ABOUT US   Our People :: Daniel A. Wachspress
Mr. Daniel A. Wachspress,   Senior Associate

Tel.: 609.538.0444 ext 114

Background
  • Joined CDI in 1983
  • Principal programmer of CDI's EHPIC/HERO and CHARM rotorcraft analysis software
  • MSE, Princeton University, 1982 in Mechanical and Aerospace Engineering
  • BSE, Princeton University, 1980
Research Interests
    Research, development, implementation and support of CDI's comprehensive rotorcraft analyses EHPIC and CHARM; development and implementation of advanced aerodynamic models for rotary-wing flight simulations and trainers; rotor aerodynamic and acoustic analysis and design; rotary-wing aircraft interactional aerodynamics; rotary-wing aircraft shipboard operations; multiple aircraft wake interaction analysis and real-time simulation; rotary-wing aircraft brownout analysis and real-time simulation.
Selected Publications
  • A High Fidelity Brownout Module for Real-Time Flight Simulations and Trainers," AHS 65th Annual Forum, Grapevine, TX, May 2009 (with G.R. Whitehouse, J.D. Keller, K. Yu, P. Gilmore, M. Dorsett, K. McClure)
  • High Fidelity Rotor Aerodynamic Module for Real-Time Rotorcraft Flight Simulation," AHS 64th Annual Forum, Montréal, Canada, May 2008, (with J.D. Keller, T.R. Quackenbush, G.R. Whitehouse and K. Yu)
  • "Impact of Rotor Design on Coaxial Rotor Performance, Wake Geometry and Noise," AHS 62nd Annual Forum, Phoenix, AZ, May 2006 (with T.R. Quackenbush).
  • "On Minimum Induced Power of the Helicopter Rotor," AHS 61st Annual Forum, Grapevine, TX, May 2005 (with T.R. Quackenbush and C.L. Solomon).
  • "Implementation of a Free-Vortex Wake Model in Real-Time Simulation of Rotorcraft," AHS 61st Annual Forum, Grapevine, TX, May 2005 (with J.F. Horn, D.O. Bridges and S. Rani).
  • "Distributed Multi-Vehicle Simulation Including High-Order Airwake Representation," AHS 60th Annual Forum, Baltimore, MD, June 2004 (with R.M. McKillip Jr., J.D. Keller, G.R. Whitehouse, T.R. Quackenbush and A.H. Boschitsch).
  • "BVI Noise Mitigation Using a Steady Flap Deflection," AHS 4th Decennial Specialist's Conference on Aeromechanics, San Francisco, CA, January 2004 (with T.R. Quackenbush).
  • "First-Principles, Free-Vortex Wake Model for Helicopters and Tiltrotors," AHS 59th Annual Forum, Phoenix, AZ, May 2003 (with T.R. Quackenbush and A.H. Boschitsch).
  • "Rotor Wake Evolution and Vortex Wake Encounter Analysis Methods for Terminal Area Operations," AHS 58th Annual Forum, Phoenix, AZ, June 2002 (with T.R. Quackenbush and J.D. Keller).
  • "BVI Noise Predictions with a Comprehensive Rotorcraft Analysis," AHS 57th Annual Forum, Washington, DC, June 2001 (with T.R. Quackenbush).
  • "Rotorcraft Interactional Aerodynamics with Fast Vortex/Fast Panel Methods," Journal of the American Helicopter Society, 48(4), October 2003 (with T.R. Quackenbush and A.H. Boschitsch).
  • "Rotor Aerodynamic Loads Computation Using a Constant Vorticity Contour Free Wake Model," Journal of Aircraft, Vol.32, Number 5, Sept.-Oct., 1995, pp. 911-920 (with T. R. Quackenbush and A.H. Boschitsch).