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. X

    Average velocity of vehicle

    Homework Statement A vehicle accelerates from 2 m/s to 26 m/s in 12 seconds. Determine the acceleration. Also find the average velocity and the distance travelled. Homework Equations Average velocity = Total distance/ time taken The Attempt at a Solution Acceleration = (26-2)/12...
  2. T

    Friction: decelerating vehicle on dry and wet concrete

    Homework Statement A pick up truck is traveling at 58 km/h on a dry horizontal concrete surface when the driver applies the brakes locking the wheels. (a) How far does the car travel before coming to rest? (b) How long does it take the car to stop after the driver applies the brakes? (c) How...
  3. A

    Designing a Vehicle with Elastics/Balloons: A Hairpin Turn Challenge!

    Hello everyone, first post on this forum and I'm really excited to hear you feed back. For my first year engineering design course I'm asked to design a vehicle that will undergo a hairpin turn (180 degrees) around a 2 by 4 piece of wood. The vehicle must only harness the power of elastics or...
  4. H

    Need help with elastic/ballon vehicle project

    I need to design a a vehicle using only elastics and/or balloons as a source of energy, and the cost of the overall material must not exceed $20. Now, I am not asking you guys to do the work for me, but I need ideas because there is a catch. The vehicle must do a hairpin turn at a certain point...
  5. J

    Automotive Wind-Powered Vehicle: New Idea & Input Welcome

    Hi : I am new here but have been thinking about this for a while. I am attaching a drawing to hopefully explain my idea. I think a crossflow fan mounted at the rear of the vehicle's roof ( Accross the width of the car's roof ) , protruding partially above it and setup to allow air flow through...
  6. H

    Advanced Egg Drop Assignment - Create a Rocket & Vehicle for Success

    Having a little trouble with this latest advanced egg drop assignment. The main assignment has two parts - 1. Create a rocket that can reach a minimum height of 120 ft 2. Create a vehicle that can land with an egg for a passenger, and not have it crack. We also aren't allowed to use...
  7. 7

    How can I calculate forces on a vehicle frame?

    I am working on an SAE Baja vehicle for a competition as part of my coursework requirements. Right now I am trying to come up with a method to estimate the forces that the frame will be subjected to. I need help doing this. I know that the top speed will be 30mph and that the vehicle will weigh...
  8. S

    Automotive Changing Gears & Vehicle Speed: Exploring the System

    When you are in a particular gear (say 2nd) , you can vary the speed of vehicle. So what actually is varied in the system as you are not changing the gear, iis it the amount of charge or rpm of the engine is varied to increase speed in a particular gear? Also while changing gears, does the...
  9. S

    Calculating Kinetic Energy, Power & Resistive Force of an Amphibious Vehicle

    Homework Statement On Land, a 5000kg amphibious vehicle can accelerate from rest to 10 m/s in 25 sec. Find... a)Final Kinetic Energy? -250,000 b)Avg Power furnished by engine during acceleration? -10,000 c)If the same power is required to propel the vehicle through water at a...
  10. L

    Stopping distance and time of a vehicle

    Homework Statement The coefficient of friction is .48. The brakes are applied to a 1.05 x10^3 car traveling at 95km/hr. How far does the car move before it stops ? How long does it take for the car to stop? Homework Equations Fg = Fn, Fa= u x Fn, a=Fa/m, d=Vf^2-Vi^2/2a, t=d/v The...
  11. H

    Vehicle head light automation in automobiles

    Homework Statement Hi, I'm hari. I'm doing final yr B.E. I'm trying to do the headlight automation in automobiles. bt i dono by which device i can do it efficiently?? in my project i wan to sense the light and if the amount of light exceeds the particular value the vehicle wants to dim the...
  12. C

    Estimating vehicle horsepower and torque

    Given the following instantaneous parameters and constants... Known: d = air density = 1.24 Cr = rolling resistance coeffecient = 0.015 FA = frontal area = 1.48 Cd = drag coefficient = 0.29F G = gravity (mps2) = 9.80665 pi = 3.1415926 m = vehicle mass (Kg) = 1542 DL = drivetrain loss = .2 V...
  13. S

    Weight of a Vehicle: Can Chickens Affect It?

