Daniel Schrage

Georgia Institute of Technology | GT · School of Aerospace Engineering

An evolving set of modern conceptual design methods seek to explore the feasibility of a new generation of systems, with new capabilities, to accomplish missions that conventional vehicles cannot be empirically redesigned to perform. These methods attempt to provide a more complete understanding of a concept’s design space, and can accurately forec...

One of the most critical challenges to full integration of unmanned aircraft systems (UAS) into the National Airspace System (NAS) is the requirement to comply with CFR 14 Part 91.113 to "see and avoid" other aircraft. Various attempts have been made to develop systems to "sense and avoid" other aircraft so UAS can comply with the intent of the reg...

There is a need for a program designed to more tightly integrate manufacturing, producibility, life cycle costs, and large scale system integration concerns from the beginning of the aerospace design process. This paper presents the results of an analysis performed in support of the development of a Collaborative Aerospace Lifecycle Systems Enginee...

Unmanned Aircraft System (UAS) integration into the National Airspace System (NAS) is an important goal of many members of the Aerospace community including stakeholders such as the military, law enforcement and potential civil users of UAS. However, integration efforts have remained relatively limited due to safety concerns. Due to the nature of U...

The method outlined in this paper facilitates considerations and decisions about rotorcraft maneu-verability and agility during the conceptual design phase. Design tools for analyzing maneuverability at an early stage are generated and utilized through Design of Experiments and Response Surface Methods. Through these techniques and elements of prob...

Science. Over the past 15 years, Dr. Schaefer has conducted research on product modeling, variant design, product lifecycle management, design-with-manufacture integration, standardized product data exchange, as well as digital and virtual engineering. His current research focus concerns the highly topical area of Cloud-based Design and Manufacturi...

Globalization, technology, and risk sharing business partnerships have changed the landscape of large scale systems integration. In today's business environment, the traditional style of knowledge transfer presuppositions and foundations are inadequate for dissemination of process knowledge in a global multi-cultural environment. The following pape...

Modern needs for rotorcraft are becoming increasingly stringent, with customers demanding rotorcraft that can fly faster, carry more cargo, have larger ranges, and to do it all more economically than in the past, such as the Joint Multi-Role, Joint-Heavy Lift, DARPA VTOL X-Plane, and the NASA Large Civil Tiltrotor. These advanced mission requiremen...

The accelerator development group in ANL’s Physics Division has engaged in substantial R&D related to CW proton and ion accelerators. Particularly, a 4 meter long 60.625 MHz CW RFQ has been developed, built and is being commissioned with beam. Development and fabrication of a cryomodule with seven 72.75 MHz quarter-wave cavities is complete and it...

The Defense Advanced Research Projects Agency (DARPA) is sponsoring the MENTOR program as the outreach part of its Adaptive Vehicle Make suite of programs. Georgia Tech has been awarded a contract to involve up to 1000 high schools after 4 years in a series of prize challenges. A web-based collaborative design-manufacturing infrastructure will be d...

A rotorcraft drive system is a complex and tightly coupled system. The integration of such a system requires an understanding of the multi-disciplinary interactions that occur during design. The function of the drive system is to transfer engine power, with speed reductions to the lifting rotor, anti-torque device, and other accessory systems, whil...

An integrated design and manufacturing approach allows economic decisions to be made that reflect an entire system design as a whole. Production cost estimates are typically applied for evaluation of process trades at the system level. To add more clarity to the design and manufacturing trades, the prediction of the effort needed to produce the pro...

Product Lifecycle Engineering (PLE) is the application of Systems Design and Analysis (SDA) to the Systems Engineering (SE) activities during the various phases along a system/product lifecycle. SE is an interdisciplinary approach and means for enabling the realization and deployment of successful systems. Systems engineers deal with whole systems...

Composite skid landing gear performance was evaluated for IM7/8552 and AS4/8552 crossmember beam designs. Limit drop test as per Federal Aviation Regulation (FAR) Part 27 was simulated by dynamic finite element analysis from a drop height of 508 mm (20 inches), using ABAQUS™. Tsai-Wu, and LaRC04 failure criteria were used to predict failure and fra...

Composite skid landing gear design feasibility results are presented. Limit drop test as per Federal Aviation Regulation (FAR) Part 27 has been simulated by finite element analysis using ABAQUS (TM) for multiple landing scenarios from a drop height of 508 mm (20 inches). Load factor, ply stresses, and ply strains are evaluation metrics. Study of se...

