Now showing items 21-40 of 108

    • Transforming Aerodynamic Datasets into Parametric Equations for use in Multi-disciplinary Design Optimization 

      Scott, Jeffery M.; Olds, John R. (Georgia Institute of Technology, 1998-10)
      This paper presents a method of transforming aerodynamic datasets generated in Aerodynamic Preliminary Analysis System (APAS) into parametric equations which may subsequently be used in a multidisciplinary design optimization ...
    • Economic Uncertainty of Weight and Market Parameters for Advanced Space Launch Vehicles 

      Whitfield, Jeff A.; Olds, John R. (Georgia Institute of Technology, 1998-10)
      This paper reports the results of a study that evaluated the economic risk inherent in market variability and the uncertainty of developing weight estimates for an advanced space launch vehicle program. The purpose of this ...
    • System Robustness Comparison of Advanced Space Launch Concepts 

      McCormick, David Jeremy; Olds, John R. (Georgia Institute of Technology, 1998-10)
      This research proposes two methods to investigate the robustness differences between competing types of advanced space launch systems. These methods encompass two different phases of the advanced design process and are ...
    • Demonstration of CLIPS as an Intelligent Front-End for POST 

      Budianto, Irene Arianti; Olds, John R.; Baker, Nelson C. (Georgia Institute of Technology, 1999-01)
      Most of the analysis codes used in the design of aerospace systems are complex, requiring some expertise to set up and execute. Usually the Program to Optimize Simulated Trajectories (POST) fails to converge when its control ...
    • SCCREAM v.5: A Web-Based Airbreathing Propulsion Analysis Tool 

      Bradford, John Edward; Olds, John R. (Georgia Institute of Technology, 1999-06)
      To properly assess the advantages and disadvantages of various RBCC design options at the conceptual vehicle level, an engine performance analysis tool is required. This tool must be capable of modeling engine performance ...
    • An Evaluation of Two Alternate Propulsion Concepts for Bantam-Argus: Deeply-Cooled Turbojet+Rocket and Pulsed Detonation Rocket+Ramjet 

      St. Germain, Brad David; Olds, John R. (Georgia Institute of Technology, 1999-06)
      The Bantam-Argus reusable launch vehicle concept is a smaller version of the original Argus single-stage-to-orbit launch vehicle design. Like the original Argus, Bantam-Argus uses a Maglifter launch assist system to provide ...
    • SCORES: Web-Based Rocket Propulsion Analysis Tool for Space Transportation System Design 

      Way, David Wesley; Olds, John R. (Georgia Institute of Technology, 1999-06)
    • Integrating Aeroheating and TPS into Conceptual RLV Design 

      Cowart, Karl K.; Olds, John R. (Georgia Institute of Technology, 1999-11)
      The purpose of this study is to develop the Thermal Calculation Analysis Tool (TCAT) that will enable Aeroheating and Thermal Protection System (TPS) sizing to be, an on-line, automated process. This process is described ...
    • Hyperion: An SSTO Vision Vehicle Concept Utilizing Rocket-Based Combined Cycle Propulsion 

      Olds, John R.; Bradford, John Edward; Charania, Ashraf; Ledsinger, Laura Anne; McCormick, David Jeremy; Sorensen, Kirk (Georgia Institute of Technology, 1999-11)
      This paper reports the findings of a conceptual launch vehicle design study performed by members of the Space Systems Design Laboratory at Georgia Tech. Hyperion is a conceptual design for an advanced reusable launch vehicle ...
    • Stargazer: A TSTO Bantam-X Vehicle Concept Utilizing Rocket-Based Combined Cycle Propulsion 

      Olds, John R.; Ledsinger, Laura Anne; Bradford, John Edward; Charania, Ashraf; McCormick, David Jeremy; Komar, D. R. (Georgia Institute of Technology, 1999-11)
      This paper presents a new conceptual launch vehicle design in the Bantam-X payload class. The new design is called Stargazer. Stargazer is a two-stage-to-orbit (TSTO) vehicle with a reusable flyback booster and an expendable ...
    • A Collaborative Optimization Approach to Design and Deployment of a Space Based Infrared System Constellation 