    Hey I was watching a TV show called QI on BBC and there was a question which went along the lines of: If you weight a lorry full of chickens. Then all the chickens jump off the ground at the same instant, in that lorry, the lorry doesn't loose any weight. Then it went on to say, if the lorry...
  14. S

    Automotive How to calculate weight of vehicle with weigh of each wheel?

    I'm doing a project regarding weight of vehicle. So we are taking reading of the weight of each of the wheel of the vehicle. So is there any formula to calculate the weigh of the vehicle that has 4 wheel. For Instance, wheel 1 = x kg and so on and so forth
  15. J

    Automotive Could a 100% hydraulic system as a vehicle prime mover work?

    Given: I understand that there would have to be the equivalent energy source to drive the pump. That I will look to later (my gut says the real issue), but for the purposes of this discussion, assume endless power from a source of electricity or hydraulic pressure/flow, and you have to build a...
  16. F

    Center of mass of a tank (military vehicle)

    Homework Statement a toy which have a shape of tank (military vehicle) has a platform of 192mm long, 140mm wide, weight of 2075grams. The canon is 239mm long, 50mm wide, and weight of 400grams. the canon is on top of the platform and being assembled 58mm from the front side of platform. where...
  17. L

    How to calculate the speed of a vehicle on impact

    A friend posed this question to me tonight. If a vehicle hits a stationary object and you know the distance traveled of the object, the weight of the object, the model of the vehicle and that conditions were dry on a tarmac road, is it possible to work out the speed of the vehicle on impact?
  18. P

    Derivation of Tail Swing large vehicle

    Homework Statement I am trying to derive a formula for figuring out the distance the rear of a large truck swings outward when turning a corner. Picture one of thos large moving trucks that you can rent, the back end over hangs the tires by a lot. Now picture it turning a corner and the rear...
  19. N

    How to model a system made by a vehicle suspension and tire?

    Hello everybody, Im trying to model a system made by a suspension and a tire for a vehicle simulator written in c#. I modeled both the suspension and the tire as a spring and a damper. So the model is formed by a spring and a damper in parallel (the suspension) in series with another spring...
  20. J

    Running a vehicle by burning aluminium?

    Apparently aluminium has the highest energy density per unit volume of any material. It can be smelted from ore or recycled oxide using green electricity. People have made batteries using aluminium but they have problems like getting gunked up with Aluminium hydroxide etc. How about burning...
  21. L

    Ground impact force of a vehicle rolling over

    Hi all, this is my first post on Physics forums so I apologise in advance if I have posted in the wrong section etc. This is something that I have been trying to figure out for nearly a week now! I have modeled a vehicle in Solidworks, specifically an external roll cage, and hope to conduct a...
  22. P

    Relation b/w slip ratio and drag force .Race car Vehicle Dynamics help

    Relation b/w slip ratio and drag force...Race car Vehicle Dynamics help... hii guyz... this is the first time i am posting on this forum and hope i ll get help... I was going through Race car vehicle dynamics by milkins and found a relation given on pg 64 which says... Drag...
  23. R

    Pressure distrubution inside accelerating vehicle

    Homework Statement We have an accelerating vehicle with constant a. Air inside it with mass m. It is kind of closed box of length L and front area S. First objetive: we want to derive the steady state pressure distribution inside the box. Second objetive: we want to derive the transient...
  24. G

    Calculate the acceleration of a vehicle

    Hi all, I am trying to create a vehicle simulation and get the vehicle to accelerate realistically by calculating the wheel speed in rad/sec. I know the torques and masses of a real world vehicle and I have video showing how fast it accelerates, so i want to recreate that. I have...
  25. K

    How is torque converted into propelling force on a vehicle?

