David Q. King Technical Fellow and Senior Technical Staff Aerojet Rocketdyne Redmond, Washington Education Princeton University Ph.D. in Aerospace Engineering 1978-1981 M.A. in Aerospace Engineering 1976-1978 Rutgers College of Engineering B.S. in Mechanical Engineering 1972-1976 Professional Experience Aerojet Rocketdyne (April 2014 – Present) Technical Fellow – Senior technical staff reporting to the Space Systems Chief Engineer to provide technical leadership in the development of electric propulsion systems. Dr. King is responsible for resolution of critical problems, setting goals and vision for technology development, skills development and leadership of the highest rank engineering staff. Aerojet Redmond, WA (May 2009 – March 2014) Technical Principal – Reporting to the Director of Engineering as Senior Technical Staff Dr. King is responsible for resolution of critical problems, setting goals and vision for technology development, skills development and technical leadership. Aerojet Redmond WA (January 2003 – May 2009) Director of Engineering Department – Dr. King leads the engineering department at Aerojet’s Redmond facility. Responsibilities include development of engineering capabilities and leadership of design, stress, thermal, reliability, materials & process, components, and chemistry laboratory disciplines. Aerojet Redmond, WA (July 1989 – December 2002) Chief Scientist – Dr. King is responsible for solving relatively complex problems in development, analysis and diagnostics of rocket engines, electronics, and plasma technology. On four occasions, Dr. King was nominated for Engineer/Scientist of the year and twice selected as The Engineer/Scientist of the Year for his contributions in electric propulsion. His background includes work on propulsion systems, electric propulsion thrusters including ion thrusters, Hall current thrusters, magnetoplasmadynamic thrusters, pulsed plasma thrusters, and arcjets, power electronics, and analysis of multiphase, plasma and chemically reacting flows. He is the inventor on 7 electric propulsion and plasma processing patents, and has authored over thirty papers and publications. Jet Propulsion Laboratory (February 1981 - June 1989) Supervisor, Electric Propulsion and Plasma Technology Group -- Dr. King was responsible for marketing, planning, and technical supervision of a group of 11 engineers and technicians. Projects included development of 100 kW steady-state Magnetoplasmadynamic (MPD) thrusters, 30 kW steady-state ammonia propellant arcjet thrusters, 10 kW ion thruster subsystem, and propulsion system and mission analysis. Dr. King has lead a variety of propulsion system studies for earth orbital maintenance and maneuvering as well as kW and MW power level interplanetary missions. Member Technical Staff -- Dr. King was responsible for installation of a large 2 m dia. by 8 m long vacuum tank and pulsed multimegawatt facility for operating quasi-steady magnetoplasmadynamic thrusters. He designed and developed a high performance MPD thruster, and conducted electrode wear measurements. Also, Dr. King solicited

and won an Air Force contract to conduct basic research in electrode wear in stead-state MPD thrusters. Dr. King marketed and won an AFRL contract to build a 30 kW ammonia arcjet and conduct the first such endurance test which demonstrated 573 hours of operation. Princeton University (July 1976 - February 1981) Mr. King's thesis developed a theory to explain how MPD thruster electrical characteristics are related to electrode geometry, thruster efficiency and propellant flow rate. This analysis was compared favorably with experimental measurements, and lead to the design of a high performance MPD thruster. Professional

Development: Design for Six Sigma, Green Belt certified by Sigma Breakthrough Technologies,

Inc., 2006.

The Dale Carnegie Course in Communications and Human Relations, 2006. Awards: Engineers’ Council Distinguished Engineering Project Achievement Award for “Test

Chamber Interactions with Electric Propulsion Devices,” February 2, 2015.

Rotary Nation Award for Space Achievement, 2014. Recognized for outstanding

technical leadership in the advancement of electric propulsion for thirty-seven years.

Engineer/Scientist of the Year, PRIMEX Aerospace Company, 1998. Recognized for

developing Zero Erosion™ Hall thruster technology flying on AF AEHF military

communication satellites.

Nominee for Engineer/Scientist of the Year, PRIMEX (formerly Olin Aerospace

Company), 1996. For resolving a life limiting start transient mechanism enabling

successful qualification of the MR-510 arcjet system.

AIAA Certificate of Merit for the outstanding technical paper entitled "Single Fluid

Simulations of Low Power Hydrogen Arcjets", 32nd AIAA/ASME/SAE/ASEE Joint

Propulsion Conference, July 2, 1996.

Engineer/Scientist of the Year, Olin Aerospace Company (formerly Rocket Research

Company), 1993. For developing technology enabling long life, high performance

arcjet thrusters.

