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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Mechanical and Aerospace Engineering 38 2228 2074 810 713 178 7272

Kyle T. Alfriend publications per year

The chart shows the history of publications by Kyle T. Alfriend between 1967 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kyle T. Alfriend published across 59 years, from 1967 to 2025, averaging 3.3 papers a year. Output peaked at 18 publications in 2010. 6 of the 197 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1967 to 2025. Vertical axis: number of publications, 0 to 18. Peak 18 publications in 2010. 1967: 1 publication 1968: 1 publication 1969: 2 publications 1970: 1 publication 1971: 4 publications 1972: 1 publication 1973: 4 publications 1974: 4 publications 1975: 4 publications 1976: 2 publications 1977: 4 publications 1978: 2 publications 1979: 1 publication 1980: 1 publication 1981: 2 publications 1982: 3 publications 1983: 2 publications 1984: 2 publications 1985: 0 publications 1986: 0 publications 1987: 0 publications 1988: 0 publications 1989: 0 publications 1990: 0 publications 1991: 0 publications 1992: 4 publications 1993: 2 publications 1994: 2 publications 1995: 3 publications 1996: 4 publications 1997: 1 publication 1998: 2 publications 1999: 2 publications 2000: 6 publications 2001: 6 publications 2002: 10 publications 2003: 6 publications 2004: 6 publications 2005: 5 publications 2006: 6 publications 2007: 7 publications 2008: 6 publications 2009: 7 publications 2010: 18 publications 2011: 6 publications 2012: 6 publications 2013: 6 publications 2014: 5 publications 2015: 2 publications 2016: 4 publications 2017: 1 publication 2018: 3 publications 2019: 3 publications 2020: 2 publications 2021: 4 publications 2022: 2 publications 2023: 3 publications 2024: 4 publications 2025: 2 publications
1967 2025

197 publications in total across all disciplines

View publications per year as a table
Kyle T. Alfriend: publications per year, 1967 to 2025
Year Publications
1967 1
1968 1
1969 2
1970 1
1971 4
1972 1
1973 4
1974 4
1975 4
1976 2
1977 4
1978 2
1979 1
1980 1
1981 2
1982 3
1983 2
1984 2
1985 0
1986 0
1987 0
1988 0
1989 0
1990 0
1991 0
1992 4
1993 2
1994 2
1995 3
1996 4
1997 1
1998 2
1999 2
2000 6
2001 6
2002 10
2003 6
2004 6
2005 5
2006 6
2007 7
2008 6
2009 7
2010 18
2011 6
2012 6
2013 6
2014 5
2015 2
2016 4
2017 1
2018 3
2019 3
2020 2
2021 4
2022 2
2023 3
2024 4
2025 2
Total 197
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Kyle T. Alfriend publication distribution in Mechanical and Aerospace Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mechanical and Aerospace Engineering in 2026. The highlighted bar marks where Kyle T. Alfriend sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 63 bars. Horizontal axis: publications, 47–56 to 659+. Vertical axis: number of scientists, 0 to 155. Most scientists, 155, have 147–156 publications. The last bar groups every scientist with 659 publications or more. The highlighted bar, 177–186 publications, is where this scientist sits. 47–56 publications: 10 scientists 57–66 publications: 23 scientists 67–76 publications: 32 scientists 77–86 publications: 62 scientists 87–96 publications: 67 scientists 97–106 publications: 91 scientists 107–116 publications: 113 scientists 117–126 publications: 115 scientists 127–136 publications: 130 scientists 137–146 publications: 140 scientists 147–156 publications: 155 scientists 157–166 publications: 132 scientists 167–176 publications: 133 scientists 177–186 publications: 130 scientists 187–196 publications: 140 scientists 197–206 publications: 115 scientists 207–216 publications: 125 scientists 217–226 publications: 117 scientists 227–236 publications: 99 scientists 237–246 publications: 92 scientists 247–256 publications: 100 scientists 257–266 publications: 95 scientists 267–276 publications: 88 scientists 277–286 publications: 77 scientists 287–296 publications: 74 scientists 297–306 publications: 74 scientists 307–316 publications: 62 scientists 317–326 publications: 70 scientists 327–336 publications: 59 scientists 337–346 publications: 58 scientists 347–356 publications: 45 scientists 357–366 publications: 44 scientists 367–376 publications: 36 scientists 377–386 publications: 41 scientists 387–396 publications: 32 scientists 397–406 publications: 23 scientists 407–416 publications: 28 scientists 417–426 publications: 27 scientists 427–436 publications: 25 scientists 437–446 publications: 23 scientists 447–456 publications: 23 scientists 457–466 publications: 20 scientists 467–476 publications: 12 scientists 477–486 publications: 24 scientists 487–496 publications: 18 scientists 497–506 publications: 12 scientists 507–516 publications: 13 scientists 517–526 publications: 21 scientists 527–536 publications: 12 scientists 537–546 publications: 8 scientists 547–556 publications: 16 scientists 557–566 publications: 3 scientists 567–576 publications: 11 scientists 577–586 publications: 6 scientists 587–596 publications: 5 scientists 597–606 publications: 6 scientists 607–616 publications: 7 scientists 617–626 publications: 7 scientists 627–636 publications: 10 scientists 637–646 publications: 4 scientists 647–656 publications: 3 scientists 657–658 publications: 2 scientists 659+ publications: 100 scientists
47–56 publications 659+