    Hi all. I didn't get it cleared although i tried searching the internet. 1) Firstly, how does a vehicle gets off...i mean how the torque is converted into propelling force. I don't want to know the mechanism, gears etc...i want to know the physics... 2) Another question is that whether...
  26. S

    Question: What's the Smallest Possible Entry Vehicle for Mars?

    Hi everyone, I have a question - what's the smallest unmanned entry vehicle possible for descent from Martian orbit to the surface using an aeroshield and parachute? What kind of mass and dimensions would be feasible for a minimal payload? Do you think 10cm wide is too small? How about 5cm...
  27. P

    Exploring the Vector Diagram of a Turning Vehicle

    Recently I began to think somehin which has led to a lot more questions. If traveling on a straight line and I were to flip a coin a stock standard right handed triangle would be made, due to the coin going up and down. What would the vector diagram look like if the vehicle was to be...
  28. V

    Please help,A vehicle enters a test section of straight road at s =

    Please help, A vehicle enters a test section of straight road at s = 0 with a speed of 50 km/h. It then undergoes an acceleration which varies with displacement as shown. Determine the velocity v of the vehicle as it passes the position s = 0.30 km. Thanks!
  29. M

    MATLAB Matlab code used for vehicle dynamics

    Please help me recognize what is wrong with this professor supplied code... clear all options=odeset('events', @events_passing) [t,z]=ode45(@passing,[0,10],[0,50*88/60],options) plot(t,z) function [value,isterminal,direction]=events_passing(t,z) value=z(2)-88; isterminal=1...
  30. C

    Vehicle Lateral Force Effect on Tire Wear

    Hello, Just to check if anyone is able to help on this: As we generally know, lateral force on vehicle is also more commonly known as cornering force. In a situation where all external parameters are kept constant, i.e road temperature, road surface friction coefficient, same exact tire...
  31. T

    Calculate vehicle speed based on impact results?

    I hope I'm not asking too much. Other Driver hit Family Member. I want to calculate how fast OD was going. Desired results would be accurate to within 5 MPH or less. OD was in a 2003 Hyundai Elantra; googled curb weight around 2700. FM was in a 2005 Nissan Titan; googled curb weight...
  32. A

    Mousetrap vehicle (please reply today )

    Mousetrap vehicle (please reply today!) My first post :) Hi everyone! I'm in Science Olympiad working on mousetrap vehicle, but there's a problem... My lever arm is as long as I can make it that the vehicle can support so I can even attempt to go the entire ten meters but it goes down WAY too...
  33. N

    How would you test large vehicle for sinusoidal vibration

    Hey, could anyone explain how you would preform a sinusoidal test on large vehicle (weight>40 tons). I have a graph from sinusoidal data, but i don't understant how they were able to obtain this information because there is not a powerful enough testing device.
  34. L

    Calculating the Area considered to calculate Drag coefficient of a vehicle

    Hi ! First at all thanks for read, I'm new in the forum ... So the problem is, I would calculate the drag coeff of a car but in the coeff formula I would like to know which AREA is considered for this. drag coeff is given by = 2F / ρ(V^2) A Where : F is the drag force ρ is the mass...
  35. M

    How to back calculate vehicle speed after crash?

    I am struggling on solving a car crash question. Could anyone help me out? Statement: Car 1 (C1) weighs 3,000kg, C2 weighs 12,00kg. C1 was at rest and hit by C2 from side. Both vehicles moved 4m in 1 second before total rest. In other words, C1 was pushed away from side for 4m and C2...
  36. S

    Two questions: Initial velocity and vehicle stopping distance

    Hi All, It's been a looong time since I've had to use/apply basic physics but I'm hoping I've come to the right place for help. I am trying to help my brother-in-law with a speeding charge. First question The police allege he reached 100km/h within 38m of a corner. The first...
  37. D

    Force due to a submersible water pump to move an underwater vehicle

    Homework Statement I'm trying to find the force exerted by a 500 GPH (gallons per hour) submersible bilge pump. My team is designing a submersible vehicle for our university course. The vehicle is only supposed to move up and down in the vertical direction; basically it should just be able...
  38. Darth Frodo

    Can Two Batteries Power a Lunar Roving Vehicle Without Exceeding 9 Volts?

