Airbus also hopes to complete a separate Space Systems strategy review in the fourth quarter as it reels from 1.5 billion euros ($1.6 billion) of recent charges, they said.
But even beforehand, it aims to announce a restructuring of Space Systems activities in September and has launched an urgent cash containment plan across the wider Defence and Space unit, where managers have declared the cost situation "critical".
Airbus declined to comment.
CEO Guillaume Faury told reporters last week that Airbus was looking at opportunities to create scale in defence, space and particularly satellites markets where traditional players have been heavily disrupted by the success of new constellations.
La Tribune and Reuters reported earlier this month that Airbus and France's Thales (TCFP.PA) were exploring a tie-up of space activities as new competition disrupts the sector.
On Monday, industry sources said those talks also include Leonardo (LDOF.MI), partner to Thales in a pair of ventures focusing on satellite manufacturing and the services business.
None of the companies involved had any comment.
Airbus is one of the two largest satellite makers in Europe alongside Thales Alenia Space (TAS), two-thirds owned by Thales and one-third by Leonardo. Telespazio, in which Leonardo owns two thirds and Thales the rest, provides satellite services.
Europe's biggest satellite firms have traditionally been geared towards one-off satellites parked in geostationary orbit, deploying ambitious but costly technology. They face increasing competition from small satellites in low Earth orbit built at a fraction of the cost by new rivals led by Elon Musk's Starlink.
Last week, a senior Leonardo executive said the European satellite sector needed to consolidate to keep pace with Musk's rapidly-expanding network.
"This evolution needs probably to take into account some form of consolidation," Lorenzo Mariani, co-general manager of Leonardo, told Reuters.
In June, Airbus announced a 900-million-euro charge for Space Systems activities, on top of a 600-million-euro hit last year. The hole emerged after an audit of future revenues from high-tech projects including OneSat and EGNOS.
Airbus and Leonardo both announce detailed half-year earnings on Tuesday.
($1 = 0.9246 euros)
