Subscribe free to our newsletters via your
. 24/7 Space News .




ROBO SPACE
Jules Verne Set For Next Step On Road To Automated Station Docking
by Staff Writers
Paris, France (ESA) Mar 31, 2008


Still from computer-generated simulation of ATV docking using ESA 'Docking Video System'. Credits: ESA

International Space Station managers gave the go-ahead on yesterday for Jules Verne ATV to proceed with the second of two demonstration days in the lead up to a first ISS docking attempt later in the week. On Monday, Demonstration Day 2 will see ATV approach to within 11 m of the ISS.

"Having tested very successfully on Saturday the first part of the rendezvous, in particular using the relative GPS between that on Jules Verne and on the Russian Service Module of the ISS, we now have the go-ahead to the test the second part of the rendezvous which uses the optical sensors." said John Ellwood, ESA's ATV Project Manager.

"This will be very interesting, but we have a lot of confidence based on the great performance of Jules Verne during the first demonstration day."

The first demonstration day proves Jules Verne ATV can perform relative navigation with the ISS using relative GPS to successfully and safely manoeuvre the spacecraft to a point located 3.5 km behind the ISS and at the same orbital altitude.

Jules Verne ATV performed flawlessly during the manoeuvres, moving to within visible distance of the Space Station. Saturday's demonstration also confirmed Jules Verne is able to establish a continuous two-way data link with the ISS.

Demonstration Day 1 ended with an Escape command sent from the ATV Control Centre in Toulouse, France, successfully sending Jules Verne ATV away from the Space Station.

During Demonstration Day 2, scheduled to start at 14:26 CEST (12:26 UT) on Monday 31 March, Jules Verne ATV will approach to a point just 11 m away from the docking port on the Russian Service Module Zvezda. ATV will also navigate for the first time using a laser-based optical system.

Data collected during Demonstration Day 2 will be made available to ISS managers for their go-ahead to proceed with a first docking attempt on Thursday. Jules Verne ATV is scheduled to dock with ISS at 16:41 CEST (14:41 UT) on 3 April.

Jules Verne demonstrates key capabilities
Jules Verne ATV today demonstrated its ability to navigate safely from a point 39 km behind the ISS to a stand-off point just 3.5 km away using relative GPS navigation. The vessel then executed an Escape manoeuvre commanded from the ATV Control Centre in which the craft flew off to a safe distance.

"All systems were completely nominal, which is very satisfying for this first day of really testing the rendezvous capability of the spacecraft," said John Ellwood, ESA ATV Project Manager.

Today's demonstration also confirmed Jules Verne is able to establish a continuous two-way data link with the ISS. Using the high-rate S-band communication link, which was switched on at a distance of 40 km from the ISS, Jules Verne for the first time conducted relative GPS (Global Positioning Satellite) measurements with the Station.

Relative GPS is a navigation technique executed by computers between the ATV's GPS receiver and the ISS GPS receiver that enables ATV to navigate relative to the Station with very high accuracy.

For both the flight control team in Toulouse and the ISS flight crew, this 64 kilobits/sec transmission rate also made it possible to test all the crucial data and communication connections between the two spacecraft, including some monitoring capability on both sides to send and receive communications.

When Jules Verne reached the closest holding position, at 3.5 km from the ISS, the bus-sized spaceship turned on its external tracking lights and activated the Russian-built Kurs rendezvous radar with equipment on both spacecraft.

The robust and historical Kurs system, a concept which has been used for decades, provides relative distance and velocity with independent data for the crew monitoring during Jules Verne's final approach to the Station.

During the demonstration the astronauts on board ISS reported they were able to see Jules Verne with the naked eye. The spacecraft could also be seen via screens inside the ATV Control Centre.

"For the flight control team the sight of the ATV thrusters firing was particularly exciting and brought the whole thing to life," said Bob Chesson, Head of ESA's human spaceflight operations. "It was fantastic to be reunited with Jules Verne and to see it performing so perfectly which is very promising for the days to come."

Data collected throughout the first demonstration day will now be analysed by the ESA JADOR (Jules Verne ATV Demonstration Objectives Report) team. A report will be submitted to the ISS Mission Management Team. After an assessment and authorisation on 30 March, ATV can proceed to Demonstration Day 2 on Monday (including an approach to within 11 m of the ISS).

"The first analysis from the JADOR are looking pretty good. We are going to spend some hours now analysing them further. We are quite confident," said Alberto Novelli, ESA's Mission Director at ATV-CC.

.


Related Links
Jules Verne ATV
All about the robots on Earth and beyond!






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





ROBO SPACE
High-Schoolers Go Into Overdrive At FIRST Robotics Competition
Los Angeles CA (SPX) Mar 27, 2008
Fifty-two teams from high schools in Southern California, Arizona and New Hampshire competed in the Los Angeles FIRST Robotics Competition last Friday and Saturday. Five teams, one sponsored by JPL and another sponsored by the Dryden Flight Research Center, will go on to the worldwide competition, to be held April 17-19 in Atlanta. The teams from Hope Chapel Academy, Hermosa Beach ... read more


ROBO SPACE
Crafty Tricks For Finding Moon Water

NASA Awards Contracts For Design Study Of Lunar Landing Craft

NASA prepares for Moonbuggy Race

New Lunar South Polar Maps From SMART-1

ROBO SPACE
Spirit Begins Preparing For Another Winter Hibernation

Mars Robotic Rover Opportunity Finds More Evidence Of Ancient Water

Wataire's Water-From-Air Units Get Thumbs Up In Mars Mission Simulation

Sturdy Rover Gets No Penalty For Tilting

ROBO SPACE
Hawaii Space Partnership Opens Doors For Mines Students

Radiation Resistant Rotifers

Ares Tests Roll Along

Odyssey Moon Announces Commercial Launch Services Agreement

ROBO SPACE
China's space development can pose military threat: Japan

Brazil To Deepen Space Cooperation With China

China Approves Second-Phase Lunar Probe Program

Cassini Tastes Organic Material At Saturn's Geyser Moon

ROBO SPACE
Japan celebrates Shuttle Endeavour mission

Astronauts Successfully Complete Fifth Spacewalk

ISS astronauts take rest day after setting up giant robot

Astronauts assemble Canadian robot on 7-hour walk

ROBO SPACE
German military satellite launched by Russia: report

Russian Rockot Launch Vehicle To Orbit European GOCE Satellite

Cape Canaveral Airmen Launch Delta II Rocket

Pratt And Whitney Rocketdyne Rocket Engine Powers Latest GPS Satellite Into Space

ROBO SPACE
Googling Alien Life

Searching For Earth

Methane Spotted On Extrasolar Planet

Spitzer Finds Organics And Water Where New Planets May Grow

ROBO SPACE
Researchers Explore Materials Degradation In Space

Satellites Take Sustainability To New Heights

CEE Researchers Unravel The Secrets Of Spider Silk's Strength

Russian-Launched US Satellite Unlikely To Reach Target Orbit




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement