Showing posts with the label V

Is this how you played Skyrim?

It's how everyone plays Skyrim,

v-2 rocket drawing

V-2 rocket engine drawing showing the different stages of the air missile.

Engine Oil and its viscosity

Engine Oil and its viscosity                                                        For satisfactory lubrication of the engine the oil should possess some functional properties of which viscosity of oil is one of the most important properties, as it brings out the oil’s capacity to lubricate. Viscosity is the measure of oil’s resistance to flow. An oil’s viscosity is identified by its SAE’s (Society for Automotive Engineer’s) number. The thinner and oil, lower its number, e.g. SAE 10 W. The numerical relates to viscosity at particular temperature and the alphabet ‘W’, indicates the oil’s suitability for colder temperature. With the viscosity index improver, the viscosity increses at higher temperature and at lower temperature it does not increase significantly, thus achieving optimum viscosity at lower and higher temperature. Such oils are called multigrade oils, for instance ‘20 W40’ shows thinness at low temperature and thickness at higher temperature. However, there are other servi

Vehicle Steady State Directional Stability

Vehicle Steady State Directional Stability 27.5.1. Cornering Properties to Tyres Cornering Force and Slip Angle When the wheels are in motion tyres are subjected to vertical as well as side (lateral) forces due to road camber, side winds, weight transfer and centrifugal force caused while negotiating a curved paths and steering the vehicle on turns. When a lateral force acts on a road wheel and tyre, a reaction that is a resisting force acts, between the tyres tread contact patch and road surface and opposes any sideway motion. This opposing resisting force is known as the cornering force (Fig. 27.33), whose magnitude is equal to that of lateral force. The increase in this cornering force is roughly proportion to the increase in lateral force until the tyre looses grip with the ground. Fig. 27.33. Tyre trade contact patch distortion when subjected to side force. Beyond this point the proportionality does not hold good with further increase in lateral force so that tyre breakaway is lik