Subscribe to our free daily newsletters
  GPS News  

Subscribe to our free daily newsletters

Galileo quartet fuelled and ready to fly
by Staff Writers
Paris (ESA) Nov 22, 2017

Illustration of a Galileo GPS satellite in orbit.

Europe's next four Galileo navigation satellites and the Ariane 5 rocket due to lift them into orbit are being readied for their 12 December launch from Europe's Spaceport in Kourou, French Guiana.

Tuesday saw Galileo satellites 19-22 declared ready for flight, along with their Ariane. Combined activities are now under way, culminating in the satellites meeting their rocket in the Final Assembly Building.

The satellites were flown in pairs to French Guiana last month. Once safely unboxed in the Spaceport's cleanroom environment, they were tested to ensure they had suffered no damage during their transatlantic flights.

Next came their 'fit check', when they were mechanically and electrically linked one by one to the dispenser that will carry them during their ascent to the target 23 500 km-altitude orbit, before releasing them into space.

Last Friday saw the satellites filled with enough fuel to fine-tune their orbits and orientation during their projected 12 year working lives. Next, they will be attached to their dispenser together for the final time.

In parallel, their customised Ariane 5 is being assembled. Two solid-propellant boosters were mated with its main cryogenic stage before the addition of the interstage that carries the electronics to control the vehicle.

Next came the addition of the storable propellant stage, powered by a reignitable engine, which will deliver the quartet to their target orbit.

Once fully checked, the Ariane will be moved to the final building for the addition of the satellites atop their dispenser, sealed within their protective fairing.

This launch will bring the total Galileo constellation to 22, boosting the global availability of navigation signals. Galileo began Initial Services just under a year ago, the first step before full operations, on 15 December.

The current Full Operational Capability phase is fully funded by the EU and managed by the Commission. The Commission and ESA have a delegation agreement by which ESA acts as design and procurement agent on behalf of the Commission.

Harris develops fully digital navigation payload for future GPS III sats
Melbourne FL (SPX) Nov 10, 2017
Harris Corporation has completed development of the company's fully digital Mission Data Unit (MDU), which is at the heart of its navigation payload for Lockheed Martin's GPS III satellites 11 and beyond. The current Harris payload for GPS III space vehicles (SVs) 1-10 includes a greater than three times reduction in range error, up to eight times increase in anti-jamming power, added sign ... read more

Related Links
Galileo at EU
GPS Applications, Technology and Suppliers

Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once

credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly

paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks DiggDigg RedditReddit GoogleGoogle

Intercropping formula promises food security in Sahel Africa

Urbanization may have a positive effect on the soils

Portuguese cattle farmers desperately wait for rain

Crunch time for food security

Argonne to install Comanche system to explore ARM technology for HPC

Strain-free epitaxy of germanium film on mica

Three-dimensional nanomagnets for the computer of tomorrow

Scientists create a prototype neural network based on memristors

Sky-high Wi-Fi ready to fly

Massive search expands for US sailors after Philippine Sea air crash

US ends search for sailors after Philippine Sea air crash

Jumbo sale: two 747 jets auctioned on Chinese online platform

Driverless, electric future just round the corner for urban cars

Hydrogen cars for the masses one step closer to reality

'Robo-taxis' hold promise, and perils, for automakers

Singapore to deploy driverless buses from 2022: minister

Europe embraces Black Friday sales with some reservations

Philippines offers China chance to run third telecom service

Got a spare $71m? How about a single Hong Kong apartment?

Studies suggests link between testosterone, stock market instability

Brazil exports murder-tainted illegal logging: Greenpeace

Amazon's recovery from forest losses limited by climate change

Poland says compliant with EU court order against ancient forest logging

How to manage forest pests in the Anthropocene? Bring theory

NASA's TSIS-1 keeps an eye on Sun's power over ozone

Forty years of Meteosat

China launches remote sensing satellites in multiple launches

Groundwater depletion maybe major source of atmospheric carbon dioxide

Ceria nanoparticles: It is the surface that matters

Semiconducting carbon nanotubes can reduce noise in interconnects

Manganese dioxide shows potential in micromotors

Promising sensors for submarines, mines and spacecraft

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

The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news 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. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. 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