Wheeled Vehicle
Wheeled Vehicle is a physics based build event in which students must construct a vehicle powered only by a non-metallic elastic solid device. The participants must be able to adjust the vehicle to travel a specified distance around an obstacle as chosen by the event supervisor as fast and as accurately as possible. It was last run in 2015 before being run in 2023.
wheeled vehicle
Prior to the event, competitors must design, build, and test a vehicle which is only powered by a non-metallic, elastic material that can store potential energy. This potential energy is stored (for example stretching a rubber band) and then released to make the vehicle move from the kinetic energy.
At the competition, the event supervisor will announce a track distance between 8 and 11 meters after impound is complete. The exact distance will be in different intervals for different levels of competition (see below). Competitors will be given a total time of 8 minutes to set up their vehicle and perform two runs. The vehicle must be triggered by actuating a release mechanism with a pencil supplied by the event supervisor.
Braking systems are built differently by each team to accommodate their vehicle. There are several systems that can easily be adapted into a device. (Scrambler, Mousetrap Vehicle, and many other Science Olympiad events include similar braking concepts.)
One of the mechanisms commonly used on a vehicle is the threaded rod and wingnut design. It has been used by many competitors in multiple vehicle events and is reliable. The details of how to build and implement it can be decided by teams themselves, but the general idea is the same. A threaded rod, a wingnut, and something to hold the wingnut are needed. It is important to know how many revolutions of the wheel it will take for the vehicle to reach the target distance. This can be done by dividing the target distance by the wheel circumference, showing the number of turns and axle length required.
Goggles are required for the competition. Also, any tools or computing device needed to assist in calculating distance/time are permitted. However, note that the rules prohibit the use of any electronic devices except calculators (e.g. laser pointers are not allowed). The vehicle must be impounded before competition starts, and the event supervisor may not announce the target distance until the last vehicle is impounded. The competition will be on a relatively smooth, level track (often a corridor or gym). For the two runs, there will be a total of 8 minutes of preparation time. However, once time expires, you will not be able to continue to conduct a second (or first) run. Vehicles are to be triggered only when the event supervisor has indicated one may do so. Do not chase after the vehicle; this will result in a Competition Violation. Wait until an event supervisor signals that the vehicle can be retrieved.
Train the Active Army, Army Reserve, and National Guard enlisted soldiers to perform field level maintenance on automotive wheeled vehicles; Receives fundamentals and principles of troubleshooting and performing maintenance on: brakes, chassis, cooling, diesel engines, electrical, fuel, hydraulic, power train, steering and suspension systems. Receives instruction on publications, maintenance discipline, maintenance forms, shop safety, use and care of hand/power tools, common maintenance subjects, vehicle operations along with preventive maintenance checks and services (PMCS), Test Measurement and Diagnostic Equipment (TMDE), physical fitness, and use of Soldier's Manual and Warrior Tasks and Battle Drills (WTBD).
For some motorcycle riders, three wheels are even better than two. But before you hit the road on three wheels, you'll likely want to put certain protections in place. Whether you opt for a converted motorcycle, a factory-built three-wheeler, or an autocycle, insurance may help protect you and your vehicle.
There are a variety of three-wheeled vehicles that may be used on the roads. Some three-wheeled motorcycles, known as trikes, are built from ordinary motorcycles using conversion kits. Factory-built three-wheeled motorcycles are also being designed by manufacturers. These vehicles may have one wheel in front and two in the back, or the opposite, sometimes referred to as a "reverse trike."
Even if they have three wheels, however, trikes and three-wheeled motorcycles are still treated as motorcycles by the National Highway Traffic Safety Administration (NHTSA), a Federal authority responsible for motor vehicle safety.
The NHTSA considers any motor vehicle with a seat or saddle and no more than three wheels to be a motorcycle. As a result, insurers generally issue motorcycle insurance to cover three-wheeled motorcycles and converted trikes.
Meanwhile, an autocycle is a type of three-wheeled vehicle that shares some features with cars, according to the American Association of Motor Vehicle Administrators (AAMVA). For example, autocycles typically have a steering wheel, and the operator sits in a seat similar to a car seat. In some autocycles, a passenger may be able to sit beside the driver. Some autocycles are open-air vehicles, like a motorcycle; others have an enclosed cabin, like a car.
Like trikes and three-wheeled motorcycles, the NHTSA treats an autocycle as a motorcycle. Insurers typically issue motorcycle insurance policies for open-air autocycles. However, in some states, enclosed autocycles may be covered by insurers under an auto insurance policy.
