NDLI: Sub-optimal and optimal periodic solutions for hypersonic transport

Content Provider	IEEE Xplore Digital Library
Author	Chuang, C.-H. Morimoto, H.
Copyright Year	1995
Description	Author affiliation: Sch. of Aerosp. Eng., Georgia Inst. of Technol., Atlanta, GA, USA (Chuang, C.-H.; Morimoto, H.)
Abstract	It has been known that periodic cruise control can save fuels for many aircraft and engine models. Applying the periodic operation to hypersonic transports with a scramjet engine is particularly interesting since fuel saving is critical to achieve maximum range of the transports. In this paper, the authors construct an analytic model of hypersonic transport and engines by using data from available literature in the area of the space plane and by using some theory deduction. A sub-optimal solution for periodic cruise of the hypersonic transport model has been determined by assuming the shape of altitude as a sinusoidal function of range and by adopting a bang-bang type throttle control. The numerical results show this sub-optimal solution has a fuel saving of 3.5% over the steady-state cruise. More importantly, this sub-optimal solution gives a good estimate for initial values of the two-point boundary-value problem related to the optimal solution. The sub-optimal solution is modified to the family solutions of the optimal solution. The minimizing-boundary-condition method (MBCM) is then used to converge the optimal solution. The optimal solution shows fuel savings of 8% over the steady state cruise.
Starting Page	1186
Ending Page	1190
File Size	398816
Page Count	5
File Format	PDF
ISBN	0780324455
DOI	10.1109/ACC.1995.520937
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-06-21
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Atmospheric modeling Fuels Shape control Engines Steady-state Temperature Aircraft Vehicle dynamics Aerodynamics Equations
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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