A design chart has been proposed, from which the optimal hybrid airship can be selected, corresponding to a given time constraint and cruise altitude. Acknowledgment The authors wish to thank the anonymous reviewers for their excellent comments and suggestions, which lead to significant im- provement in the content of the paper. References  Ardema, M. D., “ Feasibility of Modern Airships: Preliminary Assessment, ” Journal of Aircraft , Vol. 14, No. 11, 1977,pp. 1140 – 1148. doi:10.2514/3.58902  Tianshu, L., Liou, W. W., and Schulte, M., “ Aeroship: A Hybrid Platform, ” Journal of Aircraft , Vol. 46, No. 2, 2009, pp. 667 – 674.  Sagar,K.K.,Verma,A.R., and Priyadarshi,P., “ Commenton ‘ Aeroship: A Hybrid Flight Platform ’ , ” Journal of Aircraft , Vol. 51, No. 2, 2014, p. 701. doi:10.2514/1.C031974  Zhang, K.-S., Han, Z.-H., and Song, B.-F., “ Flight Performance Analysis of Hybrid Airship: Revised Analytical Formulation, ” Journal of Aircraft , Vol. 47, No. 4, 2010, pp. 1318 – 1330. doi:10.2514/1.47294  Mackrodt, P. A., “ Further Studies in the Concept of Delta Wing Hybrid Airships, ” Journal of Aircraft , Vol. 17, No. 10, pp. 734 – 740. doi:10.2514/3.57960  Carichner, G. E., and Nicolai, L. M., Fundamentals of Aircraft and Airship Design: Airship Design and Case Studies , Vol. 2, AIAA Education Series, AIAA, Reston, VA, 2013, Chap. 4. Fig. 12 Fuel consumption at BR i opt vs t max at various altitudes. Fig. 13 BR i opt contour lines on altitude – t max chart. Fig. 14 Volume contour lines at BR i opt on altitude – t max chart. 6 AIAA Early Edition / VERMA, SAGAR, AND PRIYADARSHI Downloaded by Vikram Sarbhai Space Centre LIbrary Thiruvanathapuram on August 18, 2014 | | DOI: 10.2514/1.C032038 View publication stats
You've reached the end of your free preview.
Want to read all 7 pages?