There has been a worldwide interest to develop a supersonic business jet (SSBJ) for a minimum range of 4000 nm with low sonic boom intensity and high fuel efficiency. An SSBJ design model is developed in the GENUS aircraft conceptual design environment. With the design model, a low-boom low-drag SSBJ concept is designed and optimized. This article studies the design concept for its operational performances. The sustained supersonic cruise flight is studied to find out the fuel-efficient Mach number and altitude combinations. The combined supersonic and subsonic cruise flight scenarios are studied to evaluate the feasibility of boom-free flight routes. The one-stop supersonic cruise flight scenario is studied to compare the fuel consumption and time advantage over subsonic airliners. The off-design sonic boom intensity is studied to explore the operational space assuming there would be a sonic boom intensity limit in the future. Through the studies, it is revealed that there is a corresponding most fuel-efficient operating altitude for a specific cruise Mach number. To operate the aircraft near the cutoff Mach number leads to both increases in the fuel consumption (6.3%–8.1%) and the mission time (11.7%–13.1%). The business-class supersonic transport (231 g/PAX/km) consumes nearly three times fuel as the economic-class supersonic transport (77 g/PAX/km), which is still far more than the economic-class subsonic transport (20 g/PAX/km). Off-design sonic boom intensity studies reveal different trends against the common understanding: the sonic boom intensity does not necessarily decrease as the altitude increases; the sonic boom intensity does not necessarily decrease as the Mach number decreases.

在全世界范围内，开发一种最小声波强度和高燃油效率的最小4000 nm范围的超音速公务机（SSBJ）引起了人们的兴趣。在GENUS飞机概念设计环境中开发了SSBJ设计模型。利用该设计模型，设计并优化了一种低臂低阻力SSBJ概念。本文研究其运行性能的设计概念。研究了持续的超音速巡航飞行，以找出节油的马赫数和高度组合。研究了超音速和亚音速巡航组合飞行场景，以评估无臂飞行路线的可行性。研究了一站式超音速巡航飞行方案，以比较油耗和时间优势。假设将来会出现声波强度限制，则对非设计的声波强度进行研究，以探索操作空间。通过研究表明，对于特定的巡航马赫数，存在相应的最省油的运行高度。在临界点附近操作飞机会导致油耗增加（6.3％–8.1％）和任务时间（11.7％–13.1％）都增加。商业级超音速运输（231 g / PAX / km）消耗的燃油几乎是经济级超音速运输（77 g / PAX / km）的三倍，仍然远远超过经济级超音速运输（20 g / PAX / km）。偏离设计的音爆强度研究揭示了不同的趋势，这与人们的普遍理解相反：音爆强度并不一定随高度的增加而降低；反之，