Download or read book Interplanetary Program to Optimize Simulated Trajectories IPOST Volume 1 User s Guide written by and published by . This book was released on 1992 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interplanetary Program to Optimize Simulated Trajectories IPOST Volume 4 Sample Cases written by and published by . This book was released on 1992 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interplanetary Program to Optimize Simulated Trajectories IPOST Volume 3 Programmer s Manual written by and published by . This book was released on 1992 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interplanetary Program to Optimize Simulated Trajectories IPOST Volume 2 Analytic Manual written by and published by . This book was released on 1992 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimizing Interplanetary Trajectories with Deep Space Maneuvers written by John Navagh and published by . This book was released on 1993 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interplanetary Program to Optimize Simulated Trajectories Ipost Volume 1 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-25 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: IPOST is intended to support many analysis phases, from early interplanetary feasibility studies through spacecraft development and operations. The IPOST output provides information for sizing and understanding mission impacts related to propulsion, guidance, communications, sensor/actuators, payload, and other dynamic and geometric environments. IPOST models three degree of freedom trajectory events, such as launch/ascent, orbital coast, propulsive maneuvering (impulsive and finite burn), gravity assist, and atmospheric entry. Trajectory propagation is performed using a choice of Cowell, Encke, Multiconic, Onestep, or Conic methods. The user identifies a desired sequence fo trajectory events, and selects which parameters are independent (controls) and dependent (targets), as well as other constraints and the coat function. Targeting and optimization is performed using the Stanford NPSOL algorithm. IPOST structure allows sub-problems within a master optimization problem to aid in the general constrained parameter optimization solution. An alternate optimization method uses implicit simulation and collocation techniques. Hong, P. E. and Kent, P. D. and Olson, D. W. and Vallado, C. A. Unspecified Center NASA-CR-189653-VOL-1-REV, NAS 1.26:189653-VOL-1-REV NAS1-18230; RTOP 506-49-11-02...

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Download or read book Aspects of Parking Orbit Selection in a Manned Mars Mission written by Prasun N. Desai and published by . This book was released on 1992 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this investigation, which considers precession effects, minimum initial LEO masses were obtained for parking orbits characterized by having near-equatorial inclinations, high eccentricities, and three-dimensional departure burns. Shows that there are a set of orbits characterized by low to moderate essentricities (e = 0.2 to 0.5) and nonequatorial inclinations (i = 70° to 140°) that reduce the initial LEO mass penalty. Therefore, careful selection of a parking orbit at Mars can enhance the potential for satisfying science requirements with minimal mass penalties.

Download or read book Effect of Interplanetary Trajectory Options on a Manned Mars Aerobrake Configuration written by Robert D. Braun and published by . This book was released on 1990 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Approach to Simulation of Extreme Conditions for a Planetary Lander written by Eric Morris Queen and published by . This book was released on 2001 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: