Porsche Boxer goes airborne and crashing into the SECOND floor of a real estate office... 1

[charliealphabravo]

From this photo I'd agree the roof/rear hit first, probably heading downwards and backwards with the rear striking the building corner (image not displaying for some reason).

[URL unfurl="true"]https://res.cloudinary.com/engineering-com/image/upload/v1573529758/tips/NJ_Porche_photo_avrvcn.bmp[/url]

 

[3DDave]

Those clips were into a very solid barrier, not a relatively weak brick wall. Hitting flat roof to the wall would not cause the car to be obliterated.

 

[XR250]

I was involved in a job where a Chevy Tahoe basically drove right thru a tract house from a dead stop. The house offered little in the way of any resistance.
I imagine if the Boxster was traveling at the reported velocity, it would have achieved more penetration.

 

[DM61850]

3dDave,

I just don't think it was going that fast. The car is going to slow down from traction with the road, going up into the air and turning kinect energy into potential or rotational, or colliding with stuff. If the car hit the building at 10 meters, that would shave off around 30 mph. The tire marks make it look like the car was sliding so there wasn't much traction at that point. If the car is air born, there is nothing slowing it down. I am not an expert but I don't see anything slowing it down substantially if it was going 160 mph. I think it just hit the curb and cartwheeled into the building and at nothing close to 100 mph.

 

[IRstuff]

63 mph initial -- 23 mph vertical to hit 23 ft max height with 15 ft at impact and 59 mph to span 150 ft. Loss in velocity from horizontal skid and loss from hitting whatever launched the car into the air, so 100 mph sounds reasonable. Hang time of 1.7 seconds.

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[MacGyverS2000]

1/4-mile speed for the Boxster is 105mph... from a standstill. Taking a corner at 30mph+ and stomping on it, the Boxster wouldn't have any problem hitting the 120mph+ speed bandied about after a full mile.

Dan - Owner

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[charliealphabravo]

Knowing a reasonable launch angle would help. I wonder if there is test data of vehicles launching off an F curb.

Edit: All this discussion should be academic as the ACM records speed prior to one or more events. However, according to a colleague, Porche does not provide access to the data.

 

[azcats]

That NBC video said something about a ditch and launch from that. There appears to be some sort of depression before the parking lot that could have been used as a launching ramp. The street view isn't terribly helpful.

 

[msquared48]

I think they have assumed too much! Cars can’t fly!

The building just goes up and down!


Mike McCann, PE, SE (WA, HI)

 

[Spartan5]

IRstuff, for what it's worth, I've paced it off at about 200' +/- That's based off of the pic of the skid mark, lining up the perspective in street view, and ID'ing the stripe for a landmark.

https://www.google.com/maps/@39.9950664,-74.171104,129a,35y,45t/data=!3m1!1e3

It looks like the eastbound lanes are elevated above the westbound lanes. It probably would have hopped a little crossing the median so it was probably floating before it hit the F curb rear wheels first and launched. In this high-res pic you can see one of the rear wheels is missing and the other is sheered in half.