Variable fidelity methods and surrogate modeling of critical loads on X-31 aircraft

• This paper presents a method for effcient creation of the aerodynamic database for the X-31 experimental aircraft, from low fidelity (Euler) and high fidelity (RANS) CFD. The challenge is to obtain good data for extreme flight conditions. A co-Kriging interpolation model for aerodynamic moments, forces and span loads is used, with an additional decision support system (DSS) using Proper Orthogonal Decomposition for data reduction.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Farkostteknik (hsv//swe)

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

Keyword

Aerodynamic database

Aerodynamic moment

Decision support system (dss)

Flight conditions

Low fidelities

Proper orthogonal decompositions

Surrogate modeling

Variable fidelity

Publication and Content Type

ref (subject category)

kon (subject category)