Astrium To Build Two New Research Satellites For NASA | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Recent Daily Episodes

Episode Date

AMA Drone Report

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday

Airborne-Thursday

Airborne-Friday

Airborne-Unmanned w/AUVSI

Airborne On ANN

AMA 10.19.17

Airborne 10.16.17

Airborne 10.17.17

Airborne 10.18.17

Airborne 10.19.17

Airborne 10.20.17

Airborne-Unmanned 10.17.17

Airborne-YouTube

AMA 10.19.17

Airborne 10.16.17

Airborne 10.17.17

Airborne 10.18.17

Airborne 10.19.17

Airborne 10.20.17

Airborne-Unmanned 10.17.17

NEW!!! 2017 AirVenture Innovation Preview -- YouTube Presentation / Vimeo Presentation

Sun, Dec 02, 2012

Astrium To Build Two New Research Satellites For NASA

Twin Grace Follow-On Satellites To Investigate The Earth's Gravity Field

European space technology company Astrium has been commissioned to build two new research satellites for NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, CA. The agreement was signed Friday in Friedrichshafen, Germany. For a minimum of five years from August 2017, the Gravity Recovery and Climate Experiment Follow-On (Grace FO) mission will continue the extremely accurate measurement data collection of the first twin Grace satellites, which have been in orbit since 17 March 2002.

Astrium’s Grace satellites have been making a hugely important contribution to global climate research since 2002. Based on their observations of changes in the Earth’s gravity field over time, geoscientists are gaining new insights into the dynamic processes in the planet’s interior, into deep and surface currents in the oceans, and into variations in the extent of ice coverage at the poles, in Greenland and over mountain ranges. The original Grace mission allowed scientists for the first time to identify which masses of water, ice and solid material are moving; Grace is even able to provide long-term observation of water table levels around the world.

Like their predecessors, the Grace FO satellites will be placed in a polar orbit at an altitude of some 310 miles and follow each other 135 miles apart. As they fly, the two satellites constantly and extremely precisely determine the distance between them, which varies under the influence of the Earth’s gravity; this fluctuating distance provides the data for continued measurement of our planet’s gravity field.

The measurements taken by the Grace FO satellites will be exceptionally accurate because their positions will be minutely ascertained using on-board GPS (Global Positioning System) receivers, while a satellite-to-satellite microwave link will enable the exact distance between them to be calculated to within a few thousandths of a millimetre. In contrast to the original Grace mission, the distance between the new satellites will also be measured using lasers – a technological experiment in preparation for future generations of gravity-research satellites.
 
Throughout the five-year mission, these measurements will be used to generate an updated model of the Earth’s gravitational field every 30 days. In addition, every day each satellite will create up to 200 profiles of temperature distribution and water vapour content in the atmosphere and ionosphere.

FMI: www.nasa.gov, www.astrium.eads.net

 


Advertisement

More News

Airborne 10.20.17: Santa Monica Setback, Red Bull Aviatrix, C-49 Flies Again

Also: HondaJet World Tour, Barnstorming, SpaceX, Dauntless, Fixed-Wing VTOL, Gravitational-Waves, Swedish Drones The City of Santa Monica may now proceed with shortening the runway>[...]

AMA Drone Report 10.19.17: Drone/Airliner Midair?, FAA Sued, CNN 107 Waiver

Also: Swedish Drone Ban Lifted, Rocky Mountain Hobby-Expo, Drone Shark Detection, Kittyhawk DJI Sync 2.0 Recent reports about a midair collision between a jet and a drone have been>[...]

RFP: ANN Seeking New Site/Facility For Major Studio Upgrade

It's Official: Aggressive Upgrades For New Airborne Programs WILL Require New Digs It's been in development for years, but we're getting to a point where we think we can pull off s>[...]

Airborne-Unmanned 10.17.17: Eagles v Drones, DJI AeroScope, Drone Policy

Also: AeroVironment Award, Washington State Patrol, Altavian Nova UAS, Robotaxis The French Military is training four Golden Eagles to attack drones in flight as a way to defend ag>[...]

Aero-News: Quote of the Day (10.22.17)

Aero-News Quote of the Day "National Airlines has tirelessly supported Americans at home and abroad for nearly 20 years. In the case of Puerto Rico, National was able to mobilize q>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2017 Web Development & Design by Pauli Systems, LC