This scientist: 178 publications — 36th percentile

36% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 659 publications or more.

View publications distribution as a table
Number of Mechanical and Aerospace Engineering scientists by publication count, Research.com 2026 ranking edition. Based on 3,445 ranked scientists.
Publications Scientists This scientist
47–56 10
57–66 23
67–76 32
77–86 62
87–96 67
97–106 91
107–116 113
117–126 115
127–136 130
137–146 140
147–156 155
157–166 132
167–176 133
177–186 130 178
187–196 140
197–206 115
207–216 125
217–226 117
227–236 99
237–246 92
247–256 100
257–266 95
267–276 88
277–286 77
287–296 74
297–306 74
307–316 62
317–326 70
327–336 59
337–346 58
347–356 45
357–366 44
367–376 36
377–386 41
387–396 32
397–406 23
407–416 28
417–426 27
427–436 25
437–446 23
447–456 23
457–466 20
467–476 12
477–486 24
487–496 18
497–506 12
507–516 13
517–526 21
527–536 12
537–546 8
547–556 16
557–566 3
567–576 11
577–586 6
587–596 5
597–606 6
607–616 7
617–626 7
627–636 10
637–646 4
647–656 3
657–658 2
659+ 100
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Kyle T. Alfriend D-index placement in Mechanical and Aerospace Engineering in 2026

The chart shows the D-index (discipline H-index) distribution of Mechanical and Aerospace Engineering scientists ranked by Research.com in 2026. The highlighted bar marks where Kyle T. Alfriend sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 64 bars. Horizontal axis: D-Index, 30 to 93+. Vertical axis: number of scientists, 0 to 189. Most scientists, 189, have 34 D-Index. The last bar groups every scientist with 93 D-Index or more. The highlighted bar, 38 D-Index, is where this scientist sits. 30 D-Index: 83 scientists 31 D-Index: 113 scientists 32 D-Index: 144 scientists 33 D-Index: 153 scientists 34 D-Index: 189 scientists 35 D-Index: 158 scientists 36 D-Index: 139 scientists 37 D-Index: 127 scientists 38 D-Index: 130 scientists 39 D-Index: 126 scientists 40 D-Index: 104 scientists 41 D-Index: 100 scientists 42 D-Index: 107 scientists 43 D-Index: 101 scientists 44 D-Index: 103 scientists 45 D-Index: 79 scientists 46 D-Index: 88 scientists 47 D-Index: 70 scientists 48 D-Index: 83 scientists 49 D-Index: 44 scientists 50 D-Index: 64 scientists 51 D-Index: 56 scientists 52 D-Index: 50 scientists 53 D-Index: 48 scientists 54 D-Index: 58 scientists 55 D-Index: 52 scientists 56 D-Index: 48 scientists 57 D-Index: 42 scientists 58 D-Index: 34 scientists 59 D-Index: 42 scientists 60 D-Index: 37 scientists 61 D-Index: 42 scientists 62 D-Index: 44 scientists 63 D-Index: 22 scientists 64 D-Index: 33 scientists 65 D-Index: 29 scientists 66 D-Index: 23 scientists 67 D-Index: 29 scientists 68 D-Index: 24 scientists 69 D-Index: 19 scientists 70 D-Index: 34 scientists 71 D-Index: 26 scientists 72 D-Index: 19 scientists 73 D-Index: 18 scientists 74 D-Index: 19 scientists 75 D-Index: 14 scientists 76 D-Index: 19 scientists 77 D-Index: 8 scientists 78 D-Index: 18 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 17 scientists 82 D-Index: 11 scientists 83 D-Index: 16 scientists 84 D-Index: 7 scientists 85 D-Index: 9 scientists 86 D-Index: 8 scientists 87 D-Index: 6 scientists 88 D-Index: 6 scientists 89 D-Index: 7 scientists 90 D-Index: 10 scientists 91 D-Index: 4 scientists 92 D-Index: 4 scientists 93+ D-Index: 100 scientists
30 D-Index 93+

