In particular, this problem becomes more difficult when several objectives with preemptive priorities are expected for different purposes. Apr 10, 20 im working on a project for myself in regards to atmospheric reentry. The end product of trajectory analysis is often a map showing the forecast and probable uncertainty bounds of the slick movement. The coverage of the radar has been expanded to include all possible trajec. A simple analytical point mass reentry technique and a more comprehensive analysis method that considers vehicle dynamics and orbit insertion malfunctions are presented. Vehicle trajectory, attitude, and possible breakup enhancement devices will be integrated in the simulation as required to ensure an adequate representation of the reentry process. Where the movie mentions the solving of differential equations using eulers method, i will compare this method with more modern ones in an important problem of rocketry. Feature point tracking and trajectory analysis for video.
Reentry trajectory optimization for mission analysis. Reentry trajectory optimization for hypersonic vehicle. In order to solve such a problem, the equations of motion are derived. The reentry trajectory planning for hypersonic vehicles is critical and challenging in the presence of numerous nonlinear equations of motion and path constraints, as well as guaranteed. Similarly to the twobody example,figure 9 illustrates the maximum error on position. Boostglide trajectories are a class of spacecraft guidance and reentry trajectories that extend the range of suborbital spaceplanes and reentry vehicles by employing aerodynamic lift in the high upper atmosphere.
Engineering notes 505 rapid veri cation method for the trajectory optimization of reentry vehicles scott josselynand i. At least 95% of all state prisoners will be released from prison at some point. In this paper, a fuzzy satisfactory goal programming method is proposed to solve the multiobjective reentry trajectory optimization problem. Atmospheric entry trajectory illustrating the basic phases of flight in a skip reentry. The reentry trajectory optimization for hypersonic vehicle hv is a current problem of great interest. Pdf parametric controlvariable analysis in support of. Koumoutsakos institute of computational science, eth zu. Constrained reentry trajectory optimization for hypersonic vehicles is a challenging job. Moore mission analysis office summary in this report a more exacting analysis of the performance of the apollo acquisition and tracking radar has been made. Numerical simulations of the apollo 4 reentry trajectory a thesis submitted in ful llment of the requirements for the degree of master of mechanical engineering authors name. Maneuverable reentry vehicle trajectory footprints.
The nominal reentry trajectory design presented first subdivides the total reentry trajectory into several segments with partially constant controlstate parameters such as maximum heat flux and deceleration. Dynamics of atmospheric reentry aiaa education series. A comparative reentry performance analysis is performed among. As you can see from all these constraints, a reentry vehicle must walk a tightrope between being squashed and skipping out, between. I decided to derive the equations using the diagram shown in the attached picture. Marv maneuverable reentry vehicles pop probability of. Pdf on aug 16, 2004, erwin mooij and others published parametric controlvariable analysis in support of reentry trajectory optimisation find, read and cite all the research you need on. Computational fluiddynamics results are presented to show the flow field around a blunted coneflare in hypersonic flow.
Entry, descent, and landing operations analysis for the stardust reentry capsule prasun n. In most examples, boostglide roughly doubles the range over the purely ballistic trajectory. Pdf on june th, 2010, the hayabusa sample return capsule successfully. This guide provides an overview of the physical processes that affect oil movement and behavior in the marine environment. The present work aims to numerically rebuild certain signi cant trajectory points, containing the peak heating points of the apollo 4 terrestrial reentry. Describe the basic trajectory options and tradeoffs in reentry design. Reentry trajectory optimization for space shuttle using sinecosine algorithm. Reentry trajectory optimization for hypersonic vehicles using. Esa has internally run a number of analysis on a typical trajectory for a marcopolo like mission.
The following is a brief summary of the analysis results. Interior point algorithm for the optimization of a space shuttle reentry trajectory. Reentry trajectory optimization based on timedomain improved. Subsequent to the conclusion of the analysis reported in this paper, a more refine. Trajectory analysis and observation mission design. Skip entry trajectory planning and guidance christopher william brunner iowa state university follow this and additional works at. Apply the motion analysis process map checklist to reentry.
The main results on analysis of reentry trajectory optimization by using multistage pseudospectral method are presented to validate the feasibility. In this paper, an improved chicken swarm optimization icso method is proposed considering that the. The following functions may be performed by the program. Entry, descent, and landing operations analysis for.
Survivability of emergency escape from a simulated space shuttle entry trajectory elisa gail shapiro master of science 2005 directed by. Crawford space guidance analysis group massachusetts institute of technology instrumentation laboratory the problem of designing a system of steer ing logic for the reentrv phase of the apollo mission is discussed in detail. Laboratory were analyzed after the planned trajectory correction maneuvers to. The attackangle optimization is a key problem for reentry trajectory design of a gliding type reusable launch vehicle rlv. Space debris reentry analysis methods and tools sciencedirect. A fortran iv program package has been written for the generation, analysis, and estimation of reentry trajectories. Earth reentry tool for preliminary mission analysis mihai victor pricop,1,2, marius gabriel cojocaru2, mihai leonida 2niculescu, mircea boscoianu1 corresponding author,1university transilvania of brasov, bdul eroilor 29, 500036 brasov, romania pricop. The full trajectory is determined in the form of optimal trajectory sequences.
