if you're seatbelted,how can airbag decellerate you?

On Mar 31, 8:11 am, "beerismygas" wrote:
> if you are wearing your seatbelt and crash, i am finding it hard to
> understand how driver and passenger airbags will improve
> survivability.
>
> if properly seatbelted you should be held in your seat and would not
> move far forward enough to contact the airbag anyway, so the airbag
> will not be able to decellerate you, right?
>
> perhaps i am misunderstanding this, maybe someone who knows someone
> who had a deployment can elaborate?
>
> thx

Air bags can help in preventing neck injurys by keeping your head and
neck from being thrown forward.

If you've seen any of the crash test videos you'll notice that even
though the test dummy is fully buckled up the head and neck are thrown
forward less with bag deployment.


Eric
 >> Stay informed about: if you're seatbelted,how can airbag decellerate you? 

Sharon Cooke wrote:
>
>
> beerismygas wrote:
>> if you are wearing your seatbelt and crash, i am finding it hard to
>> understand how driver and passenger airbags will improve
>> survivability.
>>
>> if properly seatbelted you should be held in your seat and would not
>> move far forward enough to contact the airbag anyway, so the airbag
>> will not be able to decellerate you, right?
>>
>> perhaps i am misunderstanding this, maybe someone who knows someone
>> who had a deployment can elaborate?
>>
>> thx
>>
>
> SRS air bags really don't do much for anyone that heeds the Law of
> Motion for Inertia and BUCKLES UP EVERY SINGLE TIME. For the 15-20% of
> people that still DON'T buckle up while driving/riding in a motor
> vehicle, the SRS bags MAY save them from their own stupidity in the
> event of a collision, or it could kill/maim them some other way, even
> WITHOUT having a collision, thru accidental deployment.

don't the new f150s shut the bag off if the belt isn't in?
 >> Stay informed about: if you're seatbelted,how can airbag decellerate you? 

thanks for all your feedback and especially this last post which gives
me new insight.

I just got an idea which could be used to replace airbags or
suppliment them:
air-seatbelts!

they would be seatbelts with an inflatable (via controlled explosive)
section going through them. on impact the explosion would create high
pressure gasses which would inflate the belt very quickly. the belt
would have tiny holes to let the pressure out reducing the terminal
speed even further.

what do you think?
 >> Stay informed about: if you're seatbelted,how can airbag decellerate you? 

SRS, air bags are designed to 'supplement' the protection provided by a
properly fastened shoulder belt. If the shoulder portion of the
combination belt that is not properly tensioned across the shoulder, it will
allow slack in the seat belt, in a collision. After a collision occurs, a
'second' collision is when ones hips strike the belt and the upper torso
strikes the deployed SRS. It is the purpose of each, along with the
decoration effect of the crumble zones, to reduce the terminal speed of the
'third' collision when one organs strike one skeleton. If the terminal
speed of those collision is too high even a properly belted passenger,
inside of a vehicle of which the passenger compartment was not intruded
upon, will die.

Fifteen, of my thirty years as an automotive design engineer, was involved
with crumple zone and vehicle crashes. Pictures on our wall showed a Town
Car that ran into a wall at 50 MPH. The car was flattened almost all the
way to the firewall. The crumple zones did their job and the engine and
tranny went under the body. Inside were five passengers, still properly
belted and without a mark on their body, all of whom died instantly in the
'third' collision .

I never ride without my belt properly tightened and never will I drive or
ride in a small vehicle just to save a relative few hundred dollars a year.

mike


"beerismygas" wrote in message

> if you are wearing your seatbelt and crash, i am finding it hard to
> understand how driver and passenger airbags will improve
> survivability.
>
> if properly seatbelted you should be held in your seat and would not
> move far forward enough to contact the airbag anyway, so the airbag
> will not be able to decellerate you, right?
>
> perhaps i am misunderstanding this, maybe someone who knows someone
> who had a deployment can elaborate?
>
> thx
>
 >> Stay informed about: if you're seatbelted,how can airbag decellerate you? 

On Apr 1, 3:28 pm, "beerismygas" wrote:
> thanks for all your feedback and especially this last post which gives
> me new insight.
>
> I just got an idea which could be used to replace airbags or
> suppliment them:
> air-seatbelts!
>
> they would be seatbelts with an inflatable (via controlled explosive)
> section going through them. on impact the explosion would create high
> pressure gasses which would inflate the belt very quickly. the belt
> would have tiny holes to let the pressure out reducing the terminal
> speed even further.
>
> what do you think?

Seat belts keep your torso in place. Air bags can keep your head and
face on your torso, and protect them if the steering wheel or other
things start to attack you.

Some small aircraft manufacturers are starting to put airbag seatbelts
in place, since there is no place for a regular one..
 >> Stay informed about: if you're seatbelted,how can airbag decellerate you? 

beerismygas wrote:
> thanks for all your feedback and especially this last post which gives
> me new insight.
>
> I just got an idea which could be used to replace airbags or
> suppliment them:
> air-seatbelts!
>
> they would be seatbelts with an inflatable (via controlled explosive)
> section going through them. on impact the explosion would create high
> pressure gasses which would inflate the belt very quickly. the belt
> would have tiny holes to let the pressure out reducing the terminal
> speed even further.
>
> what do you think?
>
>
>
Mercedes does something similar now; when the SRS igniter is triggered,
any “comfort” slack in the safety harness is removed, taking only a
small fraction of a second to do so.
 >> Stay informed about: if you're seatbelted,how can airbag decellerate you? 

Plenty of videos showing what happens to a crash test dummy when they
hit an airbag while wearing a seatbelt right here: http://AutoSmash.com


On Mar 31, 11:36 am, audio... RemoveThis @bellsouth.net wrote:
> On Mar 31, 8:11 am, "beerismygas" wrote:
>
> > if you are wearing your seatbelt and crash, i am finding it hard to
> > understand how driver and passenger airbags will improve
> > survivability.
>
> > if properly seatbelted you should be held in your seat and would not
> > move far forward enough to contact the airbag anyway, so the airbag
> > will not be able to decellerate you, right?
>
> > perhaps i am misunderstanding this, maybe someone who knows someone
> > who had a deployment can elaborate?
>
> > thx
>
> Air bags can help in preventing neck injurys by keeping your head and
> neck from being thrown forward.
>
> If you've seen any of thecrash testvideos you'll notice that even
> though the test dummy is fully buckled up the head and neck are thrown
> forward less with bag deployment.
>
> Eric
 >> Stay informed about: if you're seatbelted,how can airbag decellerate you? 

This message is not archived
 >> Stay informed about: if you're seatbelted,how can airbag decellerate you? 

In alt.autos.ford Sharon Cooke wrote:
> beerismygas wrote:
> > they would be seatbelts with an inflatable (via controlled explosive)

> Mercedes does something similar now; when the SRS igniter is triggered,
> any comfort slack in the safety harness is removed, taking only a
> small fraction of a second to do so.

That's not just a high end solution. My Honda Civic has those and so does
my Ford Escape. Mercedes premiered the system in 1981, according to
wikipedia.

The system tightens via explosive, and then releases at a prescribed rate
to relieve the deceleration of the body.

--
---
Clarence A Dold - Hidden Valley Lake, CA, USA GPS: 38.8,-122.5
 >> Stay informed about: if you're seatbelted,how can airbag decellerate you?