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D. W. Childs
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Journal Articles

Measurements Versus Predictions for the Dynamic Impedance of Annular Gas Seals—Part II: Smooth and Honeycomb Geometries

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M. P. Dawson, Senior Engineer, D. W. Childs, Jordan Professor of Mechanical Engineering
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2002, 124(4): 963–970.
https://doi.org/10.1115/1.1478076
Published Online: September 24, 2002
View Articletitled, Measurements Versus Predictions for the Dynamic Impedance of Annular Gas Seals—Part II: Smooth and Honeycomb Geometries
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Topics: Honeycomb structures, Pressure
Journal Articles

Measurements Versus Predictions for the Dynamic Impedance of Annular Gas Seals—Part I: Test Facility and Apparatus

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M. P. Dawson, Senior Engineer, D. W. Childs, Jordan Professor of Mechanical Engineering, C. G. Holt, Research Assistant, S. G. Phillips, Research Engineer
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2002, 124(4): 958–962.
https://doi.org/10.1115/1.1478075
Published Online: September 24, 2002
View Articletitled, Measurements Versus Predictions for the Dynamic Impedance of Annular Gas Seals—Part I: Test Facility and Apparatus
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Topics: Pressure, Stators, Test facilities, Excitation, Rotors, Annulus
Journal Articles

Measurements of Rotordynamic Coefficients of Hybrid Bearings With (a) a Plugged Orifice, and (b) a Worn Land Surface

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F. Laurant, D. W. Childs
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2002, 124(2): 363–368.
https://doi.org/10.1115/1.1403461
Published Online: March 26, 2002
View Articletitled, Measurements of Rotordynamic Coefficients of Hybrid Bearings With (a) a Plugged Orifice, and (b) a Worn Land Surface
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Topics: Bearings, Stiffness, Pressure, Damping, Wear
Journal Articles

Experimental Rotordynamic Coefficient Results for (a) a Labyrinth Seal With and Without Shunt Injection and (b) a Honeycomb Seal

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E. A. Soto, D. W. Childs
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 1999, 121(1): 153–159.
https://doi.org/10.1115/1.2816303
Published Online: January 1, 1999
View Articletitled, Experimental Rotordynamic Coefficient Results for (a) a Labyrinth Seal With and Without Shunt Injection and (b) a Honeycomb Seal
Open the PDF for Experimental Rotordynamic Coefficient Results for (a) a Labyrinth Seal With and Without Shunt Injection and (b) a Honeycomb Seal in another window
Topics: Honeycomb structures, Rotation, Pressure, Compressors, Damping, Leakage, Rotors, Diffusers, Flow control, Fluid density
Journal Articles

A Comparison of Experimental Rotordynamic Coefficients and Leakage Characteristics Between Hole-Pattern Gas Damper Seals and a Honeycomb Seal

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Z. Yu, D. W. Childs
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. October 1998, 120(4): 778–783.
https://doi.org/10.1115/1.2818467
Published Online: October 1, 1998
View Articletitled, A Comparison of Experimental Rotordynamic Coefficients and Leakage Characteristics Between Hole-Pattern Gas Damper Seals and a Honeycomb Seal
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Topics: Dampers, Honeycomb structures, Leakage, Damage, Damping, Design, Drilling, Manufacturing, Plastics, Pressure
Journal Articles

Closure to “Discussion of ‘The Acoustic Influence of Cell Depth on the Rotordynamic Characteristics of Smooth-Rotor/Honeycomb-Stator Annular Gas Seals’” (1997, ASME J. Eng. Gas Turbines Power, 119, p. 956)

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G. F. Kleynhans, D. W. Childs
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Discussions
J. Eng. Gas Turbines Power. October 1997, 119(4): 956–957.
https://doi.org/10.1115/1.2817081
Published Online: October 1, 1997
View Articletitled, Closure to “Discussion of ‘The Acoustic Influence of Cell Depth on the Rotordynamic Characteristics of Smooth-Rotor/Honeycomb-Stator Annular Gas Seals’” (1997, ASME J. Eng. Gas Turbines Power, 119, p. 956)
Open the PDF for Closure to “Discussion of ‘The Acoustic Influence of Cell Depth on the Rotordynamic Characteristics of Smooth-Rotor/Honeycomb-Stator Annular Gas Seals’” (1997, ASME J. Eng. Gas Turbines Power, 119, p. 956) in another window
Topics: Acoustics, Gas turbines, Honeycomb structures, Rotors, Stators
Journal Articles

