Dr. Potvin's homepage

 Instruction: Physics and applied physics
 Research: Physics and aerodynamics of parachutes
 Research: Biomechanics of lunge feeding by baleen whales

    Department of Physics
    Shannon Hall Rm 111,
    Saint Louis University,
    3511 Laclede Ave.
    St. Louis, MO 63103, USA.
    314-977-8424

    potvinj@slu.edu

Education - Ratings - Professional Service

  • B. Sc. in Physics, 1978, Universite Laval , Quebec City, Canada
  • M. Sc. in Physics, 1980, Universite Laval, Quebec City, Canada
  • Ph. D. in Physics, 1985, University of Colorado-Boulder
  • FAA Senior Parachute Rigger (since 1998)
  • USPA Parachute Jumpmaster and Instructor (S/L) 1994 - 2001
  • Test and sport parachutist with over 2600 jumps
  • Co-founder, with Mr. Gary Peek , of the Parks College Parachute Research Group (www.pcprg.com)
  • Course Director, H. G. Heinrich Parachute Systems Short Course , since 2001
  • Member, AIAA Aerodynamic Decelerator Systems Technical Committee, since 1995; Chair (2013 - 2015)
  • Member, American Institute for Aeronautics and Astronautics (AIAA), since 1995
  • Member, Society for Integrative and Comparative Biology (SICB), since 2010.

Honors and Awards 

  • Associate Fellow, American Institute for Aeronautics and Astronautics, January 2009

Teaching Experience at Saint Louis University

  • Unsteady Aerodynamics (graduate level)
  • Parachute Systems & Design (graduate level)
  • Bio-mechanics for zoology
  • Introductory College Physics I and II (100-level)- with or without calculus
  • Modern Physics
  • Introduction to Astronomy
  • Stellar Structure and Evolution
  • Instruments for Astrophysics and Cosmology
  • Optics (wave optics and laser physics)
  • Calculus I
  • Introduction to Weather (while at Parks College in Cahokia IL)
  • Physical Processes in the Atmosphere (while at Parks - Cahokia)

Research Interests

  • Basic physics: Nature of the force of drag during decelerating and accelerating motions.
  • Fluid mechanics: Interaction between fluids and limp structures such as fabric materials.
  • Physical zoology: hydrodynamics and physics of whale lunge feeding
  • Physical zoology: CFD modeling of the hydrodynamics toothed and baleen whales (non-feeding motion) 
  • Aerodynamics: Inflation and flight of parachutes.
  • Engineering: Design and testing new parachutes for cargo airdrop, government jumpers and sport skydivers.
  • Test parachuting - Check out the movie at the bottom of this page

Publications from 1980 to 1995: Elementary particles and high energy physics

  • Available on request

Publications from 2009 to present: Biomechanics of lunge feeding by baleen whales; hydrodynamics of other critters

  • Goldbogen, J. A., Potvin, J., Fish, F. E. (2015). Hydrodynamics. In “Marine Mammal Physiology”. Editors: Michael Castellini and Jo-Ann Mellish. CRC Press. In press.
  • Goldbogen, JA,  Shadwick, RE ,  Lillie, MA, Piscitelli, MA, Potvin, J ,  Pyenson, ND,  Vogl, AW; "Using morphology to infer physiology: case studies on rorqual whales (Balaenopteridae)" (2015). Canadian Journal of Zoology Vol. 93, pp. 687 - 700.  dx.doi.org/10.1139/cjz-2014-0311.
  • Gleiss, A. C., Potvin, J., Keleher, J. J., Whitty, J. M. Goldbogen, J. A., Morgan, D. L. "Mechanical challenges to freshwater residency in sharks and rays". Journal of Experimental Biology (2015) Vol. 218, pp. 1099- 1110; doi: 10.1242/jeb.114868.
  • Robert E. Shadwick, Jeremy A. Goldbogen, Jean Potvin, Nicholas D Pyenson, and Wayne Vogl; "Novel muscle and connective tissue design enables hyper-extensibility and controls engulfment volume in lunge-feeding whales". Journal of Experimental Biology (2013) Vol. 216, pp. 2691- 2701; doi: 10.1242/jeb.081752.
  • J. Potvin, J. A. Goldbogen and R. Shadwick; "Metabolic Expenditures of Lunge Feeding Rorquals Across Scale: Implications for the Evolution of Filter Feeding and the Limits to Maximum Body Size". PLoS ONE (2012) 7(9): e44854. doi:10.1371/journal.pone.0044854.  Online only and open access: http://dx.plos.org/10.1371/journal.pone.0044854 . 
  • J. Goldbogen, J. Calambokidis, D. Croll, M. McKenna, E. Oleson, J. Potvin, N. Pyenson, G. Schorr, R.  Shadwick, B. Tershy, "Scaling of lunge feeding performance in rorqual whales: mass-specific energy expenditure increases with body size and progressively limits diving capacity" Functional Ecology (2012) Vol. 26, pp. 216-226.
  • J. Wiedenmann, K.A. Cresswell, J. Goldbogen, J. Potvin and M. Mangel, "Exploring the effects of reductions in krill biomass in the Southern Ocean on blue whales using a state-dependent foraging model". Ecological Modelling (2011) 222, pp. 3366 - 3379. 
  • J. A. Goldbogen, J. Calambokidis,  E. Oleson, J. Potvin, N.D. Pyenson, G. Schorr and R.E. Shadwick, "Mechanics, hydrodynamics and energetics of blue whale lunge feeding: efficiency dependence on krill density". Journal of Experimental Biology (2011) 214, pp. 131 - 146; doi.1242/jeb.048157).
  • J. Potvin, J. A. Goldbogen and R. Shadwick;  "Scaling of lunge feeding in rorqual whales: an integrated model of engulfment duration". Journal of Theoretical Biology (2010) 267, pp. 437 - 453. (Also published on-line doi:10.1016/j.jtbi.2010.08.026).
  • J. A. Goldbogen, J. Potvin and R. Shadwick; "Skull and buccal cavity allometry increase mass-specific engulfment capacity in fin whales". Proc. Roy. Soc B - Biological Sciences. (2010) 277, 861-868. (doi:10.1098/rspb.2009.168). (PDF) (Blog from Discover magazine)
  • J. Potvin, J. A. Goldbogen and R. Shadwick "From Parachutes to Whales: Applying the Unsteady Aerodynamics of Inflation to the Study of Lunge Feeding by Whales". Paper AIAA-2009-2954 presented at the 20th AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, 4 - 7 May 2009, Seattle, WA.
  • J. Potvin, J. A. Goldbogen and R. Shadwick "Passive Versus Active Engulfment: Verdict From Trajectory Simulations of Lunge-Feeding Fin Whales Balaenoptera Physalus". J. Royal Soc. Interface. Vol 6, No. 40, pp. 1005-1025 (2009).  In print on November 6th, 2009. Published online January 20, 2009, doi: 10.1098/?rsif.2008.0492 (PDF copy).

