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Airbags are designed to deploy only when they might be needed to prevent serious injury. In order for airbags to be effective they must deploy early in a crash; in a frontal crash this typically occurs within the first 50 milliseconds (0.05 seconds). A vehicle's airbag control module relies on feedback from crash sensors to predict whether an event is severe enough to warrant an airbag deployment.
Frontal airbags: Frontal airbags are designed to inflate in moderate to severe frontal crashes. Among airbags with advanced features that include a safety belt sensor, there are different inflation thresholds depending on whether people are using their safety belts. One threshold used by airbag designers is "must deploy" which includes a situation such as an impact into a rigid wall of 10-12 mph for unbelted occupants. The "must deploy" threshold is slightly higher - about 16 mph - for belted occupants because the belts alone are likely to provide adequate protection up to these moderate speeds. Frontal airbags may deploy to help protect occupants in side impacts if there is sufficient forward deceleration during the crash. For example, if a vehicle is moving forward at the time of a side impact, frontal airbags can help prevent serious injuries.
Advanced airbags compliant with government crash performance standards have been required in all passenger vehicles effective with model year 2007. Advanced airbags are designed to suppress deployment if weight sensors in the seat detect that a front-seat passenger is small or in a child safety seat. Advanced airbags also can deploy at a lower energy level or pressure when passengers are small or out of position, or if the crash is of very low severity.
Side airbags: Because of the small space between an occupant and the side of the vehicle, side airbags must deploy very quickly to cushion occupants from intruding vehicles or objects. Some airbags typically deploy within the first 10-20 milliseconds of a side crash. "Must deploy" thresholds can be as low as 8 mph for narrow object crashes (e.g., trees and poles) and 18 mph for the more distributed side crashes (vehicle-to-vehicle crashes). Several auto manufacturers deploy the side airbags in frontal crashes to help control occupant movement during the rebound phase of a crash. Some curtain side airbags may stay inflated longer to protect occupants in rollover crashes. Allowing the airbags to remain inflated or triggering their deployment during a rollover can help prevent full or partial ejection of occupants.
Curtorsey: Institute for Highway Safety
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What do air particles do to cause air resistances?
When a parachutist is falling with his parachute open, he is hitting air molecules. Imagine he is going at 1 cm/s, he is hitting 1 cubic cm of air molecules per second. If he goes at 2 cm/s, then he is hitting 2 cubic cm of air per second. This increases the air resistance. So as his speed increases, so does the amount of cubic cm of air molecules.
What is another word for In the open air?
in the open air
What would happen to satellite if it lost its speed?
It would eventually fall into the Earth's atmosphere and burn up on reentry However, it is unlikely that it would lose speed without hitting another object. It will not slow down because there is no air, therefore, no air resistance.
What is an air sock?
An air sock is another name for a windsock, a conical open-ended tube designed to indicate wind direction and relative wind speed.
Speed to open the air bag?
It depends on what you crash into , a solid concrete wall with no " give " or another vehicle , the collision has to have enough " force " to require the air bag(s) to inflate
Why is air compressed when an object is traveling faster than the speed of sound?
The supersonic object is hitting air molecules faster than they can get out of the way, so they pile up.
Can you get anurisms from air hitting skin?
No
Light incident upon a pane of glass shows down in passing through the glass. Does it emerge at a slower speed or at its initial speed?
The speed of light depends on the electrical characteristics of whatever medium it happens to be in at that instant. It has one speed in vacuum, another speed in air, another in glass, another in water, and yet another speed in jello. When passing from a more-optically-dense medium to one where its speed is higher, it doesn't need a stomp on the gas to 'accelerate' to the higher speed.
How do aircraft measure their speed?
Aircraft measure their speed using pitot tubes, which are sensors that detect the pressure of air as the aircraft moves through it. This pressure is translated into airspeed, which is displayed on the aircraft's instruments and used by the pilot to control the aircraft.
Most meteors that fall into the Earth's atmosphere burn up before reaching the ground. Why is this?
They are hitting air molecules at a high speed and breaking them apart, which produces a lot of heat.
most meteors that fall into the Earth's atmosphere burn up before reaching the ground. Why is this?
They are hitting air molecules at a high speed and breaking them apart, which produces a lot of heat.
What are the symptoms of an cooled Condenser when the air leaving the condenser is hitting a barrier and recirculating?
What are the symptoms of an cooled Condenser when the air leaving the condenser is hitting a barrier and recirculating?
