Longitudinal Control And Footprint Analysis For A Reusable Military Launch Vehicle
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Longitudinal Control And Footprint Analysis For A Reusable Military Launch Vehicle
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Author : Anhtuan D. Ngo
language : en
Publisher:
Release Date : 2003
Longitudinal Control And Footprint Analysis For A Reusable Military Launch Vehicle written by Anhtuan D. Ngo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Launch vehicles (Astronautics) categories.
In this paper, we will examine a configuration for a reusable military launch vehicle (RMLS) concept. This configuration allows for the vehicle to land in an inverted attitude. Such inverted landing improves the turnaround time of the vehicle by reducing the maintenance requirements of the vehicle's thermal protection system. An analysis is performed to examine the impacts by the configuration on stability, control, and footprint for an RMLS configuration.
Longitudinal Control And Footprint Analysis For A Reusable Military Launch Vehicle
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Author : Anhtuan D. Ngo
language : en
Publisher:
Release Date : 2003
Longitudinal Control And Footprint Analysis For A Reusable Military Launch Vehicle written by Anhtuan D. Ngo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Launch vehicles (Astronautics) categories.
In this paper, we will examine a configuration for a reusable military launch vehicle (RMLS) concept. This configuration allows for the vehicle to land in an inverted attitude. Such inverted landing improves the turnaround time of the vehicle by reducing the maintenance requirements of the vehicle's thermal protection system. An analysis is performed to examine the impacts by the configuration on stability, control, and footprint for an RMLS configuration.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1977
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Science categories.
Footprint Determination For Reusable Launch Vehicles Experiencing Control Effector Failures
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Author : David B. Doman
language : en
Publisher:
Release Date : 2002
Footprint Determination For Reusable Launch Vehicles Experiencing Control Effector Failures written by David B. Doman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Launch vehicles (Astronautics) categories.
The ability to compute the maximum area on the earth's surface (footprint) reachable by an autonomous air vehicle can be useful in planning for the vehicle's safe operations. The information can be important when the vehicle experiences subsystem failures causing it to be unable to maintain its nominal performance. In this paper, we present a method to calculate the footprint of a reusable launch vehicle that experiences a failure in one or more of its aero-control surfaces. During a control effector failure, the maximum attainable moments of the vehicle are reduced, which may decrease the range of conditions that the vehicle can maintain a trimmed condition. Additionally, the lift and drag characteristics of the vehicle can change when control effectors are moved to off-nominal positions to correct for moment imbalance caused by failures or damage. As a result, the footprint of the vehicle is reduced. A technique for calculating the available effectiveness of the aero-control surfaces is used in conjunction with a footprint generation algorithm to include the effects of rotational trim on the vehicle footprint.
Optimal Trajectory Reconfiguration And Retargeting For The X 33 Reusable Launch Vehicle
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Author : Patrick J. Shaffer
language : en
Publisher:
Release Date : 2004-09-01
Optimal Trajectory Reconfiguration And Retargeting For The X 33 Reusable Launch Vehicle written by Patrick J. Shaffer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-09-01 with categories.
This thesis considers the problem of generating optimal entry trajectories for a reusable launch vehicle following a control surface failure. The thesis builds upon the work of Dr. David Doman, Dr. Michael Oppenheimer and Dr. Michael Bolender of the Air Vehicles Directorate, Air Force Research Lab Dayton Ohio. The primary focus of this work is to demonstrate the feasibility of inner loop reconfiguration and outer loop trajectory retargeting and replanning for the X-33 reusable launch vehicle (RLV) following the imposition of a control surface failure. The trajectory generation model employs path constraints generated by an AFRL trim deficiency algorithm coupled with an inner loop control allocator and aerodynamic database that captures the full 6-DOF vehicle aerodynamic effects while utilizing an outer loop 3-DOF model. The resulting optimal trajectory does not violate the trim deficiency constraints and provides additional margins for trajectories flown during failure conditions. The footprints generated by the thesis show that contemporary footprint analysis for vehicles experiencing control surface failures are overly optimistic when compared to those footprints that consider vehicle aerodynamic stability and realistic landable attitudes at the threshold of the landing runway. The results of the thesis also show the performance reductions resulting from decoupling the inner and outer loop and that trajectories can be generated to the landing runway without using a region of terminal area energy management.
Analysis Of The Staging Maneuver And Booster Glideback Guidance For A Two Stage Winged Fully Reusable Launch Vehicle
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Author : J. Christopher Naftel
language : en
Publisher:
Release Date : 1993
Analysis Of The Staging Maneuver And Booster Glideback Guidance For A Two Stage Winged Fully Reusable Launch Vehicle written by J. Christopher Naftel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Launch vehicles (Astronautics) categories.
An Entry Flight Controls Analysis For A Reusable Launch Vehicle
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Author : Philip Calhoun
language : en
Publisher:
Release Date : 2000
An Entry Flight Controls Analysis For A Reusable Launch Vehicle written by Philip Calhoun and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Impact Of A Military Reusable Launch Vehicle On Dominant Maneuver And Focused Logistics
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Author :
language : en
Publisher:
Release Date : 2000
Impact Of A Military Reusable Launch Vehicle On Dominant Maneuver And Focused Logistics written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
This study analyzes the role of a next-generation reusable launch vehicle (RLV) as a potential defense mobility platform for the future. RLV prototypes offer rapid transportation anywhere on the globe within one hour, with a significant cost reduction from today's $10,000 per pound to $1,000 per pound of cargo through space. Unfortunately, extremely complex and time-consuming infrastructure and ground handling requirements hinder the usefulness of the RLV in a military environment. Joint Vision 2020 (JV2020) outlines operational concepts that mold warfighting capabilities to achieve full spectrum dominance in the future. Two of the operational concepts, dominant maneuver and focused logistics, shape mobility requirements and are used to evaluate the need for a military RLV. This project seeks to answer the question: "Could the next-generation RLV be a viable tool to support JV2020's operational concepts of dominant maneuver and focused logistics?" Based on this analysis, current RLV prototypes do not meet the majority of criteria established by JV2020's dominant maneuver and focused logistics. However, if a military RLV were designed and produced specifically for defense transportation, it could potentially overcome the reliability and flexibility obstacles and become a key enabler toward full spectrum dominance.
Concepts Of Operations For A Reusable Launch Vehicle
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Author : Michael A. Rampino
language : en
Publisher:
Release Date : 2005
Concepts Of Operations For A Reusable Launch Vehicle written by Michael A. Rampino and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Technology & Engineering categories.
The focus of this study is an explanation of how the US military could use RLVs, by describing and analyzing two concepts of operations.
Weight Analysis Of Two Stage To Orbit Reusable Launch Vehicles For Military Applications
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Author : Richard A. Caldwell
language : en
Publisher:
Release Date : 2005
Weight Analysis Of Two Stage To Orbit Reusable Launch Vehicles For Military Applications written by Richard A. Caldwell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Reusable space vehicles categories.