What is Vehicles: Definition and 92 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. G

    Optimizing Front Wheel Losses in Rear-Wheel Steered Vehicles

    I want to know a little about rear-wheel steering mechanisms. Basically, my interest is in the relative losses (due to slip angles) on the front wheels of these vehicle...whether they would be expected to be more, and if yes how? In the end, i want to design a steering mechanism for a 3-wheel...
  2. J

    Calculating Speed and Time Between Two Vehicles Heading to Mars

    Homework Statement You are in a vehicle heading towards Mars at constant speed. A superspeeder is going at constant speed 0.9c relative to you. When the superspeeder pases you, both times start at 0. "At the point when you measure the superspeeder has traveled 1.4 x 10^7 m past you, what...
  3. edward

    Google Street View Camera Vehicles Collected WI FI data

    Google claims it was totally inadvertent that they collected wi fi data using their street view camera vehicles. Personally I can't bring myself to believe that. http://www.pcmag.com/article2/0,2817,2363835,00.asp This was first revealed May but for some reason is just now hitting the...
  4. A

    Engineering I want to work with electric vehicles. Chemist or Electrical Engineer?

    I love Electric motors and vehicles, and i want to fully understand how electricity works and how is generated, i see that batteries have a lot of chemistry and the wires also have a lot of chemistry. So if i want to fully undertand how this things work should l go electrical engineering or...
  5. B

    Using golf ball dimples to decrease vaccuum drag on motor vehicles and aircraft.

    A golf ball without dimples experiences more drag because the deflection area of the airflow around the ball is larger which means that the pressure drop behind the golf ball is also higher. The increased drop in pressure creates a suction vacuum behind the golf ball which pulls it back and...
  6. C

    Could Hybrid Vehicles That Use An Engine to Power an Electric Motor Be Created?

    So with most of the hybrid vehicles around, they use a conventional engine and transmission with an electric motor to take over at certain points, and the engine recharges the electric motor. But could a hybrid be made that uses say an ordianry gasoline or diesel engine that directly powers an...
  7. Q

    I read that vehicles over the last 20 years have increased operating temps by

    roughly 20-40 degrees! Thats seems like a fairly large increase to me. The reason was to benefit and better utilize fuel injection systems, however, the steel is now potentially at weaker temperatures. What would most likely be the ideal operating temperature for engine blocks such as, steel...
  8. H

    Hybrid Powertrain Solutions for Niche Vehicles

    hi i am doing a project on the Hybrid Powertrain Solutions for Niche Vehicles any suggestion on how to start this project it involves designing as well as optimizing. how can we calculate the power requirement of the vehicle and how to optimize the packing of the vehicle. which software...
  9. S

    Remember the debate about downwind vehicles

    We've had a couple of heated debates here about whether one could build a wind powered vehicle that would go directly downwind faster than the wind. So we built one... First run: http://www.vimeo.com/10476453 Second run: http://www.vimeo.com/10477373 Last run: http://www.vimeo.com/10476216
  10. L

    How to calculate power required by vehicles

    I am trying to compare electric power vs gas power. How do you calculate the power required by gas vehicles, say to go 50miles at constant speed.
  11. C

    Calculating Drunk Driver's Speed in a Collision

    Homework Statement A drunk driver strikes a parked car. During the collision the cars become entangled and skip to a stop together. The drunk driver's car has a total mass of 880 kg, and the parked car has a total mass of 804 kg. If the cars slide 39.5 m before coming to rest, how fast was...
  12. K

    Question regarding motion of vehicles

    [b]1. Question: You are driving your car (take the direction to be positive) at 20m/s. A van is following you, also at 20m/s. When you see a fog bank ahead of you, you hit the brakes (take this to be the time t=0). The driver of the van sees your brake lights and applies her brakes 1 second...
  13. V

    Propelling Vehicles with Light: A 15-Year-Old's Idea

    hey, I'm 15 years old, and I'm still going to high school:) But Physics has been my main subject of study for a few years now(since i was 7 to be precise) and i understand many complex things that are above my age category such as Newton's laws and vectors, projectile motions, electronic...
  14. D

    Joining two orbiting space vehicles

    I'm curious to know how the engineers of NASA determine how to join two moving, or orbiting objects in space. What type of mathematics helps them determine their trajectories? Thanks!
  15. K

    Permanent magnet alternators on Japanese vehicles?

