Coupled inflow and structural dynamics of a coaxial rotor with time delays and adjoint variables including multiple inflow states

Cory Seidel; David A. Peters

Coupled inflow and structural dynamics of a coaxial rotor with time delays and adjoint variables including multiple inflow states

Cory Seidel
, David A. Peters

Department of Mechanical Engineering & Materials Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The exact formulation of flow below the rotor disk for the finite-state inflow equations (derived from potential flow theory by the Galerkin method) shows that flow below the rotor disk involves time delays and the existence of adjoint variables, time-marched backwards. Thus, when two rotors are coupled together, traditional Laplace Transform solutions are not applicable; and new dynamics are introduced that have not heretofore been studied. In this paper, we look at the nature of these types of solution in terms of blade and inflow dynamics of two co-axial lifting rotors revealing interesting behavior.

Original language	English
Title of host publication	Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020
Publisher	Vertical Flight Society
Pages	390-401
Number of pages	12
ISBN (Electronic)	9781713806332
State	Published - 2020
Event	Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020 - San Jose, United States Duration: Jan 21 2020 → Jan 23 2020

Publication series

Name	Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020

Conference

Conference	Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020
Country/Territory	United States
City	San Jose
Period	01/21/20 → 01/23/20

Cite this

Seidel, C., & Peters, D. A. (2020). Coupled inflow and structural dynamics of a coaxial rotor with time delays and adjoint variables including multiple inflow states. In Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020 (pp. 390-401). (Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020). Vertical Flight Society.

Seidel, Cory ; Peters, David A. / Coupled inflow and structural dynamics of a coaxial rotor with time delays and adjoint variables including multiple inflow states. Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020. Vertical Flight Society, 2020. pp. 390-401 (Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020).

@inproceedings{5448d41cdf8445c781d74928b57da88f,

title = "Coupled inflow and structural dynamics of a coaxial rotor with time delays and adjoint variables including multiple inflow states",

abstract = "The exact formulation of flow below the rotor disk for the finite-state inflow equations (derived from potential flow theory by the Galerkin method) shows that flow below the rotor disk involves time delays and the existence of adjoint variables, time-marched backwards. Thus, when two rotors are coupled together, traditional Laplace Transform solutions are not applicable; and new dynamics are introduced that have not heretofore been studied. In this paper, we look at the nature of these types of solution in terms of blade and inflow dynamics of two co-axial lifting rotors revealing interesting behavior.",

author = "Cory Seidel and Peters, \{David A.\}",

note = "Publisher Copyright: Copyright {\textcopyright} 2020 by the Vertical Flight Society. All rights reserved.; Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020 ; Conference date: 21-01-2020 Through 23-01-2020",

year = "2020",

language = "English",

series = "Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020",

publisher = "Vertical Flight Society",

pages = "390--401",

booktitle = "Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020",

}

Seidel, C & Peters, DA 2020, Coupled inflow and structural dynamics of a coaxial rotor with time delays and adjoint variables including multiple inflow states. in Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020. Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020, Vertical Flight Society, pp. 390-401, Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020, San Jose, United States, 01/21/20.

Coupled inflow and structural dynamics of a coaxial rotor with time delays and adjoint variables including multiple inflow states. / Seidel, Cory; Peters, David A.
Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020. Vertical Flight Society, 2020. p. 390-401 (Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Coupled inflow and structural dynamics of a coaxial rotor with time delays and adjoint variables including multiple inflow states

AU - Seidel, Cory

AU - Peters, David A.

PY - 2020

Y1 - 2020

N2 - The exact formulation of flow below the rotor disk for the finite-state inflow equations (derived from potential flow theory by the Galerkin method) shows that flow below the rotor disk involves time delays and the existence of adjoint variables, time-marched backwards. Thus, when two rotors are coupled together, traditional Laplace Transform solutions are not applicable; and new dynamics are introduced that have not heretofore been studied. In this paper, we look at the nature of these types of solution in terms of blade and inflow dynamics of two co-axial lifting rotors revealing interesting behavior.

AB - The exact formulation of flow below the rotor disk for the finite-state inflow equations (derived from potential flow theory by the Galerkin method) shows that flow below the rotor disk involves time delays and the existence of adjoint variables, time-marched backwards. Thus, when two rotors are coupled together, traditional Laplace Transform solutions are not applicable; and new dynamics are introduced that have not heretofore been studied. In this paper, we look at the nature of these types of solution in terms of blade and inflow dynamics of two co-axial lifting rotors revealing interesting behavior.

UR - https://www.scopus.com/pages/publications/85094891731

M3 - Conference contribution

AN - SCOPUS:85094891731

T3 - Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020

SP - 390

EP - 401

BT - Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020

PB - Vertical Flight Society

T2 - Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020

Y2 - 21 January 2020 through 23 January 2020

ER -

Seidel C, Peters DA. Coupled inflow and structural dynamics of a coaxial rotor with time delays and adjoint variables including multiple inflow states. In Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020. Vertical Flight Society. 2020. p. 390-401. (Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020).

Coupled inflow and structural dynamics of a coaxial rotor with time delays and adjoint variables including multiple inflow states

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