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Requirements Analysis of a Quad-Redundant Flight Control System [article]

John Backes, Darren Cofer, Steven Miller, Mike Whalen
2015 arXiv   pre-print
In this paper we detail our effort to formalize and prove requirements for the Quad-redundant Flight Control System (QFCS) within NASA's Transport Class Model (TCM).  ...  The goal of this paper is to show the benefits of a compositional verification approach applied to a realistic avionics system and to demonstrate the effectiveness of the AGREE tool in performing this  ...  The authors are especially thankful to Robert Antoniewicz at NASA Armstrong Flight Research Center for many helpful discussions about the QFCS design.  ... 
arXiv:1502.03343v1 fatcat:qcbhwses2jeohoh3qu7bybjnvq

Requirements Analysis of a Quad-Redundant Flight Control System [chapter]

John Backes, Darren Cofer, Steven Miller, Michael W. Whalen
2015 Lecture Notes in Computer Science  
In this paper we detail our effort to formalize and prove requirements for the Quad-redundant Flight Control System (QFCS) within NASA's Transport Class Model (TCM).  ...  The goal of this paper is to show the benefits of a compositional verification approach applied to a realistic avionics system and to demonstrate the effectiveness of the AGREE tool in performing this  ...  The authors are especially thankful to Robert Antoniewicz at NASA Armstrong Flight Research Center for many helpful discussions about the QFCS design.  ... 
doi:10.1007/978-3-319-17524-9_7 fatcat:li6o7ynvfjbizorj3yge2c2vly

Page 327 of Journal of Spacecraft and Rockets Vol. 8, Issue 4 [page]

1971 Journal of Spacecraft and Rockets  
However, the exact value of the design ullage volume required to provide safe emergency landing in all portions of all possible flights must be determined by operations analysis.  ...  Pressurization Options The number of possible pressurization options to maximize flight safety and reliability is quite large—including complete pressurization subsystem redundancy, quad-redundant reg-  ... 

Tilting Path Optimization of Tilt Quad Rotor in Conversion Process Based on Ant Colony Optimization Algorithm

Zhichao Lyu, Zhigang Wang, Dengyan Duan, Lili Lin, Jianbo Li, Yongwen Yang, Yonghong Chen, Yibo Li
2020 IEEE Access  
ACKNOWLEDGMENT The authors would like to express their gratitude to all those who have helped during the writing of this article. They VOLUME 4, 2016  ...  quad rotor UAV flight, and then adequate control system and sufficient experimental validation are necessary for stable flight in a wide range of attitude conditions.  ...  , tilting mechanism, undercarriage and flight control system.  ... 
doi:10.1109/access.2020.3012672 fatcat:eumifraw5bdvveyzk7sy2zbywi

Impact of CCV Requirements on Flight Control System Design

J. A. Boudreau
1977 Journal of Aircraft  
AIRCRAFT Impact of CCV Requirements on Flight Control System Design J. A. Boudreau* Grumman Aerospace Corporation, Bethpage, N. Y.  ...  Also, the extensive signal processing and flexibility required by the multimode control laws and the FBW system redundancy management dictate a digital system mechanization.  ... 
doi:10.2514/3.58889 fatcat:hxo4iaf2d5bqlcq7mv4q4tjjcq

Page 223 of Journal of Spacecraft and Rockets Vol. 12, Issue 4 [page]

1975 Journal of Spacecraft and Rockets  
° in addition to detailing the flight per- formance of Skylab, contains a history of the efforts on the part of the flight controllers and the mission support teams to keep Skylab alive until the flight  ...  A software strapdown algorithm, employing quaternions used in mission analysis simulations, met the requirements of the Skylab mission because the algorithm used rate inputs and had no singularities.  ... 

Phoenix Team's 2015 Unmanned Autonomous System
English

PANA Alexandru, MURESAN Alexandru Camil, VISOIU Constantin, ANDREESCU Theodora, PARVU Petrisor, ZAHARACHESCU Iulian, CHERCIU Claudiu
2015 INCAS Bulletin  
This paper gives a detailed description of SkyEye's system.  ...  SkyEye is a custom built quad copter controlled by the pixhawk, an open-source autopilot.  ...  INCAS BULLETIN, Volume 7, Issue 4/ 2015 Fig. 1 The "SkyEye" quad copter DESCRIPTION OF THE SYSTEMS ENGINEERING APPROACH Mission requirements analysis The AUVSI student UAS competition simulates a  ... 
doi:10.13111/2066-8201.2015.7.4.19 fatcat:6vdi7epza5cmplnyr4qcwkde4u

Research on Manipulation Strategy and Flight Test of The Quad Tilt Rotor in Conversion Process

