrated by a review of lessons learned from Skylab, a US space station program of the mid-1970s, many of which were again “learned” on Mir and are being “learned” on ISS. Among these are optimum crew training strategies, on-orbit crew operations, ground support, medical operations and crew psychological support, and safety certification processes. 相似文献
300.
Earl E. Scime Samuel J. Bame John L. Phillips Andre Balogh 《Space Science Reviews》1995,72(1-2):105-108
Ulysses measurements of the solar wind electron heat flux as a function of heliographic latitude are presented. The latitudinal in the electron heat flux presented have been normalized by the radial gradient in the electron heat flux obtained during the in-ecliptic phase of the Ulysses mission (qe R–3.0). We find no significant variation in electron heat flux with latitude. 相似文献