Preliminary Experiments on Transpiration Cooling in Ramjets and Scramjets

Strauss, Friedolin; Manfletti, Chiara; Freudenmann, Dominic; Witte, Jan; Schlechtriem, Stefan

doi:10.2514/6.2016-4968

Cited by 6 publications

(3 citation statements)

References 8 publications

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“…The experiments were conducted at the high-speed air breathing propulsion test facility M11.1 of DLR's Institute of Space Propulsion at the site of Lampoldshausen. This test bench is equipped with sensitive Schlieren systems as well as high speed cameras to investigate supersonic flows (see Strauss et al, 2016Strauss et al, , 2017, for details). In the scientific field of aerospace applications with supersonic flows Schlieren photography is well-established and a standard non-intrusive measurement method.…”

Section: Recordings and Preprocessingmentioning

confidence: 99%

A corpus of Schlieren photography of speech production: potential methodology to study aerodynamics of labial, nasal and vocalic processes

Tomaschek

Arnold

Sering

et al. 2021

Lang Resources & Evaluation

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This report presents a corpus of articulations recorded with Schlieren photography, a recording technique to visualize aeroflow dynamics for two purposes. First, as a means to investigate aerodynamic processes during speech production without any obstruction of the lips and the nose. Second, to provide material for lecturers of phonetics to illustrates these aerodynamic processes. Speech production was recorded with 10 kHz frame rate for statistical video analyses. Downsampled videos (500 Hz) were uplodad to a youtube channel for illustrative purposes. Preliminary analyses demonstrate potential in applying Schlieren photography in research.

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Section: Recordings and Preprocessingmentioning

confidence: 99%

A corpus of Schlieren photography of speech production: potential methodology to study aerodynamics of labial, nasal and vocalic processes

Tomaschek

Arnold

Sering

et al. 2021

Lang Resources & Evaluation

View full text Add to dashboard Cite

show abstract

“…Such numerical simulations of sweat cooling mainly focus on the cooling efficiency of sweat cooling in different flow environments and when different materials are used, which can provide references for the design of sweat cooling for active thermal protection systems, e.g., the combustion chamber and air inlet, of propulsion systems. The DLR made a preliminary experimental verification of the direct applicability of sweat cooling to ramjets [47], with the experimental verification diagram and the physical map of the experimental apparatus shown in Figure 9, the test bench consists of a hydrogen and orxygen air vitiator(A, B, C in Figure 9a,b. This experimental apparatus can verify the applicability of sweat cooling systems under the thermal and mechanical loads of ramjets.…”

Section: Latest Research Progress Of Active Thermal Protectionmentioning

confidence: 99%

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

et al. 2019

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Combined-cycle engine is a potential propulsion system for hypersonic aircraft. To ensure long-term, normal operation of combined-cycle engine under the harsh environment of high thermal load, it is of great significance to study the thermal protection and management of the propulsion system. In this study, the objective and development status of thermal protection and thermal management systems for the combined-cycle propulsion system were described. The latest research progresses of thermal protection, thermal barrier coating, and thermal management system of the combined-cycle propulsion system were summarized. Moreover, the problems and shortcoming in current researches were summarized. In addition, a prospect for the future development of thermal protection and management of the combined-cycle propulsion system was presented, pointing out a direction of great value and vital research significance to thermal protection and management of the combined-cycle propulsion system.

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“…The experiments were conducted at the high-speed air breathing propulsion test facility M11.1 of DLR's Institute of Space Propulsion at the site of Lampoldshausen. This test bench is equipped with sensitive Schlieren systems as well as high speed cameras to investigate supersonic flows (see Strauss et al (2016) and Strauss et al (2017) for details). In the scientific field of aerospace applications with supersonic flows Schlieren photography is well-established and a standard non-intrusive measurement method.…”

Section: Recordings and Preprocessingmentioning

confidence: 99%

A corpus of Schlieren photography of speech production - Potential to study aerodynamics of labial, nasal and vocalic processes

Tomaschek¹,

Arnold²,

Sering³

et al. 2019

Preprint

View full text Add to dashboard Cite

This report presents a corpus of articulations recorded with Schlieren photography, a recording technique to visualize aeroflow dynamics for two purposes. First, as a means to investigate aerodynamic processes during speech production without any obstruction of the lips. Second, to provide material for lecturers of phonetics to illustrates these aerodynamic processes. Speech production was recorded with 10 kHz sampling rate for statistical video analyses (available at the Bavarian Archive for Speech Signals). Downsampled videos (500 Hz) were uplodad to a youtube channel for illustrative purposes.

show abstract

Preliminary Experiments on Transpiration Cooling in Ramjets and Scramjets

Cited by 6 publications

References 8 publications

A corpus of Schlieren photography of speech production: potential methodology to study aerodynamics of labial, nasal and vocalic processes

A corpus of Schlieren photography of speech production: potential methodology to study aerodynamics of labial, nasal and vocalic processes

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

A corpus of Schlieren photography of speech production - Potential to study aerodynamics of labial, nasal and vocalic processes

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