To the Stratosphere

Solar-powered fixed-wing aircraft attached to a high-altitude balloon -  Ondirae Abdullah-Robinson

Defence Blog reports:

U.S. Army soldiers attached a solar-powered fixed-wing aircraft to a high-altitude balloon at Orote Airfield on Naval Station Guam on June 24, 2026, and prepared to launch the combination into the stratosphere as part of Valiant Shield 2026, the largest U.S.-led joint exercise in the Indo-Pacific.

This aircraft can cruise indefinitely at an altitude of 60,000 feet, which is 50% higher than commercial airliners. This is like U-2 territory (U-2 can reach 70,000 feet). Spy satellites will only have a specific spot on Earth visible for like ten minutes out of every 90 minute orbit, plus you only need a conventional radio to talk to an aircraft, not a specialized satellite communicator. Not sure why you can't use a conventional radio to talk to a satellite. Maybe because spy satellites have low power transmitters so you need a directional antennae to pick up their signal.

Previous posts about balloons and high altitude.