Ali Javed

Dr. Ali Javed


Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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30 May 2020 in Micromachines
Verified
Journal Article
Open access
PDF file
TSTaimur Shams
Taimur Shams
SSSyed Irtiza Ali Shah
Syed Irtiza Ali Shah
AJAli Javed
Ali Javed
SHSyed Hossein Raza Hamdani
Syed Hossein Raza Hamdani
Airfoil selection procedure, wind tunnel testing and an implementation of 6-DOF model on flying wing micro aerial vehicle (FWMAV) has been proposed in this research. The selection procedure of airfoil has been developed by considering parameters related to aerodynamic efficiency and flight stability. Airfoil aerodynamic parameters have been calculated using a potential flow solver for ten candidate airfoils. Eppler-387 proved to be the most efficient reflexed airfoil and therefore was selected for fabrication and further flight testing of vehicle. Elevon control surfaces have been designed and evaluated for longitudinal and lateral control. The vehicle was fabricated using hot wire machine with EPP styrofoam of density 50 Kg/ m 3 . Static aerodynamic coefficients were evaluated using wind tunnel tests conducted at cruise velocity of 20 m/s for varying angles of attack. Rate derivatives and elevon control derivatives have also been calculated. Equations of motion for FWMAV have been written in a body axis system yielding a 6-DOF model. It was found during flight tests that vehicle conducted coordinated turns with no appreciable adverse yaw. Since FWMAV was not designed with a vertical stabilizer and rudder control surface, directional stability was therefore augmented through winglets and high wing leading edge sweep. Major problems encountered during flight tests were related to left rolling tendency. The left roll tendency was found inherent to clockwise rotating propeller as ‘P’ factor, gyroscopic precession, torque effect and spiraling slipstream. To achieve successful flights, many actions were required including removal of excessive play from elevon control rods, active actuation of control surfaces, enhanced launch speed during take off, and increased throttle control during initial phase of flight. FWMAV flew many successful stable flights in which intended mission profile was accomplished, thereby validating the proposed airfoil selection procedure, modeling technique and proposed design.

30 October 2019 in Engineering with Computers
Verified
Journal Article
Closed access
PDF file
AJAli Javed
Ali Javed
ABAli Asadullah Baig
Ali Asadullah Baig
Kamal DjidjeliKamal Djidjeli
Kamal Djidjeli
ASAamer Shahzad
Aamer Shahzad
Asad HameedAsad Hameed
Asad Hameed

1 October 2019 in Engineering Analysis with Boundary Elements
Verified
Journal Article
Closed access
AJAli Javed
Ali Javed
FMFarrukh Mazhar
Farrukh Mazhar
TSTaimur Ali Shams
Taimur Ali Shams
MAMuhammad Ayaz
Muhammad Ayaz
NHNadeem Hussain
Nadeem Hussain