Yonghong Chen, Zhigang Wang, Zhichao Lyu, Jianbo Li, Yongwen Yang, Yibo Li
2021 IEEE Access  
INDEX TERMS Quad tilt rotor, manipulation redundancy, manipulation strategy, conversion corridor, flight test. 40286 This work is licensed under a Creative Commons Attribution 4.0 License.  ...  A novel manipulation strategy based on states of QTR is proposed in this paper to solve the problem of manipulation redundancy in conversion mode.  ...  It can be seen from the summary analysis of the abovementioned documents that the current solution to the control redundancy and control strategy of the TR mainly relies on experience to assign a predetermined  ... 
doi:10.1109/access.2021.3065020 fatcat:aaetpnx3vnbfleje4p2wdiy47e

Cyber safety and security for reduced crew operations (RCO)

Kevin R. Driscoll, Aloke Roy, Denise S. Ponchak, Alan N. Downey
2017 2017 IEEE/AIAA 36th Digital Avionics Systems Conference (DASC)  
The approach includes a comprehensive safety-hazard analysis of the RCO system to determine top level INFOSEC requirements for RCO and proposes an option for effective RCO implementation.  ...  NASA and the Aviation Industry is looking into "reduced crew operations" (RCO) that would cut today's required two-person flight crews down to a single pilot with support from ground-based crews.  ...  flight (including systems not in the three traditional control layers of FMS, autopilot, and flight control).  ... 
doi:10.1109/dasc.2017.8101986 fatcat:ivyzefzu3bcaxgm6aguprs6svy

Cyber safety and security for reduced crew operations (RCO)

Kevin R. Driscoll, Aloke Roy, Denise S. Ponchak, Alan N. Downey
2017 2017 IEEE Aerospace Conference  
The approach includes a comprehensive safety-hazard analysis of the RCO system to determine top level INFOSEC requirements for RCO and proposes an option for effective RCO implementation.  ...  NASA and the Aviation Industry is looking into "reduced crew operations" (RCO) that would cut today's required two-person flight crews down to a single pilot with support from ground-based crews.  ...  flight (including systems not in the three traditional control layers of FMS, autopilot, and flight control).  ... 
doi:10.1109/aero.2017.7943785 fatcat:a2lf2qhqe5dy5ijwhqy5h7tzvu

Subject Index

REINER SUIKAT, KENT DONALDSON, DAVID R. DOWNING
1989 Journal of Guidance Control and Dynamics  
Software Technology Intercomputer Communication Architecture for a Mixed Redundancy Distributed System G89-085 Flight Control System Design for an In- Flight Simulator G89-057 Evaluation of a Command  ...  Expert System and Analytical Redundancy Concepts for Fault-Tolerant Flight Control G89-006 Computer Science Hierarchical Partitions in Cyclic Closed Systems: A Hardware-Oriented Approach G89-084 Computational  ... 
doi:10.2514/3.20438 fatcat:nj2kytbqkjfyvdni6nj7egf6ai

Lunar flying vehicle propulsion system

L. CAREY, C. STRICKLIN
1971 Journal of Spacecraft and Rockets  
Pressurization Options The number of possible pressurization options to maximize flight safety and reliability is quite large—including complete pressurization subsystem redundancy, quad-redundant reg-  ...  However, the exact value of the design ullage volume required to provide safe emergency landing in all portions of all possible flights must be determined by operations analysis.  ... 
doi:10.2514/3.30273 fatcat:qub5hiz6ijevbnmknvmtcfzuvu

Page 533 of Journal of Aircraft Vol. 8, Issue 7 [page]

1971 Journal of Aircraft  
A high level of safety is provided in this system through the design and use of redundant and backup systems.  ...  This design feature provides the DC-10 with a quad channel autopilot where, during an autoland approach, each one of the four channels is controlling an individual flight control sur- face segment (see  ... 

A New Concept of GPU-Accelerated On-Board Visual System for Aerial Vehicles

Yevhenii (Eugene) A. SHKVAR, Zhechen Dai, Shi-ju E, Jian Cheng Cai
2020 Engineering Science & Technology  
In particular, it was shown that the required for real vehicles accuracy and productivity can be reached in case of developing the visual multichannel system, as an additional source of flight state information  ...  But these helpful controlling systems are not perfect, under some unfavorable circumstances they get stuck or start to function unpredictably when faced with a much more complicated real situation than  ...  of flight state information and for coordinating the current flight data from other sensors for reasonable synthesizing the required control laws.  ... 
doi:10.37256/est.122020451 fatcat:liaaqbujw5b6jdzdrhiodgenpa

Interferometer real time control development for SIM

Charles E. Bell
2003 Interferometry in Space  
This paper provides an overview of the architecture, design, integration, and test of the SIM flight interferometer real time control to meet challenging flight system requirements for the high processor  ...  The electronics and software architecture of the interferometer real time control core and its adaptation to a flight design concept are described.  ...  ACKNOWLEDGMENTS The research described in this publication was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space  ... 
doi:10.1117/12.460930 fatcat:q5coy6uz2jgtzowanynzflwsvm
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