Toward improved CFD predictions of slender airframe aerodynamics using the F-16XL aircraft (CAWAPI-2)

• A coordinated project has been underway to improve CFD predictions of slender airframe aerodynamics. The work is focused on two flow conditions and leverages a unique flight data set obtained with an F-16XL aircraft. These conditions, a low-speed high angle-of-attack case and a transonic low angle-of-attack case, were selected from a prior prediction campaign wherein the CFD failed to provide acceptable results. In this paper the background, objectives and approach to the current project are presented. The work embodies predictions from multiple numerical formulations that are contributed from multiple organizations, and the context of this campaign to other multi-code, multi-organizational efforts is included. The relevance of this body of work toward future supersonic commercial transport concepts is also briefly addressed.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Rymd- och flygteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Aerospace Engineering (hsv//eng)

Keyword

Aerospace engineering

Airframes

Angle of attack

Forecasting

Structural frames

Current projects

F-16XL aircraft

Flight data

Flow condition

Multi-code

Multiple organizations

Numerical formulation

Supersonic commercial transports

Computational fluid dynamics

Publication and Content Type

ref (subject category)

art (subject category)