Dual-Use Aerial Ambiguity

In the sterile environs of Farnborough International Airshow, a question from defence technology company Anduril had spawned a new dual-use VTOL platform, birthing two identities: Thunder and Halo. The former would serve as the defence variant, unveiled by Anduril itself, while the latter was being developed by Archer Aviation for commercial cargo and logistics missions.

Archer's chief technology officer, Tom Muniz, offered insights into this development, clarifying that the two aircraft were not separate entities, but rather distinct variants of a single platform. "The way to think about it is one aircraft, and essentially the names are just whether it’s the civil variant or the defence variant," he explained.

Both Thunder and Halo shared the same airframe, series hybrid-electric powertrain, and core systems. Mission equipment and payloads would then determine which variant operated as Thunder or Halo. Archer's technological focus on electric propulsion, battery, and manufacturing had been honed over approximately eight years, with Midnight serving as the precursor to this new development.

As Midnight moved further into flight testing and certification, engineering capacity became available for consideration of another class of aircraft. Anduril's exploration of an emerging requirement for a substantially longer-range autonomous VTOL aircraft led it to select Archer as its development partner.

The resulting clean-sheet platform combined wingborne cruise with two optimum-speed tiltrotors. Unlike Midnight's all-electric powertrain, the new system employed series hybrid technology, where jet fuel generated electricity distributed to the aircraft's propulsion system. This retained some of the benefits of distributed electric propulsion while addressing range and endurance limitations associated with battery-only aircraft.

Archer had yet to publish targeted figures for the platform's speed, range, or payload capacity. Anduril would install its mission systems and payloads to transform the core aircraft into Thunder, an autonomous attack platform intended to operate alongside crewed attack and assault aircraft.

Muniz observed that beginning with a defence application allowed Archer a more efficient route for introducing the hybrid-electric system and proving its capabilities in operational use. "Having an initial defence application gives us a more efficient path to get some new technology into market," he said, acknowledging potential future applications or incorporation of this technology into later versions of the platform.

Full-scale surrogate aircraft had already completed multiple test flights, with the first flight of the new platform planned for 2027. For the commercial market, Halo was being positioned for offshore energy support, freight, maritime operations, and humanitarian or medical cargo missions. Marubeni Aerospace Corporation, a Japanese company, had been named as its first strategic launch partner.

Despite Archer's expansion into hybrid propulsion, autonomous cargo operations, and defence, Midnight remained the company's first aircraft intended to enter commercial service. The certification programme was progressing well, with no firm date attached to its completion.

"It’s always so hard to talk about timeframes and certification," Muniz said. "Our job is to make safe aircraft, and we’re really closely partnered with regulators, but it’s really up to them to decide when we actually get the ticket.