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ISSN: 2348-7887

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Dr. Bimlesh Lochab

Industrial Tribology Machine Dynamics & Maintenance

Engineering Centre (ITMMEC)

Indian Institute of Technology Delhi, India.

Prof. S. Ramaprabhu

Alternative Energy Technology Laboratory,

Department of Physics,

Indian Institute of Technology, Chennai, India.

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School of Materials Science and Technology,

Institute of Technology, Banaras Hindu University,

Varanasi, India.

Dr. Rakesh Kumar

Assistant Professor, Department of

Applied Chemistry, BIT Mesra,

Patna, India.

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Gargi Asha Jha

Nupur Anand

Priyanka Aswal

Sona Chahal

STM Journal (s) Advisory Board

Dr. Ashish RunthalaLecturer, Biological Sciences Group,

Birla Institute of Technology & Science, Pilani Rajasthan, India.

Dr. Baldev Raj

Former Director, Indira Gandhi Centre for Atomic Research, India.

Chairman, National Institute of Technology Puducherry, India.

Dr. Baskar KaliyamoorthyAssociate Professor, Department

of Civil Engineering National Institute of Technology Trichy, India.

Prof. Bankim Chandra RayProfessor and Head, Department of

Metallurgical and Materials Engineering National Institute of Technology,

Rourkela, India.

Prof. D. N. Rao Professor, Department of Biochemistry,

AIIMS, New Delhi, India.

Prof. Jugal KishoreProfessor, Department of Community

Medicine, Maulana Azad Medical College, New Delhi, India.

Dr. Pankaj PoddarScientist, Physical & Materials ChemistryDivision, National Chemical Laboratory,

Pune, India.

Dr. Hardev Singh VirkProfessor Emeritus, Eternal

University, Baru Sahib, India.

Dr. Nandini Chatterjee SinghAssociate Professor,

National Brain Research Centre, Manesar, India.

Dr. Shankargouda PatilAsst. Prof., Department of Oral

Pathology, KLE Society's Institute of Dental Sciences, Bangalore, India.

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Engineering Department, NIT, Rourkela, India.

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Indian Institute of Technology Madras, India.

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Nurture Earth R&D Pvt LtdMIT Campus, Beed bypass road,

Aurangabad, India.

Dr. Rakesh KumarAssistant Professor,

Department of Applied Chemistry, BIT Mesra, Patna, India.

Dr. Priyavrat TharejaHead, Materials and Metallurgical

Engineering Department, PEC University of Technology,

Chandigarh, India.

STM Journal (s) Advisory Board

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Dr. Parammasivam Kanjikovil Mahali Anna University , Madras, India.

Prof. Kalyan Prasad SinhamahapatraHead, Department of Aerospace

Engineering, IIT Kharagpur, India.

Dr Yuwaraj Marotrao Ghugal Department of Applied Mechanics, Govt.

College of Engineering Station Road, Osmanpura,

Aurangabad, India.

Vijayaraja KengaiahProf. , Head, Aeronautical Engg. Dept., P.B. College of Engg., Chennai, India.

Prof. Murthy RL CDepartment of Aerospace Engineering,

Indian Institute of Science, Bangalore, India.

Dr. Subba Raju P.VProf. & Chairman, Aeronautical & Mechanical Engineering Division,

Institute of Aeronautical Engineering, Dundigal, Hyderabad, India.

Dr Ashok K SinghDepartment of Aerospace Engineering,

Defence Institute of Advanced Technology, Girinagar, Pune, India.

Amarjeet SinghDepartment of Computer Applications,

Institute of Environment and Management, Lucknow, Uttar Pradesh, India.

Dr. Tiauw Hiong GoNanyang Technological University,

Singapore.

Dr. Ravishekar KannanComputational Fluid Dynamics (CFD), Research Corporation, United States.

Mr. Ravindranath NayakHead, Aerospace Electronics & Systems

Division, National Aerospace Laboratories (NAL), CSIR Airport Rd,

Kodihalli, Bangalore India.

Dr. M. R. NayakHead, Aerospace Electronics & Systems

Division, and Advisor to Director National Aerospace Laboratories, India.

I take the privilege to present the hard copy compilation for the [Volume 4 Issue (2)] of Journal of

Aerospace Engineering & Technology (JoAET). The intension of JoAET is to create an atmosphere

that stimulates creativeness, research and growth in the area of Aerospace Engineering &

Technology.

The development and growth of the mankind is the consequence of brilliant Research done by

eminent Scientists and Engineers in every field. JoAET provides an outlet for Research findings and

reviews in areas of Aerospace Engineering & Technology found to be relevant for National and

International recent developments & research initiative.

