Results 91 to 100 of about 25,430 (214)

The satellite based augmentation system – EGNOS for non-precision approach global navigation satellite system [PDF]

open access: yesTransport Problems, 2012
First in the Poland tests of the EGNOS SIS (Signal in Space) were conducted on 5th October 2007 on the flight inspection with SPAN (The Synchronized Position Attitude Navigation) technology at the Mielec airfield.
Andrzej FELLNER   +2 more
doaj  

Experimental investigation on dynamic compaction for reinforcement of liquefiable sandy silt foundation

open access: yes矿业科学学报
In light of the significant presence of liquefiable sandy silt layers in the foundation of the airfield area at the Beijing Daxing airport, this study employed a low-energy, small spacing, and low blow count dynamic compaction method to treat it.To ...
WANG Jialei   +5 more
doaj   +1 more source

The Implementation of the EGNOS System to APV-I Precision Approach Operations [PDF]

open access: yesTransNav, 2010
First in the Poland tests of the EGNOS SIS (Signal in Space) were conducted on 5th October 2007 on the flight inspection with SPAN (The Synchronized Position Attitude Navigation) technology at the Mielec airfield.
Andrzej Fellner   +2 more
doaj  

The orbital recovery problem. Part II - Application of analysis technique to selection of recovery sites for return from low circular orbits [PDF]

open access: yes
Lateral range requirements used in selecting spacecraft landing recovery sites for return from low circular ...
Holloway, P. F., Pritchard, E. B.
core   +1 more source

Research on correction principle of assumed temperature under ARJ21 aircraft non-standard conditions

open access: yesHangkong gongcheng jinzhan
At present,the assumed temperature thrust reduction takeoff has been widely used in the operation of domestic civil aircraft. In order to assist flight crew in understanding the principle of rapid correction under nonstandard conditions and to recognize ...
WHANG Ke, HUANG Yuxuan, XIA Jun
doaj   +1 more source

Flight evaluation of the STOL flare and landing during night operations [PDF]

open access: yes
Simulated instrument approaches were made to Category 1 minimums followed by a visual landing on a 100 x 1700 ft STOL runway. Data were obtained for variations in the aircraft's flare response characteristics and control techniques and for different ...
Franklin, J. A.   +2 more
core   +1 more source

Central Atlantic regional ecological test site: A prototype regional environmental information system [PDF]

open access: yes
There are no author-identified significant results in this ...
Alexander, R. H., Mcginty, H. K.
core   +1 more source

Bistatic Experiment Using TerraSAR-X and DLR’s new F-SAR System [PDF]

open access: yes, 2008
A bistatic X-band experiment was successfully performed early November 2007. TerraSAR-X was used as transmitter and DLR’s new airborne radar system F-SAR, which was programmed to acquire data in a quasi-continuous mode to avoid echo window ...
Baumgartner, Stefan   +11 more
core  

Waterlogging Risk Assessment of Airport Airfield Areas Using the Analytic Network Process with Triangular Fuzzy Numbers

open access: yesWater
Risk assessment is an effective management tool for mitigating waterlogging disasters. In this study, a novel airport waterlogging risk assessment framework based on the analytic network process with triangular fuzzy numbers (TFN-ANP) was developed to evaluate hazard, exposure, vulnerability, and comprehensive risk under different return periods.
Jing Peng   +3 more
openaire   +1 more source

Environmental Justice: Challenges of Contaminated Site Cleanup in Rural AK [PDF]

open access: yes, 2018
A shorter version of this article appeared on pp. 1–4 of the Summer 2018 print edition.Efforts to clean up contaminated sites from military installations and other sources have been ongoing in Alaska since the 1980s, and new sites continue to be ...
Cravez, Pamela, Williams, Paula
core  

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