Forces acting on the vehicle

To search and list out the various type of aircraft vehicle’s total weight MTOW = Maximum take-off weight, MLW = Maximum landing weight, TOR = Take-off run (SL, ISA+15°, MTOW), LR = Landing run (SL, ISA+15°, MLW) Type MTOW [kg] MLW [tons] TOR [m] LR [m] Antonov An-225 6,40,000 591.7 3500   Scaled Composites…

For a defined driving cycle, calculate the energy required for braking. A significant amount of energy is dissipated by braking.1–3 Braking a 1500- kg vehicle from 100 km/h to zero speed dissipates about 0.16 kWh of energy [(1/2)MV2] in a few tens of meters. If this amount of energy is dissipated by coasting and…

  ‘Speed control of a DC motor using BJT H-bridge’ The Bipolar Junction Transistor when used for power switching applications, operates as an IGBT. When it is conducting (BJT operating in the saturated region), a forward voltage Vf is developed between collector and emitter (in the…

1.Which types of power converter circuits are employed in electric and hybrid electric vehicle?  Sol: Electronic circuits typically require dc voltage sources in order to function. Ac voltages are used for bulk power generation, transmission, and local distribution. Thus, an ac-dc converter is used to interface the…

Introduction: The DC machine can be classified into two types namely DC motor as well as DC generator. Most of the DC machines are equivalent to AC machines because they include AC currents as well as AC voltages in them. The output of the DC machine is DC output because they convert AC voltage to DC voltage. The…

Introduction: Power train blockset Powertrain Blockset provides fully assembled reference application models of automotive powertrains, including gasoline, diesel, hybrid, and electric systems. It includes a component library for simulating engine subsystems, transmission assemblies, traction motors, battery packs, and…

Aim: To Simulate the range and gradeability of the vehicles in ADVISOR tool. Objective: To simulate the range of the pure electric vehicle carrying the payload weight of 500kg Adding the extra battery capacity and simulate the vehicle. To simulate the gradeability test of the Toyota prius japan model. Solution: Introduction…

Aim: To study the Wide open throttle condition of a vehicle. Governing equations: `F_ad=1/2*ρ*A*v^2*c_d` Fad= Aerodynamic force Rho(ρ) = Fluid density A= Frontal area V = velocity of the body Cd drag coefficient `F_rr=μ_rr*m*g` Frr=Rolling Resistance force Mu (μ)= rolling resistance co efficient m=mass of…

Aim: Forces acting on the vehicles Objective: To find the max speed of the motor To prepare a excel calculator for the power propulsion of the vehicle To calculate the power if the rolling resistance effect increased by 15% To determine the gradability, average speed and force acting on vehicle in Rage Rover’s Dragon…

Introduction: Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The rotational energy typically comes from an engine or electric motor. They are a sub-class of dynamic axisymmetric work-absorbing Turbomachinery The fluid enters the…

Introduction: An air flow bench is a device used for testing the internal aerodynamic qualities of an engine component and is related to the more familiar wind tunnel. It is used primarily for testing the intake and exhaust ports of cylinder heads of internal combustion engines. It is also used to test the flow capabilities…

Introduction: An airfoil  is the cross-sectional shape of a wing, blade of a propeller, rotor, or turbine, or sail. An airfoil-shaped body moving through a fluid produces an aerodynamic force. The component of this force perpendicular to the direction of motion is called lift. The component parallel to the direction…

Flow over a Simple Cylinder: Here in this study we perform the flow simulation on a simple cylinder model First we model the cylinder , the diameter of the cylinder is 0.02m and it is extruded to 0.05m The analysis type is set to the external flow, Time dependent is checked so that our flow is transientflow. Fluid selected…

Introduction: Every structure has the tendency to vibrate at certain frequencies, called natural or resonant frequencies. Each natural frequency is associated with a certain shape, called mode shape, that the model tends to assume when vibrating at that frequency. When a structure is properly excited by a dynamic load…

Introduction: A valvetrain or valve train is a mechanical system that controls operation of the valvers in an internal combustion engine, whereby a sequence of components transmits motion throughout the assembly. A typicalvalvetrain consists of valve, rocker arms, pushrods, valve mount, and camshaft. valvetrain opening/closing…

Introduction: An epicyclic gear train (also known as planetary gear) consists of two gears mounted so that the centre of one gear revolves around the centre of the other. A carrier connects the centres of the two gears and rotates to carry one gear, called the planet gear or planet pinion, around the other, called the…

Introduction: An internal combustion engine  is a heat engine where the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combustion engine, the expansion of the high-temperature and high-pressure gases produced…

The Geneva drive or Maltese cross is a gear mechanism that translates a continuous rotation movement into intermittent rotary motion. The rotating drive wheel is usually equipped with a pin  that reaches into a slot located in the other wheel (driven wheel) that advances it by one step at a time. The main wheel also…

Introduction: Data analysis is a process of inspecting, cleansing, transforming and modeling data with the goal of discovering useful information, informing conclusion and supporting decision-making. Data analysis has multiple facets and approaches, encompassing diverse techniques under…

Introduction: Curve fitting is the process of constructing a Curve  or mathematical function that has the best fit to a series of data points possibly subject to constraints. Curve fitting can involve either interpolation where an exact fit to the data is required, or smoothing  in which…

Introduction: Named after the Issac Newton and Joseph Rapson .  This method is one of the  best method to solve the complex numerical equation, this method is based on the linear approximation. This method has the  fast rate of convergence than other methods . This method uses Tangent line of curve to locate…

Introduction: Four stroke thermodynamic Otto cycle was invented by the German scientist Nicolaus August Otto in the year around 1862 . Thermodynamic Otto cycle is considered to be one of the most commonly used practical cycles. Present days’ all four stroke internal combustion (IC) engines used…

Introduction: A second order ordinary differential equation is an ordinary differential equation in which any derivatives with respect to the independent variable have order no greater than 2. Ordinary differential equations helps  us to solve the many engineering…

  Aim: To write a code in matlab to  optimize the stalagmite function, and to find the global maxima of the given function,   Introduction: Genetic algorithms are a type of optimization algorithm, meaning they are used to find the optimal solution to a given computational problem that maximizes or minimizes…

Aim: To read and extract the coefficents for the calculation of different species obtained from the NASA’s therm.dat file. Objective: To extract the 14 co efficients of all the species Calculate the specific heat, enthalpy, entropy Plot the graphs for the Specific heat, Enthalpy, Entropy, with respect to temperature.…

Aim: to produce the curve fit using matlab.. and to determine the best fit to predict the data   Introduction: Curve fitting is the process of constructing a curve or mathematical functiion that has the best fit to a series of data points possibly subject to constraints. Curve fitting can involve either interpolation,…

Introduction: A second order ordinary differential equation is an ordinary differential equation in which any derivatives with respect to the independent variable have order no greater than 2. Ordinary differential equations helps  us to solve the many engineering…