    I am incorporating a solar chimney in my house build in Thailand, this will have a venturi to create the suction for removing warm air from the building and I intend to use this high air speed area to generate electricity. As air speed will be dependant on the Sun and not the more fickle wind...
  16. F

    Front/Rear Wheels Turning: Pros & Cons

    why don't car wheels turn from the rear as opposed from the front? surely this is the same as traditional cars nowadays but with a different sensation in turning right? what I would like to know is what are the pros and cons in each circumstance? Also as a plus I know there are cars...
  17. L

    Aerodynamics of large vehicles

    Homework Statement My physics teacher has set me this homework where I have to find out how large vehicles(lorries,trains,etc.) have been modified to be more aerodynamic. please could you just give me some links or pointers to help me finish this task. 2. The attempt at a solution...
  18. wolram

    What is the history of roads specifically designed for motor vehicles?

    I have tried to find out when the first road surfaced specifically for motor vehicles was, and where, obviously motor traffic used existing surfaced roads with horse drawn traffic in mind up to some time, so when did consideration for motor vehicles start?
  19. ceptimus

    Optimizing Travel Time for Three Brothers Exhibiting Their Vehicles

    Three brothers decide to exhibit their two vehicles at a vintage car and motorcycle show twelve miles from their house. They jointly own a single-seat car and a very early single-seat motorcycle. They are discussing how to get themselves and their vehicles to the show. "Our car goes at 60mph...
  20. P

    Electric vehicles don't add up

    How do you get through to people with poor technical/scientific knowledge that battery vehicles have considerable snags particularly the long charging times?? I keep being told that future cars will be charged in 5 minutes.
  21. M

    News Electric vehicles to pay for detroit bailout?

    An article by the boss of Tesla motors asking that the $25Bn promised in september for advanced technology transport research doesn't just get switched to paying for Detroit's corporate jets. http://www.teslamotors.com/blog2/?p=66 I imagine some people here might have an opinion.
  22. F

    Force of Vehicles Traveling at 13.4112m/s

    I am trying to figure out force of each vehicle if both traveling at 13.4112m/s one weighing 65kg and the other 75kg many thanks in return forgot to add they both have a crumple zone 0f .5m each
  23. O

    Effects of banked angle on vehicles

    i've been trying to get the exact definition of a banked angle but so far, I've gotten nothing so i would like somebody to please tell me the definition and explain it effect on the performance of motor vehicles
  24. S

    Harnessing Energy from Moving Vehicles: Exploring Possibilities

    Original Post " Using electro gravity tiles, there is an emerging technology that can generate electricity from moving vehicles. If we continue to populate the highways and roads, we might as well extract energy from their motion. How cool is that? " Reply "Originally Posted by Ivan...
  25. N

    Hydrogen/Electrolysis Boosters on Vehicles

    What is going on with these things? There are many people around the internet, and local now, that claim these hydrogen/electrolysis boosters do increase your fuel efficiency (mpg) by at least 30 percent. I've seen these devices working first hand, and for some reason they do seem to be...
  26. O

    Electro Gravity Tiles - generating electricity from moving vehicles

    Using electro gravity tiles, there is an emerging technology that can generate electricity from moving vehicles. If we continue to populate the highways and roads, we might as well extract energy from their motion. How cool is that? :tongue:
  27. mheslep

    Shorter Stopping Distance for ultralight vehicles?

    The concept of ultralight vehicles is intended to allow greater fuel efficiencies in part by the use of composite structures to reduce mass by 2 or 3x. In several discussions of these vehicles I have seen and heard mention of the supposed additional safety benefit of shorter stopping...
  28. D

    Microwaves interfering with vehicles electronics

    i am interested in weather or not a salvaged magnatron from a microwave oven will be enough to interfer with electronics if it were to be housed in an aluminum box with a tube on the side that the magnatronwould be emitting from to (direct the emissions)?
  29. wolram

    Preparing for Summer Floods: Should We Buy Amphibious Vehicles?

