Archer and Anduril unveil Thunder — a dual-use autonomous VTOL, and Archer stock jumps 20%

Archer Aviation and Anduril unveiled a jointly developed autonomous VTOL platform for both commercial logistics and defense — a hybrid-electric tilt-rotor carrying roughly 400kg over 500km-plus, with full autonomous takeoff and cruise. Anduril showed the military variant, Thunder, a Group 5 autonomous attack rotorcraft meant to fly alongside crewed aircraft as a "loyal wingman." It's the first product of the strategic partnership the two announced in 2025; first flight is targeted for 2027, and Archer said it would name initial commercial customers within the week. Archer shares rose about 20% on the day.

The unveiling capped an outsized Farnborough moment for the sector: hours earlier, Vertical Aerospace flew what it called the first public eVTOL transition flight at the airshow, moving its Valo prototype from vertical lift to wingborne flight and back before regulators and operators.

Why it matters

For a company whose stock had been down with the whole eVTOL cohort, a defense pivot with Anduril reframes the story: military logistics and loyal-wingman programs are a revenue line that doesn't wait on FAA passenger certification, and Anduril's procurement access is the kind few air-taxi startups can reach. It also hedges Archer's civil bet — the ACES charging consortium it launched days ago is the commercial half of a now explicitly two-sided strategy. The risk is focus: a hybrid platform and a 2027 first-flight target add a program on top of an aircraft still working toward commercial entry.

What to watch

The first commercial customers Archer promised this week, any Anduril/DoD program-of-record attached to Thunder, and whether the 2027 first-flight date holds against Archer's existing certification timeline.