Nominee for Engineer/Scientist of the Year, PRIMEX (formerly Rocket Research

Company), 1991. For proving root cause and method of resolving an on-orbit failure

of MR-402 resistojet thrusters.

Guggenheim Fellow, Princeton University, 1976-1977.

Patents: “UNIFORM GAS DISTRIBUTION IN ION ACCELERATORS WITH CLOSED

ELECTRON DRIFT,” Inventors: Arnold W. Voigt, David Q. King, Kristi H. De Grys,

Roger M. Myers, U.S. Patent No. 6,612,105, Issued September 2, 2003.

“METHOD AND APPARATUS FOR MAGNETIC VOLTAGE ISOLATION,”

Inventors: Steven D. Meyer and David Q. King, 6,518,692, Issued February 11, 2003.

“PLUME SHIELD FOR ION ACCELERATORS,” Inventors: Dennis L. Tilley, David

Q. King, U.S. Patent No. 6,507,142, Issued January 14, 2003.

“MULTISTAGE ION ACCELERATORS WITH CLOSED ELECTRON DRIFT”,

Inventor: David Q. King, U.S. Patent No. 6,215,124, Issued April 10, 2001.

“MAGNETIC FLUX SHAPING IN ION ACCELERATORS WITH CLOSED

ELECTRON DRIFT,” Inventors: David Q. King, Kristi H. de Grys, Randall S.

Aadland, Dennis L. Tilley, Arnold W. Voigt, U.S. Patent No. 6,208,080, Issued March

27, 2001.

“APPARATUS FOR SYNTHESIZING DIAMOND FILMS UTILIZING AN ARC

PLASMA,” Steven C. Knoweles, Alan E. Kull, George W. Butler, David Q. King, U.S.

Patent No. 5,560,779, Issued October 1, 1996.

“HIGH TEMPERATURE REFRACTORY MEMBER WITH RADIATION EMISSIVE

OVERCOAT,” W.D. Deininger and David Q. King, U.S. Patent No. 4,928,027, Issued

May 22, 1990.

Publications:

1. Jason D. Frieman, Scott T. King, Mitchell L.R. Walker, Vadim Khayms, David Q. King, “Role of

a Conducting Vacuum Chamber in the Hall Effect Thruster Electrical Circuit,” J. Propulsion and

Power, V 30, No. 6, Nov-Dec 2014.

2. W. Andrew Hoskins, R. Joseph Cassady, Olwen Morgan, Roger M. Myers, Fred Wilson, David Q.

King and Kristi de Grys, “30 Years of Electric Propulsion Flight Experience at Aerojet

Rocketdyne,” 33rd International Electric Propulsion Conference, Washington, DC, USA, October

7-10, 2013, IEPC-2013-439.

3. Luke DeMaster-Smith, Scott Kimbrel, Christian Carpenter, Steve Overton, Roger Myers, and

David King, “Solar Electric Propulsion (SEP) Benefits for Near Term Space Exploration,” 33rd

International Electric Propulsion Conference, Washington, DC, USA, October 7-10, 2013, IEPC-

2013-045.

4. Rostislav Spektor, Edward J. Beiting, Aerospace Corp., Marcus Byeman, David King, Alex

Mathers, Aerojet Rocketdyne, Mark Luttrell, Jonathan Paisley, Lockheed Martin, “Infared

Thermographic Imaging for Hall Thrusters,” 33rd International Electric Propulaion Conference,

Washington, DC, October 2013, IEPC-2013-452.

5. Fred Wilson, Aerojet; W. Andrew Hoskins, Aerojet; Randall Aadland, Aerojet; Jeffrey Monheiser,

Aerojet; Nicole Meckel, Aerojet; Jonathan Polaha, Aerojet; David King, Aerojet, “Status of Ion

Propulsion System Development at Aerojet Redmond,” 39th Joint Propulsion Conference, July

2003, AIAA-2003-4710.

6. Jack Fisher, Alfred Wilson, David King, Steve Meyer, Kristi de Grys, Lance Werthman, “The

Development And Qualification Of A 4.5 Kw Hall Thruster Propulsion System,” 28th

International Electric Propulsion Conference, Toulouse, Fr, March 17-19, 2003.

7. King, D.Q., Hoskins, W.A., de Grys, K.H., “Compact 50 kW Hall Thruster Development,” 51st Joint Army-Navy-NASA-Air Force (JANNAF) Propulsion Meeting, Orlando FL, November 18-21, 2002.

8. Kristi de Grys, Fred Wilson, Nicole Meckel, Chris Rayburn, David King, Lance Werthman,

Vadim Khayms, “EXTENDED DURATION LIFE TESTING OF BPT-4000 FLIGHTWEIGHT

THRUSTER,” AIAA-2002-3680, July, 2002.