The approach uses timedomain basis functions fitting the control variables, solves free final time optimal control directly, and sets parameters by using vehicles dynamic characteristics. The optimal conditions for a given segment can then be selected. In all cases, designers adjust the trajectory and vehicle shape to match the accuracy requirement. Lyons, jeff tooley, julie kangas jet propulsion laboratory, pasadena, ca 911098099 on the morning of january 15, 2006, the stardust capsule successfully landed at the utah. Research article reentry trajectory optimization based on a multistage pseudospectral method jiangzhao, 1 ruizhou, 1 andxuelianjin 2 school of automation science and electrical engineering, beihang university, beijing, china. Rapid verification method for the trajectory optimization of. Spartan shefex3 pseudospectral algorithm for reentry trajectory anal. Desai nasa langley research center, hampton, va, 236812199 and dan t. Reentry trajectory optimization based on a multistage. Trajectory prediction principle according to the gst, thanks to the uncertainty of the measurement data, the measurement data can be considered within a certain range of grey. Improved chicken swarm optimization method for reentry. Aerothermal analysis of a samplereturn reentry capsule 473 figure 7. Reentry trajectory optimization under atmospheric uncertainty.
Mechanical and aerothermal loads variation along reentry trajectory increases in the range of altitudes between 120 km and 63. Besides, it is a highdimensional optimization problem. Feature point tracking and trajectory analysis for video imaging in cell biology i. This study develops a framework for an elite network analysis using a concept called weapons sponsorship i.
Reference trajectory analysis and trajectory control by bank angle for reentry vehicle ksme international journal, vol. Part of theaerospace engineering commons this dissertation is brought to you for free and open access by the iowa state university capstones, theses and dissertations at iowa state. Reentry trajectory optimization has been researched as a popular topic because of its wide applications in both military and civilian use. Technical challenges and study on guided reentry flight for. In the analysis for the reference reentry trajectory whose fpa is 1. Interior point algorithm for the optimization of a space. The trajectory prediction of spacecraft by grey method. Entry, descent, and landing operations analysis for the. Reentry trajectory optimization with waypoint and nofly. It is a challenging problem owing to its strong nonlinearity in motion equations and constraints.
The lyapunov analysis proves the asymptotic convergence of system states. Reentry trajectory optimization with waypoint and nofly zone constraints using multiphase convex programming author links open overlay panel dangjun zhao a zhengyu song b c show more. An overview of the entry, descent, and landing edl trajectory analysis that was. The problem of reentry trajectory for space vehicle subjected to the aerodynamic forces has. A new timedomain improved pso algorithm is proposed to solve the problem of reentry trajectory optimization. This requires the coupling of the resolved ow eld with radiative and ablative e ects in. Development of a novel algorithm for high performance reentry. Ive come across some equations that describe the reentry trajectory. Uncertainty dispersion analysis and optimal control of. Reducedorder entry trajectory planning for acceleration.
Reentry trajectory optimization under atmospheric uncertainty as a differential game. Some complex constraints, such as waypoints for reconnaissance and nofly zones for threat avoidance, are inevitably involved in a global strike mission. Generally, two categories of numerical methods are used to solve the problem of reentry trajectory optimization. Julien laurentvarin, cnesinriaonera common work with j.
May 23, 2012 a reentry trajectory planning approach satisfying waypoint and nofly zone constraints optimal guidance for reentry vehicles based on indirect legendre pseudospectral method acta astronautica, vol. The essence of the trajectory prediction is to predict the coordinates of a moving object. Akin, aerosospace engineering space systems laboratory university of maryland as a component of the nasa svti on reusable launch vehicles. A methodology for the optimization of the reentry trajectory useful in the mission analysis phase was described. Abstractthe main thrust of the paper is the evaluation of the aero thermodynamic analysis of reentry trajectory. Proposal for the replacement of the minutemaniii icbms. Research article reentry trajectory optimization based on a.
Although there was great uncertainty regarding whether or not the src. Pdf reentry trajectory optimization for space shuttle. Penelope leyland nikhil banerji elise fay lausanne, suisse, march 20. Ballistic and lifting atmospheric entry enae 791 launch and entry vehicle design u n i v e r s i t y o f maryland parametric deceleration 2 dv dt. Earth reentry tool for preliminary mission analysis. In the preliminary analysis, we could qualitatively know that the flow field around the reen try sphere is continuum and laminar, and the stagna tion heat flux is at an order of 100 kwm 2 above 50 km. Pdf aerothermal analysis of a samplereturn reentry capsule. Measurement uncertainty and feasibility study of a flush.
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