Hindustan Aeronautics Assistant Design Engineer Interview Questions and Answers

Sheet metal process involves cutting, bending, and assembling metal sheets to create various products.

• Cutting: Using tools like shears, lasers, or plasma cutters to cut the metal sheets into desired shapes

• Bending: Utilizing press brakes to bend the metal sheets at specific angles

• Assembling: Joining the bent and cut metal sheets together using techniques like welding or fasteners

• Finishing: Applying coatings or finishes ...read more

Types of tolerances include bilateral, unilateral, limit, and fit tolerances.

• Bilateral tolerance: Allows for variation in both directions from the nominal dimension.

• Unilateral tolerance: Allows for variation in only one direction from the nominal dimension.

• Limit tolerance: Specifies the maximum and minimum acceptable limits for a dimension.

• Fit tolerance: Determines the acceptable range of tightness or looseness between

Runge Kutta method is used for numerical solutions of ordinary differential equations.

• Numerical method for solving initial value problems in differential equations

• More accurate than Euler's method

• Commonly used in engineering and physics simulations

• Examples: RK2, RK4, RK45

Hooke's law states that the force needed to extend or compress a spring by a certain distance is proportional to that distance.

• Describes the relationship between the force applied to a spring and the resulting displacement

• Mathematically represented as F = kx, where F is the force, k is the spring constant, and x is the displacement

• Used in mechanical engineering for designing springs, shock absorbers, and other elastic

Upstream regulators control the input flow while downstream regulators control the output flow in a system.

• Upstream regulators adjust the pressure or flow rate of the input fluid before it enters a system

• Downstream regulators control the pressure or flow rate of the output fluid after it exits a system

• Upstream regulators are typically located before the system while downstream regulators are located after the system

• Exa...read more

A servo motor is a rotary actuator that allows for precise control of angular position, velocity, and acceleration.

• Servo motors use feedback control to maintain a desired position or speed

• They typically have a DC motor, a gearbox, and a control circuit

• The control circuit sends a signal to the motor to adjust its position based on feedback from a sensor

• They are commonly used in robotics, CNC machines, and automation sys

DFMEA for motor in production involves identifying potential failure modes and their effects on the system.

• Identify all potential failure modes of the motor

• Determine the severity of each failure mode

• Assess the likelihood of each failure mode occurring

• Evaluate the detectability of each failure mode

• Develop actions to mitigate or eliminate high-risk failure modes

• Continuously monitor and update the DFMEA throughout product...read more

Analyze servo motors in Ansys using appropriate simulation techniques

• Identify the type of servo motor and its specifications

• Create a 3D model of the motor in Ansys

• Apply appropriate boundary conditions and loads

• Run simulations to analyze the motor's performance

• Evaluate results and make necessary design changes

• Repeat simulations until desired performance is achieved