What is Vehicle: Definition and 407 Discussions

A vehicle (from Latin: vehiculum) is a machine that transports people or cargo. Vehicles include wagons, bicycles, motor vehicles (motorcycles, cars, trucks, buses), railed vehicles (trains, trams), watercraft (ships, boats), amphibious vehicles (screw-propelled vehicle, hovercraft), aircraft (airplanes, helicopters) and spacecraft.Land vehicles are classified broadly by what is used to apply steering and drive forces against the ground: wheeled, tracked, railed or skied. ISO 3833-1977 is the standard, also internationally used in legislation, for road vehicles types, terms and definitions.

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  1. A

    How Fast Can a Racing Car Go Before Losing Traction Compared to a Standard Car?

    Hi, I'm new to the forum and this is my first post...so go easy! I have a physics problem to solve and if possible I would love a bit of help here. This is the question: A standard car is driven around in a measured circle, increasing its speed as it goes and is able to reach 85mph before it...
  2. A

    Solving for Space Vehicle Acceleration: Homework Statement

    Homework Statement The first stage of a space vehicle consumed fuel and oxidizer at the rate of 1.60 104 kg/s with an exhaust speed of 3.05 103 m/s. Find the acceleration the vehicle had just as it lifted off the launch pad on the Earth, taking the vehicle's initial mass as 3.00 106 kg...
  3. T

    What Is the Purpose of the Pentagon's Secret X-37B Space Drone?

    http://nypost.com/2014/09/28/what-is-the-pentagons-secret-space-drone-doing/ Cool article. Couple of questions: Why do they need to use self-contained atmospheric protective ensemble suits around the drone? Is that yellow object the man is carrying in the first pic a Geiger counter?
  4. Z

    Calculate speed of vehicle vs distance of pedestrian traveled

    I would like to calculate the above. Here are the factors. This has real life repercussions, and if further variables are required I will provide them if possible. Vehicle weight (x=4986LB) includes 120LB driver, plus 50lb child and 60lb child Pedestrian weight (p=320LB) speed of vehicle (v=?)...
  5. J

    How Can You Model Coolant Cold-Side Temperature and Mass Flow Rate?

    Hi, I had been communicating with Chestermiller for the past many months and I modeled the exhaust gas flowing through the pipe of a car. Now, I had problems with the temperature sensor used, so this model couldn't be applied very well and its been a difficult time due to that. I have to...
  6. O

    Rotor Disassembly from Vehicle Alternator - How?

    Good evening, Before I start, I'm sorry if this is in the wrong forum, I wasn't sure where to post such a question. I have an car alternator which I'm going to be experimenting with to generate electricity from the wind. It's a GM Valeo model, possibly taken out of a Vauxhall. Right now...
  7. H

    Solar panels on the top of a vehicle

    I have project in which I have to come up with the ideas of improving the efficiency of a car (electric). For now I'm considering a hybrid electric car that has more than one power sources to run a vehicle. I came up with an idea that building solar panels on the roof of a vehicle can be one of...
  8. marellasunny

    Electric vehicle component package ideation

    I am in the design phase of a lightweight electric city vehicle with a capacity of 15kWh. I am at a stage where I am moving elements like Electric motors, tranmission, DC-DC converters, Inverters, Battery charger and battery pack in a CATIA software model. In-order to cater to the wide-range of...
  9. K

    Engineering Structural engineer - vehicle structures after civil degree?

    Hi, I'm an engineering student in Civil/Structural engineering and am interested in structures. As well as fixed structures I am also interested in mobile structures like ships. Can I get a job designing vehicle structures after graduating from a degree focused on civil structures? Would the...
  10. R

    How to calculate vehicle speed ?

    hello everyone ,i am doing my project in image processing.i am taking video of car moving on the road and taking video frames of the same. i want to calculate speed of vehicle.using frame rate i can calculate the time elapsed by vehicle to cover some distance. but i have one difficulty, As...
  11. R

    How to calculate vehicle speed?

