The Turbulence Flow Control group at the University of Warwick has been studying non-powered (passive) flow control actuators as a means of reducing drag for some time, with the goal of developing flow - control technologies capable of major drag reductions on passenger jet aircraft. (treehugger.com)
For more than a decade, the threat of terrorism has contributed to rising oil prices, global instability and insecurity in major financial centres — in other words, it's been a major drag on business. (canadianbusiness.com)
While the dive in oil prices has been a major drag on financial markets, the 55 percent slide in crude oil prices since June is good news for some. (cnbc.com)