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• Bicycle gearing
  ...bikes can achieve transmission efficiencies of over 99% (nearly all the [[energy]] put in at the pedals ends up at the wheel). [[Biomechanical]] factors how ...t specify other aspects of the system. ''[[Gear inches]]'' and ''metres of development'' are related measures that include the diameter of the rear wheel. ''Gain
  24 KB (3,509 words) - 23:29, 3 July 2009
• Aerodynamics
  ...ound the flow field, equations for the conservation of mass, momentum, and energy can be defined and used to solve for the properties. The use of aerodynami ...isplay at the Virginia Air and Space Center. Wind tunnels were key in the development and validation of the laws of aerodynamics.]]In 1889, [[Charles Renard]], a
  23 KB (3,573 words) - 21:59, 17 August 2009
• Road bicycle racing
  ...another rider and thus making it possible to save a considerable amount of energy. A group that breaks away (break) from the main field, bunch or [[peloton]] ...in his [[slipstream]]. Riding in a peloton can save as much as 40% of the energy employed in forward motion when compared to riding in the wind. Some teams
  15 KB (2,357 words) - 10:33, 27 September 2009
• Automobile
  ...an engine that used a mixture of [[hydrogen]] and [[oxygen]] to generate [[energy]]. The design was not very successful, as was the case with the British inv ...gine ({{US patent|549160}}). This patent did more to hinder than encourage development of autos in the [[United States]]. Steam, electric, and gasoline powered au
  31 KB (4,648 words) - 15:58, 10 August 2009
• Terra Modena
  Under development. Ready for 2017. The fastest electric car with 500 Km autonomy. In Europe a 25’ race needs 6 € of energy (in Us much less!) against of 65 € of a F. 3. Not mentioning that a F.3 d
  6 KB (940 words) - 09:05, 12 November 2016
• SI
  === Future development === * [[Electrical energy|Electric energy]] is often billed in [[watt-hour|kilowatt-hours]] instead of megajoules.
  19 KB (2,827 words) - 11:05, 5 March 2017
• Seat belt
  ...h of webbing. Both three-point and lap-and-sash belts help spread out the energy of the moving body in a collision over the chest, pelvis, and shoulders. Un ...s been migrated from drivers to other road users. This has influenced the development of [[risk compensation]] theory, which says that drivers adjust their behav
  7 KB (1,222 words) - 10:44, 8 October 2009
• Turbocharger
  ...engine]]s considerably advantageous—and was the original reason for development of the device. ...bocharger also has a [[turbine]] that powers the compressor using wasted [[energy]] from the [[exhaust]] gases. Compressor and turbine have the same shaft, s
  19 KB (3,049 words) - 13:22, 8 October 2009
• Hybrid vehicles
  A '''hybrid vehicle''' (HV) is a vehicle using an on-board [[rechargeable energy storage system]] (RESS) and a fuelled power source for vehicle [[propulsion ...yota Prius]], prolong the charge on their batteries by capturing [[kinetic energy]] via [[regenerative braking]]. As well, when cruising or in other situatio
  64 KB (9,873 words) - 22:35, 14 June 2009
• Pagani Huayra
  ...wing the suspensions to work at their best while incorporating an advanced energy absorbing crash structure, ready to protect the occupants in the unlikely e ...gine with the second pump only activated when necessary, thus reducing the energy required to run the fuel pumps and eliminates the waste of excessive fuel b
  17 KB (2,787 words) - 18:29, 10 March 2011
• Spark plug
  ...shape of the ribs function to improve the insulator and prevent electrical energy from leaking from the terminal to the metal case along the side of the insu ...smaller electrode also absorbs less heat from the spark and initial flame energy. At one point, Firestone marketed plugs with polonium in the tip, under the
  23 KB (3,923 words) - 22:48, 11 June 2009
• Pistonless rotary engine
  ...t many similar concepts have been proposed and are under various stages of development. There are countless other examples of rotary engines varying in rotor desi ...le does not move, that of the rotor does. The angular momentum and kinetic energy of motion of the rotor also both vary, producing more vibration, see [[engi
  10 KB (1,627 words) - 08:32, 2 October 2009
• Tire manufacturing
  ...tance and traction in addition to environmental resistance. Tread compound development is an exercise in compromise, as hard compounds have long wear characterist ...d, and the mixing terminated upon reaching a specified total amount of mix energy imparted to the batch.
  14 KB (2,137 words) - 09:56, 12 December 2009
• Formula One engines
  BMW went straight forward with its engine development. The P81, used during the 2001 season, was able to hit 17,810 rpm. Unfortun For 2007 the engine specification has been frozen to keep development costs down. The engines which were used in the 2006 Japanese Grand Prix wil
  22 KB (3,308 words) - 13:51, 19 March 2009
• Diesel engine
  ...n]] (usually atmospheric air), rather than a separate source of ignition [[energy]] (such as a [[spark plug]]), as is the case in the [[gasoline engine]]. ...in raising efficiency, but [[diesel fuel]] contains approximately 30% more energy per unit volume than [[gasoline]], and this is the crucial factor.
  33 KB (5,114 words) - 23:11, 23 September 2009
• Italy
  ...velopment Index|HDI]]''' ([[2003]]) || 0.934 ([[List of countries by Human Development Index|18th]]) – <font color="#313931">high</font> Italy has shaped the cultural and social development of the whole Mediterranean area, deeply influencing [[Culture of Europe|Eur
  24 KB (3,378 words) - 22:17, 1 April 2009
• Wankel engine
  ...racted from the same volume of fuel, as the exhaust has to expend time and energy "catching up" to the rotor before it can accomplish any work. {{citation n After years of development, [[Mazda]]'s first [[Mazda Wankel engine|Wankel engined]] car was the 1967
  23 KB (3,604 words) - 09:49, 2 August 2009
• Bicycle brake systems
  The [[1870s]] saw the development of the "[[safety bicycle]]" which was roughly the bicycle we would recogniz ...the disadvantage of rim heating, because the brake converts [[kinetic]] [[energy]] into heat, which increases the temperature of the rim (the brake caliper
  26 KB (4,406 words) - 08:46, 12 September 2009
• 24 Hours of Daytona
  In 1972, due to the energy crisis, the race was shortened to 6 hours, while for 1974 the race was canc ...s and the car's simple aerodynamics reduce the often astronomical costs of development and testing.
  28 KB (3,787 words) - 17:35, 11 May 2009

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