The Acoustic Influence of Cell Depth on the Rotordynamic Characteristics of Smooth-Rotor/Honeycomb-Stator Annular Gas Seals

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G. F. Kleynhans, D. W. Childs
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. October 1997, 119(4): 949–956.
https://doi.org/10.1115/1.2817079
Published Online: October 1, 1997
View Articletitled, The Acoustic Influence of Cell Depth on the Rotordynamic Characteristics of Smooth-Rotor/Honeycomb-Stator Annular Gas Seals
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Topics: Acoustics, Honeycomb structures, Rotors, Stators, Transfer functions, Damping, Rotordynamics, Stiffness, Algorithms, Capacitance
Journal Articles

Experimental Leakage and Rotordynamic Results for Helically Grooved Annular Gas Seals

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D. W. Childs, A. J. Gansle
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. April 1996, 118(2): 389–393.
https://doi.org/10.1115/1.2816601
Published Online: April 1, 1996
View Articletitled, Experimental Leakage and Rotordynamic Results for Helically Grooved Annular Gas Seals
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Topics: Leakage, Stators, Honeycomb structures, Flow (Dynamics), Fluids, Stiffness, Whirls, Brakes, Pressure, Rotation
Journal Articles

Experimental Rotordynamic Coefficient Results for Teeth-on-Rotor and Teeth-on-Stator Labyrinth Gas Seals

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D. W. Childs, J. K. Scharrer
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. October 1986, 108(4): 599–604.
https://doi.org/10.1115/1.3239953
Published Online: October 1, 1986
View Articletitled, Experimental Rotordynamic Coefficient Results for Teeth-on-Rotor and Teeth-on-Stator Labyrinth Gas Seals
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Topics: Rotors, Stators, Damping, Rotation, Test facilities
Journal Articles

An Iwatsubo-Based Solution for Labyrinth Seals: Comparison to Experimental Results

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D. W. Childs, J. K. Scharrer
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. April 1986, 108(2): 325–331.
https://doi.org/10.1115/1.3239907
Published Online: April 1, 1986
View Articletitled, An Iwatsubo-Based Solution for Labyrinth Seals: Comparison to Experimental Results
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Topics: Compressible flow, Flow (Dynamics), Friction, Leakage, Momentum, Perturbation theory, Pressure, Separation (Technology), Turbulence
Journal Articles

Vibration Characteristics of the HPOTP (High-Pressure Oxygen Turbopump) of the SSME (Space Shuttle Main Engine)

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D. W. Childs, D. S. Moyer
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 1985, 107(1): 152–159.
https://doi.org/10.1115/1.3239676
Published Online: January 1, 1985
View Articletitled, Vibration Characteristics of the HPOTP (High-Pressure Oxygen Turbopump) of the SSME (Space Shuttle Main Engine)
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Topics: Engines, High pressure (Physics), Oxygen, Space vehicles, Vibration, Bearings, Stability, Clearances (Engineering), Stress, Diffusers
Journal Articles

Fractional-Frequency Rotor Motion Due to Nonsymmetric Clearance Effects

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D. W. Childs
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. July 1982, 104(3): 533–541.
https://doi.org/10.1115/1.3227312
Published Online: July 1, 1982
View Articletitled, Fractional-Frequency Rotor Motion Due to Nonsymmetric Clearance Effects
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Topics: Clearances (Engineering), Rotors, Stiffness, Excitation, Bearings, Damping, Whirls
Journal Articles

The Space Shuttle Main Engine High-Pressure Fuel Turbopump Rotordynamic Instability Problem

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D. W. Childs
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 1978, 100(1): 48–57.
https://doi.org/10.1115/1.3446326
Published Online: January 1, 1978
View Articletitled, The Space Shuttle Main Engine High-Pressure Fuel Turbopump Rotordynamic Instability Problem
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Topics: Engines, Fuels, High pressure (Physics), Space vehicles, Design, Stability, Bearings, Stiffness, Whirls, Damping