Boeing Australia's MQ-28 Ghost Bat is the one loyal-wingman aircraft already flying in the same size and role bracket the RAF has described for Brontanax. Watching how Ghost Bat integrates with the Royal Australian Air Force's F-35A and E-7A fleets over the next eighteen months is probably the most useful predictor available for what the RAF should expect from Brontanax, and where BAE Systems will need to leapfrog.
Ghost Bat's public trajectory has been uneven but broadly positive. The aircraft has flown, has demonstrated teaming with crewed platforms, and has attracted serious international interest, notably from the US Air Force which selected the design for its own experimentation programmes. The airframe has proven adequate; the harder work has been in the mission-system integration, the ground segment and the operational concepts that turn a flying demonstrator into a fielded capability.
That is exactly the ground Brontanax will have to cover. The RAF can learn a great deal from watching which Ghost Bat integration steps went smoothly, which required rework, and how long each phase actually took versus the original schedule. In particular, the RAAF's experience with data-link latency, sensor fusion between crewed and uncrewed platforms, and pilot workload during real teaming missions is directly relevant to StormFighter.
Where BAE Systems will try to leapfrog Boeing Australia is in two specific areas. The first is signature — Brontanax is being designed with a more explicit low-observable bias than Ghost Bat, which is optimised for adjunct rather than penetrating roles. The second is European ecosystem fit. Ghost Bat was designed around Australian and US platforms; Brontanax is being designed from the start to plug into a European sixth-generation architecture through GCAP.
The parallel also carries a warning. Ghost Bat has taken longer to reach operational relevance than early public statements suggested, and its export success outside the US remains limited. If Brontanax follows a similar curve, the aircraft will be technically credible but commercially modest. Avoiding that outcome is largely a matter of programme discipline over the next three years.