A reaction-drive rotor configuration including an ejector nozzle is studied to determine possible exhaust-jet velocity reduction for the purpose of noise suppression. A vortex-wake rotor model is compared with an experimental rotor test, determining the model validity for a hovering rotor. A two-dimensional computational fluid dynamic model of an e...

A proposal for an alternative methodology to solve optimal maintenance problems is presented in this paper. Monte Carlo simulation and Response Surface Equations constitute the core of the methodology to enable the rapid processing of optimization without oversimplifying either the input probability distributions or system structure. A numerical st...

A dynamically deployed Gurney flap was examined as a vibration reduction mechanism. A Navier-Stokes/Free wake hybrid method was used for a physics-based investigation of the Gurney flap effect. A previously trimmed prescribed motion was used for a quick examination of this concept. The 4-per-revolution normal force at the hub was compared with the...

Unmanned Aerial Vehicles (UAVs) that operate in civil airspace and fly autonomously must have regard for the safety of other vehicles in space the UAV must be equipped with technology for obstacle detection and avoidance. One of the problems with UAVs is the detection and avoidance of clouds and other visual obstructions. In this paper, we propose...

Geo-registration is the technique of mapping the pixel co-ordinates from images to geo-coordinates. Generally, this is achieved by adjusting and aligning the input images with a standard reference image. Geo-registration helps aerial systems in target detection, target tracking as well as exploration. For aerial systems, the information from the ca...

The Advanced Exotic Beam Laboratory (AEBL) at the Argonne National Laboratory (ANL) will provide a research facility for studies of nuclear phenomena by using beams of short-lived isotopes for research on the nature of nucleonic matter and the origin of the elements, for tests of the Standard Model, for applications in medicine and industry, and fo...

An experiment has been conducted to measure differences in cavity Q caused by various cavity surface treatments. A requirement of the experiment was that it show little sensitivity to the reassembly of the apparatus with various test pieces. We chose a coaxial half-wave resonator, with an outer conductor extending significantly beyond the length of...

The Advanced Exotic Beam Laboratory (AEBL) at the Argonne National Laboratory (ANL) will provide a research facility for studies of nuclear phenomena by using beams of short-lived isotopes for research in the nature of nucleonic matter, the origin of the elements, tests of the Standard Model along with applications in medicine, industry, and other...

An unmanned aerial vehicle (UAV) for a methane detection mission on Mars has been conceptually designed for a science mission in support of the search for life on Mars. Methane being one of the indicators of life, it seeks to identify areas of high methane concentration as well as to create a high resolution map of the methane concentration over as...

Employers have experimented with three broad approaches to promoting diversity. Some programs are designed to establish organizational responsibility for diversity, others to moderate managerial bias through training and feedback, and still others to reduce the social isolation of women and minority workers. These approaches find support in academi...

Multilevel optimization methodology is implied on Elastic Articulation (EA) rotor system to find the global and local configuration to ensure the dynamic stability with Autorotation Index (AI) consideration. EA rotor is the rotor system of generic Georgia Tech Helicopter (GTH) and it is soft-in-plane with 10% effective flapping hinge offset and for...

On August 25, 2004, a series of flight experiments and demonstrations were flown at the McKenna urban operations complex at Ft. Benning, GA. These experiments represented the culmination of the rotary wing segment of the DARPA Software Enabled Control program. To support these efforts, an open system Unmanned Aerial Vehicle testbed architecture was...

This paper presents a control architecture designed to accommodate a selection of modern control algorithms on a full-scale rotary-wing, unmanned aerial vehicle. The architecture integrates a visual landing system, two path planners, a flight envelope protection algorithm, and two low-level flight controllers that were developed independently by si...

A key technology issue of energy recovery linac (ERL) devices for high-power free-electron laser (FEL) and fourth generation light sources is the demonstration of reliable, high-brightness, high-power injector operation. Three ongoing programs that target up to 0.5 Ampere photocathode injector performance with required ERL brightness, are described...

An RF photoinjector capable of producing high average current with low emittance and energy spread is a key enabling technology for high power CW FEL. The design of a 2.5-cell, -mode, 700-MHz normal-conducting RF photoinjector cavity with magnetic emittance compensation is completed. With average gradients of 7, 7, and 5 MV/m in its three accelerat...

