... Low Polar Orbit . ... Different types of satellite orbits have different uses: while the synchronous orbit is best for communication satellites, Lagrangian point orbits help monitor the solar wind before it reaches Earth. ... Many spacecraft use such orbits, e.g. the US Air Force surveillance satellites of the DMSP series, or the series of French Earth-resources spacecraft SPOT . ... If the satellite then starts near a noon-midnight orbit, it will always pass near noon and near midnight. ...

... Orbit . ... The orbital period of a satellite increases as its mean distance from Earth grows. ... T = 84 minutes x R x –R . ... A satellite orbiting above the equator at that distance keeps its position above the same spot on the ground; hence this is known as the synchronous orbit, from the Greek syn--same, chronos--time. ... For this reason many synchronous satellites have carried detectors for magnetic fields and for trapped or injected ions and electrons. ... Synchronous satellites . ...

Lunar Orbiter 2 . ... The Lunar Orbiter 2 spacecraft was designed primarily to photograph smooth areas of the lunar surface for selection and verification of safe landing sites for the Surveyor and Apollo missions. ... The spacecraft acquired photographic data from November 18 to 25, 1966, and readout occurred through December 7, 1966. ... The two separate lens, shutter, and platen systems utilized the same film supply and recorded imagery simultaneously in adjacent areas on 70-millimeter film. ...

... November 26, 2001 at 21:24:12 Moscow time the Progress M1-7 transport cargo vehicle with Colibri microsatellite (MS) accommodated in the payload compartment was launched from the Baikonur cosmodrome to the near-earth orbit in compliance with the International Space Station (ISS) flight program. ... According to the ballistic analysis made by S.P. Korolev RSC Energia specialists, MS will make an atmospheric re-entry and be destroyed on 3-4 May 2002. ... Official WEB-site of S.P.Korolev RSC Energia . ...

The goal of this page is to organize material that has been generated concerning: . process improvement in the LRP . documentation on functional and data requirements for LRPG task areas . the migration of LRP tools to unix Each task name listed in the Summary section is linked to its own page which contains the details of the task and its current requirements documentation. ... Task Completed . ... Bill W. Task Completed . ... Requirements Completed . ... Requirements Documentation . ...

... NASA Astronaut (former) . ... Graduated from East Detroit High School, Eastpointe, Michigan, in 1973; received a bachelor of science degree in bioscience from the U.S . Naval Academy in 1977; a doctorate in medicine from Wayne State University in 1981; a master of science degree in systems management from University of Southern California in 1988; a master of public health degree in health policy from the ... Top graduate, Naval Flight Surgeon Training and Naval Safety Officer's School. ...

... an error occurred while processing this directive] . Satellite passes used for composition: . ... an error occurred while processing this directive] [an error occurred while processing this directive] . For information send a mail to: info@sputnik.infospace.ru . ...

... an error occurred while processing this directive] The EMOSn_REDIST CCFs with version numbers greater than 0051 are only compatible with SAS version 6.5 and beyond. ... We recommend that you use the latest SAS version (currently 6.5) with the latest redistribution CCFs. ... If you cannot upgrade to SAS 6.5 then it is essential to build calibration interface files using the analysis date option within cifbuild to EXCLUDE the new files. e.g. cifbuild analysisdate="2005-07-01" . ...

... Комментариев нет 22 августа 2010, 13:58 Blogger , English , Астрономия . ... Neptune will finally complete its first full orbit of the sun since it was discovered in 1846a approximately one year from now, according to NASA estimates. ... Twitter Weekly Updates for 2010-08-21 . ...

Modules | ... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 . ... Other Modules . ... Core Apache HTTP Server features that are always available . ... This module provides for executing CGI scripts based on media type or request method. mod_alias . ... Sends files that contain their own HTTP headers . ... User authentication using MD5 Digest Authentication. mod_authn_alias . ... Provides for "trailing slash" redirects and serving directory index files . ...

