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The spacesuit in the falcon heavy test launch was a genuine test article. Assuming the suit performed nominally could a person have ridden the roadster into space?

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    $\begingroup$ The SpaceX spacesuit is of emergency kind to be used during the ascent and entry stages (like Sokol and ACES)- "They’re primarily needed in case there’s an emergency scenario during flight; if the spacecraft suddenly depressurizes, the suits will keep the astronauts alive until they can get to safety." - so they have limited time of work; and they are for usage inside the spaceship. Roadster is in outer space with extreme temperatures from Sun's light, the suit probably can't fully transfer it. $\endgroup$ – osgx Feb 7 '18 at 1:34
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    $\begingroup$ The dummy's position in the car was probably not ideal to handle the G-Forces of launch, but worked well as a PR stunt. $\endgroup$ – Dan Sorensen Feb 7 '18 at 3:31
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    $\begingroup$ To survive not only a suit is necessary. A life support system is needed with oxygen supply, removement of carbon dioxide and thermal control with cooling if necessary. To handle the G-forces a special seat may be needed with optimal orientation of the person to the direction of acceleration. The suit is not designed for an EVA, it is to be worn within a capsule. $\endgroup$ – Uwe Feb 7 '18 at 11:31
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    $\begingroup$ Probably the only thing that needs to be answered for this question is whether the seating arrangement and g force profile coupled together would have killed a passenger. I hope someone answers this, I’m curious as well.., $\endgroup$ – Adam Davis Feb 7 '18 at 11:58
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    $\begingroup$ Before John Paul Stapp started to research, it was believed that 18 g would be lethal. After that the limit was believed to be above 32 g. Stapp survived a test 46.6 g maximum and 25 g for 1.1 seconds. But not all humans would survive what Stapp did. $\endgroup$ – Uwe Feb 7 '18 at 13:14
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If the suit had been connected to a suitable life support system, the rider would very likely have been ok during the ascent, because:

  1. The car appeared undamaged.
  2. The suit appeared undamaged.
  3. Racecar drives routinely experience on the order of 5 Gs in similar seats, (albeit for seconds at a time, not minutes). Adding the car AOA to the seat inclination it looks like Starman is leaning back by maybe 60 degrees. Good though not ideal. A G-suit would be nice.
  4. The faring is only jettisoned when the residual aerodynamic forces are tiny.

Depending on the helmet, there could be an acoustic problem early on. The F9 user guide puts the sound level at (around) 130dB; the FH is likely louder...

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