搜索结果: 1-15 共查到“航天器结构与设计 flight”相关记录15条 . 查询时间(0.062 秒)
Satellite Based Augmentation Systems (SBAS) are now being implemented around the world in order to improve the accuracy and integrity of Global Navigation Satellite Systems (GNSS). One of these is the...
UNCONVENTIONAL CONFIGURATIONS FOR EFFICIENT SUPERSONIC FLIGHT
SUPERSONIC FLIGHT High speed
2015/6/18
Alternative configurations for more efficient supersonic aircraft are suggested by
consideration of the sources of drag at high speeds. Results of studies described in this
paper indicate that sup...
Bee flight secrets revealed（图）
Bee flight
2014/7/10
University of Queensland (UQ) scientists are harnessing honeybee flight secrets to develop insect-sized robot aircraft.
NASA to Preview Final Scheduled Flight of Space Shuttle Atlantis
NASA Final Scheduled Flight Space Shuttle Atlantis
2010/4/29
NASA will preview the next space shuttle mission, the final scheduled flight of space shuttle Atlantis, during a series of news briefings Monday, May 3, at NASA's Johnson Space Center in Houston. NASA...
NASA Sets Media Credential Deadlines for Next Space Shuttle Flight
Media Credential Deadlines Next Space Shuttle Flight
2010/4/29
NASA has set media accreditation deadlines for the May space shuttle flight to the International Space Station. Shuttle Atlantis and six astronauts are targeted to launch the STS-132 mission on May 14...
NASA Schedules Interviews for April Shuttle Mission Flight Directors
NASA Schedules April Shuttle Mission Flight Directors
2010/4/29
NASA Flight Directors Richard Jones and Ron Spencer are available for live satellite interviews beginning March 30 at 6 a.m. CDT. Jones and Spencer will discuss the challenges of space shuttle Discove...
NASA Briefing Highlights Education Outreach During Next Shuttle Flight
NASA Briefing Highlights Education Next Shuttle Flight
2010/4/29
NASA will highlight the educational activities planned on the next space shuttle mission during a news briefing at 12 p.m. CDT, Tuesday, March 9. The briefing will originate from NASA's Johnson Space ...
NASA To Preview April Flight Of Space Shuttle Discovery
NASA April Flight Of Space Shuttle Discovery
2010/2/22
NASA will preview the next space shuttle mission during a series of news briefings on Tuesday, March 9, at NASA's Johnson Space Center in Houston. NASA Television and the agency's Web site will broadc...
NASA Sets Media Credentials Deadlines for Next Space Shuttle Flight
NASA Media Credentials Deadlines Next Space Shuttle Flight
2010/2/22
NASA has set media accreditation deadlines for the March space shuttle flight to the International Space Station. Shuttle Discovery and seven crew members are targeted to launch the STS-131 mission on...
Press Credentials Deadlines Set for Next Space Shuttle Flight
Press Credentials Deadlines Next Space Shuttle Flight
2009/12/18
NASA has set media accreditation deadlines for the next space shuttle flight to the International Space Station. Shuttle Endeavour and six NASA astronauts are targeted to launch the STS-130 mission on...
Development of Universal Flight Trajectory Calculation Method for Unguided Projectiles
Flight trajectory Unguided projectiles Trajectory radar measurements
2009/10/10
A universal external ballistic trajectory model for unguided projectiles is developed in this study. The mathematical model is based on the Maclaurin Series. The Maclaurin Series coecients are predic...
New H-2A Launch Vehicle Technology and Maiden Flight Results
Rockets H-2A Launch Vehicle New Technology
2009/8/19
The H-2A launch vehicle launched August 29,2001 is well balanced in payload capability, reliability, practicality, safety, and cost compared to be H-2 launch vehicle. To realize these concepts, aggres...
土星1B号为土星1号的升级版，附设一个更强力的第二级推进阶段 — S-IVB。和土星1号不同，土星1B号有足够载重量来发射阿波罗指挥/服务舱或登月舱至地球轨道，这令土星1B号成为测试阿波罗太空船的重要工具（当时能运载太空船至月球的较大型火箭土星5号仍在研制阶段）。土星1B号其后比用作载人太空实验室飞行及阿波罗-联盟测试计划。最后一批发射的土星1B号（例如运载太空实验室）的第一级推进阶段并没有交替的...
Flight Delays and Mishandled Bags Up, Consumer Complaints Down in 2006 From Previous Year
flights
2007/2/10
February 7, 2007，U.S. airlines experienced a lower rate of on-time flights and more reports of mishandled baggage last year than in 2005, but passengers filed fewer complaints with the government abou...
On the Verge of the International Polar Year, NSF Commemorates the 50th Anniversary of First Flight To Land at the South Pole（图）
the International Polar Year 50th Anniversary the South Pole
2006/11/10
October 31, 2006，From the United States' Amundsen-Scott South Pole Station, astronomers use sophisticated telescopes to peer into the depths of space and create images of the universe in its infancy. ...