... 10:00 - 11:00 Juergen Reingruber (ENS de Paris, France) . The search process for small targets in cellular microdomains . ... Statistical models on random lattices . ... 15:00 - 16:00 Vyacheslav Priezzhev (Joint Institute for Nuclear Research, Dubna, Russia) . ... Extreme statistics of vicious walkers: from random matrices to Yang-Mills theory . ... Conformal blocks and quantum Hall effect . ... Topological field theories and statistical models . ... Benjamin-Ono integrable systems in 2D CFT . ...

... int kill(int pid, int signal) - a system call that send a signal to a process, pid . ... sig_talk.c --- Example of how 2 processes can talk */ /* to each other using kill () and signal () */ /* We will fork() 2 process and let the parent send a few */ /* signals to it`s child */ /* cc sig_talk.c -o sig_talk */ #include stdio.h #include signal.h void sighup(); /* routines child will call upon sigtrap */ void sigint (); void sigquit(); main() { int pid ; /* get child process */ if ((...

... Pre-university education . ... Facilities and equipment . ... SSAU History . SSAU roadmap . ... Contacts . ... The scientists of Samara State Aerospace University have completed dynamic tests of the first Russian university nanosatellite SamSat-218D created by SSAU students. ... It has already passed the whole set of tests and transferred to the Rocket and Space Centre Progress . ... The whole test cycle of the nanosatellite SamSat-218D (Module Contact-Nanosatellite") will be completed in July. ...

... If the user types "!" at the first ">" prompt, the existing parameter file is used if one exists. ... The following commands are available (for a description see the VAX/VMS Hermes User's manual): keyword=values (only one keyword per line) /ABO /ERRLEV n /GO /MESLEV n /OFF dev /ON dev /MODE n /STAT n When the program calls one of the routines of the Userinp family, the user is prompted in the usual way (depending on the default level). ... At the first occasion the ">" prompt will then appear. ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

Ground Support of RadioAstron . Control and Tracking Stations . RadioAstron satellite control (command transmission, telemetry, orbit measurements) will be conducted from Evpatoria and Bear Lake control stations. ... Coarse orbit measurements will be carried out from control stations. Each measurement takes ten minutes. ... Orbit measurements at tracking stations give only radial component of spacecraft velocity but the measurements are going continuously during observing sessions. ...

Next: J.E. Chambers, Research Astronomer Up: Research Previous: Research Contents . ... Solar Variability and Climate . Other Activities . ... Applied to data of flares on Gliese866 he was able to estimate the area of hydrogen emitting flare regions as 1-13% of the stellar surface. ... As partners in the project, Armagh Observatory has been asked to contribute to the selection process in exchange for priority access to the data which will eventually flow from the satellite. ...

Earth at Night . ... Credit Copyright: NASA , NOAA NGDC , Suomi-NPP , Earth Observatory , . Data and Processing: Chris Elvidge and Robert Simmon Explanation: This remarkably complete view of Earth at night is a composite of cloud-free, nighttime images. ... It also has advantages compared to cameras on the International Space Station, passing over the same point on Earth every two or three days while Suomi-NPP passes over the same point twice a day at about 1:30am and 1:30pm local time. ...

... Research . Projects . ... The name of the project APEX is a reduction from words " Active Plasma Experiments " . The core of the project are active experiments with injection of electron and (or) plasma beams from a board of the satellite with simultaneous registration of the phenomena, produced by interaction of injected beam with background plasma. ... Active experiments utilise modulated electron beam accelerator and source of modulated xenon plasma beam on the main spacecraft APEX. ...

When you enter a command at the shell prompt, your shell forks a child process in which to execute the command. The parent process (your shell) waits for the command to complete and for its child process to die. Until then you are unable to enter another command. Commands entered in this way are known as foreground processes . Once the command completes and the child process dies, the parent process is reactivated, the shellprompt returns, and you can enter another command. ...