Is This Hypersonic?

[DimeUhDozen]

In this clip, a character moves fast enough to leave a trail of fire, which I'm told is Mach 5.

But is it really concrete evidence of Hypersonic speed?

 

[Propellus]

Definitely, moving fast enough to catch on fire to leave a trail is commonly used as Hypersonic

 

[KLOL506]

Got revised to being Mach 2.02 (Supersonic).

 

[Propellus]

Got revised to being Mach 2.02 (Supersonic).

Isn't that specifically for clothes as the requirements point out?

 

[KLOL506]

Isn't that specifically for clothes as the requirements point out?

I asked DontTalk, and he said no.

The problem with the 1666 m/s value is that it assumes 1500°C is to be reached due to that being cremation temperature for humans i.e. they assume you get so hot that a normal human would burn to ashes. I see no reason to assume the heat gets big enough for that, unless that actually happens to the character. Being hot enough to burn body hair and/or fat and oils in the body should already be enough to catch on fire.

 

[Propellus]

Then the justification for that calc in RFCF should be changed, because if what DT is saying is true, then this shouldn't necessarily involve having clothes to necessarily be caught on fire through sheer speed.

 

[It_is_i_wyatt]

why not just the speed to set your body itself on fire, specifically only clothes seems strange

 

[It_is_i_wyatt]

and since when has that calculation been a thing cause this is the first time im seeing it and until now everyone has been saying that ablation speed is mach 5

why not just the speed to set your body itself on fire, specifically only clothes seems strange

more specifically tile floor for this feat