The aim and scope of the Journal is to provide an academic medium and an important reference for

the advancement and dissemination of Research results that support high level learning, teaching and

research in the domain of Aerospace Engineering & Technology.

Finally, I express my sincere gratitude and thanks to our Editorial/ Reviewer board and Authors for

their continued support and invaluable contributions and suggestions in the form of authoring write-

ups/ reviewing and providing constructive comments for the advancement of the journals. With

regards to their due continuous support and co-operation, we have been able to publish quality

Research/Reviesw findings for our customers base.

I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.

Dr. Archana Mehrotra

Director

STM Journals

Director's Desk

STM JOURNALS

1. Attitude Determination using Extended Kalman Filter for Elliptical Orbit Satellites Ilamaran G, Anitha G 1

2. Design and Fabrication of a Flapping Wing Unmanned Aerial Vehicle with Bird Kinematics Nandu Jith P.J., Harsh Gupta 9

3. Air Intake AerodynamicsS.C. Gupta 22

ContentsJournal of Aerospace Engineering & Technology

JoAET (2014)© STM Journals 2014. All Rights Reserved

Journal of Aerospace Engineering & Technology ISSN: 2231-038X (online), ISSN: 2348-7887 (print)

Volume 4, Issue 2

www.stmjournals.com

Attitude Determination using Extended Kalman Filter

for Elliptical Orbit Satellites

Ilamaran G, Anitha G* Department of Aerospace Engineering, MIT, Anna University, Chennai, India

Abstract This paper investigates the influence of eccentricity on the performance of the attitude

determination and control subsystem (ACDS) pointing of passive low earth orbit (LEO)

satellites stabilized by a gravity-gradient boom. The contribution of this work is two-fold. First, satellite attitude dynamics and kinematics are modeled by introducing the orbit

eccentricity in the equation of motion of an LEO satellite in order to provide the best

scenarios in which satellite operators can keep the nominal functionality of LEO satellites with a gravity-gradient boom. Second, a quaternion-based extended Kalman filter (EKF)

is analyzed when the orbit eccentricity is considered in order to determine the influence of this disturbance on the convergence and stability of the filter. The simulations of this

work are based on the real parameters of LEO satellite stabilized by gravity-gradient

boom. The obtained results show that the orbit eccentricity has a big influence on the pointing system accuracy by causing micro-vibrations that affect the geocentric pointing

Keywords: Spacecraft attitude dynamics, Kalman filter, gravity gradient torque,

eccentricity

JoAET (2014)© STM Journals 2014. All Rights Reserved

Journal of Aerospace Engineering & Technology ISSN: 2231-038X (online), ISSN: 2348-7887 (print)

Volume 4, Issue 2

www.stmjournals.com

Design and Fabrication of a Flapping Wing Unmanned

Aerial Vehicle with Bird Kinematics

Nandu Jith P.J.*, Harsh Gupta Amity Institute of Space Science and Technology, Amity University, Noida, New Delhi, India

Abstract The artificial design of the bird was started out with the inspiration of bird flight and

breaking that complex motion into a mechanism that is easily replicable. The design went

with an active reference to the already existing as well as unique flapping wing UAV titled ʻsmart birdʼ by the Festo Corporation. But unlike the bird designed by Festo, we

have changed the active torsion mechanism design and made it completely mechanical

for steady flight. The bird will also feature video surveillance features with live feed send to any device on ground through Wi-Fi. Thus the design has taken a smart turn to

building an UAV that flies like a bird, making it blend in and undetectable to the naked eye and provide surveillance capability over an area to any number of people on ground

thus providing a new version to the concept ʻeyes in skyʼ.

Keywords: Biologically Inspired Flight, Torsion Mechanism Using Material

Elasticity, Experimental Techniques, Cost Effectiveness

*Author for Correspondence E-mail: nandujithpj@gmail.com

JoAET (2014)© STM Journals 2014. All Rights Reserved

Journal of Aerospace Engineering & Technology ISSN: 2231-038X (online), ISSN: 2348-7887 (print)

Volume 4, Issue 2

www.stmjournals.com

Air Intake Aerodynamics

S.C. Gupta*

Department of Aeronautical Engineering, MVJ College of Engineering, Bangalore, India

Abstract Air Intake aerodynamic design for fighter aircraft is described herein. Axial flow

compressor is considered. The air intake pressure recovery mass flow requirement, flow distortion and flow stability are explained. Some design related issues are addressed. Air

intakes of varied design are compared. Computational numerical techniques are brought out for design and analysis.

Keywords: Aerodynamics, Compressor, Air intake