This scientist: 38 D-Index — 36th percentile

36% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 93 D-Index or more.

View D-Index distribution as a table
Number of Mechanical and Aerospace Engineering scientists by D-index, Research.com 2026 ranking edition. Based on 3,445 ranked scientists.
D-Index Scientists This scientist
30 83
31 113
32 144
33 153
34 189
35 158
36 139
37 127
38 130 38
39 126
40 104
41 100
42 107
43 101
44 103
45 79
46 88
47 70
48 83
49 44
50 64
51 56
52 50
53 48
54 58
55 52
56 48
57 42
58 34
59 42
60 37
61 42
62 44
63 22
64 33
65 29
66 23
67 29
68 24
69 19
70 34
71 26
72 19
73 18
74 19
75 14
76 19
77 8
78 18
79 16
80 12
81 17
82 11
83 16
84 7
85 9
86 8
87 6
88 6
89 7
90 10
91 4
92 4
93+ 100
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Research.com Recognitions

  • 2003 - Member of the European Academy of Sciences
  • 1999 - Member of the National Academy of Engineering For theoretical contributions, applied research, and leadership in satellite orbital mechanics and spacecraft attitude control.

Overview

Kyle T. Alfriend is affiliated with Texas A&M University in the United States. Their research spans the fields of Physics and Astronomy as well as Engineering, with a particular focus on several subfields including Astronomy and Astrophysics, Aerospace Engineering, Artificial Intelligence, and Statistics and Probability.

Their main topics of work include:

  • Astro and Planetary Science
  • Planetary Science and Exploration
  • Space Satellite Systems and Control
  • Target Tracking and Data Fusion in Sensor Networks
  • Spacecraft Dynamics and Control
  • Inertial Sensor and Navigation
  • GNSS positioning and interference

Kyle T. Alfriend has contributed to a range of academic literature, with publications featured in several notable venues such as:

  • Journal of Guidance Control and Dynamics
  • Celestial Mechanics and Dynamical Astronomy
  • IEEE Transactions on Aerospace and Electronic Systems
  • Acta Mechanica Sinica
  • The Journal of the Astronautical Sciences

Some recent representative papers include:

  • "Natural Landing Simulations on Generated Local Rocky Terrains for Asteroid Cubic Lander," 2022, IEEE Transactions on Aerospace and Electronic Systems
  • "On a set of J₂ equinoctial orbital elements and their use for uncertainty propagation," 2021, Celestial Mechanics and Dynamical Astronomy
  • "New meteoroid entry method with a deformable non-spherical N-body model," 2023, Acta Mechanica Sinica
  • "Least Sum of Absolute Residuals Orbit Determination," 2021, Journal of Guidance Control and Dynamics
  • "Attitude dynamics of a rigid body in Keplerian motion," 2021, Celestial Mechanics and Dynamical Astronomy

Frequent collaborators in their research include Kaushik Prabhu, Xiangyuan Zeng, Tongge Wen, Ziwen Li, and Manoranjan Majji.

Kyle T. Alfriend has also contributed to book literature, including a publication through the American Institute of Aeronautics and Astronautics titled "History of U.S. Space Surveillance and Satellite Cataloging: A Long and Winding Road," expected in 2025.

