000168237 001__ 168237
000168237 005__ 20260128162438.0
000168237 0247_ $$2doi$$a10.1007/s00348-026-04176-4
000168237 0248_ $$2sideral$$a147728
000168237 037__ $$aART-2026-147728
000168237 041__ $$aeng
000168237 100__ $$aInnocenzi, P.
000168237 245__ $$aPhotogrammetry Measurements of Blunt Body Dynamics in a Supersonic Wind Tunnel
000168237 260__ $$c2026
000168237 5060_ $$aAccess copy available to the general public$$fUnrestricted
000168237 5203_ $$aThis paper presents free-oscillation experiments of a blunt body conducted in a high-speed wind tunnel, with the model motion measured using photogrammetry. A faceted blunt model, mounted on a spherical air bearing, is free to rotate in roll, pitch, and yaw in response to the freestream flow (M = 2). Four synchronised high-speed cameras capture the model from multiple angles, and the unique coded targets printed on the model’s surface are reconstructed as points in 3D space, achieving accuracy within for both static and dynamic measurements. The Kabsch algorithm is used to find the optimal rotation between two point clouds, hence allowing reconstruction of the angular motion over the entire run. The method shows promise for free-oscillation tests in high-speed ground facilities, offering advantages over ballistic range and free-flight tests such as a constant freestream velocity and hundreds of oscillation cycles. This capability enables the observation of dynamic instabilities that develop over extended timescales, thus revealing a precessional instability previously reported only for slender bodies at hypersonic Mach numbers.
000168237 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000168237 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000168237 700__ $$aBruce, P.J.K.
000168237 700__ $$0(orcid)0000-0001-8342-6573$$aNavarro-Martinez, Salvador$$uUniversidad de Zaragoza
000168237 7102_ $$15001$$2600$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Mecánica de Fluidos
000168237 773__ $$g67, 23 (2026)$$pExp. fluids$$tEXPERIMENTS IN FLUIDS$$x0723-4864
000168237 8564_ $$s7378973$$uhttps://zaguan.unizar.es/record/168237/files/texto_completo.pdf$$yVersión publicada
000168237 8564_ $$s2549981$$uhttps://zaguan.unizar.es/record/168237/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000168237 909CO $$ooai:zaguan.unizar.es:168237$$particulos$$pdriver
000168237 951__ $$a2026-01-28-15:38:29
000168237 980__ $$aARTICLE