Publications
These documents are pdf's and require an application such as Adobe Reader to open them. Download Acrobat Reader
2018
Acree, C.W., Sheikman, A., "Development and Initial Testing of the Tiltrotor Test Rig," Presented at the AHS International 74th Annual Forum & Technology Display, Phoenix, Arizona, May 14–17, 2018. Download
Ament, G., Koning, W. J. F., "Isolated Rotor Forward Flight Testing from One Atmosphere Down to Martian Atmospheric Densities," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16–18, 2018. Download
Ament, G. A., Koning, W. J. F., and Perez Perez, B. N., "Isolated Rotor Forward Flight Testing at Martian Atmospheric Density Data Report," NASA/CR–2018–219736 DownloadBalaram, J., Canham, T., Duncan, C., Golombek, M., Grip, H.F., Johnson, W., Justin Maki, J., Quon, A., Stern, R., and David Zhu, D., "Mars Helicopter Technology Demonstrator," 2018 AIAA Guidance, Navigation, and Control Conference, AIAA SciTech Forum, 8–12 January 2018, Kissimmee, Florida Download
Cummings,H., "Physical and Biological Properties of Cobalt and Copper-Doped Calcium Phosphates as Bone Substitute Materials," NASA/TM–2018–220015. Download
Danis,R., Green, M., Freeman, J., Hall, D., "Examining the Conceptual Design Process for Future Hybrid-Electric Rotorcraft," NASA/CR–2018–219897. Download
Dueball, R., Hainline, S., Higgins, E., "Investigation of Turbulence Generated by Upwind Blockages at the Inlet of a 1/50th-scale Model of the 80- by 120-Foot Wind Tunnel," NASA/TM 2018-219908, Download
Dromiak, H., Chitan, A., Schoultz, S., Wadcock A., "Effect of Upstream Buildings on the Aerodynamic Flow Quality in the Test Section of the National Full-Scale Aerodynamics Complex 80- by 120-Foot Wind Tunnel" NASA/TM–2019–220053 DownloadDromiak, H., "What to Do with an Army of Interns" Vertiflight Magazine, November/December, 2018 Download
Gregory, D., Cornelius, J., Waltermire, S., and Loob, C., Schatzman, N.,"Acoustic Testing of Five Multicopter UAS in the U.S. Army 7- by 10-Foot Wind Tunnel" NASA/TM–2018–219894 Download Publication—Appendices available on request
Grip, H.F., Scharf, D.P., Malpica, C., Johnson, W., Mandic, M., Singh, G., Young, L., "Guidance and Control for a Mars Helicopter," 2018 AIAA Guidance, Navigation, and Control Conference, AIAA SciTech Forum, 8-12 January 2018, Kissimmee, Florida Download
Harris, F., "Theory Validation–2 Points of View," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16-18, 2018 Download
Johnson, W., Silva, C., Solis, E., "Multidisciplinary Conceptual Design for Reduced-Emission Rotorcraft," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16-18, 2018 Download
Johnson,, W., Silva, C., "Observations from Exploration of VTOL Urban Air Mobility Designs" Presented at the 7th Asian/Australian Rotorcraft Forum, Jeju Island, Korea, October 30–November 1, 2018 Download
Khurana, M., Silva, C., "Optimization of a High Efficiency Civil Tiltrotor platform for Low Emission Flight," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16-18, 2018 Download
Koning, W. J. F., Johnson, W., Allan, B. G., "Generation of Mars Helicopter Rotor Model for Comprehensive Analyses," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16–18, 2018 Download
Koning, W. J. F., Johnson, W., Grip, H., "Improved Mars Helicopter Aerodynamic Rotor Model for Comprehensive Analyses," Presented at the 44th European Rotorcraft Forum, Delft, the Netherlands, 18-21 September, 2018. 2018 Download
Koning, W. J. F., Romander, E. A., and Johnson, W., "Low Reynolds Number Airfoil Evaluation for the Mars Helicopter Rotor," AHS International 74th Annual Forum & Technology Display, Phoenix, Arizona, May 14–17, 2018. Download
Koning, W., Russell, C., Solis, E.,Theodore, C., "A Mid-Fidelity Computational Fluid Dynamics Analysis of the Elytron 4S UAV Concept," NASA/TM–2018–219788 Download
Koning, W., "Generation of Performance Model for the Aeolian Wind Tunnel (AWT) Rotor at Reduced Pressure," NASA/CR–2018–219737 Download
Kottapalli, S., Acree, C.W., "Analytical Performance, Loads, and Aeroelastic Stability of a Full-Scale Isolated Proprotor," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16-18, 2018 Download
Lawrence, B., Theodore, C.R., and Johnson, W., T. Berger, T.,"A Handling Qualities Analysis Tool for Rotorcraft Conceptual Designs,"The Aeronautical Journal, June, 2018, Volume 122 No. 1252 960, pp 960–987. Download
Meyn, L., "Rotorcraft Optimization Tools: Incorporating Rotorcraft Design Codes into Multi-Disciplinary Design, Analysis, and Optimization," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16-18, 2018 Download
Perez Perez, B.N., "Rotor CFD Analysis at Terrestrial and Martian Atmospheric Densities," NASA/CR–2018–219780 Download
Rajagopalan, G., Thistle, J., Polzin, W., "The Potential of GPU Computing for Design in RotCFD," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16-18, 2018 Download
Russell, C., Theodore, C., Sekula, M., "Incorporating Test Data for Small UAS at the Conceptual Design Level," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16-18, 2018 Download
Russell, C., Acree, C.W., "Modal Test and Analysis of the NASA Tiltrotor Test Rig," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16-18, 2018 Download
Russell, C., Willink, G., Theodore, C., Jung, J., Glasner, B., "Wind Tunnel and Hover Performance Test Results for Multicopter UAS Vehicles," NASA/TM–2018–219758 Download
Schatzman, N., Romander, E., Komerath, N., "Modeling Shed Vorticity from Coaxial Blade Interactions," AIAA Aviation and Aeronautics Forum, Atlanta, GA, June 25-29, 2018 Download
Schatzman, N., "Aerodynamics and Aeroacoustic Sources of a Coaxial Rotor," NASA/TM–2018–219895 Download
Scully, M., "Adventures in Low Disk Loading VTOL Design," NASA/TP–2018–219981 Download
Silva, C., Johnson, W., Solis, E., "Concept Vehicles for VTOL Air Taxi Operations," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16-18, 2018 Download
Silva, C., Johnson, W., Antcliff, K.R., and Patterson, M.D., "VTOL Urban Air Mobility Concept Vehicles for Technology Development," 2018 Aviation Technology, Integration, and Operations Conference, AIAA Aviation Forum, AIAA 2018-3847, Dallas, TX, June 2018 DownloadTheodore, C., "A Summary of the NASA Design Environment for Novel Vertical Lift Vehicles (DELIVER) Project," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16-18, 2018 Download<
Ventura, P., Yoon, S., Theodore, C., "High-Fidelity Computational Aerodynamics of the Elytron 4S UAV," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16–18, 2018 Download
Young, L., "What is a Tiltrotor? A Fundamental Reexamination of the Tiltrotor Aircraft Design Space," AHS Technical Meeting on Aeromechanics Design for Vertical Lift, Holiday Inn at Fisherman's Wharf, San Francisco, CA, January 16-18, 2018 Download
Young, L., "Smart Precise Rotorcraft InTerconnected Emergency Services (SPRITES)," 2018 AIAA Guidance, Navigation, and Control Conference, AIAA SciTech Forum, 8-12 January 2018, Kissimmee, Florida Download