Laminar-Turbulent Transition on the STORT Flight Experiment

Sebastian Willems ^*1, Florian Klingenberg.^#1, Frank Sieb ^◊1, Ali Gülhan ^§1,
Thomas Reimer ^‡2, Giuseppe Di Martino.^†2, Dorian Hargarten ^**3,
and Maximilian Zurkaulen.^ƚ3

 

¹Supersonic and Hypersonic Technologies Department, Institute of Aerodynamics and Flow Technology, German AerospaceCenter (DLR), Linder Ho¨he, 51147 Köln, Germany

²Space System Integration, Institute of Structures and Design, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany

³Mobile Rocket Base (MORABA), German Aerospace Center (DLR), Münchener Straße 20, 82234 Weßling, Germany

 

^* sebastian.willems@dlr.de (corresponding author)
^# florian.klingenberg@dlr.de
^◊.frank.siebe@dlr.de
^§ ali.guelhan@dlr.de
^‡ thomas.reimer@dlr.de
^†.giuseppe.dimartino@dlr.de
**dorian.hargarten@dlr.de
^ƚ.maximilian.zurkaulen@dlr.de

 

keywords: hypersonic, free flight, sounding rocket, boundary layer transition

 

Abstract

The German Aerospace Center (DLR) successfully launched a three-stage sounding rocket from the Andøya Space launch site in northern Norway on 26^th June 2022.

This hypersonic free flight experiment [1] was part of the STORT project and was equipped with several scientific payloads concerning hypersonic technologies.

The vehicle performed a suppressed trajectory to increase the integral heat load on the payload, reaching Mach 8 for more than 60s at an altitude between 30km and 38km.

he forebody of the payload is made of ceramic matrix composite (CMC) structures.

The heavy instrumentation of the ogive with heat flux and pressure sensors allowed the detection of laminar-turbulent boundary layer transition during ascent and descent.

Additional experiments in the Hypersonic Test Section Cologne (H2K) provided comparison data from a ground test facility.

 

Reference

[1] A. Gülhan, S. Willems, F. Klingenberg, D. Hargarten, M. Hörschgen-Eggers; STORT Flight Experiment for High Speed Technology Demonstration, 72^nd International Astronatical Congress, Dubai, 2021