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Topic: Orbital maneuver


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In the News (Mon 16 Nov 09)

  
  Orbital Successfully Completes Final Developmental Flight For U.S ...
Orbital was awarded an initial development contract in 2000 to meet the Navy's requirement for an affordable SSST system to simulate high-speed anti-ship cruise missiles for fleet training and weapon systems research, development, test and evaluation.
Orbital is the only U.S. Department of Defense prime contractor to be both developing and operating ramjet-powered missile systems.
Orbital also offers space-related technical services to government agencies and develops and builds satellite-based transportation management systems for public transit agencies and private vehicle fleet operators.
www.orbital.com /NewsInfo/release.asp?prid=504   (848 words)

  
  STS-99 Shuttle Abort Modes
During the downrange phase, a pitch-around maneuver is initiated (the time depends in part on the time of a space shuttle main engine failure) to orient the orbiter/external tank configuration to a heads up attitude, pointing toward the launch site.
In addition, excess orbital maneuvering system and reaction control system propellants are dumped by continuous orbital maneuvering system and reaction control system engine thrustings to improve the orbiter weight and center of gravity for the glide phase and landing.
The orbital maneuvering system engines would be used to place the orbiter in a circular orbit.
www.shuttlepresskit.com /STS-99/abort.htm   (1700 words)

  
 February 02, 1996
As a result of the separation impulse the orbital period of MAGION s/c has been diminished by approximately 53 s with respect to the orbital period of the main s/c.
The thrust of jets for the orbital maneuvering goes along construction axis Z which in standard situation is to be main inertia axis and consequently the spin axis.
From these figures one can see that after orbital maneuver the periods of the main s/c and MAGION have become approximately equal: according to Fig.1 MAGION is ahead of the main s/c by 43 minutes and Fig.2 shows the same value after one orbit.
www.iki.rssi.ru /natan/t220196.html   (1029 words)

  
 Confusion and Mystery of Shenzhou-2 Mission Deepens
Meanwhile, the orbital component of the Shenzhou-2 mission is reportedly alive and well having executed yet another orbital maneuver to raise the orbital height of the spacecraft.
After 42 days in space, the SZ-2 Orbital Module is circling the Earth in an orbit of 386.4 km x 400.2 km with an inclination of 42.6 deg and a period of 92.4 minutes.
The recent orbital maneuver brought the Module back to an orbiting altitude almost as high as when it was initially left alone in space after the SZ-2 Descent Module returned on January 16.
www.spacedaily.com /news/china-01v.html   (680 words)

  
 ORBITAL MANEUVERING SYSTEM
The orbital maneuvering system provides the thrust for orbit insertion, orbit circularization, orbit transfer, rendezvous, deorbit, abort to orbit and abort once around and can provide up to 1,000 pounds of propellant to the aft reaction control system.
The second OMS thrusting period using both OMS engines occurs near the apogee of the orbit established by the OMS-1 thrusting period and is used to circularize the predetermined orbit for that mission.
Before the deorbit thrusting period, the flight crew maneuvers the spacecraft to the desired deorbit thrusting attitude using the rotational hand controller and RCS thrusters.
science.ksc.nasa.gov /shuttle/technology/sts-newsref/sts-oms.html   (8433 words)

  
 Clavius: Bibliography - glossary
An orbital maneuver in which retrograde delta-v is applied in order to lower the altitude of the orbit.
In orbital mechanics the point at which an orbiting object is closest to the object being orbited.
The maneuver causes the propellants to settle to the bottom of the tank.
www.clavius.org /bibdict.html   (2374 words)

  
 Orbital maneuver - Definition, explanation
An orbital maneuver is a change from one orbit to another, accomplished by applying thrust.
Usually thrust is produced in short bursts, since this is the most efficient, it minimizes gravity drag.
Applying a low thrust over longer periods of time is referred to as non-impulsive maneuvers (even though any thrust can be said to produce an amount of impulse).
www.calsky.com /lexikon/en/txt/o/or/orbital_maneuver.php   (153 words)

  
 Atlas of Ophthalmology:  Orbital haemangioma by Professor Chua Chung Nen
A 13 year-old girl is referred from a private ophthalmologist because of the presence of a left inferior orbital mass and inferior eyelid discoloration.
CT scan shows a soft tissue mass with lobulated margins in the left anterior cheek extending into the inferior aspect of the left orbit.
Before a decision is made for excision, a MRI scan is requested to further delineate the lesion.
www.sarawakeyecare.com /Atlasofophthalmology/Oculoplastic/picture50orbitalhaemangioma.htm   (149 words)

