FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2316229185> ?p ?o ?g. }

• W2316229185 abstract "The Kistler K-l is designed to be a fullyreusable, two stage launch vehicle for economical delivery of small satellite ,payloads to low earth orbit. Greatest efficiency and, hence, lowest cost are achieved by flyback of both vehicle stages to the near vicinity of the launch site. The second stage Orbital Vehicle (OV), after deploying the payload and performing necessary phasing maneuvers, performs a deorbit burn to achieve the desired trajectory conditions at atmospheric entry. After entering the atmosphere, the OV is steered aerodynamically until reaching the deployment point . for a stabilization parachute. Subsequently, drogue and main parachutes complete deceleration of the vehicle for landing orrairbags. This paper presents the design of an atmospheric guidance algorithm for bank-to-turn steering of the OV prior to deployment of the stabilization parachute. Reentry guidance targets a desired geographic position for deployment of the drogue parachute. The algorithm employs a numerical predictor/corrector technique to compute the bank angle and the start time of a single bank reversal required to null the predicted target position miss. Aerodynamic loads and heating are limited implicitly by selection of deorbit target conditions for reentry trajectory shaping. Results obtained using the Draper Laboratory K-l Integrated Vehicle Simulation illustrate guidance performance under nominal and dispersed conditions. * Senior Member of the Technical Staff, Member AIAA. Introduction The K-l Orbital Vehicle (OV) is cylindrical in shape, with a blunt nose and a flared skirt on the aft end (Figure 1). The vehicle trims at an angle of attack of approximately 11 to 12 degrees over the Mach range experienced during reentry. This results in a lift-todrag ratio ranging from 0.1 to 0.15. The only control effecters available are 12 small attitude control system (ACS) jets that are used to provide three-axis attitude stabilization and control. Due .to jet size limitations, alteration of the vehicle angle of attack from the trim condition for purposes of trajectory control is not feasible. Thus, active control of the vehicle trajectory is possible via bank maneuvers only. Given the vehicle mass characteristics and ACS jet properties, the bank acceleration is limited to approximately 2.5 deg/sec/sec. A maximum sustainable bank rate of approximately 15 deg/sec is possible; however, 10 deg/sec is used as a practical limit to avoid excessive Euler coupling (and, hence, fuel usage). Figure 1. Kistler K-l Orbital Vehicle (OV) Copyright 01999 by The Charles Stark Draper Laboratory, Inc. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission: 1275 (c)l999 American Institute of Aeronautics & Astronautics or published with permission of author(s) and/or author(s)’ sponsoring organization. When the Mach number decreases to 2.5, a stabilization parachute is --deployed to stabilize the vehicle about the pitch and yaw axes in the low supersonic and transonic regimes. When a specified altitude is reached a drogue parachute and main parachutes are deployed to decelerate the vehicle for subsequent landing. on airbags. The landing site may be located either at the Nevada Test Site (NTS) or in Woomera, Australia. The key requirement levied on the reentry guidance is to steer the vehicle to the proper conditions for parachute deployment to achieve the landing target position with a given accuracy. This must be accomplished without exceeding specified aerodynamic loading and heating rate limits (8 g longitudinal, 4 g lateral, and 58 BTU/sq ft/sec, respectively). ACS fuel usage must be limited in the process. These requirements must be satisfied in the presence of potentially significant known and unknown dispersions in vehicle mass and aerodynamics properties, deorbit trajectory, and atmospheric conditions. An adaptive atmospheric reentry guidance algorithm has been designed which, as part of an overall guidance, navigation, and control subsystem, addresses the above vehicle characteristics and mission design requirements. The algorithm uses a numerical predictor/corrector technique to solve for a bank angle magnitude and the start time of a single bank reversal that will null the predicted target position miss. Numerical predictor/corrector guidance has been suggested previously for application to aerobraking and aerocapture.“2’3 -While computationally intensive, this technique allows the use of relatively high-fidelity models of vehicle and environmental characteristics, with ,correspondingly increased accuracy over analytic techniques. This paper presents a discussion of the decision’ process leading to the guidance design in addition to a detailed description of the key elements of ‘. the guidance algorithm. Details of the flight software implementation of the guidance algorithms are included where beneficial. Finally, simulation results are supplied to illustrate guidance performance. under nominal and dispersed-conditions. Reentry Dynamics Figure 2 is a free-body diagram of the OV during atmospheric reentry. The lift and drag accelerations experienced by the vehicle are expressed as where. . p f atmospheric density Vd = velocity relative to air mass C, , C, = vehicle drag and lift coefficients" @default.
• W2316229185 created "2016-06-24" @default.
• W2316229185 creator A5020026950 @default.
• W2316229185 date "1999-08-09" @default.
• W2316229185 modified "2023-09-25" @default.
• W2316229185 title "Adaptive atmospheric reentry guidance for the Kistler K-1 orbital vehicle" @default.
• W2316229185 cites W1572826548 @default.
• W2316229185 doi "https://doi.org/10.2514/6.1999-4211" @default.
• W2316229185 hasPublicationYear "1999" @default.
• W2316229185 type Work @default.