IntroductionCurrent Practice in Control System ConfigurationsOpen-Control Platform DesignA Prototype Open Control PlatformOngoing Work and Open IssuesReferences

IntroductionReal-Time Adaptation of Mode Transition ControllersHover to Forward Flight ExampleLimit Detection and Limit AvoidanceAdaptive Limit DetectionAutomatic Limit Avoidance for UAVsPerformance Assessment and Implementation IssuesConclusion References

On August 25, 2004, a series of final experiments were flown at the McKenna urban operations complex at Ft. Benning, GA. These experiments represented the culmination of the rotary wing segment of the DARPA Software Enabled Control program. To support these efforts, an open system Unmanned Aerial Vehicle testbed architecture was developed for the G...

High-average-power FELs require high-current, low-emittance and low-energy-spread electron beams. These qualities have been achieved with RF photoinjectors operating at low-duty factors. To date, a high-average-current RF photoinjector operating continuously at 100% duty factor is yet to be demonstrated. The principal challenges of a high-duty-fact...

A method is demonstrated that utilizes covariate theory to generate a multi-response component failure distribution as a function of pertinent operational parameters. Where traditional covariate theory uses actual measured life data, a modified approach is used herein to utilize life values generated by computer simulation models. The result is a s...

An RF photoinjector capable of producing high continuous average current with low emittance and energy spread is a key enabling technology for high power CW FEL. The design of a 2.5-cell, {pi}-mode, 700-MHz normal-conducting RF photoinjector cavity with magnetic emittance compensation is completed. With the electric field gradients of 7.7, and 5 MV...

As unmanned autonomous aerial vehicles prove themselves as vital components of future military and civilian systems, the performance envelope of such aircraft is expanding rapidly. With the plot out of the cockpit the vehicle is no longer limited by the physiological constraints of the human body. Extreme performance at or near the ßight envelopes...

This project is a coordinated effort among NAVSEA, LANL and AES, to develop a key enabling technology for high-power FEL called for by the High Energy Laser Joint Technology Office: a high current RF photoinjector capable of producing continuous average current greater than 100 mA. The specific aim is a π-mode, normal-conducting RF photoinjector, 5...

Magnesium diboride (MgB2) is attractive for RF cavity application for particle accelerators because it might not show an increase of RF surface losses at high magnetic surface fields, a phenomenon that has prevented high-Tc superconducting materials such as YBCO from being used for this application. We have measured the RF surface resistance (Rs) a...

The use of flight simulation tools to reduce the schedule, risk, and required amount of flight-testing for complex aerospace systems is a well-recognized benefit of these approaches. However, some special challenges arise when one attempts to obtain these benefits for the development and operation of a research Uninhabited Aerial Vehicle (UAV) syst...

AIAA/ICAS International Symposium: The Next 100 Years, Dayton, OH, July 14-17, 2003. The goal of a future transportation architecture is an expansion in mobility, enabling new types of travel and commerce currently not affordable and thus producing induced societal benefit. From the design perspective, the complexity, high dimensionality and divers...

This paper describes the design, development, and operation of a research Unmanned Aerial Vehicle (UAV) system that has been developed at the Georgia Institute of Technology, called the GTMax. This description will include the processes put in place to enable the system to be used for UAV-technology research, including effective flight testing. Res...

Two β = 0.175, 350 MHz, 2-gap superconducting (SC) spoke cavities were fabricated in industry under the Advanced Accelerator Applications (AAA) project for the transmutation of nuclear waste. These cavities are promising candidates for the accelerating structures between a RFQ and the elliptical SC cavities for proton and heavy ion linacs. Since th...

The project is under way to develop a key enabling technology for high-power CW FEL: an RF photoinjector capable of producing continuous average current greater than 100 mA. The specific aim is a π-mode, normal-conducting RP photoinjector, 3 nC of bunch charge, 100 mA of current (at 33.3-MHz bunch repetition rate) and emittance less than 10 mm-mrad...

A key technology issue on the path to high-power FEL operation is the demonstration of reliable, high-brightness, high-power injector operation. We describe two ongoing programs to produce 100 mA injectors as drivers for 100 kW free-electron lasers. In one approach, in collaboration with the Thomas Jefferson National Accelerator Facility, we are fa...

