GATE-Toppers Speak

GATE Toppers Talk


I’m Mohammad Sohail.
I scored 80.67 marks in GATE 2016 holding All India Rank 2.

Gate Pathshala is the best institute for cracking GATE aerospace. I had joined this institute in jan’2015. Since then my perspective towards the aerospace subjects has changed a lot. There is a sync between physics and mathematics which most of the universities/institutes lack.

There is a proper schedule for regular and weekend batches. Even if Abrar sir (Director, GATE PATHSHALA) is busy he makes sure class is engaged with other faculty members. (Ph.Ds from IIT Madras) Not a single class disappointed me. It was not just a coaching class, it was like i re-did my engineering right from the basics of 12th class physics and mathematics to providing a strong base for graduate studies in those esteemed IITs and IISc.

The online tests prepared by Abrar sir helped me improve much more beyond the level of GATE AEROSPACE
Apart from GATE they are also helpful to crack exams like CSIR , IES etc.,

GATE PATHSHALA is the sole reason I could get AIR 2 and live my dream of doing Masters at IIT Madras.

I would recommend all the forthcoming GATE aspirants to join this institute and have a better understanding of the subjects. All the best!
Thank you Abrar sir.



I am Suvadeep Saha, AIR 24, GATE 2016, AEROSPACE, joined Gate Pathshala in February, 2015. Gate Pathshala is the best institute for GATE aspirants.The Institute has the best faculties besides facilities. I had my concepts clarified as never before. I would recommend each and every GATE aspirants of Aerospace Stream to join Gate Pathshala to experience a new level of learning altogether.
Thanks to Abrar Nizami (Director) Sir for making things possible as it never was….



Gate Pathshala is the best option for those who are aspiring to get into the prestigious institutes of India through Gate (Aerospace). Coaching given here helps one to build up the confidence to crack the GATE.. It also widens the perspective of the students from mere mathematical view into the physical world of a given problem and thus enriching minds with concepts.In addition to that, Mr.Abrar Nizami sir’s motivational and friendly support makes an aspirant never loose moral strength, which is very essential for preparation for an all India competitive exam like gate. I myself was a student of the institute in gate 2015 batch..this is my personal experience..
H.Poorna sree
AIR-6,Gate2015 AE,

CFD & Design at GATEpathshala

CFD & Design Program:

This course, taught in GATEpathshala by several IITians, serves as an introduction to computational techniques arising in aerospace engineering. Applications are drawn from aerospace topics, aerodynamics, fluid dynamics, rocket propulsion and orbital mechanics.

Techniques include: numerical integration of systems of ordinary differential equations; finite-difference, finite-volume, and particle methods discretization of partial differential equations; numerical linear algebra; eigenvalue problems; and grid generation techniques: Delaunay triangulation, Polygon mesh, Unstructured grid, Structured grid, etc.

Target audience: Advanced undergraduate (3rd or 4th year)

Institution: Gate Pathshala Educational Services LLP.

Boundary Layer GUI:


MATLAB App provides a GUI to study laminar boundary layer problem of flow over a flat plate. This is the 1st MATLAB App in the Virtual Thermal/Fluid Lab series. This MATLAB App allows you to:

  • Visualize a boundary layer
  • Study the growth of boundary layer thickness in response to free-stream velocity
  • Visualize streamlines and velocity profile
  • Learn how to solve boundary layer problem numerically with TDMA
  • Look at the GUI source code and see how it is created

3D Lifting Surfaces through Vortex Lattice Methods(VLM)


There is a method that is similar to panel methods but very easy to use and capable of providing remarkable insight into wing aerodynamics and component interaction. It is the vortex lattice method (vlm), and was among the earliest methods utilizing computers to actually assist aerodynamicists in estimating aircraft aerodynamics. Vortex lattice methods are based on solutions to Laplace’s Equation, and are subject to the same basic theoretical restrictions that apply to panel methods.

As a comparison, vortex lattice methods are:

Similar to Panel methods:

  • singularities are placed on a surface
  • the non-penetration condition is satisfied at a number of control points
  • a system of linear algebraic equations is solved to determine singularity strengths

Different from Panel methods:

  • Oriented toward lifting effects, and classical formulations ignore thickness
  • Boundary conditions (BCs) are applied on a mean surface, not the actual surface (not an exact solution of Laplace’s equation over a body, but embodies some additional approximations, i.e., together with the first item, we find dCp,not Cp upper and Cp lower)
  • Singularities are not distributed over the entire surface
  • Oriented toward combinations of thin lifting surfaces (recall Panel methods had no limitations on thickness).

Vortex lattice methods were first formulated in the late 30’s, and the method was first called “Vortex Lattice” in 1943 by Faulkner. The concept is extremely simple, but because of its purely numerical approach (i.e., no answers are available at all without finding the numerical solution of a matrix too large for routine hand calculation) practical applications awaited sufficient development of computers—the early 60’s saw widespread adoption of the method.