  
  Universe Today - Cassini Completes Orbital Maneuver
The maneuver was necessary to keep the spacecraft from passing through the rings and to put it on target for its first close encounter with Saturn's moon Titan on Oct. 26.
That means it is nearly at a standstill compared to its speed of about 30,000 meters per second (67,000 miles per hour) at the completion of its orbit insertion burn on June 30.
The maneuver was the third longest engine burn for the Cassini spacecraft and the last planned pressurized burn in the four-year tour.
www.universetoday.com /am/publish/cassini_completes_orbital_maneuver.html?2482004   (511 words)

  
 Pioneer 10 Misses Orbital Correction Maneuver
A recent attempt to re-orient Pioneer 10 now appears to have failed, leaving the distant probe perilously close to the point where all contact may finally be lost.
It appears that a pointing maneuver conducted July 8 and previously reported as successful did, in fact, not take place.
The science and transmitter are turned off to provide enough power to fire the attitude control engines for the biannual spacecraft pointing maneuvers towards the Sun (the latest maneuver was executed on 2/11-12/00).
www.spacedaily.com /news/pioneer10-00c.html   (457 words)

  
 [No title]   (Site not responding. Last check: 2007-10-26)
In the view of some, the Shenzhou missions, with their orbital changes in mid-course, are signs that China has grasped technology that can be used to counter the U.S. missile defense system.
Actually, the orbital maneuver technology used for manned spacecraft is the same as that used for satellites.
A reliable and accurate launch vehicle, with its fault self-detection systems, escape system as well as spacecraft orbital maneuver technology are capabilities that were mastered by the United States and Russia long ago.
www.wsichina.org /www/focus.cfm?Focusid=93&charid=1   (2664 words)

  
 EO Study: Learning to Fly Page 3
There are "thrusters" positioned strategically at locations on the spacecraft that allow the flight operations team to adjust the orbital position of Terra–to fly it, essentially.
The first major maneuver planned for Terra, on January 11, was to raise it from its lower elliptical orbit to a higher, circular orbit of 705 km above the Earth.
To do this orbital maneuver, the Terra team had to fire Terra’s onboard thrusters to both raise its orbit as well as keep the satellite properly oriented with respect to the Earth.
earthobservatory.nasa.gov /Study/LearningToFly/fly_3.html   (898 words)

  
 PTC Express March 2007: Doing Orbital Mechanics with Mathcad
The two-impulse sequence for maneuvering into the lower orbit is called a Hohmann transfer.
The second of the two types of Hohmann transfer just described is quite familiar to orbital analysts, because it is used to maneuver Earth satellites into high-altitude orbits.
Historically, impulses along the instantaneous velocity vector have proved to be the most useful kind of orbital maneuver.
www.imakenews.com /ptcexpress/e_article000733882.cfm?x=b11,0,w   (661 words)

  
 SPACE.com -- Russian Spacecraft Fails to Boost ISS into Higher Orbit
EDT (2233 GMT), and were expected to raise the ISS into an orbit that hits 224 statute miles (360 kilometers) at its highest point, a bit higher that the station's current orbital peak of 220 statute miles (354 kilometers), NASA officials said Tuesday.
But the Progress engines switched off less than two minutes into the first burn, NASA officials said, adding that there appeared to be a communications problem between the spacecraft's thrusters and Russian navigation computers, which shut down the engines as designed due to the data dropout.
Tuesday's altitude-raising maneuver was slated to place the station into the proper position for a second orbital boost later this year that would set up the ISS to receive an unmanned Russian-built cargo ship - Progress 20 - slated to launch toward the space station on Dec. 21, Navias added.
www.space.com /missionlaunches/051019_exp12_issreboost.html   (509 words)

  
 Orbital Express
The goal of the Orbital Express Space Operations Architecture program is to validate the technical feasibility of robotic, autonomous onorbit refueling and reconfiguration of satellites to support a broad range of future U.S. national security and commercial space programs.
Refueling satellites will enable frequent maneuver to improve coverage, change arrival times to counter denial and deception and improve survivability, as well as extend satellite lifetime.
The elements of the Orbital Express demonstration, coordinated with Air Force Space Command and Air Force Space and Missile Command, will be tied together by non-proprietary satellite servicing interfaces (mechanical, electrical, etc.) that will facilitate the development of an industry wide on-orbit servicing infrastructure.
www.darpa.mil /orbitalexpress   (348 words)

