@VDK said in Is oxygen (mask) implemented?:
@VIPER-0 said in Is oxygen (mask) implemented?:
But if I breathe 100% pure oxygen I’ll have a little more tolerance to GS than a pilot who only breathes air or mixed oxygen-air. It is not like this ?
I don’t think it work like that… the oxigen percentage has more to do with your levels of nitrogen in your blood stream than with G-loc.
At higher flight levels, if you have a cockpit depressurization, the nitrogen in your blood will start to “boil”. Oxigen at 100% you eliminate your residual nitrogen to prevent this.
Yes, but no. Not on jet fighter, I mean, it is not the purpose of 100% O².
Not enough time for this. To eliminate nitrogen from blood and replace it by O², one have to breath 100% pure O² during 20 to 40min (depending on cabin ALT). If, at any time, we take one single breath of normal (mixed) air, the whole denitro process is ruined and must be restarted from the beginning.
This is however true for Tactical Air Transport for VERY high altitude dropping (>FL160), divers, and space flights.
100%O² en suppress at high cabin altitude is to attempt to reestablish the partial pressure (PPO²) and blood’s saturation.
@VIPER-0 said in Is oxygen (mask) implemented?:
@VDK said in Is oxygen (mask) implemented?:
@VIPER-0 said in Is oxygen (mask) implemented?:
But if I breathe 100% pure oxygen I’ll have a little more tolerance to GS than a pilot who only breathes air or mixed oxygen-air. It is not like this ?
I don’t think it work like that… the oxigen percentage has more to do with your levels of nitrogen in your blood stream than with G-loc.
At higher flight levels, if you have a cockpit depressurization, the nitrogen in your blood will start to “boil”. Oxigen at 100% you eliminate your residual nitrogen to prevent this.
As I understand it, the higher the level of oxygen in the blood, the greater the tolerance to Gs
It is minimal. Under high G load, the issue is not the % of O² in the blood, it is the vector of this O² (the blood) that can’t reach the brain.
I’ll have to retrieve the IRBA studies about it, but, from memory AGSM saves about 3-4Gs.
G suite saves about 1G.
At low level, the mask provides normal air (no enriched O²) … O² enrichment comes at higher than FL100 (cabin alt) and EMER provides suppressed 100% O².
There is no automatic 100% O² supplies by regulator under Gs, only the G suite is supplied by normal air under G loads.