Los Alamos completed design, fabrication, procurement, and initial testing (without beam) of the SNS medium-energy beam-transport (MEBT) chopper, including the meander-line traveling-wave structure and the electrical-pulser system. This report reviews the design parameters and discusses the fabrication process for the chopper structures, including...

Presented at the 9th AIAA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, Atlanta, GA, September 4-6, 2002. On-going research is described in this paper concerning the development of a methodology for adaptable system studies of future transportation solutions based upon personal air vehicles. Two challenges in this research are pre...

This methodology is developed during an investigation into the airspace management requirements for integrating manned and unmanned aircraft operations in a close airspace environment. One of the by-products of this research was an Airspace Simulation Program (ASP). This spreadsheet-based program attempts to model the flight paths of multiple aircr...

To grasp effects of such ground effect parameters as rotor height, ground inclination angle, and location of the rotor hub center from the edge of ground plane, on blade flapping motion of a rotor hovering above finite inclined ground plane, a hovering test of the rotor was conducted using a finite ground effect plate and a model rotor. The thrust,...

Q disease, i.e., an increase of RF surface resistance due to hydride precipitation, has been investigated with 350-MHz spoke cavities. This phenomenon was studied extensively in the early 1990s with cavities at frequencies >1 GHz. This is possibly due to the fact that the lower-frequency cavities were believed to show insignificant effect. However,...

Presented at AIAA Aircraft Technology, Integration, and Operation (ATIO) Technical Forum, October 1-3, 2002, Los Angeles, CA. A product?s design requirements guide the next development efforts. Thus, correct decision-making is critical in generating design requirements as vehicle concepts are being formulated. A new method is proposed to account fo...

This research provides a probabilistic design environment for the propagation of design uncertainty to the system level to assist in making more educated decisions in the early stages of design. This design uncertainty is associated with the key elements that are addressed in system design and which are captured in the appropriate design environmen...

The objective of this project is to develop innovative software-enabled control (SEC) methods and Open Control Platform (OCP) support for complex dynamic systems with an application focus on intelligent Uninhabited Aerial Vehicles (UAVs). The VTOL UAVs, being used as testbeds, are capable of extreme performance under complex and changing mission sc...

A multilevel decomposition approach for the preliminary design of a High Speed Civil Transport Aircraft wing structure is described. The wing design is decomposed into three levels. The top level uses the FLOPS aircraft synthesis program to generate preliminary weights, mission, and performance information. The optimization criterion is productivit...

The aerospace industry is currently addressing the problem of integrating manufacturing and design. To address the difficulties associated with using many conventional procedural techniques and algorithms, one feasible way to integrate the two concepts is with the development of an appropriate Knowledge-Based System (KBS). The authors present their...

Beyond the Bell/Boeing 609, the next step in civil tiltrotor evolution will most likely be a larger capacity vehicle (~ 40 passenger class) similar to NASA's vision of a Short Haul Civil Tiltrotor (SHCT). This vehicle will be designed, built and operated in an era being shaped by today's increased emphasis on affordability. This paper discusses the...

Traditional dynamic analyses do not allow for systematic and routine development of governing equations independent of the physical topology and constraints. Thus, an automated approach to developing such equations is not possible for a sufficiently large class of problems. Most simulation and modeling applications are based on the classical dynami...

Two 350-MHz β = 0.175 two-gap superconducting (SC) spoke resonator cavities have been fabricated in industry under an R&D project for the Advanced Accelerator Applications (AAA) program at LANL. This paper describes the structure, presents the test results of mechanical properties, tuning sensitivity at room temperature, and Q – E curves at 4 K. A...

In this paper we discuss the feasibility of using finger- like structures added to a superconducting spoke resonator cavity to superimpose a modest amount of electric quadrupole focusing onto the high axial accelerating field. The motivation for this idea is to eliminate the need for magnetic focusing elements such as solenoids between spoke caviti...

American Helicopter Society 58th Annual Forum, Montreal, Canada, June 11-13, 2002. This research provides a probabilistic design environment for the propagation of design uncertainty to the system level to assist in making more educated decisions in the early stages of design. This design uncertainty is associated with the key elements that are add...

Traditional dynamic analyses do not allow for systematic and routine development of governing equations independent of the physical topology and constraints. Thus, an automated approach to developing such equations is not possible for a sufficiently large class of problems. Most simulation and modeling applications are based on the classical dynami...