  
 RSC Energia Statement on ISS Reboost Anomaly | SpaceRef - Space News as it Happens
A scheduled orbital correction of the International Space Station (ISS) was terminated ahead of time because during the orbit-raising maneuver the control system detected possible station attitude instability.
It was the first orbital correction maneuver after a change in the configuration of the US segment of ISS (installation of an additional solar array truss during STS-115 mission of the Atlantis Space Shuttle Orbiter in September 2006).
The next orbital correction maneuver using the same Progress spacecraft is scheduled for December 2.
www.spaceref.com /news/viewsr.html?pid=22668   (554 words)

  
 Spaceflight Now | Breaking News | Galileo to perform orbital maneuver this week
By periodically checking out the instrument in this manner, scientists can determine accurately how the signal from the instrument is changing as the detectors age.
On Friday, the spacecraft performs an Orbit Trim Maneuver (OTM), the 97th such activity planned since Galileo entered orbit around Jupiter in December of 1995, and the second of three planned for this orbit.
This burn of the spacecraft's propulsive thrusters adjusts the path the spacecraft in order to accurately reach our next close flyby of Io in early August.
www.spaceflightnow.com /news/n0107/10galileothisweek   (484 words)

  
 【CD】ORBITAL MANEUVER phase2:anemotaxisについて -ORBITAL MANEUVER phase2:anemotaxis-
ORBITAL MANEUVER phase two anemotaxis ORBITAL MANEUVER三部作の第二作目、ボ‐]> アニメ lelouch2nd Sun, 10 Jun 2007 01:09:24 +0000...
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b000e6fy4w.wild-shop.net /Music   (138 words)

  
 AO-40 Orbit Maneuvers
The purpose of the meeting was to discuss the approach and necessary orbital maneuvers after the launch of Phase 3D on board the Ariane 5.
At the same time there was also a meeting with DASA (now Astrium) to discuss details of the fueling of the satellite with propellants for the 400 Newton motor and the arc-jet propulsion system.
After the orbital parameters have been accurately determined and further calculations performed, another firing of the 400 N motor will take place to "fine adjust" the inclination.
www.amsat.org /amsat/sats/ao40/maneuvers.html   (1705 words)

  
 Eagle Lander 3D Orbital Flight
Thiese missions will test your ability to maneuver in space, align the spacecraft and dock.
Maneuvering the LM to align with the CSM with the help of the COAS.
Getting closer with some final corrections to be made.
eaglelander3d.com /orbital.html   (292 words)

  
 Orbital Debris & Collisions | NASA Watch®
NASA Safety Standard 1740.14: Guidelines and Assessment Procedures to Limit Orbital Debris Generation.
NASA was totally dependent upon the Russians to perform the unsuccessful ISS orbital maneuver.
Orbital Debris from Upper Stage Breakup (Progress in Astronautics and Aeronautics, Vol 121), by Joseph P. Loftus
www.nasawatch.com /debris.html   (1274 words)

  
 SPACE.com -- Shenzhou 6 Astronauts Adjust Spacecraft's Orbit
The astronauts have made more than 36 orbits to date and traveled more than 932,056 miles (1.5 million kilometers), the news agency added.
Mission controllers at Beijing Aerospace Command and Control Center said Thursday that this morning's orbital maneuver was required because Shenzhou 6 had deviated from its planned 213-mile (343-kilometer) orbit around Earth, state media reported.
The Shenzhou 6 astronauts - also known as taikonauts - are expected to spend up to five days in orbit, though weather at their landing site in the Siziwang Banner region of Inner Mongolia will likely determine the exact time of their landing, Xinhua said.
www.space.com /missionlaunches/051014_shenzhou6_day3.html   (473 words)

  
 Analytical Graphics, Inc. - AGI Patents
It provides a system and method for orbital planning that allows iterative calculations of orbital parameters to be accomplished in an automated way with one parameter solution serving as input to the next parameter's calculation.
A software program employs a graphical user interface (GUI) to allow a space mission analyst to set up a series of sub-problems of any desired level of complexity.
The program then implements the series automatically and sequentially, incorporating the solution to one sub-problem into the input to the next.
www.agi.com /corporate/patents   (1128 words)

  
 Dundee Satellite Receiving Station New Features
There may be minor interruptions during the day to WWW access while the firewall is tested.
21 March 2002: Terra was placed into a safe hold mode following a routine orbital maneuver on 19th March.
4 May 2000: We apologise for the lack of real-time SeaWiFS data over the past week, due to a failure of the Orbital SGP decryption box.
www.sat.dundee.ac.uk /new.html   (3859 words)

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