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The pilot effort involved in a helicopter ship landing is a function of the helicopter flying qualities, the ship airwake and associated turbulence, ship motion, ship visual landing aids, and shipboard obstructions. There are no visual landing aids (VLA) on USA surface combatant ships to aid the pilot in anticipating a ship flight deck quiescent period. The Landing Period Designator (LPD) was designed...
Stottler Henke has developed VERTICAL (VLA experimental resource for testing innovative configurations and lightings) for the US Navy. This test and design tool is being used to support vertical takeoff and landing/rotorcraft ship visual landing aids (VLA) test and design at the test team members' work area. This effort has been accomplished by utilizing MS Flight Simulator, FSUIPC, C++, and OpenFlight...
Industry partners to NASA will simulate the missions to the Moon, Mars, and beyond using integrated modeling and simulation tools and systems engineering methods that have been proven on NASA, DoD, and commercial programs. Integrated modeling and simulations are critical to the success of the VSE missions. In a recent NASA Capability Roadmaps Executive Summary, dated May 22, 2005, NASA defined an...
Enterprises that are tightly choreographed require ongoing knowledge of their member systems capabilities in order to adapt and maintain effective operations. Member system capabilities are derived from knowing the current performance levels of the member systems functionalities. The performance degradation curves for the member systems functionalities must be continually monitored. There are several...
Formation flying faces an increasing interest as a mission concept offering reliability and performances improvements. However, orbital control effort required to maintain the desired configuration can result too expensive, and therefore its evaluation becomes a critical point in judging the feasibility of a mission. A correct estimate depends on the closeness to the real environment of the dynamic...
Tornadoes represent the most dangerous and destructive of storms. A revolutionary concept for disrupting the formation of tornadoes in a thunderstorm is proposed for evaluation. Beamed microwave energy from a satellite could heat cold rainy downdrafts to alter convective forces in the storm cell. Such a satellite is termed a thunderstorm solar power satellite (TSPS). The TSPS is based on Space Solar...
This paper describes the investigation, analyses, and tests carried out to determine the source of an unknown "phantom" disturbance torque that was saturating the control moment gyroscopes, causing loss of attitude control of the International Space Station during Russian extravehicular activities. Exhaustive flight data analyses, analytic simulations for flight data reconstruction, and...
The Jet Propulsion Laboratory's Deep Impact (DI) Project was a smashing success with its successful Impact and Flyby Encounter on July 4, 2005 (UTC). Deep Impact launched the flight system, consisting of two spacecraft, on January 12, 2005 for an Encounter with comet Tempel 1 just 6 months later. The two spacecraft, known as the Flyby and the Impactor, were separated 24 hours prior to Encounter, whereby...
The main attempt of this paper is to present a new methodology to model a generic low-level flight close to terrain, which guarantees terrain collision avoidance. Benefiting the advantages of high-speed computer technology, this method uses satellite elevation maps to generate so called 'quad-tree forms'. The latter is then used to find the optimal trajectories for low-level flights. The novelty of...
The space power facility is located at NASA's Glenn Research Center Plum Brook Station in Sandusky, Ohio. It is the world's largest space simulation test facility with a test chamber that is 30.5m (100ft) in diameter by 37.2m (122ft) high. It has been used to test a variety of large space flight hardware and space systems for NASA, other government agencies, and the private sector over the last 20...
The President's vision for space exploration presents a need to determine the best architecture and set of vehicle elements in order to achieve a sustained human lunar exploration program. The Lunar Architecture Stochastic Simulator and Optimizer (LASSO), a new simulation-based capability based on discrete-event simulation, was created to address this question by probabilistically simulating lunar...
This paper discusses the application of evolutionary computing to a dynamic space vehicle power subsystem resource and performance simulation in a parallel processing environment. Our objective is to demonstrate the feasibility, application and advantage of using evolutionary computation techniques for the early design search and optimization of space systems. With this approach, engineers specify...
The paper describes an agent-based simulation developed to test the benefits of inserting airline dispatch technology as well as a collaborative rerouting concept for the National Airspace System (NAS). Agents are generally defined as entities with autonomy of action, which can engage in tasks in an environment without direct external (human) control. In a NAS simulation it is infeasible to assign...
Simulation based acquisition (SBA) enables robust, collaborative, and integrated use of modeling and simulation (M&S) technology across acquisition phases. Extending the concept of integrated process and product development (IPPD), SBA promises to reduce acquisition cost and risk while promoting higher product quality. SBA characteristics include a program-wide integrated data environment, a single...
As reported in 2005 Aerospace Conference, the FLUKA Monte Carlo code is being modified as part of NASA's Space Radiation Shielding Program for use in simulating the space radiation environment, in order to evaluate the properties of spacecraft and habitat shielding. Since the last workshop, several notable enhancements have been made to the FLUKA code itself and the ancillary support software. These...
In the past, flight and ground systems have been developed largely-independently, with the flight system taking the lead, and dominating the development process. Operability issues have been addressed poorly in planning, requirements, design, I&T, and system-contracting activities. In many cases, as documented in lessons-learned, this has resulted in significant avoidable increases in cost and...
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