The III says that in most states, motorcycle riders must have liability insurance, which may help protect you if you're found at fault for an accident that results in injuries to another person or damage to someone else's property. Depending on your state's laws, you may therefore be required to have liability insurance for your three-wheeled vehicle.
Choosing the protections that are right for you and your vehicle can give you peace of mind, just in case the unexpected occurs. With coverage for your three-wheeled vehicle in place, you can then focus on enjoying your travels on the open road.
The Army is currently studying ways to modernize its fleet of tactical wheeled vehicles (TWV). TWVs range from light utility vehicles, such as Humvees, to heavy equipment transporters, and support a variety of combat operations by transporting soldiers and materiel such as munitions, water, and fuel.
To help Army leaders make some of those critical logistical decisions, Chief of Army Transportation Corps Col. Beth Behn said Wednesday that her team must deliver an updated tactical wheeled vehicle strategy to leadership around the November 2023 timeframe.
The High Mobility Multipurpose Wheeled Vehicle (HMMWV; colloquial: Humvee) is a family of light, four-wheel drive, military trucks and utility vehicles produced by AM General.[10] It has largely supplanted the roles previously performed by the original jeep, and others such as the Vietnam War-era M151 jeep, the M561 "Gama Goat", their M718A1 and M792 ambulance versions, the Commercial Utility Cargo Vehicle, and other light trucks. Primarily used by the United States military, it is also used by numerous other countries and organizations and even in civilian adaptations. The Humvee saw widespread use in the Gulf War of 1991, where it navigated the treacherous desert terrain; this usage helped to inspire civilian Hummer versions. The vehicle's original unarmored design was later seen to be inadequate. The vehicle was found to be particularly vulnerable to improvised explosive devices in the Iraq War. The U.S. hastily up-armored select models and replaced front-line units with the MRAP. The U.S. military sought to replace the vehicle in front-line service under the Joint Light Tactical Vehicle (JLTV) program. In 2015 the Oshkosh L-ATV was selected for production.
In 1979, the U.S. Army drafted final specifications for a High Mobility Multipurpose Wheeled Vehicle (HMMWV), which was to replace all the tactical vehicles in the 1/4-ton to 5/4-ton range,[12] namely the M151 quarter-ton jeeps, M561 Gama Goats, and the CUCVs, as one uniform "jack-of-all-trades" light tactical vehicle series, to better perform the roles of the impractically mixed fleet of outdated existing vehicles.[5][unreliable source?] The specification called for excellent on and off-road performance, the ability to carry a large payload, and improved survivability against indirect fire.[13] Compared to the jeep, it was larger and had a much wider track, with a 16 in (410 mm) ground clearance, double that of most sport-utility vehicles. The new truck was to climb a 60 percent incline and traverse a 40 percent slope. The air intake was to be mounted flush on top of the right fender (or to be raised on a stovepipe to roof level to ford) 5 ft (1.5 m) of water[14] and electronics waterproofed to drive through 2.5 ft (0.76 m) of water were specified. The radiator was to be mounted high, sloping over the engine on a forward-hinged hood.
Out of 61 companies that showed interest, only three submitted prototypes.[13] In July 1979, AM General, a subsidiary of American Motors Corporation, began preliminary design work. Less than a year later, the prototype was in testing. Chrysler Defense and Teledyne Continental also produced competing designs. In June 1981, the Army awarded AM General a contract for the development of several more prototype vehicles to be delivered to the government for another series of tests. The original M998 A0 series had a curb weight of 5,200 lb (2,400 kg), a payload of 2,500 lb (1,100 kg), a 6.2 L (380 cu in) V8 diesel engine and 6.3 L gasoline, and a three-speed automatic transmission.
The three companies were chosen to design and build eleven HMMWV prototypes; the vehicles were subjected to over 600,000 miles in trials which included off-road courses in desert and arctic conditions. AM General was awarded an initial contract in 1983 for 2,334 vehicles, the first batch of a five-year contract that would see 55,000 vehicles delivered to the U.S. military, including 39,000 vehicles for the Army; 72,000 vehicles had been delivered to the U.S. and foreign customers by the Persian Gulf War of 1991, and 100,000 had been delivered by the Humvee's 10th anniversary in 1995.[5] Ft. Lewis, Washington, and the 2nd Battalion, 47th Infantry, 9th Infantry Division was the testing unit to employ HMMWV in the new concept of a motorized division. Yakima Training Center in Yakima, Washington, was the main testing grounds for HMMWVs from 1985 through December 1991, when the motorized concept was abandoned and the division inactivated. 041b061a72