Schemed Power-augmented Flow for Wing-in-ground Effect Craft in Cruise

作者：Yang Wei; Yang Zhigang^*

来源：Chinese Journal of Aeronautics, 2011, 24(2): 119-126.

DOI：10.1016/S1000-9361(11)60015-0

• ground effect
• power-augmented ram
• aerodynamics
• engine models
• numerical simulations

To provide detailed insight into schemed power-augmented flow for wing-in-ground effect (WIG) craft in view of the concept of cruising with power assistance, this paper presents a numerical study. The engine installed before the wing for power-augmented flow is replaced by a simplified engine model in the simulations, and is considered to be equipped with a thrust vector nozzle. Flow features with different deflected nozzle angles are studied. Comparisons are made on aerodynamics to evaluate performance of power-augmented ram (PAR) modes in cruise. Considerable schemes of power-augmented flow in cruise are described. The air blown from the PAR engine accelerates the flow around wing and a high-speed attached flow near the trailing edge is recorded for certain deflected nozzle angles. This effect takes place and therefore the separation is prevented not only at the trailing edge but also on the whole upper side. The realization of suction varies with PAR modes. It is also found that scheme of blowing air under the wing for PAR engine is aerodynamically not efficient in cruise. The power-augmented flow is extremely complicated. The numerical results give clear depiction of the flow. Optimal scheme of power-augmented flow with respect to the craft in cruise depends on the specific engines and the flight regimes.

• 出版日期2011-4
• 单位同济大学