James Longuski

James Michael Longuski (born 1951) is an American scientist, inventor, writer, and educator known for his contributions to astrodynamics and space mission design. After working as a space mission designer at Jet Propulsion Laboratory (JPL) for NASA, Longuski has served as a professor at Purdue University School of Aeronautics and Astronautics since 1988.[2]

James Longuski
James Longuski in 2018
Born
James Michael Longuski

1951 (age 68–69)
NationalityAmerican
Other namesJim Longuski
JM Longuski
Alma materUniversity of Michigan (BSE, MSE, PhD)
Scientific career
InstitutionsPurdue University
Purdue University School of Aeronautics and Astronautics
ThesisAnalytic theory of orbit contraction and ballistic entry into planetary atmospheres (1979)
Doctoral advisorNguyễn Xuân Vinh
Doctoral studentsPanagiotis Tsiotras[1]
Websiteengineering.purdue.edu/AAE/people/ptProfile?resource_id=1319

Education

Longuski received his PhD in Aerospace Engineering from the University of Michigan in 1979 supervised by Nguyễn Xuân Vinh.[1][3][4]

Career and research

In the late 1990s together with Nathan Strange of JPL, he developed the method and coined the term, the “Tisserand graph,”[5] widely used for gravity-assist spacecraft trajectory design (a concept independently introduced by Labunsky et al.[6]). He also developed the technique and coined the term, “V-Infinity Leveraging,” which uses a deep space maneuver to leverage (increase or decrease) the hyperbolic velocity at the next gravity-assist body.[7]

Longuski began work on Mars cycler trajectories in 1985 when Buzz Aldrin visited JPL looking for verification of his proposed trajectory now known as the Aldrin cycler. The concept involves placing a large spacecraft (or astronaut hotel) in orbit around the Sun that continually flies by Mars and Earth , providing a permanent human transportation system between those planets. Longuski was able to verify Aldrin's concept and together they developed several versions of cycler trajectories.[8]

In 2001, Longuski with Ephraim Fischbach and Daniel Scheeres proposed a test of Albert Einstein's General Theory of Relativity based on spacecraft trajectories [9]. Longuski is co-inventor with Dan Javorsek of a Method of Velocity Precision Pointing in Spin-Stabilized Spacecraft or Rockets. Longuski has published three books:

  1. Advice to Rocket Scientists[10]
  2. The Seven Secrets of How to Think Like a Rocket Scientist[11]
  3. Optimal Control with Aerospace Applications[12]

Quotes

Any intelligent fool can make things bigger and more complex and more violent. It takes a touch of genius and a lot of courage to move in the opposite direction.

— James Longuski, The Seven Secrets of How to Think Like a Rocket Scientist[11]
gollark: Hí.
gollark: I mean, Keansia and Chorus City don't even have tax.
gollark: Generally we tend not to overlap real life and game citizenships.
gollark: We must destroy Saltire with a rain of laser squids BTW.
gollark: Perhaps 0.05KST per oaklog.

References
  1. James Longuski at the Mathematics Genealogy Project
  2. "James M. Longuski". engineering.purdue.edu. Purdue University. Retrieved 9 October 2017.
  3. Longuski, James Michael (1979). Analytic theory of orbit contraction and ballistic entry into planetary atmospheres. nasa.gov (PhD thesis). University of Michigan. Bibcode:1979PhDT.........3L. OCLC 68288623.
  4. "James M. Longuski at Academic Tree". academictree.org.
  5. Strange, Nathan J.; Longuski, James M. (2002). "Graphical Method for Gravity-Assist Trajectory Design". Journal of Spacecraft and Rockets. 39. pp. 9–16. doi:10.2514/2.3800.
  6. Labunsky, A. V.; Papkov, O. V.; Sukhanov, K. G. (1998). "Multiple Gravity Assist Interplanetary Trajectories". Gordon and Breach Science Publishers. Newark, N.J. ISBN 9789056990909.
  7. Sims, J. A.; Longuski, J. M.; Staugler, A. J. (1997). "V∞ Leveraging for Interplanetary Missions: Multiple-Revolution Orbit Techniques". Journal of Guidance, Control, and Dynamics. 20. pp. 409–415. doi:10.2514/2.4064.
  8. Byrnes, D.V.; Longuski, J. M.; Aldrin, B. (1993). "The Cycler Orbit Between Earth and Mars". Journal of Spacecraft and Rockets. 30. pp. 334–336. doi:10.2514/3.25519.
  9. Longuski, J. M.; Fischbach, E.; Scheeres, D.J. (2001). ""Deflection of Spacecraft Trajectories as a New Test of General Relativity"". Physical Review Letters. 86. doi:10.1103/PhysRevLett.86.2942. PMID 11290078.
  10. Longuski, Jim (2003). Advice to Rocket Scientists: A Career Survival Guide for Scientists and Engineers. Washington, DC: American Institute of Aeronautics and Astronautics. doi:10.2514/4.476556. ISBN 978-1-56347-655-6. OCLC 834246021.
  11. Longuski, Jim (2007). The Seven Secrets of How to Think Like a Rocket Scientist. New York: Copernicus Books. ISBN 9780387682228. OCLC 751582786.
  12. Longuski, James M; Guzmán, José J.; Prussing, John E. (2014). Optimal Control with Aerospace Applications. doi:10.1007/978-1-4614-8945-0. ISBN 9781461489443. OCLC 956749041.
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