That's ok. I can't think in Imperial so 40,000 cubic feet means nothing to me. No claustrophobia.
Humans are about 1/10th of a cubic meter, right, but they need airflow and cooling so give them 2/10 m^3, for a total of 200 m^3 for 1000 people. Or a cube ~6 m on a side, not that people lend themselves to being stacked in cubes and not that cubes are good shape for planes.
Are you assuming the passenger cubbies each have their own air supply? Because if not, you do need to pressurize the plane because even sleeping people need to breathe.
no subject
Humans are about 1/10th of a cubic meter, right, but they need airflow and cooling so give them 2/10 m^3, for a total of 200 m^3 for 1000 people. Or a cube ~6 m on a side, not that people lend themselves to being stacked in cubes and not that cubes are good shape for planes.
Are you assuming the passenger cubbies each have their own air supply? Because if not, you do need to pressurize the plane because even sleeping people need to breathe.