Suzuki Swift launch at roundabout in Rabien, Poland

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Crash tests, Pole Impacts
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MSI
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Suzuki Swift launch at roundabout in Rabien, Poland

Post by MSI »

Click here->To see latest Aug 2022 post on this topic

Great video of a vehicle launch in Poland posted to twitter and covered on autoblog site: Here's the video...we edited it for only the launch portion and added a slow motion:
You can also watch it from a playlist with many other recent crash videos: and here is a sequential still we created (crude but gives an idea of the path up, up, and away!
  • 2020-04-15_15-00-53.jpg
    2020-04-15_15-00-53.jpg (79.98 KiB) Viewed 1535 times
Here's the location in google maps: Might be time to give a simulation a try!
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MSI
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Re: Suzuki Swift launch at roundabout in Rabien, Poland

Post by MSI »

Here we did a crude sequential edit of the video simply chopping things to leave the vehicle as it rises:[/url]
  • Note: we could edit frames of the video to show only the vehicle and leave them static which would be much better...but the time required...
    Apr 16th i added a slow motion on end to this video

You can also watch it from a playlist with many other recent crash videos: and here's a still pic. Very crude but gives idea of the path
2020-04-15_16-22-16.jpg
2020-04-15_16-22-16.jpg (71.07 KiB) Viewed 1496 times
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MSI
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Re: Suzuki Swift launch at roundabout in Rabien, Poland

Post by MSI »

Some observations

First anyone who can get additional information on that launch i'd love to hear from.
I set up a quick and simple simulation and approximated the launch ramp (visually, so obviously having a direct measurement of the ramp would be nice!)
ramp.jpg
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A number of items came into focus.
  • 1) first they mention 200 feet to landing, is that from the take off point? or the end of circle?
    • Since at 200 feet unless it went to the right a lot there isn't a building to stop/slam into etc
      quick simulations demonstrate 200 feet can be achieved with that ramp with 65-75 mph or so launch speed but no consideration of landing location/orientation (details details details!)
    2) Where did it land? and what orientation?
    • if you look at take off it is with tail down (as noted by folks responding to this thread) wheres as a front wheel drive 60/40 % weight you'd think it would flatten or pitch forward UNLESS it is still on the way UP (meaning more speed) however that might mean 80-90+ speed and it would travel farther than 200 feet...
      UNLESS
      the interaction with the launch ramp displaced some bricks, took off more energy, etc so back of vehicle sees different ramp than front end.
      We have a good idea of the path from the video and overhead pics (see pic below note to left of 3 signs in center area so good pre-launch path!)
    Lastly anyone nearby the crash site can they tell the specific location of the camera?
    • Some responded that probably on the light post but to pass so close it would mean the vehicle veered to right (and so that may be so as mentioned earlier landing area probably to right of path and then landing orientation what was it? any ideas?)
Very interesting launch investigation and would love to do more detailed simulation but missing some required pieces of the puzzle.

Brian
Here's the launch followed by 2 slow motion versions to enebale observing the vehicle reaction to the launch
path.jpg
path.jpg (123.44 KiB) Viewed 1381 times
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MSI
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Re: Suzuki Swift launch at roundabout in Rabien, Poland

Post by MSI »

Got some additional information from Zyg Gorski and his brother Ed Gora
First the local TV station:
TVn24 report.png
TVn24 report.png (1.17 MiB) Viewed 1367 times
TVn24 report. comparepng.png
TVn24 report. comparepng.png (954.29 KiB) Viewed 1365 times
From which i got the landing area and then used Google Earth to map the path out
google earth flyover.png
google earth flyover.png (766.13 KiB) Viewed 1367 times
and then the actual path.
vehicle path.png
vehicle path.png (688.05 KiB) Viewed 1367 times
vehicle path2.png
vehicle path2.png (491.83 KiB) Viewed 1367 times
vehicle path3.png
vehicle path3.png (524.61 KiB) Viewed 1367 times
will see about simulating this in the near future!
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MSI
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Re: Suzuki Swift launch at roundabout in Rabien, Poland

Post by MSI »

Here's a quick first pass simulation at 80 MPH of the launch and travel to landing impact into a building per recent updates.
Tried some locations, and different focal lengths for the roadside camera but couldn't match. Will revisit later.
NOTE:This is a DRAFT:
  • We only spend an hour or so preparing these visual displays of our msmac3D simulation.
    We set these up when we find something about the crash interesting.
    We don't have the measurements and other information to perform a full reconstruction.
    We don't spend additional time to add the houses, background, etc.
    This is simply a quick demonstration of some of the 3D modeling capabilities of our msmac3D simulation and how it can help with understanding 'what happened' with a vehicle and crash dynamics.
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MSI
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Re: Suzuki Swift launch at roundabout in Rabien, Poland

Post by MSI »

Added description of DRAFT for the quick demonstration of the launch
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MSI
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Re: Suzuki Swift launch at roundabout in Rabien, Poland

Post by MSI »

Another video posted up comparing 55 and 80 mph
with rough approximations for the launch and vehicle
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Re: Suzuki Swift launch at roundabout in Rabien, Poland

Post by MSI »

Today a NAPARS on Facebook Post about the Suzuki launch.
I decided to crank back up the DRAFT msmac3D reconstruction and run a comparison of 55 MPH and 80 MPH.
This is a rough approximations for the launch and vehicle but I'd expect a higher speed than simple trajectory launch probably since the vehicle is offset from the 'full ramp' (so only a partial ramp) and also loses some speed on the takeoff (note dirt displaced and sprayed in the video) and the vehicle has to land 5 feet off the ground 109 feet from the takeoff location.
All rough approximations and all just for fun!
Total approximate Path
overall path.png
overall path.png (309.35 KiB) Viewed 236 times
The path into the roudabout:
path.jpg
path.jpg (123.44 KiB) Viewed 284 times
The ramp
ramp.jpg
ramp.jpg (6.84 KiB) Viewed 284 times
The landing
landing.png
landing.png (440.81 KiB) Viewed 283 times
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