Experimental lifetime study of regeneratively cooled rocket chamber walls

Felix Hötte; Christoph v. Sethe; Torben Fiedler; Matthias C. Haupt; Oskar J. Haidn; Michael Rohdenburg

doi:10.1016/j.ijfatigue.2020.105649

Experimental lifetime study of regeneratively cooled rocket chamber walls

Felix Hötte, Christoph v. Sethe, Torben Fiedler, Matthias C. Haupt, Oskar J. Haidn, Michael Rohdenburg

Chair of Space Mobility and Propulsion

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

A detailed knowledge of the life-limiting mechanisms of regeneratively cooled rocket combustion chambers is important to increase the safety, the thrust-to-weight ratio and the cost-efficiency of future rocket engines. For this purpose, an actively cooled specimen made of CuCr1Zr is mounted downstream of a combustion chamber. The specimen is loaded cyclically and inspected after each cycle. The specimens collapse in the ’doghouse’ failure mode after several load cycles. The effects of different hot-gas and coolant conditions, surface roughness and thermal barrier coatings on the lifetime are studied. The life-limiting mechanisms: creeping, yielding, abrasion, blanching and thermal aging are discussed.

Original language	English
Article number	105649
Journal	International Journal of Fatigue
Volume	138
DOIs	https://doi.org/10.1016/j.ijfatigue.2020.105649
State	Published - Sep 2020

Keywords

Aerospace
Copper alloys
Corrosion fatigue
Plasticity
Thermomechanical fatigue/cycling

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10.1016/j.ijfatigue.2020.105649

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title = "Experimental lifetime study of regeneratively cooled rocket chamber walls",

abstract = "A detailed knowledge of the life-limiting mechanisms of regeneratively cooled rocket combustion chambers is important to increase the safety, the thrust-to-weight ratio and the cost-efficiency of future rocket engines. For this purpose, an actively cooled specimen made of CuCr1Zr is mounted downstream of a combustion chamber. The specimen is loaded cyclically and inspected after each cycle. The specimens collapse in the {\textquoteright}doghouse{\textquoteright} failure mode after several load cycles. The effects of different hot-gas and coolant conditions, surface roughness and thermal barrier coatings on the lifetime are studied. The life-limiting mechanisms: creeping, yielding, abrasion, blanching and thermal aging are discussed.",

keywords = "Aerospace, Copper alloys, Corrosion fatigue, Plasticity, Thermomechanical fatigue/cycling",

author = "Felix H{\"o}tte and Sethe, {Christoph v.} and Torben Fiedler and Haupt, {Matthias C.} and Haidn, {Oskar J.} and Michael Rohdenburg",

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AU - Hötte, Felix

AU - Sethe, Christoph v.

AU - Fiedler, Torben

AU - Haupt, Matthias C.

AU - Haidn, Oskar J.

AU - Rohdenburg, Michael

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AB - A detailed knowledge of the life-limiting mechanisms of regeneratively cooled rocket combustion chambers is important to increase the safety, the thrust-to-weight ratio and the cost-efficiency of future rocket engines. For this purpose, an actively cooled specimen made of CuCr1Zr is mounted downstream of a combustion chamber. The specimen is loaded cyclically and inspected after each cycle. The specimens collapse in the ’doghouse’ failure mode after several load cycles. The effects of different hot-gas and coolant conditions, surface roughness and thermal barrier coatings on the lifetime are studied. The life-limiting mechanisms: creeping, yielding, abrasion, blanching and thermal aging are discussed.

KW - Aerospace

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KW - Corrosion fatigue

KW - Plasticity

KW - Thermomechanical fatigue/cycling

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Experimental lifetime study of regeneratively cooled rocket chamber walls

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Keywords

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