Such poorly constructed and myopic arguments.
Cosmic radiation is but one single measure of the fatigue and health implications of close to twenty four hour tours of duty operating sunrise.
Of Equal importance.
Time of Departure?
Number of time zones crossed?
Length of flight?
Time flown at night in circadian lows?
A simplistic fool would look at one sector that SQ does and assume what QF propose is similar and thus acceptable.
The route SQ does to Newark is only one out of about 30 destinations of which many are Short Haul.
SQ carry 2 Captains and 2 FOs.
They also fly very few ULR trips each roster. I’ve heard it suggested it’s one a roster or less on average.
Sunrise will fly the longest sectors ever flown and exclusively. There is no like for like scientific data on this.
Nor flying this type of flying repeatedly over many years with multiple trips per roster.
It will be extremely bad for pilot health and any attempts at longevity.
Expect Qantas incentives such as Chairman’s lounge or first class flights to pay or bribe it to happen.
The half science or complete lack of it Is now apparent.
The result will be window dressed and reverse engineered to say it’s fine.
Twenty three hours all night to London and Eleven time zones crossed. Next trip Twenty three hours the completely opposite direction to New York.
An executive on 8 million dollars a year will tell you it’s ok.
Of course he/she/it will do it only once a year in first class, and tell you it’s acceptable to fly three a roster till age 65.
Will also be interesting to see if Boeing or Airbus bother for the 10-12 QF will order which will replace the A380 from 2022/23.