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Rajendran, S.

An End-To-End Airframe Structural System Design

Abstract Views :217 | PDF Views:92

Authors

B. P. Deepak ¹, T. Manojkumar ¹, A. Prashanthan ¹, R. Suresh ¹, Philip K. Mathew ¹, M. I. Junaidh ¹, S. Rajendran ¹, B. S. Raju ¹, C. K. Krishnadasan ¹

Affiliations
1 Vikram Sarabhai Space Centre/Indian Space Research Organization, Thiruvananthapuram 695 022, IN

Source

Current Science, Vol 114, No 01 (2018), Pagination: 123-130

Abstract

Design of aerospace reusable launch vehicle (RLV) structures offers diverse challenges due to stringent specifications in geometry, structural mass, integrity for thermal protection system and interfaces with propulsion, avionics and power systems. Airframe structures for RLVs should cater to the specified strength, stiffness and stability, and meet the functional and integration requirements of aerospace vehicles. To address these challenges, an integrated design cycle comprising load estimation, layout design, torsion box analysis and sizing of structural components is devised and presented. Verification of structural design is done by structural and thermo-structural analyses of the integrated airframe. Qualification of the airframe by integrated airframe test, thermo-structural test and acoustic test is also discussed.

Keywords

Airframe Structure, Integrated Design Cycle, Reusable Launch Vehicle, Thermal Protection System.

Full Text

References

Niu, M. C. Y., Airframe Structural Design, Hong Kong Conmilit Press Ltd, 1988.

Bruhn, E. F., Analysis and Design of Flight Vehicle Structures, Jacobs Publishers, 1973.

Tentative Model of Crustal Structure of the Central Indian Ocean Deformation as Inferred from Spectral and Werner Deconvolution Techniques of Magnetic Data

Abstract Views :169 | PDF Views:84

Authors

R. Divya Bharathi ¹, M. Subrahmanyam ¹, D. S. Ramesh ², S. Rajendran ³

Affiliations
1 Department of Geophysics, Andhra University, Visakhapatnam 530 003, IN
2 Indian Institute of Geomagnetism, Kalamboli Highway, New Panvel, New Mumbai 410 218, IN
3 Department of Earth Sciences, Kerala University of Fisheries and Ocean Studies, Panangad, Cochin 682 506, IN

Source

Current Science, Vol 119, No 9 (2020), Pagination: 1526-1539

Abstract

Nine total magnetic profiles in the S–N direction of the Central Indian Ocean (CIO) have been interpreted with spectral and Werner deconvolution techniques to obtain approximate depths to shallow (magnetic basement) and deeper (Curie isotherm) interfaces of the oceanic crust. From these preliminary depths, tentative crustal models for all these nine profiles are prepared. These tentative models of the area show varying thickness of the oceanic crust, supporting the deformation history. It is inferred from these tentative models that deformation extends beyond the zone identified south of 8°S latitude. There is good agreement between the spectral and Werner deconvolution depths.

Keywords

Deformation Zone, Deconvolution Techniques, Magnetic Anomaly, Oceanic Crust, Tentative Model.

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