Advances in software technology have the potential to revolutionize control system design. Component-based architectures encourage flexible "plug-and-play" extensibility and evolution of systems. Distributed object computing allows interoperation. Advances are being made to enable dynamic reconfiguration and evolution of systems while they are stil...

The fast traveling-wave 2.5 MeV beam chopper for the Spallation Neutron Source (SNS) project has a new current structure based on the meander-folded notched stripline with separators. Measurements of the full-length structure prototype showed a good agreement with predictions of MAFIA electromagnetic modeling. The design of the final chopper units...

For the new baseline APT (Accelerator Production of Tritium) linac design, the power couplers are required to transmit 420 kW of CW RF power to the superconducting cavities at 700 MHz. These couplers consist of an airside waveguide-to-coax transition, an air/vacuum break made by two planar, coaxial windows, and a vacuum-side coaxial antenna section...

A three-dimensional ANSYS RF, Thermal, and Structural analysis has been performed for representative LEDA CCDTL RF structures. Geometry was taken from a Parasolid model that was generated by Los Alamos National Laboratory and represented one cavity structure. SUPERFISH results of this cavity were also provided. The ANSYS RF results were compared to...

Within the framework of the Advanced Accelerator Applications (AAA) project we are interested in building and testing low-P spoke resonators (cavities). To familiarize us with the specifics of these structures Argonne National Laboratory (ANL) kindly loaned us one of their spoke cavities for evaluation. This is a β=0.291 2-gap resonator at 340 MHz....

In this paper, we present the electromagnetic and structural design of a low-β superconducting spoke resonator for a beam-test in the Low Energy Demonstration Accelerator (LEDA). This test is part of the Advanced Accelerator Applications (AAA) project. Recently, the use of superconducting resonators for energies greater than 6.7 MeV has been approv...

We have manufactured a total of six β=0.64, 700-MHz 5-cell cavities. The APT (Accelerator Production of Tritium) specification requires Q₀>5×10⁹ at an accelerating field of 5 MV/m. So far, the results of vertical tests have shown maximum accelerating fields of 12 MV/m (peak surface field of 41 MV/m) and maximum low-field Q0 of...

The Spallation Neutron Source project includes a superconducting linac section in the energy range from 186 MeV to 1000 MeV. For this energy range two types of cavities are needed with geometrical β values of β=0.61 and β=0.81. An aggressive cavity prototyping program is being pursued at Jefferson Lab, which calls for fabricating and testing four β...

The current design of the Accelerator Driven Test Facility (ADTF) accelerator contains multiple β, superconducting, resonant cavities. Spoke-type resonators (β = 0.175 and β = 0.34) are proposed for the low energy linac immediately following the radio frequency quadrupole. A continuous wave power requirement of 8.5 – 211.8 kW, 350 MHz has been esta...

Six 5-cell superconducting elliptical cavities have been fabricated at LANL and in industry and tested at LANL and TJNAF. The APT (Accelerator Production of Tritium) specification requires Q o > 5 x 10 9 at an accelerating field of 5 MV/m. So far, the results of vertical tests have shown maximum accelerating fields of 12 MV/m (peak surface field of...

In this paper, we present the electromagnetic and structural design of a low-b superconducting spoke resonator for a beam-test in the Low Energy Demonstration Accelerator (LEDA). This test is part of the Advanced Accelerator Applications (AAA) project. Recently, the use of superconducting resonators for energies greater than 6.7 MeV has been approv...

This paper outlines an approach for the determination of economically viable robust design solutions using the High Speed Civil Transport (HSCT) as a case study. Furthermore, the paper states the advantages of a probability based aircraft design over the traditional point design approach. It also proposes a new methodology called Robust Design Simu...

* + # - This is white Integrated Product and Process Development (IPPD) embodies the simultaneous application of both system and quality engineering methods throughout iterative design processes. The use of IPPD results in the timeconscious, cost-saving development of engineering systems. A computing infrastructure called IMAGE is designed to imple...

* + ++ - -Fake footnotes to get them to show up on this page - this is white Integrated Product and Process Development (IPPD) embodies the simultaneous application of both system and quality engineering methods throughout an iterative design process. The use of IPPD results in the time-conscious, cost-saving development of engineering systems. Geo...

Progress in establishing an analysis package and design/optimization framework for preliminary design of a civil tiltrotor aircraft is reported. Updates to the sizing/performance program VASCOMP and Equivalent LAminated Plate Solution ELAPS are described. Correlation of this updated ELAPS (now including shear panels) and a state-space unsteady aero...

