ISSN 2079-3537      

 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                             





Scientific Visualization, 2021, volume 13, number 1, pages 69 - 82, DOI: 10.26583/sv.13.1.06

On the development of aeroballistic experiment techniques for flow visualization

Authors: S.I. Gerasimov1,A,B,C,D, V.I. Erofeev2,A,D, V.A. Kikeev3,A,D, K.V. Totyshev4,C, E. G. Kosyak5,B, P. G. Kuznetsov6,B, R.V. Gerasimova7,B

A Institute for Problems of Mechanical Engineering, Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, 603024 Russia

B Sarov State Physics and Technical Institute National Research Nuclear University MEPhI, Sarov, 607186 Russia

C Russian Federal Nuclear Center All-Russian Research Institute of Experimental Physics, Sarov, 607188 Russia

D Nizhny Novgorod State Technical University, Nizhny Novgorod, 603950 Russia

1 ORCID: 0000-0002-6850-0816, s.i.gerasimov@mail.ru

2 ORCID: 0000-0002-6637-5564, erf04@mts-nn.ru

3 ORCID: 0000-0002-2375-0803, vkikeev@mail.ru

4 ORCID: 0000-0002-7141-0408, ktotyshev@yandex.ru

5 ORCID: 0000-0001-6291-2396, keg@sarfti.ru

6 ORCID: 0000-0003-2691-206X, kpg@sarfti.ru

7 ORCID: 0000-0002-2711-3975, grv@sarfti.ru

 

Abstract

The schemes of shadow rendering, supplementing the methodology of aeroballistic experiment, consisting in the ejection model, mounted in a special separable pallet, ballistic installation; the separation and capture of the pallet by the clipper; the span of the model with given initial conditions of motion speed and angle of attack on the measuring site aeroballistic tracks; contactless external trajectory registration model of the synchronous photographing models of digital cameras stereophotos, operating in standby mode on the background of reference marks of the coordinate reference system. Photographing takes place at the moment when pulsed light sources are triggered synchronously with the model's movement. Under these conditions, shadow visualization schemes are functional, which represent an upgraded method of a luminous point using a protective lens, a combined method that includes registration in passing light using a camera with an electron-optical shutter, and a shadow background method. Typical registration patterns are given.

 

Keywords: ballistic experiment, aerodynamic characteristics, light-gas installation, photoregistration.