    hello everyone ,i am doing my project in image processing.i am taking video of car moving on the road and taking video frames of the same. i want to calculate speed of vehicle.using frame rate i can calculate the time elapsed by vehicle to cover some distance. but i have one difficulty, As...
  12. A

    E-bike Project: Finding Torque for 25 kmph Vehicle with 120 kg Gross Weight

    This is my requirement for one of my projects on E-bike. front wheel drive three wheeler with brushless DC geared motor. vehicle speed = 25 kmph Gross weight = 120 kg front wheel dia = 30 cm whether 250 Watts motor can able to achieve this requirement? What equations has to be used to find...
  13. W

    Wind speed acting on a moving vehicle

    Hi all, newby here that could do with a little help. I'm doing a college project and need to work out the head wind speed in m/s that a vehicle would encounter at a various range of speeds in mph, for example a high speed train, so I can compile a graph of the data ranging from 10mph up to...
  14. N

    Grounding chasis in the electric vehicle

    what will happen if I ground my 12v(low voltage system) and 144v(high voltage system) to a common ground?
  15. W

    Kinematics Word Problem - Projectile Fired at a Stationary Vehicle

    Homework Statement A projectile is fired at a stationary vehicle. If the initial separation was 200m and the projectile traveled at a constant 75 m/s, find the acceleration the vehicle would need for a passenger to be able to reach out and calmly pull the projectile into the vehicle. (Assume...
  16. J

    Calculating 0-60 mph time for a vehicle

    After figuring out how to calculate Cd and Crr coefficients, I'd like to continue my "vehicle physics exploration": I'd like to determine how much it takes to go from 0 to 60 mph depending on engine power. Or does it depends on torque? By sure it also depends on air drag, which depends on...
  17. N

    Discharge circuit in electric vehicle

    we are designing a electric car. in that motor controller has capacitors which get charged when supply is given.so across the contactor we are attaching a precharge resistor,which prevents the hiigh inrush of current in motor controller. now we are stuck on the ques that how to discharge the...
  18. C

    Thrust and acceleration of a launch vehicle

    Homework Statement Here is the data I have been given; mass = 3.4*10^6 kg (at lift off) mass of first stage propellants = 2.0*10^6 propellant consumption rate = 1.4*10^4 kg/s g = 9.8 m/s/s Find the thrust of the engines at lift-off. Homework Equations a = T-mg/m The Attempt at...
  19. C

    Optimizing Hybrid Vehicle Layout for Efficient City Driving

    Hi guys, There's a project on hybrid vehicles, and the task is to design and simulate a hybrid vehicle: we have started on the basics, and have come up with a small layout as to how the hybrid will look like. Our main concern is whether the layout will work just with the epicyclic...
  20. E

    Liquid Slosh and Vehicle Stability

    Hi, I'm working on an invention that eliminates liquid slosh in partially filled liquid containers and allows for center of gravity control. I'm wondering if there is a market for such an apparatus where elimination of all slosh is needed. I am aware of baffles, sponges, and diaphragms. A...
  21. J

    Is it possible to recycle vehicle emissions in order to generate elect

    I’ve been doing some research and thinking recently into how vehicle emissions might be used to generate electricity in order to power the vehicle itself. I’ve seen a few products and research projects centred on this topic, although they all seem to be focused on converting the heat in the...
  22. P

    The time for 2 light pulses in a moving vehicle

    Hi, Car is moving at speed v. The pulse is sent inside from the back to the front. It takes time t. Another pulse is sent from the front to the back and takes same t. How should outside observer expect? Does he find that the two pulse hit sides at the same time? It sounds no. How can you apply...
  23. J

    Oscillations of a vehicle driving on a sinewave ground

    Homework Statement In my homework I have to determine how do the speed (constant speed) (V) of damped mass and geometric characterictis of ground (b, h) influence on oscillation values of a model represented on a picture below. Model represents a vehicle driving on a sine wave ground. I...
  24. B

    Engineering Question about vehicle tachometer circuitry

    Hi,dear engineer fellas. Here is my query : We are team of students who compete in international FSAE competition-that is,we are making a racing car if you will.The engine is motorcycle engine. Our team is responsible of the different circuitry . Funny stuff is,we are all mechanical engineers...
  25. johnpauldisec