      Budianto, Irene Arianti; Olds, John R. (Georgia Institute of Technology, 2000-03)
      Collaborative optimization, as a design architecture, has been used successfully in solving large-scale multidisciplinary optimization problems related to aircraft and space vehicle designs. The study presented in this ...
    • Optimized Solutions for the Kistler K- 1 Branching Trajectory Using MDO Techniques 

      Ledsinger, Laura Anne; Olds, John R. (Georgia Institute of Technology, 2000-09)
      Fully reusable two-stage-to-orbit vehicle designs that incorporate 'branching' trajectories during their ascent are of current interest in the advanced launch vehicle design community. Unlike expendable vehicle designs, ...
    • Approximation of Probabilistic Distributions Using Selected Discrete Simulations 

      McCormick, David Jeremy; Olds, John R. (Georgia Institute of Technology, 2000-09)
      The goal of this research is to find a computationally efficient and easy to use alternative to current approximation of direct Monte Carlo methods for robust design. More specifically, a new technique is sought to use ...
    • Exploration of the Design Space for the ABLV-GT SSTO Reusable Launch Vehicle 

      Bradford, John Edward; Olds, John R.; Bechtel, Ryan S.; Cormier, Timothy A.; Messitt, Donald G. (Georgia Institute of Technology, 2000-09)
      The ABLV-GT is a conceptual design for an advanced reusable launch vehicle based on the current NASA Langley ABLV concept. It is a Vision Vehicle class, horizontal takeoff, horizontal landing singlestage-to-orbit vehicle. ...
    • Comparison of Collaborative Optimization to Conventional Design Techniques for a Conceptual RLV 

      Cormier, Timothy A.; Scott, Andrew; Ledsinger, Laura Anne; McCormick, David Jeremy; Way, David Wesley; Olds, John R. (Georgia Institute of Technology, 2000-09)
      Initial results are reported from an ongoing investigation into optimization techniques applicable to multidisciplinary reusable launch vehicle (RLV) design. The test problem chosen for investigation is neither particularly ...
    • TCAT - A Tool For Automated Thermal Protection System Design 

      Cowart, Karl K.; Olds, John R. (Georgia Institute of Technology, 2000-09)
      This paper outlines the development of a new computational heat transfer tool for generating 1-D temperature profiles within thermal protection system materials covering advanced reusable space launch vehicles. The ...
    • Space Tourism: Making it Work for Fun and Profit 

      Olds, John R.; McCormick, David Jeremy; Charania, Ashraf; Marcus, Leland R. (Georgia Institute of Technology, 2000-10)
      This paper summarizes the findings of a recent study of space tourism markets and vehicles conducted by the Space Systems Design Laboratory at Georgia Tech under sponsorship of the NASA Langley Research Center. The purpose ...
    • In-Space Deployment Options for Large Space Solar Power Satellites 

      Olds, John R.; Way, David Wesley; Charania, Ashraf; Budianto, Irene Arianti; Marcus, Leland R. (Georgia Institute of Technology, 2000-10)
      This research was performed at the Space Systems Design Lab at the Georgia Institute of Technology, Atlanta, GA, with the charter of identifying economically attractive candidate space transfer vehicle systems for ferrying ...
    • A Unified Economic View of Space Solar Power (SSP) 

      Charania, Ashraf; Olds, John R. (Georgia Institute of Technology, 2000-10)
      Space Solar Power (SSP) is a concept to beam energy from space to terrestrial power grids that could be feasible in about twenty to forty years. Due to the current climate of limited government funding for such large-scale ...
    • Starsaber: A Small Payload-Class TSTO Vehicle Concept Utilizing Rocket-Based Combined Cycle Propulsion 

      St. Germain, Brad David; Olds, John R.; McIntire, James; Nelson, Douglas K.; Weglian, John E.; Ledsinger, Laura Anne (Georgia Institute of Technology, 2001-07)
      This paper introduces Starsaber, a new conceptual launch vehicle design. Starsaber is a two-stage-to-orbit (TSTO) vehicle capable of putting a 300 lb class payload into low Earth orbit (LEO). The vehicle is composed of a ...