Scholarlink

Porpoising is a well-known problem in race cars, able to downgrade performance, manifesting itself as a mainly bouncing oscillation, due to dependency of aerodynamic downforce to ride height. Different switching mechanisms can explain the onset of such self-excited oscillations, in which ground effect plays a crucial role. This study investigates a possible cause of instability occurring in the aerodynamic load enhancement region, just before static stall of the diffuser appears. A preliminary analysis is presented, with the aid of stability maps, based on minimal models including interaction between non-stationary aerodynamic loads and suspension dynamics. The results suggest possible improvements of stability by fine-tuning of structural and aerodynamic coefficients.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

An Investigation on the Porpoising Aeroelastic Instability in Race Cars

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Daniele Gualdi,
  • Alessandro De Felice,
  • Enrico Stalio,
  • Silvio Sorrentino

摘要

Porpoising is a well-known problem in race cars, able to downgrade performance, manifesting itself as a mainly bouncing oscillation, due to dependency of aerodynamic downforce to ride height. Different switching mechanisms can explain the onset of such self-excited oscillations, in which ground effect plays a crucial role. This study investigates a possible cause of instability occurring in the aerodynamic load enhancement region, just before static stall of the diffuser appears. A preliminary analysis is presented, with the aid of stability maps, based on minimal models including interaction between non-stationary aerodynamic loads and suspension dynamics. The results suggest possible improvements of stability by fine-tuning of structural and aerodynamic coefficients.