Some of you know that two years ago I asked people at NOAA to look
into the potential ozone damage from up to a million Skylon flights
per year. There is no point in solving the carbon and energy problem
with power satellites if the cost is a billion cases of skin cancer.
They put a lot of effort into modeling the problem, writing a paper
and getting it through peer review. I really appreciate what they
did.
The paper is now available online at
http://onlinelibrary.wiley.com/doi/10.1002/2016EF000399/full
Click on the PDF symbol next to the journal title.
Short answer: the damage to the ozone is not a showstopper.
Keith