9. Jack Fisher, Alfred Wilson, David King, Steve Meyer, Kristi de Grys, and Lance Werthman,” THE DEVELOPMENT AND QUALIFICATION OF A 4.5 KW HALL THRUSTER

PROPULSION SYSTEM,” AIAA-2002-3679, July 2002.

10. W. Andrew Hoskins, David King, and Alex Kristalinski, Tom Kerslake, Todd Peterson, Dale

Ferguson, Dave Snyder, Jongeward, Ioannis Mikellides, Ralph Carruth, Mary Hovater, and Todd

Schneider, “DIRECT DRIVE HALL THRUSTER SYSTEM STUDY,” AIAA-2002-3668, July 2002.

11. David Q. King, Kristi de Grys, and W. Andrew Hoskins, “Compact 50 kW Hall Thruster

Development,” AIAA-2002-3677, July 2002.

12. Kristi de Grys, Nicole Meckel, George Callis, Doug Greisen, Andrew Hoskins, David King and

Fred Wilson, Lance Werthman, Vadim Khayms, “Development and Testing of a 4500 Watt Flight

Type Hall Thruster and Cathode,” IEPC-01-011, International Electric Propulsion Conference,

October 15-19, 2001.

13. Jack Fisher, Alfred Wilson, David King, Steve Meyer, Carl Engelbrecht, Kristi de Grys, and

Lance Werthman, “The Development and Qualification of a 4.5 kW Hall Thruster Propulsion

System for GEO Satellite Applications,” IEPC-01-010, International Electric Propulsion

Conference, October 15-19, 2001.

14. King, D.Q., de Grys, K.H., Jankovsky, R, “Multi-Mode Hall Thruster Development”, AIAA-2001-3778, 2001.

15. Katz, I., Jongeward, G., Davis, V., Mandell, M., Mikellides, SAIC, Dressler, R., AFRL, Boyd, I., University of Michigan, Kannenberg, Lockheed Martin, Pollard, J., Aerospace Corp., King, D., General Dynamics, “A Hall Effect Thruster Plume Model Including Large-Angle Elastic Scattering,” AIAA 2001-3355, July 2001.

16. James E. Pollard, Kevin D. Diamant, Vadim Khayms and Lance Werthman, David Q. King and

Kristi H. de Grys, “ION FLUX, ENERGY, AND CHARGE-STATE MEASUREMENTS FOR THE

BPT-4000 HALL THRUSTER,” AIAA-2001-3351, July 2001.

17. D. King, N. Meckel, R. Aadland, C. Sota, M. Patterson, “Design for Manufacturing Improvements

and Demonstration of a 30 cm Ion Thruster,” AIAA-2000-3271.

18. Wilson, F., King, D., Aadland, R., Tilley, D., de Grys,K.H., Hruby, V., Pote, B., “Development

Status of the PRIMEX BPT Family of Hall Thruster Systems,” AIAA 99-2573, 1999.

19. D. King, D. Tilley, R. Aadland, K. Nottingham, R. Smith, C. Roberts, V. Hruby, B. Pote, J.

Monheiser, “Development of the BPT Family of U.S.-Designed Hall Current Thruster for

Commercial LEO and GEO Applications,” AIAA-98-3338, June, 1998.

20. R.J. Cassady, D.Q. King, N.J. Meckel, “Repositioning Mission Benefits Comparison for Near-

Term Electric Propulsion Technology,” AIAA 94-3002.

21. G.W. Butler, A.E. Kull, D.Q. King, “Single Fluid Simulations of Low Power Hydrogen Arcjets,”

AIAA-94-2870, June 1994.

22. G.W. Butler, R. J. Cassady, D.Q. King, “Directions For Arcjet Technology Development,” AIAA

94-2652, June 1994.

23. G.W. Butler, A.E. Kull, and D.Q. King, “Numerical Simulations of Hydrogen Arcjet

Performance,” IEPC-93-249, 23rd International Electric Propulsion Conference, Seattle, WA,

Sept. 13-16, 1993.

24. M.A. Cappelli, J.G. Liebeskind, R.K. Hanson, G.W. Butler, and D.Q. King, “A Direct Comparison

of Hydrogen Arcjet Thruster Properties to Model Predictions,” IEPC-93-220, 23rd International

Electric Propulsion Conference, Seattle, WA, Sept. 13-16, 1993.

25. G.W. Butler, R.J. Cassady, W.A. Hoskins, D.Q. King, A.E. Kull, “Performance of Advanced

Concept Hydrogen Arcjet Anodes,” IEPC-93-211, 23rd International Electric Propulsion

Conference, Seattle, WA, Sept. 13-16, 1993.