An integrated design and manufacturing approach allows economic decisions to be made that reflect the entire system design as a whole. In order to achieve this objective, integrated cost and engineering models were developed and utilized within a focused design perspective. A framework for the integrated product and process design of an aircraft sy...

The desire of achieving faster cruise speed for rotorcraft vehicles has been around since the inception of the helicopter. Many unconventional concepts have been considered and researched such as the advanced tilt rotor with canards, the tiltwing, the folding tiltrotor, the coaxial propfan/folding tiltrotor, the variable diameter tiltrotor, and the...

The Peters/He Finite State Wake Model is described in its application to fixed wing aerolasticity. Expressions for coupling this model with a wing, aerodynamically represented by a flat plate with a trailing edge flap, are developed, and fidelity issues are discussed. An application is presented where the wing/wake system is coupled to a proprotor...

This paper presents an exploratory study for identification and quantification of the economic benefits or implications associated with wing cost variations. A hierarchical cost model structure is used to determine life cycle effects of design and manufacturing alternatives for the major structural components of the wing of a High Speed Civil Trans...

An automated procedure for tiltrotor performance sensitivity calculation based on a V/STOL aircraft performance and sizing code, VASCOMP, is presented. The technique utilizes internal UNIX utilities and shell scripts, and will provide the option of changing the analysis code. Hence, VASCOMP is a testbed for future application of this approach on di...

Design-oriented analysis has become increasingly important as more and more problems traditionally solved in isolation are being approached from a multidisciplinary point of view. One such problem is the aeroelastic optimization of supersonic transport wings. Whereas simplified analytical techniques may not be sophisticated enough, and complex nume...

The paper describes one way to approach the multidisciplinary task of optimizing a tiltrotor wing structure which is equipped with an active flutter suppression system. Objective function is a productivity index, as a measure for aircraft cost-effectiveness. Short digress is held on the characteristics of the tiltrotor's dynamic system and its aero...

The aerospace industry is currently addressing the problem of integrating design and manufacturing. Because of the difficulties associated with using conventional, procedural techniques and algorithms, it is the authors' belief that the only feasible way to integrate the two concepts is with the development of an appropriate Knowledge-Based System...

Design for robustness and its subset design for economic robustness and viability are two areas in current design methodology and optimization research attracting a lot of attention, as the increasing number of publications and industry position papers in this field indicate. In fact, these publications attempt to address the paradigm shift taking...

Presented at the 2nd World Aviation Congress and Exposition, Anaheim, CA, October 13-16, 1997. The objective of this paper is to illustrate the methods and tools developed to size and synthesize a stopped rotor/wing vehicle using a reaction drive system, including how this design capability is incorporated into a sizing and synthesis tool, VASCOMP...

Presented at the 5th AIAA/NASA/USAF/ISSMO Symposium on Multidisciplinary Analysis and Optimization, Panama City, FL, September 7-9, 1994. The extent of knowledge required to perform the task of integrating manufacturing with aircraft design is beyond the expertise of a single engineer. This defines the need for a decision support system, or Knowled...

Presented at the 5th AIAA/NASA/USAF/ISSMO Symposium on Multidisciplinary Analysis and Optimization, Panama City, FL, September 7-9, 1994. Over the years, the U. S. rotorcraft industry and NASA have conducted numerous studies to determine possible candidates for a potential High Speed Rotorcraft Concept (HSRC) and to identify and provide suggestions...

Presented at the International Conference on Computational Engineering Science: Supercomputing in Multidisciplinary Analysis and Design, Mauna Lani, HI, July 30 - August3, 1995. The knowledge required to integrate aircraft manufacturing characteristics and constraints into the structural design process is beyond the proficiency of a single engineer...

Presented at the 1st AIAA Aircraft Engineering, Technology, and Operations Congress, Anaheim, CA, September 19-21, 1995. The possibility of a new aircraft that is capable of solving the increasing demand of inter-city transportation has attracted the attention of the aerospace industry for quite some time. Under the High Speed Rotorcraft Concept (H...

Complex control systems for autonomous vehicles require integrating new control algorithms with a variety of different component technologies and resources. These components are often supported on different types of hardware platforms and operating systems and often must interact in a distributed environment (e.g., in communication with a groundsta...