• W2316229185 sameAs 2316229185 @default.
• W2316229185 citedByCount "26" @default.
• W2316229185 countsByYear W23162291852013 @default.
• W2316229185 countsByYear W23162291852014 @default.
• W2316229185 countsByYear W23162291852015 @default.
• W2316229185 countsByYear W23162291852016 @default.
• W2316229185 countsByYear W23162291852017 @default.
• W2316229185 countsByYear W23162291852020 @default.
• W2316229185 countsByYear W23162291852022 @default.
• W2316229185 crossrefType "proceedings-article" @default.
• W2316229185 hasAuthorship W2316229185A5020026950 @default.
• W2316229185 hasConcept C10138342 @default.
• W2316229185 hasConcept C105339364 @default.
• W2316229185 hasConcept C115903868 @default.
• W2316229185 hasConcept C121332964 @default.
• W2316229185 hasConcept C127413603 @default.
• W2316229185 hasConcept C1276947 @default.
• W2316229185 hasConcept C13393347 @default.
• W2316229185 hasConcept C134066672 @default.
• W2316229185 hasConcept C13662910 @default.
• W2316229185 hasConcept C146978453 @default.
• W2316229185 hasConcept C154945302 @default.
• W2316229185 hasConcept C158379750 @default.
• W2316229185 hasConcept C162324750 @default.
• W2316229185 hasConcept C164705383 @default.
• W2316229185 hasConcept C198082294 @default.
• W2316229185 hasConcept C2775924081 @default.
• W2316229185 hasConcept C2777720157 @default.
• W2316229185 hasConcept C31258907 @default.
• W2316229185 hasConcept C41008148 @default.
• W2316229185 hasConcept C47446073 @default.
• W2316229185 hasConcept C527307 @default.
• W2316229185 hasConcept C6405472 @default.
• W2316229185 hasConcept C71924100 @default.
• W2316229185 hasConceptScore W2316229185C10138342 @default.
• W2316229185 hasConceptScore W2316229185C105339364 @default.
• W2316229185 hasConceptScore W2316229185C115903868 @default.
• W2316229185 hasConceptScore W2316229185C121332964 @default.
• W2316229185 hasConceptScore W2316229185C127413603 @default.
• W2316229185 hasConceptScore W2316229185C1276947 @default.
• W2316229185 hasConceptScore W2316229185C13393347 @default.
• W2316229185 hasConceptScore W2316229185C134066672 @default.
• W2316229185 hasConceptScore W2316229185C13662910 @default.
• W2316229185 hasConceptScore W2316229185C146978453 @default.
• W2316229185 hasConceptScore W2316229185C154945302 @default.
• W2316229185 hasConceptScore W2316229185C158379750 @default.
• W2316229185 hasConceptScore W2316229185C162324750 @default.
• W2316229185 hasConceptScore W2316229185C164705383 @default.
• W2316229185 hasConceptScore W2316229185C198082294 @default.
• W2316229185 hasConceptScore W2316229185C2775924081 @default.
• W2316229185 hasConceptScore W2316229185C2777720157 @default.
• W2316229185 hasConceptScore W2316229185C31258907 @default.
• W2316229185 hasConceptScore W2316229185C41008148 @default.
• W2316229185 hasConceptScore W2316229185C47446073 @default.
• W2316229185 hasConceptScore W2316229185C527307 @default.
• W2316229185 hasConceptScore W2316229185C6405472 @default.
• W2316229185 hasConceptScore W2316229185C71924100 @default.
• W2316229185 hasLocation W23162291851 @default.
• W2316229185 hasOpenAccess W2316229185 @default.
• W2316229185 hasPrimaryLocation W23162291851 @default.
• W2316229185 hasRelatedWork W1572826548 @default.
• W2316229185 hasRelatedWork W1588472551 @default.
• W2316229185 hasRelatedWork W1647394210 @default.
• W2316229185 hasRelatedWork W1965315256 @default.
• W2316229185 hasRelatedWork W1973428716 @default.
• W2316229185 hasRelatedWork W1993648742 @default.
• W2316229185 hasRelatedWork W2030939325 @default.
• W2316229185 hasRelatedWork W2034875463 @default.
• W2316229185 hasRelatedWork W2038086789 @default.
• W2316229185 hasRelatedWork W2038524154 @default.
• W2316229185 hasRelatedWork W2062322109 @default.
• W2316229185 hasRelatedWork W2062396544 @default.
• W2316229185 hasRelatedWork W2063767342 @default.
• W2316229185 hasRelatedWork W2064435344 @default.
• W2316229185 hasRelatedWork W2087251797 @default.
• W2316229185 hasRelatedWork W2108857382 @default.
• W2316229185 hasRelatedWork W2140771941 @default.
• W2316229185 hasRelatedWork W3176041455 @default.
• W2316229185 hasRelatedWork W3177408095 @default.
• W2316229185 hasRelatedWork W816893893 @default.
• W2316229185 isParatext "false" @default.
• W2316229185 isRetracted "false" @default.
• W2316229185 magId "2316229185" @default.
• W2316229185 workType "article" @default.