26. G.W. Butler, B.A. Kashiwa, D.Q. King, “Numerical Modeling of Arcjet Performance,” AIAA-90-

1474, June 1990.

27. D.Q. King, G.W. Butler, “Modeling and Measurement of N2 Arcjet Performance,” AIAA-90-2616,

July 1990.

28. G.W. Butler, R.J. Cassady, W.A. Hoskins, D.Q. King, A.E. Kull, “Performance of Advanced

Concept Hydrogen Arcjet Anodes,” IEPC-93-211, 23rd International Electric Propulsion Conf,

Sept. 1993.

29. M.A. Cappelli, J.G. Liebeskind, R.K.Hanson, G.W. Butler, D.Q. King, “A Direct Comparison of

Hydrogen Arcjet Thruster Properties to Model Predictions,” IEPC-93-220, Sept. 1993.

30. M.A. Cappelli, J.G. Liebeskind, R.K.Hanson, G.W. Butler, D.Q. King, “A Comparison of Arcjet

Plume Properties to Model Predictions,” AIAA-1993-0820.

31. G.W. Butler, A.E. Kull, D.Q. King, “Numerical Simulations of Hydrogen Arcjet Performance,”

IEPC-93-249, 23rd International Electric Propulsion Conference, Sept. 1993.

32. D.Q. King, “An Approach for Quasi 1-D MPD Analysis,” AIAA 89-2600.

33. B. Palaszewski, J. Brophy, D. King, “Nuclear-Electric Propulsion: Manned Mars Propulsion

Options,” JPL Report No. XXX, 1988.

34. T. Pivirotto, D. King, W. Deininger, “Long Duration Test of a 30-kW Class Thermal Arcjet

Engine,” AIAA-1987-1947.

35. E.P. Coomes, D.Q. King, J.M. Cuta, and B.J. Webb, “The Pegusus Drive: A Multi-Megawatt

Nuclear Electric Propulsion System,” AIAA-87-1038.

36. T. Pivirotto, D. King, W. Deininger, J. Brophy, “The Design and Operating Characteristics of a

30 kW Thermal Arcjet Engine for Space Propulsion,” AIAA-86-1508, June 1986.

37. D.Q. King and J.C. Sercel, “A Review of the Multi-Megawatt MPD Thruster and Current Mission

Applications,” AIAA-86-1437.

38. J.R. Brophy, D.Q. King, “Diffuser Investigation for Advanced Multimegawatt MPD Engine

Development,” AIAA-86-1436.

39. E.P. Coomes, J.M. Cuta, B.J. Webb, D.Q. King, M.J. Patterson, “Pegasus: A Multi-Megawatt

Nuclear Electric Propulsion System,” Vol. 2 pp. 769-786, NASA Manned Mars Missions Working

Group Papers, NASA M002 June 1986.

40. D.Q. King, “Feasibility of Steady-State, Multi-Megawatt MPD Thrusters,” AIAA-85-2004, Sept.

1985.

41. D.Q. King, R.J. Vondra, “Development Status and Projected Power Requirements of MPD

Thrusters,” Space Nuclear Propulsion Workshop, Dec 10-13, 1984, Los Alamos National

Laboratory, pp. 661-670, June 1985.

42. L.K. Rudolph, D.Q. King, “100 kWe Magnetoplasmadynamic Thruster System Design,” J.

Spacecraft and Rockets V21 No. 6, Nov-Dec 1984 pp. 563-572.

43. S.B. Gabriel and D.Q. King, “Thrust for Interorbit Propulsion: A Question of Lifetime,” Orbit-

Raising and Maneuvering Propulsion: Research Status and Needs, edited by L.H. Caveny, Vol.

89 of Progress in Astronautics and Aeronautics, 1984.

44. L.K. Rudolph, D.Q. King, “Electromagnetic Thrusters for Spacecraft Prime Propulsion,”

AIAA/SAE/ASME 20th Joint Propulsion Conference, June 1984, AIAA-84-1446.

45. D.Q. King, W.W. Smith, R.G. Jahn, K.E. Clark, “Effect of Thrust Chamber Configuration on

MPD Arcjet Performance,” pp. 504-517 in Electric Propulsion and It’s Applications to Space

Missions, edited by R.C. Finke, Vol. 79 of Progress in Astronautics and Aeronautics, AIAA press,

1981.

46. D.Q. King, K.E. Clark, R.G. Jahn, “Effect of Choked Flow on Terminal Characteristics of MPD

Thrusters,” AIAA-81-0686, April 1981.