Workshop Approach

• The workshop will start with a talk from the US Army to discuss current and future vehicles. The impact that dynamic stall (DS) has on currently deployed vehicles, and the issues that dynamic stall may have on future designs will be discussed.
• The Workshop will be divided into 4 topic areas: Experimental, Computational, Theoretical/Empirical Modeling, Control of DS
• A group of experts that lead research in each area will work together to create a 1-hour presentation that discusses the state of the art, what we know does not work, and issues that still remain to be resolved. This can/will include research and advances made by these experts – but will also include other research/advances that the group feels are important. See Questionnaire later in this package for some guidance in working with your group.
• A few 10-minute vignette presentations from attendees not in the “SotA” expert groups will be sought. If there are not enough, we can fill in with information not in the one-hour presentation
• Panel discussion on the topic area with the group experts serving as the panel members
• Archival papers that discuss each topic area as well as the kickoff discussion will be written by the experts. A special issue/section in a top journal is being negotiated. Conference paper(s) discussing the workshop will also be proposed to promote dissemination of the ideas.

Purpose of the Workshop

• This workshop is designed to impart to the broader community the advances and current state of the art in the understanding and prediction of rotorcraft-related dynamic stall.
• It is important that these capabilities are more widely known; even with the plethora of peer-reviewed journals, there is still significant duplication on topics that have already been resolved, such as the modeling 3D separation in 2D isn’t sufficient.
• It is further necessary to determine the future path of research in this area; what gaps in knowledge or roadblocks in methods development still remain?
• In particular, active flow control (AFC) of dynamic stall has had significant funding in the past, but there are still no systems installed on current vehicles. Are there physics that can be exploited to make AFC viable?
• Are there results from dynamic stall research on rotorcraft that can be leveraged in other fields such as fixed wing, wind/wave energy, and engine systems?