The scientist has been recognized by several honors, such as being named a Member of the European Academy of Sciences in 2003 and a Member of the National Academy of Engineering in 1999, the latter for theoretical contributions, applied research, and leadership in satellite orbital mechanics and spacecraft attitude control.

Best Publications

  • Spacecraft Formation Flying: Dynamics, Control and Navigation

    Kyle Terry Alfriend;Srinivas Rao Vadali;Pini Gurfil;Jonathan How

  • State Transition Matrix of Relative Motion for the Perturbed Noncircular Reference Orbit

    Dong-Woo Gim;Kyle T. Alfriend

  • J 2 Invariant Relative Orbits for Spacecraft Formations

    Hanspeter Schaub;Kyle T. Alfriend

  • Spacecraft Formation Flying Control Using Mean Orbit Elements

    Hanspeter Schaub;Srinivas R. Vadali;John L. Junkins;Kyle T. Alfriend

  • Elementary Magnetic Attitude Control System

    A. Craig Stickler;K.T. Alfriend

  • Non-Gaussian error propagation in orbital mechanics

    John L. Junkins;Maruthi R. Akella;Kyle T. Alfriend

  • Impulsive Feedback Control to Establish Specific Mean Orbit Elements of Spacecraft Formations

    Hanspeter Schaub;Kyle T. Alfriend

  • Formation Flying: Accommodating Nonlinearity and Eccentricity Perturbations

    Sesha S. Vaddi;Srinivas R. Vadali;Kyle T. Alfriend

  • Formation Establishment and Reconfiguration Using Impulsive Control

    S. S. Vaddi;K. T. Alfriend;S. R. Vadali;P. Sengupta

  • Probability of Collision Between Space Objects

    Maruthi R. Akella;Kyle T. Alfriend

  • Probability of Collision Error Analysis

    Kyle T. Alfriend;Maruthi R. Akella;Joseph Frisbee;James L. Foster

  • Correlation of Optical Observations of Objects in Earth Orbit

    Jared M. Maruskin;Daniel J. Scheeres;Kyle T. Alfriend

  • Hybrid Cartesian and Orbit Element Feedback Law for Formation Flying Spacecraft

    Hanspeter Schaub;Kyle T. Alfriend

  • Evaluation and Comparison of Relative Motion Theories

    K. T. Alfriend;H. Yan

  • Analytical Nonlinear Propagation of Uncertainty in the Two-Body Problem

    K. Fujimoto;D. J. Scheeres;K. T. Alfriend

  • An intelligent control concept for formation flying satellites

    S. R. Vadali;S. S. Vaddi;K. T. Alfriend

  • Initial conditions and fuel-optimal control for formation flying of satellites

    S. Vadali;H. Schaub;K. Alfriend

  • SATELLITE RELATIVE MOTION USING DIFFERENTIAL EQUINOCTIAL ELEMENTS

    Dong-Woo Gim;Kyle T. Alfriend

  • Dynamic and Control of Spacecraft Formations: Challenges and Some Solutions

    Kyle T. Alfriend;Hanspeter Schaub

  • Solar Sail Body-Fixed Hovering over Elongated Asteroids

    Xiangyuan Zeng;Shengping Gong;Junfeng Li;Kyle T. Alfriend

  • Optimal Servicing of Geosynchronous Satellites

    Kyle T. Alfriend;Deok-Jin Lee;N. Glenn Creamer

Frequent Co-Authors

Srinivas R. Vadali
Srinivas R. Vadali Texas A&M University
Pini Gurfil
Pini Gurfil Technion – Israel Institute of Technology
Hanspeter Schaub
Hanspeter Schaub University of Colorado Boulder
Maruthi R. Akella
Maruthi R. Akella The University of Texas at Austin
John L. Junkins
John L. Junkins Texas A&M University
Daniel J. Scheeres
Daniel J. Scheeres University of Colorado Boulder
I. Michael Ross
I. Michael Ross Naval Postgraduate School
Richard W. Longman
Richard W. Longman Columbia University
Andrew J. Fleming
Andrew J. Fleming University of Newcastle Australia

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