    I must design a lunar roving vehicle. One of the criteria is that the electric power cannot exceed 9 volts. My teacher said that is I have 2 batteries powering the front wheels separately then the power remains at 9 volts and not at 18 volts. Is this true? Thanks!
  39. C

    Finding Reliable Power for a Small Battle-Bot: A Scientist's Guide

    I'm building a Battle-Bot, and I need areliable power scorce. I have multiple AC motors, but will require a DC power scorce. Anyone know a good battery? I've already heard that a motercycle battery might be the way to go, I'm just looking for cheap alternatives. Also, please keep in mind that...
  40. M

    Finding the force of Tractive resistance on a vehicle

    Homework Statement I working on this for a high school thesis. I am trying to find the power required to move a 7100 lb vehicle over a variety of scenarios, but am having trouble calculating the force of tractive resistance. Homework Equations I found what i thought was a pretty...
  41. J

    Vehicle Moment of Inertia? How?

    I have been playing with several vehicle dynamics simulators for a while now, and many of them require vehicle inertial properties to create realistic simulations. There is very limited published data out there so I was wondering how could one calculate these properties experimentally...
  42. V

    LED Project in Vehicle: Blown Bulbs & Schematic Questions

    Hello all...I have a led project I have been doing in my vehicle...I have a Bose/Clarion radio that has blown incandescent bulbs. I have already done the instrument cluster & climate control with drop-in led's so I decided to try & fix the radio. My problem is that the radio has soldered in...
  43. D

    Head-on collision with a car equal to ones own vehicle

    i could use some help with a question: if one realizes that one is about to have a head on collision with a car equal to ones own vehicle, is it better for one to speed up on the theory that the harder i hit him the less it hurts me, or is it better to slam on brakes to lessen the impact? i...
  44. N

    Inductive Loop Detectors at Hight Vehicle Speed

    Hello Everyone I am currently studying the inductive loop detectors used in the traffic control department. I believe the data from the detectors is highly unreliable and noisy. A lot of research has been going on on the 'Fault detecting algorithm' and other means to improve the accuracy of...
  45. S

    Help me calculate skin friction drag on a vehicle please

    I'm trying to calculate skin friction drag on a truck so I can compare it to pressure drag. I can find the formula and typical coefficients for pressure drag easily enough but I've had a hard time finding it for skin friction. So far I've found this...
  46. S

    Thunderstorms and Cars: Is Your Vehicle at Risk?

    if a person is traveling in a car and there was thunderstorming rain, is there any possibility that thunderbolt hits the car?(i read that it is not going to hit the car)
  47. F

    Wind powered vehicle (Derivation)

    This thread is for MATH regarding wind powered vehicles. I don't want to see your opinion. I want facts and math. PERIOD This is my (attempted) derivation of what a wind powered car is capable of. I may have accidentally derived an infinite energy machine, so if someone would check my work...
  48. stevebd1

    NASA Nautilus-X - NASA's Multi-mission Space Exploration Vehicle Concept

    Some may already be aware of this but I discovered it for the first time today- http://www.spaceref.com/news/viewsr.html?pid=36068 http://en.wikipedia.org/wiki/Nautilus-X Looks like they may be testing the centrifuge on the ISS some time in 2013.
  49. H

    What is a roll center? (steady state cornering in a vehicle)

    I'm studying the chapter 'Steady State Cornering', from the book 'Fundamentals of Vehicle Dynamics' (by Gillespie). The concept of a 'roll center' seems to be very important here, especially after the 'roll axis' is defined (line joining the front and rear roll centers). But I don't...
  50. U

    Skidding Distance of a moving vehicle on asphalt gravel and grass

    I am recreating a car accident, an inelastic collision. The two vehicles after the collision have an initial velocity of 21.69m/s. They skid 6m across asphalt with coefficient of friction value of 0.72. They then pass through 0.5m of gravel with a coefficient of friction value of 0.4. Finally...
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