Publications from 1995 to present: Physics and aerodynamics of parachutes

  • McQuilling, M., Reyes, P. and Potvin, J.;"CFD Simulation of a HUMVEE Strapped to a Standard US Army Airdrop Platform". Paper AIAA-2015-2101. Presented at the 23th AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, Daytona Beach, FL, March 30 - April 2, 2015.
  • McQuilling, M., Reyes, P. and Potvin, J.;"CFD Simulations of a Double Annulus Parachute System for Cargo Airdrop, Using Inflated Shapes Informed by Photogrammetry". Paper AIAA-2015-2169. Presented at the 23th AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, Daytona Beach, FL, March 30 - April 2, 2015.
  • Potvin, J., and Peek, G.;"Peak Load of a Drogue: Applying the Momentum-Impulse Theorem to Infinite Mass Inflation".Paper AIAA-2015-2181. Presented at the 23th AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, Daytona Beach, FL, March 30 - April 2, 2015.
  • Potvin, J.,  McQuilling, M., and Kavanaugh, J.; " Geometric Porosity, as a Dynamically Driven Process: Inflation versus Steady Descent". Paper AIAA-2015-2182. Presented at the 23th AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, Daytona Beach, FL, March 30 - April 2, 2015.
  • Potvin, J., Kavanaugh, J. and McQuilling, M.; "A Second Look at Geometric Porosity, as Revealed by Computational Fluid Dynamics (CFD)". Paper AIAA-2013-1320. Presented at the 22th AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, Daytona Beach, FL, March 26-28, 2013.
  • N. Freed, McQuilling, M., and Potvin, J.; "Investigation of Outer Ring Aerodynamics of an Annular Parachute". Paper AIAA-2013-1280. Presented at the 22th AIAA AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, Daytona Beach, FL, March 26-28, 2013.
  • M. McQuilling, and Potvin, J.; "Forebody Wake Effects on the Aerodynamics of an Annular Parachute". Paper AIAA-2012-3332. Presented at the 21th AIAA Computational Fluid Dynamics Conference, New Orleans, Louisiana, June 24-28, 2012.  
  • M. McQuilling, and Potvin, J.; "Effect of the Transient Nature of Flow on Annular Parachute Drag Prediction". Journal of Aircraft, 2012, vol. 49, no. 2, pp. 566-575 .
  • M. McQuilling, and Potvin, J.; "Effects of the Transient Nature of Flow on Annular Parachute Drag Prediction". Paper AIAA-2011-3704. Presented at the 20th AIAA Computational Fluid Dynamics Conference, Honolulu, Hawaii, June 27-30, 2011.
  • J. Potvin, K. Bergeron, G. Brown, R. Charles, K. Desabrais, H. Johari, V., Kumar,M. McQuilling, A. Morris, G. Noetscher, B. Tutt "The Road Ahead: A White Paper on the Development, Testing and Use of Advanced Numerical Modeling for Aerodynamic Decelerator Systems Design and Analysis". Paper AIAA-2011-2501. Presented at the 21st AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, 23-26 May 2011, Dublin, Ireland.
  • J. Potvin and Mc. McQuilling, "The Bi-model: Using CFD in simulations of slowly-inflating low-porosity hemispherical parachutes". Paper
  • AIAA-2011-2542. Presented at the 21st AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, 23-26 May 2011, Dublin, Ireland.
  • M. McQuilling, J. Potvin and J. Riley, "Simulating the flows about cargo containers used during parachute airdrop operations". Journal of Aircraft 48, No. 4, pp. 1405-1411, 2011.
  • M. McQuilling, J. Potvin and J. Riley, "Simulating the flows about cargo containers used during parachute airdrop operations". Paper AIAA-2010-4565. Presented at the 28th AIAA Applied Aerodynamics Conference. June 28 - July 1, 2010; Chicago IL. 
  • "Simple Calculation of Skirt Reefing Line Tension on Low-Porosity Canopies Used at Very Small Reefing ratios". With S. Patel. Paper AIAA-2009-3005 presented at the 20th AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, 4 - 7 May 2009, Seattle, WA.
  • "Updating and Upgrading the World's Database on the Opening Shock Factor Ck" . Paper AIAA-2009-2905 presented at the 20th AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, 4 - 7 May 2009, Seattle, WA.
  • "General Mass Capture Model for Swiftly-Opening Parachutes". Journal of Aircraft45, No. 5, pp. 1689-1700, 2008.
  • "Three-Stage Model for Slider-Reefed Parafoil Inflation"; AIAA paper 2007-2501; with G. Peek; presented at the 19th AIAA Aerodynamic Decelerator Systems Conference and Seminar, Williamsburg, VA, May 21-24, 2007. Download a copy
  • "Semi-Numerical Derivation of the Opening Shock Factor and Inflation Time for Slider-Reefed Parafoils"; AIAA paper 2007-2508; with B. Hurst and G. Peek; presented at the 19th AIAA Aerodynamic Decelerator Systems Conference and Seminar, Williamsburg, VA, May 21-24, 2007. Download a copy
  • "Testing Without Load Cells - Can Opening Shock Be Estimated From Video Data Only?"; AIAA paper 2007-2551; with G. Peek; presented at the 19th AIAA Aerodynamic Decelerator Systems Conference and Seminar, Williamsburg, VA, May 21-24, 2007. Download a copy , and a copy of the talk
  • "Comparative DSSA Study of Payload-Container Dynamics Prior to, During and After Parachute Inflation"; AIAA paper 2007-2564; with R. Charles and K. Desabrais; presented at the 19th AIAA Aerodynamic Decelerator Systems Conference and Seminar, Williamsburg, VA, May 21-24, 2007.
