[Ixnaum] says, "you are driving the 2005 Autoweeeebile. As the front bumber of your car detects the impact it releases your chair - which is in reality a sort of a comfy swing.
As you can probably imagine (with the help of the illustration below) the kinetic energy from the impact will propel the
swing forward. You will see the wall coming towards you except that you will go up at the same time in a familiar swing motion. .... in short it will make you go: Weeeeeeeeeee!!!!!!!!! .... while you spin round and round while your kinetic energy dissipates (you might make a few loops though)"
I like this [ixnaum's] idea a lot and I think it can be complemented with "instant supplemental mass via CPU" and applied to motorbikes as well. [ixnaum]'s idea reminds me of the Weeniemobile(tm) [link] in a good way. A Weeniemobile basically has a spherical fishtank on the end of a tube car. The advantage of a spherical fishtank windshield is there is more room for [ixnaum']s swing to do its lifesaving work. (also, it's futuristic looking).
if [ixnaum] could have any size or shape of windshield he or she likes they might prefer a full apex-of-swing (like top point on a playground swingset) space. I thinks that's unaerodynamic, but see the *note on duowindshields. They can increase the size of the front of the car some though. Cars might come in completely different shapes with ixnaum's safety swing.
Now that driverless cars are the thing (Tesla December 2020 scheduled software release release) perhaps driverless cars with face to face (limousine) seating will be popular and have particular variations on [ixnaum]'s safety swing.
Making It Even Safer:
Change the shape of acceleration from just a line, to a 3D shape that is more beneficial to people. Have airbag-explosive weights shootable onto the base of the swing change its mass profile and even 3D accelerating shape. Sort of like if you tossed sticky weights onto the bottom of a moving playground swing you could effect the arc of the swing and it's acceleration and velocity dynamically with computer control.
Also, what if you just loaded up one distal side of the bottom of a playground swing with additional dollop masses? You might get a twisting motion, a 3D acceleration graphical plot. As a safety feature at cars this could be beneficial as, depending on the angle of the accident there could be what I will call "torque forces" on the person's body, and putting twist on the seat-wing tethers/chains could reduce harm to people.
Seat belts already have some kind of @ roller-tensioners. Putting very fast computer controlled computer controlled roller tensioners at the flexible swing "chains" could be used to modulate the 3D motion of [ixnaum's] safety swing. Of course the idea says "swing" but I am sure it also means multisupport/multichain moveable platform (seat); this goes from the playground swing analogy, all the way to a a circle of springs at a trampoline topology, perhaps even with swing "chains" from the center of the base (balancing a plate on top of a pencil) doing things.
Genetic algorithm, Ok, so I like geneic algorithms, they make things 30-300% better. (I hear the amusement in the gallery). using a genetic algorithm to make and screen millions (billions) of variations on dollop weights, accident velocities, person centers of gravity is likely really beneficial. It is likely gentlest if best.
What id [ixnaum's swing had two-vehicle collision rserve capacity and decreasable mass dollops?"
The two part safety swing. The hard brake, the long skid, the actual collision; that's a different occurence that compares with a two car collision; somebody side contacts you, car spins around, and a subsequent completely non-lane "unexpected" collision occurs at a radically different angle than the swing has already compensated for. Computers could notice these things happening much faster than people, and ixnaum's safety swing could have reserve capacity to do a second shot of accelleration compensation. At shooting mass dollops, more mass dollops would be shot, and at different angles, and just possibly, with IOT (internet of things), already attached weghts on the seat would drop off, providing more Newtonian action laiitude.
At the seat during normal driving it would already have mass dollops on it, perhaps the genetic algorithm minimum mass (*MPG"-aware) to do soe good. If there were an accident from a novel angle, dollops could be added, and the IoT dollops on the seat could automatically detach in some computed pattern. The seat doesn't just mass up, it can mass-down 1%. I think some physicists and engineers would love calculating and making a computer simulation that does this.
Just how affordable can[ixnaum]'s invention be: compared with expensive airbags, chemical explosive nail guns exist [link] and are only $11 at alibaba.com [link]; this same technology could be used to put the velocity-adjusting dollops of matter on the base of the swing at high enough gun-to-swing dollop velocity to make a difference and reach the swing before the stop of swing head jerk, interior body collision, or with a really big front windshield, just apex of swing arc. One benefit of Nail gun mass dollop delivery is that you can deliver the supplemental mass dollops at angles that complement safest stopping by tossing adherent matter onto the swing seat base at 20 degrees, or 160 degrees angle, rather than just the 90 degrees of attach it quick angle.
[icnaum] says swing, but I kind of think perimeter spring/tether trampoline. The cheapest seat sized individual adult sized trampoline is just $3.50.
IoT bluetooth keyfobs are $1, I think they do internet.
So, all the parts add up to about $19-24, including the stuff, that is hyperaffordable like MEMS accelerometers, a CPU, wires, plastic, perimeter trampoline suggests an absence of slider rails.
[ixnaum]'s vehicle safety swing might work on electric and fuel motorbikes and motorcycles, particularly at the developing world. I perceive these wee a big source of 2020 accidents. The construction is a little different but if you think of a moveable seat voluntary exercise rowing fitness machine [link] ($5-10 on alibaba), the motorbike seat could dynamically slide under computer control in some kind of helpful complement way and "gradually decrease velocity" at the right direction of acceleration at a motorbike accident.
At a motorbike the idea of the trampoline like perimeter tethers ("swing chains" analogy) at the swing to make side-collisions less harmful comes up again. Also, rather than just think of it as a XY plane of acceleration *ker thunk forward and spinny sideways" to be compensated for you could do alll three directions, yaw pitch and roll, and even have the "nailgun safety swing" technology pushup or push down the seat. That works for cars and motorcycles.
I do not know if motorbike users ever wear seatbelts, but if they do, they can be pulled opposite to "fling off the bike" forces as well as pushed up.
*note on duowindshelds. The two windshield car: at one extreme is a motor vehicle with completely optimized aerodynamics, and rather than a windshield, a big video screen inside. A 2020 vehicle has an angled curved windshield. An intermediate form is a superaerodynamic windshield that covers an unaerodynamic smaller bubble windshiled, perhaps at a longer front hood length, with more drawing-out room for|:. raking angle.
The superaerodynamic transparent windshield would cover a [ixnaum] safety-swing friendly big vehicle front. (weinermobile bubble). making a duo windshield. Genetic algorithms would be used to find maximum transparency and maximum field of view at a duowindshield vehicle.
For industrial designers this would possibly be a huge treat. During 2020 there were all these Big Front trucks around my town, and the owners might have liked something 1-40% bigger for styling purposes. The MPG-friendly long hood duowindshield might be both possible and appealing to some people. Personally, I’m enthused about electric vehicles 'mileage, and feeling casual about petroleum, so a 1-3% mileage penalty to save 10-30% of car and motorbike accident lives sounds appealing.
Besides, Engineers and Halfbakers are already likely woking on better mileage as you read this.