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AEROSPACE ENGINEERING PROJECTS...
Rotorcraft projects.
Rotorcraft
Fixed-wing aircraft projects.
Fixed-Wing
The Fast Panel Analysis (FPA) code has been extended to general unsteady flow problems with a derivative Fast Panel Vortex or FPV code.
Fast Panel/Vortex
The VorTran-M wake module is a first-principles Eulerian vorticity transport wake module that provides an unprecedented ability to capture the true temporal and spatial structure of the rotor wake when coupled to a wide range of CFD (both Eulerian and Lagrangian) tools.
VorTran-M
A critical operational problem for Army rotorcraft is 'brownout' caused by excessive dust and debris kicked up by helicopter rotorwash during take-off and landing. Fast, physics-based models for design and simulation applications are under development at CDI.
Brownout
MAST is a physics-based analysis enabling high-fidelity, real-time flight simulation of multiple aircraft and their wakes.
Multi-Aircraft
A novel approach for providing one-per-rev vibration reduction using collections of discrete active tab devices has recently been completed under an Army-sponsored Phase II SBIR program.
Tracking Tabs
A cross-platform design toolkit with open 3D graphics standards VRML/X3D for supporting Visual Landing Aid (VLA) design and evaluation activity has been developed for the Navy.
Visual Landing Aid
Advanced mathematical models are required to support vehicle design and to prepare for flight test for aircraft designs that introduce significant aeroelastic and aeroservoelastic (ASE) couplings.
UAV Aeroelasticity
CDI software products EHPIC-HERO and CHARM can be used for wind turbine analysis and design as well as rotorcraft analysis and design. CHARM and MAST software can be used to predict wake interactions and aerodynamics of multiple wind turbines under varying wind conditions.
Wind Turbine
MATERIALS ENGINEERING PROJECTS...
Recent NASA-sponsored work at CDI included an effort to improve upon the fixed VG by making it deployable on demand and thereby eliminating any penalty when the generators are not needed
Pop Up VG
Because of the high temperatures associated with aeropropulsion applications, identification and application of high temperature SMA alloys becomes highly desirable. In spite of the developmental nature of HTSMA materials, several promising laboratory demonstrations of devices incorporating Pt-doped NiTi have taken place in recent work at CDI.
Hi-Temp SMA
Recent work at CDI has seen development of a novel method of UV curing composite structures that can extend UV curing techniques to any size, thickness, or shape composite and with any type of reinforcing fiber by uniformly distributing UV light throughout a composite structure.
UV Curing
Rotor blades and other aircraft and missile components are subject to erosion from impacts with particulates (e.g., sand) as well as raindrops. Recent work for the U.S. Air Force led to development of the SUpersonic Rain Erosion (SURE) facility by CDI, a facility that features drop speeds up to 1200 fps and tight control of drop size.
Rain Erosion

MOLECULAR MODELING PROJECTS...
The Fast Poisson-Boltzmann (FPB) solver utilizes fast multipole methods to, in practice, produces order of magnitude reductions in storage and CPU costs for realistic molecules.
Fast P-B Solver




ENVIRONMENTAL ANALYSIS PROJECTS...
Recent work at CDI entailed the development of a model for predicting the deposition of chemicals jettisoned into the atmosphere from an airborne laser aircraft.
CJSIM
The FJSIM fuel jettisoning simulation model provides a key tool for evaluating the health and environmental impact of fuel jettisoning events from fixed and rotary wing aircraft.
FJSIM
The aerial application models AGDISP and AgDRIFT ¨C tools that provide for accurate prediction of spray material released from aircraft ¨C have been developed and are distributed by CDI.
AGDISP
The LDTRAN (Lagrangian Deposition and TRANsport) model is an analysis that merges major elements of CDI's CHARM flow field and droplet trajectory analyses to support assessment of chemical and biological threats to Army rotorcraft.
LDTRAN

NAVAL/HYDODYNAMICS PROJECTS...
Ducted propulsors have been assuming a growing role in naval combatants, and the concept of a steerable ducted propulsor is an attractive prospect. Work at CDI on rapidly maturing Shape Memory Alloy (SMA) actuation devices for underwater use has opened the way for a deformable 'Smart Duct'.
Smart Duct
Recent work at CDI saw the development and testing of a novel method for mitigating adverse vortex wake effects using control surfaces actuated via Shape Memory Alloy (SMA) smart materials technology.
Submarine Wakes
Recent work at CDI has invovled analysis and design of advanced marine propulsion components, including an ONR-sponsored effort on a Bio-inspired Delayed Stall Propulsor (BDSP) system.
Marine Propulsor