Flight research on natural laminar flow applications

摘要: Natural laminar flow (NLF) is clearly one of the most potentially attractive drag reduction technologies by virtue its relative simplicity. NLF achieved passively, that is, design surface shapes to produce favorable pressure gradients. However, it not without challenges and limitations. This chapter describes significant achieving maintaining documents certain limitations for practical applications. A brief review history more recent flight experiments given, followed a summary lessons learned which are pertinent future The also summarizes important progress in test techniques, particularly visualization hot-film techniques boundary-layer measurements flight.