    Calculating acceleration on different gears in vehicle

    Acceleration is not Force/mass, mechanical advantage (?) I have a vehicle with wheels and electric motor that drives that wheels. Those are characteristics of engine Resultant torque and velocity at wheel will depend on radius of that wheel, as wheel work as gearing. Let's say i will try...
  26. T

    Vehicle Instantaneous Torque in initial motion

    Hi, I'm designing a propulsion system for an electric car as a part of a college project. I'm trying to find the minimum torque needed so the car can begin to move, I'm assuming this will be the greatest torque required for motor selection, provided the vehicle will accelerate relatively...
  27. M

    Pressure on tyres of a vehicle question - Calculating weight

    Homework Statement The pressure in the tyres of a vehicle is 280 kPa. The contact area of each of the four tyres on the ground is 0.012m^2. Calculate the weight of the vehicle. Homework Equations Force = Pressure x Area The Attempt at a Solution 280 kPa = 2800000 Pa Force =...
  28. G

    Vehicle Displays - Designing & Researching

    Hi, What exactly are the things in vehicles that display different attributes of the vehicle called? Like for example in a car you have a display that tells you how fast you are going, the temperature of the engine etc.. I have to design one for a project. I suppose I can design a digital...
  29. C

    Developing an Intelligent Tutoring System for Vehicle Dynamics

    Hello everybody, I am looking for some help from Native english speakers (or otherwise extremely good speakers), for a bulletproof grammar review for a research paper. The paper is about education and automotive engineering, so context is important and so the reason I post it here. If...
  30. P

    Translational and rotational forces in a vehicle moving along a string

    Hi. I've been working on a project of angle stabilization for a vehicle moving along a string, looking like this: The propulsion system is connected to the central wheel, while the outer two wheels are used for support. I've observed that during acceleration the vehicle rotates. I...
  31. P

    Force required to move a vehicle

    Am designing a three wheeled cycle. The total gross weight of my vehicle including the frame + riders will be around 300Kg, which has to move at 20Kmph(5.55 m/s) speed . The basic driving force will be provided by pedaling. Assuming the least acceleration to start from rest as 0.2m/s^2, how...
  32. T

    Can we design vehicle for animal self powered?

    Greeting. This is my first thread in engineering zone. Pleased to meet you all As the topic said. I want to ask about how possible to make animal powered vehicle for animal Or simply said, can we create bicycle for animal? I just think that, Human walk is low efficient compare to bicycle...
  33. W

    Cheaper Electric Vehicle Battery?

    I notice that electric vehicle batteries (such as the one in the Tesla) are made of a bahzillion little batteries. I also notice that electric vehicle batteries seem to be absurdly expensive. A small battery is made of a case, some metals and chemicals. Can they not scale up this process...
  34. F

    Engine specs for large saloon (sedan vehicle)

    Need some help with this question. I have given it loads of thought, but my assumptions are not getting through. Here it is: 1. Objective (a) To determine the power needed to give the chosen vehicle the required performance; to determine the bottom and intermediate gear ratios. (b)...
  35. C

    A pickle in finding vehicle center of gravity.

    So I'm trying to find vehicle center of gravity, but i only have this information: full loaded vehicle weight(3200kg or 31392 N) empty vehicle weight(2000kg or 19620 N) maximum rear axle capacity(1500kg or 14715 N) maximum front axle capacity(1800kg or 17658 N) Is this possible? I have a book...
  36. S

    Trailer hitch and draw bar (vehicle)

    Hi, I'm not a mechanical or an automobile engineer and have a poor knowledge of vehicles as I don't drive. I'm solving a particular problem in mechanics dealing with stress analysis which deals with a trailer hitch (See attached figure) Can anyoen tell me ina very fundamental manner...
  37. jtbell

    Critters on a Transport Vehicle

    You've heard of "Snakes on a Plane", right? How about roaches on a bus? :yuck:
  38. A

    How does an accelator of a vehicle work?

