Damage mitigating control of a reusable rocket engine

part II - formulation of an optimal policy

Xiaowen Dai, Asok Ray

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The goal of damage-mitigating control in reusable rocket engines is to achieve high performance without overstraining the mechanical structures; and the major benefit is an increase in structural durability with no significant loss of performance. This two-part paper investigates the feasibility of damage-mitigating control of the Space Shuttle Main Engine (SSME). A creep damage model of the main thrust chamber coolant channel has been formulated and verified in the first part. This paper, which is the second part, synthesizes an optimal policy for open loop control of up-thrust transients of the SSME. Optimization is based on the integrated model of plant, structural and damage dynamics under fatigue and creep damage constraints in the critical plant components. The results are presented to demonstrate the potential of life extension of reusable rocket engines via damage mitigating control. The concept of damage mitigation, as presented in this paper, is not restricted to control of rocket engines. It can be applied to any system where structural durability is an important issue.

    Original languageEnglish (US)
    Title of host publicationDynamic Systems and Control (Vol 2 of 2)
    PublisherASME
    Pages1075-1081
    Number of pages7
    Volume55-2
    StatePublished - 1994
    EventProceedings of the 1994 International Mechanical Engineering Congress and Exposition - Chicago, IL, USA
    Duration: Nov 6 1994Nov 11 1994

    Other

    OtherProceedings of the 1994 International Mechanical Engineering Congress and Exposition
    CityChicago, IL, USA
    Period11/6/9411/11/94

    Fingerprint

    Reusable rockets
    Rocket engines
    Space shuttles
    Creep
    Durability
    Engines
    Coolants
    Fatigue of materials

    All Science Journal Classification (ASJC) codes

    • Software
    • Mechanical Engineering

    Cite this

    Dai, X., & Ray, A. (1994). Damage mitigating control of a reusable rocket engine: part II - formulation of an optimal policy. In Dynamic Systems and Control (Vol 2 of 2) (Vol. 55-2, pp. 1075-1081). ASME.
    Dai, Xiaowen ; Ray, Asok. / Damage mitigating control of a reusable rocket engine : part II - formulation of an optimal policy. Dynamic Systems and Control (Vol 2 of 2). Vol. 55-2 ASME, 1994. pp. 1075-1081
    @inproceedings{054118b7ce52415b8bea15457e5a730a,
    title = "Damage mitigating control of a reusable rocket engine: part II - formulation of an optimal policy",
    abstract = "The goal of damage-mitigating control in reusable rocket engines is to achieve high performance without overstraining the mechanical structures; and the major benefit is an increase in structural durability with no significant loss of performance. This two-part paper investigates the feasibility of damage-mitigating control of the Space Shuttle Main Engine (SSME). A creep damage model of the main thrust chamber coolant channel has been formulated and verified in the first part. This paper, which is the second part, synthesizes an optimal policy for open loop control of up-thrust transients of the SSME. Optimization is based on the integrated model of plant, structural and damage dynamics under fatigue and creep damage constraints in the critical plant components. The results are presented to demonstrate the potential of life extension of reusable rocket engines via damage mitigating control. The concept of damage mitigation, as presented in this paper, is not restricted to control of rocket engines. It can be applied to any system where structural durability is an important issue.",
    author = "Xiaowen Dai and Asok Ray",
    year = "1994",
    language = "English (US)",
    volume = "55-2",
    pages = "1075--1081",
    booktitle = "Dynamic Systems and Control (Vol 2 of 2)",
    publisher = "ASME",

    }

    Dai, X & Ray, A 1994, Damage mitigating control of a reusable rocket engine: part II - formulation of an optimal policy. in Dynamic Systems and Control (Vol 2 of 2). vol. 55-2, ASME, pp. 1075-1081, Proceedings of the 1994 International Mechanical Engineering Congress and Exposition, Chicago, IL, USA, 11/6/94.

    Damage mitigating control of a reusable rocket engine : part II - formulation of an optimal policy. / Dai, Xiaowen; Ray, Asok.

    Dynamic Systems and Control (Vol 2 of 2). Vol. 55-2 ASME, 1994. p. 1075-1081.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    TY - GEN

    T1 - Damage mitigating control of a reusable rocket engine

    T2 - part II - formulation of an optimal policy

    AU - Dai, Xiaowen

    AU - Ray, Asok

    PY - 1994

    Y1 - 1994

    N2 - The goal of damage-mitigating control in reusable rocket engines is to achieve high performance without overstraining the mechanical structures; and the major benefit is an increase in structural durability with no significant loss of performance. This two-part paper investigates the feasibility of damage-mitigating control of the Space Shuttle Main Engine (SSME). A creep damage model of the main thrust chamber coolant channel has been formulated and verified in the first part. This paper, which is the second part, synthesizes an optimal policy for open loop control of up-thrust transients of the SSME. Optimization is based on the integrated model of plant, structural and damage dynamics under fatigue and creep damage constraints in the critical plant components. The results are presented to demonstrate the potential of life extension of reusable rocket engines via damage mitigating control. The concept of damage mitigation, as presented in this paper, is not restricted to control of rocket engines. It can be applied to any system where structural durability is an important issue.

    AB - The goal of damage-mitigating control in reusable rocket engines is to achieve high performance without overstraining the mechanical structures; and the major benefit is an increase in structural durability with no significant loss of performance. This two-part paper investigates the feasibility of damage-mitigating control of the Space Shuttle Main Engine (SSME). A creep damage model of the main thrust chamber coolant channel has been formulated and verified in the first part. This paper, which is the second part, synthesizes an optimal policy for open loop control of up-thrust transients of the SSME. Optimization is based on the integrated model of plant, structural and damage dynamics under fatigue and creep damage constraints in the critical plant components. The results are presented to demonstrate the potential of life extension of reusable rocket engines via damage mitigating control. The concept of damage mitigation, as presented in this paper, is not restricted to control of rocket engines. It can be applied to any system where structural durability is an important issue.

    UR - http://www.scopus.com/inward/record.url?scp=0028729595&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0028729595&partnerID=8YFLogxK

    M3 - Conference contribution

    VL - 55-2

    SP - 1075

    EP - 1081

    BT - Dynamic Systems and Control (Vol 2 of 2)

    PB - ASME

    ER -

    Dai X, Ray A. Damage mitigating control of a reusable rocket engine: part II - formulation of an optimal policy. In Dynamic Systems and Control (Vol 2 of 2). Vol. 55-2. ASME. 1994. p. 1075-1081