Exhaust Designs in Stealth AircraftThe B-2 is not the only stealth aircraft to employ unconventional exhaust solutions. As can be noticed, stealth aircraft exhaust designs vary depending on operational requirements, requiring different tradeoffs to achieve the goal. The Second B-21 RaiderOn Sept. 11, 2025, the U.S. Air Force’s second flight-worthy B-21 Raider, known as T-2, successfully completed its maiden flight. With T-2 now flying, the Air Force can divide tasks between the two airborne Raiders and progress into the next phase of testing. The service will in fact use this second B-21, which is production-representative, to expand testing into weapons integration and sustainment assessments.