The high-profile mission comes as Europe seeks to reduce its reliance on the United States for security while the European space industry struggles to remain competitive with Elon Musk's SpaceX.

Following several postponements, the Ariane 6 rocket is scheduled to blast off from Europe's spaceport in Kourou, French Guiana at 1:24 pm (1624 GMT) Monday.

Under a light tropical rain, the frame called a gantry was removed from the launchpad overnight, unsheathing the rocket a few hours before blast off.

The launcher will carry a French military satellite, which will be placed in orbit at an altitude of around 800 kilometres (500 miles).

The CSO-3 satellite is expected to strengthen France's military autonomy and improve its army's intelligence capabilities.

Europe has not been able to use Russia's Soyuz rockets since Moscow invaded Ukraine in 2022, while the workhorse Ariane 5 was retired in 2023.

Europe "cannot have a space policy today without having the means to send our satellites into space independently," Lionel Suchet, the acting head of French space agency CNES, told AFP.

- 'Strategic autonomy' -

Initially planned for December, the mission was delayed until February 26 and then to March 3.

It will be the second flight for Ariane 6, after its first successful launch in July.

"This mission is just as important as the inaugural flight -- it must be successful," CNES director of space transport Carine Leveau told AFP.

CSO-3 will complete a network of three French military imaging satellites, with the first two launched in 2018 and 2020 on Soyuz rockets.

"It's always better to have your own launcher and to fire it from home," General Philippe Steininger, a CNES consultant, told AFP.

"For several years we have been confronted with SpaceX, Elon Musk and his sometimes very aggressive positions, made possible by massive financial support from the US," France's research minister Philippe Baptiste told the newspaper La Tribune.

Musk's new "dual role" as a close adviser to US President Donald Trump could have major repercussions throughout the space industry, said Baptiste, a former CNES head.

"The concept of strategic autonomy, once mocked as a French whim, is at the heart of the Europe of tomorrow."

Given the military role of the satellite, strict security precautions were being taken to limit access at the spaceport on the northern coast of South America, with three Rafale fighter jets deployed to patrol the surrounding skies.

The satellites have "orbiting cameras that take images in both visible and infrared light all over the globe, which is very important for military operations," Michel Sayegh, the head of the French government's armament agency DGA, told AFP.

- 'Autonomous access to space' -

After being grounded for two years due to an accident that resulted in the loss of two satellites, Europe's smaller Vega-C launcher did not resume flights until December 2024.

The mishap left Europe without a way to launch satellites into orbit for a year, following delays to Ariane 6 and the end of cooperation with Russia.

"It was very important for France and for Europe to regain this autonomous access to space," Suchet told AFP, emphasising that all launches were "risky".

Some of the images taken by the CSO-3 satellite will be shared with Germany, Belgium and Sweden.

The launch will be the first of 32 planned missions for the Ariane 6 over the coming years from Kourou.

"The whole world is watching us," David Cavailloles, chief executive of French aerospace company Arianespace, told AFP last month.

neo-dl/lth

X