    The summer floods are back and with rain forcast for the next three days things are going to get interesting, may be we should be buying amphibious vehicles.
  30. Ivan Seeking

    ZIL Screws You: Russian Heavy-Duty Transport Vehicles

    http://jalopnik.com/cars/siberian-screwjob/in-russia-zil-screws-you-273231.php The US made one of these but I couldn't find any file footage. The videos are slow to load but do work eventually.
  31. P

    Weight of vehicles when stopping

    Homework Statement Is it possible that a vehicle weighing 2000 kg and a vehicle weighing 13000 kg can both use the same skid to stop formula?? Does the difference in weight not come into account? Homework Equations Where : S = speed in km/h µ = .75 d = skid distance S = 15.9...
  32. Ivan Seeking

    Cool DC motors for electric vehicles

    There seems to be quite a dramatic price range for high power DC motors, and I was thrilled to find this link while searching for solutions for a work application. The prices blew me away when compared to those found at the standard motor suppliers...
  33. D H

    Corporate Overreach: EVA to 'Activities with Extra Vehicles'!

    From another thread: Dang you Shawn, now I need to clean my computer screen. This thread is about practices that would make Dilbert's pointy-haired boss turn red. I'll start: In a former job, corporate management decided our group needed more oversight. All technical papers had to be...
  34. edward

    News Mine Resistant Ambush Protected vehicles

    Bush has vetoed the Iraq pull out schedule bill, no big surprise, but what is the plan for Iraq? It appears that we are in this for the foreseeable future judging by the vehicles the Marines have been ordering. http://www.nationaldefensemagazine.org/issues/2007/April/Surgeinvehicle.htm...
  35. B

    Ultracapacitor/Supercapacitor for electric vehicles

    Hello All, We are trying to make an electric vehicle and we want to use ultracapasitor. Is there anyone who has experiences and what is differences these capasitors from others?
  36. F

    How can we improve ELV management in Abu Dhabi?

    End-of-life vehicles or ELVs As part of my communication course, we (4 team members and myself) are supposed to select a topic, study it and some certain aspect of it for 18 weeks (one whole semester) and come up with a recommendation report and finally a multimedia presentation to persuade...
  37. U

    Final velocity of both vehicles

    a 2000 kg truck is traveling south, a sports car is traveling west. they become entangled in a collision and leave a skid mark that is 20 meters long in a direction 14 degrees to the west of the direction of travel of the truck. Coefficient of sliding friction between tire and road is 0.6. what...
  38. C

    Solving a Problem: Combining Two Vehicles Masses

    I can't figure out this problem. A 1000kg car traveling east at 3m/sec collides with and sticks to a vehicle traveling due west at 2m/sec. Immediately after the collision, the vehicular combination is moving due west at 1m/sec. the mass of the second vhicle is ? kg. How do I set this up?
  39. M

    RF Detection for Radio-Controlled Vehicles: Need Advice

    I'm looking to make/buy an RF(radio frequency) to detect and display the level of an incoming RF signal. This is going to be used on a radio controlled vehicle. Any suggestions and info would be greatly appreciated.
  40. Moonbear

    Are Cars Too Sound-Proofed for Drivers to Hear Emergency Vehicles?

    The favorite radio station thread reminded me of an experience while renting an SUV. I got an SUV as a rental vehicle last year for a visit to my sister (it came in handy for hauling around relatives and getting stuff to a park for my nephew's birthday). At one point, I had the radio on...
  41. S

    Streamflow and lift for Micro Aerial Vehicles?

    What are the equations used to determine the streamflow and lift for Micro Aerial Vehicles? What are the problems with MAVs?
  42. Astronuc

    What Is the Largest Payload Ever Launched by an Atlas V Rocket?

    http://www.everything-science.com/index.php?option=com_content&task=view&id=116&Itemid=2
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