Fuel Optimal Retrothrust Control Programs For Propulsive Soft Landing Maneuvers In The Presence Of Drag
DOWNLOAD
Download Fuel Optimal Retrothrust Control Programs For Propulsive Soft Landing Maneuvers In The Presence Of Drag PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Fuel Optimal Retrothrust Control Programs For Propulsive Soft Landing Maneuvers In The Presence Of Drag book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Fuel Optimal Retrothrust Control Programs For Propulsive Soft Landing Maneuvers In The Presence Of Drag
DOWNLOAD
Author : A. Bejczy
language : en
Publisher:
Release Date : 1969
Fuel Optimal Retrothrust Control Programs For Propulsive Soft Landing Maneuvers In The Presence Of Drag written by A. Bejczy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Drag (Aeronautics) categories.
A fuel-optimal retrothrust control program is demonstrated to be significantly superior to an acceleration-type control law for the terminal phase of a propulsive soft-landing mission to an atmospheric planet, using either a vertical trajectory or a gravity-turn ballistic trajectory. These trajectories are considered under conditions in which (1) the drag depends quadratically on the velocity and inverse-exponentially on the altitude, (2) it is desirable to reach zero velocity at zero altitude, and (3) the terminal value of the ballistic path angle is unspecified. The equivalent terminal-value optimal control problem (maximazing the final mass of the space vehicle), which could be termed an "Inverse" Goddard Problem, is treated by applying Pontryagin's Maximum Principle. It is proved that for both types of trajectories, the fuel-optimal retrothrust control program is always of the bang-bang type, composed of only two sections in the optimal control sequence. The fuel-optimal retrothrust control, when compared with the results of the acceleration-type control law, gives a decrease of 35% and 55% in fuel consumption for the vertical and ballistic trajectories, respectively, and a decrease of 45% and 75% in required controlled landing time for the two types of trajectories, respectively.
Space Programs Summary
DOWNLOAD
Author : Jet Propulsion Laboratory (U.S.)
language : en
Publisher:
Release Date : 1968-12
Space Programs Summary written by Jet Propulsion Laboratory (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968-12 with Space flight categories.
Scientific And Technical Aerospace Reports
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1969
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Aeronautics categories.
Collection Of Technical Papers On Guidance Theory And Flight Mechanics
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1969
Collection Of Technical Papers On Guidance Theory And Flight Mechanics written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Aerodynamics categories.
Catalog Of Copyright Entries Third Series
DOWNLOAD
Author : Library of Congress. Copyright Office
language : en
Publisher: Copyright Office, Library of Congress
Release Date : 1972
Catalog Of Copyright Entries Third Series written by Library of Congress. Copyright Office and has been published by Copyright Office, Library of Congress this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Copyright categories.
U S Government Research Development Reports
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1969-10
U S Government Research Development Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969-10 with Science categories.
Bibliography
DOWNLOAD
Author : Jet Propulsion Laboratory (U.S.)
language : en
Publisher:
Release Date : 1968
Bibliography written by Jet Propulsion Laboratory (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Aeronautics categories.
Books And Pamphlets Including Serials And Contributions To Periodicals
DOWNLOAD
Author : Library of Congress. Copyright Office
language : en
Publisher:
Release Date : 1969-07
Books And Pamphlets Including Serials And Contributions To Periodicals written by Library of Congress. Copyright Office and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969-07 with American literature categories.
Catalog Of Copyright Entries Third Series
DOWNLOAD
Author : Library of Congress. Copyright Office
language : en
Publisher:
Release Date : 1969
Catalog Of Copyright Entries Third Series written by Library of Congress. Copyright Office and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Copyright categories.
The record of each copyright registration listed in the Catalog includes a description of the work copyrighted and data relating to the copyright claim (the name of the copyright claimant as given in the application for registration, the copyright date, the copyright registration number, etc.).
Government Reports Announcements Index
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1969
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 1969 with Science categories.