    Does the accelator of a vehicle control the amount of fuel injected in the engine or how does it control the speeding up of the vehicle? I want to know a simple way so that i make make a simple internal combustion engine.
  39. A

    Speed of a vehicle at moment of impact

    if a saab 93 estate approx weight 1600kg is hit in the passager door head on by a toyota avensis weighing 1380kg what speed does it have to be doing to move the saab 10 feet to the side. additional weighs involved are saab plus one person 100kg toyota additional two persons approx 130kg dry...
  40. Y

    RE: vehicle weight, HP, and gearing comparison between vehicles

    Hello all. I am now enrolled at VRI at WWU! I am working on a sort of independent study project. I am making a V12 out of a pair of motorcycle engines to go into a VW based kit car. I have run the IHP formula and come out with 250hp, and 220 lb/ft of torque. The car weighs 1800 pounds...
  41. S

    Tractive force for wheeled vehicle

    Homework Statement a locomotive of mass 20 tonnes hauls a train of mass 200 tonnes up an incline of 1 in 200. the resistive force for the locomotive and the train is 40 Newtons per tonne. the train accelerates from rest to 60km/h in 2km.determine; a) the tractive force of the locomotive b) the...
  42. B

    Energy density and range calculation Electric Vehicle

    I want to calculate the range of an Electric Vehicle (EV) with a Li-ion battery of 200 Wh/kg. Parameters v= 50 km/h = 14 m/s A= 0.8 m2 d = 500 m efficiency = η= 85% mc = 900 kg incl. 100 kg battery ρ = 1.3 kg/m3 First I have calculated the power of the EV with a speed of 50 km/h and...
  43. Z

    Centripetal acceleration of a vehicle on banked circular arc

    Homework Statement A van is moving on a horizontal circular bend in the road of radius 75m. The bend is banked at arctan(1/3) to the horizontal. The maximum speed at which the van can be driven around the bend without slipping is 25m/s. Calculate the coefficient of friction between the road...
  44. C

    Object launched from a moving vehicle

    Got into a discussion today at work with a few co-workers about the physics involved in the below scenario, figured the only way for us to come to a better understanding was to ask someone with more extensive knowledge, so here goes,... A flat bed truck is moving along at 60mph, a person is...
  45. B

    Automotive Vehicle steady state handling & weight transfer

    Hi all I am doing a university module on vehicle dynamics and wish to clarify/enhance my understanding of vehicle handling and the effects of weight transfer. Here are a points based some past exam questions and my answers, if anyone can spot a mistake or would like to add anything this would...
  46. P

    Zero impact vehicle that needs to travel 9 through 12 m

    Homework Statement the vehicle needs to stop as close to a wall that is located anywhere from 9 to 12 m away. (The distance is not given exactly) The vehicle must be self propelled and has other specifications located here...
  47. D

    SIN Contest Water Tank in a Moving Vehicle Question

    Homework Statement Audrey McLaughlin has a vehicle with a built-in rectangular swimming pool. The pool is 2.4m long, 1.4m wide, and is partly filled with water to a constant depth of 1.2m as shown. Calculate the minimum additional height, h, to avoid water spillage when the vehicle maintains...
  48. N

    Finding velocity of a vehicle using Doppler Shift for sound

    Homework Statement You are standing on the side of the Trans-Canada Highway as the Physicsmobile approaches you. As it approaches, you hear an engine noise of 1100 Hz. After it passes, you hear an engine noise of 950 Hz. How fast was the Physicsmobile travelling? Homework Equations...
  49. F

    Aerodynamic drag of a vehicle with an aperture inside

    If a moving vehicle (van) had a 10cm diameter aperture in the bodywork at the front, which forms the mouth of a sealed container within the vehicle, would the drag experienced by the vehicle increase in proportion to the size of the sealed container? In other words, would it matter if the sealed...
  50. Z

    Improving Egg Drop Vehicle Design: A Critique

    The project requires me to build an Egg-Drop Vehicle that is ranked based on volume*mass (So ligher/smaller is better). And, of course, the egg can't break when dropped from 20 meters. critique my design please: http://img138.imageshack.us/img138/8872/eggdrop2.jpg Any suggestions or...
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