  • "Momentum-Impulse Balance and Parachute Inflation: Rocket-Propelled Payloads"; Journal of Aircraft,44, No. 3, pp. 1039-1042, 2007. Download a copy of a talk that summarizes the findings of the Momentum-Impulse series listed below
  • "Momentum-Impulse Balance and Parachute Inflation: Fixed-Point Drops "; Journal of Aircraft,44, No. 3, pp. 1026-1029, 2007.
  • "Momentum-Impulse Balance and Parachute Inflation: Clusters "; Journal of Aircraft,44, No. 2, pp. 687-691, 2007.
  • "Momentum-Impulse Balance and Parachute Inflation: Dis-Reefing"; Journal of Aircraft,44, No. 2, pp. 691-694, 2007.
  • "Universality Considerations for Graphing Parachute Opening Shock Factor Versus Mass Ratio "; Journal of Aircraft,44, No. 2, pp. 528 - 538, 2007.
  • "A New Inflation Model for Low-Porosity Hemispherical Parachutes: Validation and Implementation in PIMS V3.0"; AIAA paper 2005-1687; with J. Papke, E. Brighton ,M. Farmer and G. Peek; presented at the 18th AIAA Aerodynamic Decelerator Systems Conference and Seminar, Munich, Germany, May 23-26, 2005.
  • "Modeling the Interaction of Sub-scale Parachutes With Atmospheric Turbulent Eddies"; with R. Wright;AIAA paper 2005-1675; presented at the 18th AIAA Aerodynamic Decelerator Systems Conference and Seminar, Munich, Germany, May 23-26, 2005.
  • "Inflation and Steady-Descent Characteristics of Truncated Cone Decelerators"; with G. E. Peek; AIAA paper 2005-1620; presented at the 18th AIAA Aerodynamic Decelerator Systems Conference and Seminar, Munich, Germany, May 23-26, 2005.
  • "Glide Performance Study of Standard and Hybrid Cruciform Parachutes"; with J. Papke, G. Peek, T. Hawthorne, E. Brighton and R. J. Benney; paper AIAA-2003-2160; 17thAIAA Aerodynamic Decelerator Systems Technology Conference and Seminar, Monterey, CA, May 19 -22, 2003; pp. 412 - 429.
  • " New Model of Decelerating Bluff Body Drag ", with G. Peek and B. Brocato; Journal of Aircraft,40, No. 2, pp. 370-377, 2003.
  • "Accelerating Disk Drag: Theory and Applications"; Paper AIAA-2002-3055; 20th AIAA Applied Aerodynamics Conference, St. Louis, MO, June 24 -26, 2002.
  • "Deceleration Dynamics of Unreefed Cruciform and Flat Circular Parachutes During and After Inflation",with G. Peek, B. Brocato, R. Kutz, C. Manglano and B. Yavitz; AIAA Paper 2001, AIAA-2001-2028.
  • "Inflation and Glide Studies of Slider-reefed Cruciform Parachutes"; with G. Peek, B. Brocato, T. Perschbacher, R. Kutz and R. Benney; AIAA Paper, AIAA-2001-2021.
  • "More Scaling Laws for Ram-Air Parachute Inflation"; AIAA Paper, AIAA-2001-2072.
  • "Altitude- and Weight Scaling Laws for Ram-Air Parachute Inflation". Journal of Aircraft, Vol. 38, No. 5, pp.956-958, 2001.
  • "Fluid-Structure Interactions of a Cross-Parachute: Numerical Simulation"; with R. Stein, R. Benney and T. Tezduyar. To appear in Computer Methods in Applied Mechanics and Engineering in 2001.
  • "Modeling the Inflation of Ram-Air Parachutes Reefed with Sliders"; with B. Brocato and G. Peek . Journal of Aircraft,Vol. 38, No. 5, pp.818-827, 2001.
  • "Experimental Validation of the Ideal Parachute Model: A Status Report"; with B. Brocato and G. Peek; AIAA paper 1999, AIAA-99-1746.
  • "The Improved Ideal Parachute Model and Its Application to the Study of Inflation Dydnamics of Slider-Reefed Ram-Air and Round Parachutes"; with T. Perschbacher; AIAA paper 1999, AIAA-99-1750.
  • "In-Flight Study of Cell Pressurization Inside Inflating Smokejumper Ram-Air Parachutes; with G. Peek; AIAA paper 1999, AIAA-99-1756.
  • "Experimental Study of Fluid-Structure Interactions on a Cross Parachute: Comparision of wind tunneldata and Drop Data with CFD Predictions"; with B. Brocato, L. Esteve, D. Garcia, C. Manglano, G. Peek, K. Stein, R. Benney, R. Alamat and J. Little; AIAA paper 1999, AIAA-99-1737.
  • "Fluid-Structure Interaction Simulation of Cross Parachute: Comparison of Numerical Predictions with Wind Tunnel Data"; with Stein, K., Benney, R., Kalro, V., Tezduyar, and T., Bretl, T. ; AIAA paper 1999; AIAA-99-1725.
  • "Wind Tunnel Study of Cruciform Parachutes Folded in Various Configurations"; with L. Esteve, G. Peek, R. Alamat and J. Little; AIAA paper 1999, AIAA-99-1739
  • "A Simple Description of Airflow Characteristics Inside an Unfolding Parachute"; Journal of Aircraft, Vol. 36, No. 5, pp. 809 - 818, 1999.
  • "Parachute Inflation", 1998 McGraw-Hill Yearbook of Science and Technology.
  • "In-Flight Study of Pressure Differentials Near the Surfaces of an Inflating Ram-Air Parachute; AIAA paper 1998, AIAA-98-2529.
  • "Testing a New Model of Ram-Air Parachute Inflation"; The Aeronautical Journal, Vol. 101, pp. 299-313,1997.
  • "The Parks College Ram-Air Parachute Deployment Study: A Status Report"; with R. Montanez and G.E. Peek, AIAA paper 1997, AIAA-97-1426.
  • "Wind Tunnel Investigation of Ram-Air Parachute Cell Pressurization" with R. Montanez and G.E. Peek, AIAA paper 1997, AIAA-97-1524.
  • "Theoretical and Experimental Studies of Ram-Air Parachute Deployment Observable Variance", AIAA paper 1997, AIAA-97-1544.
  • "Deployment Model for Slider-Reefed Ram-Air Parachutes", AIAA paper 1995, 95-1564.