Our Talon accelerated as it climbed toward pattern altitude—1,500 feet AGL. When I turned onto the outside downwind, about two miles west of the inside downwind, the jet slowed its acceleration but continued climbing. At pattern altitude, I leveled off, and our airspeed stabilized at 300 KIAS. During each turn, we lost about 10–15 knots, but once wings-level again, the jet quickly accelerated back to 300. After each turn, I asked the student to confirm the throttles hadn’t moved. Each t...