Hello and welcome to episode 295 of AvTalk. I am Ian Petchnik here as always with

Jason Rabinowitz on a Tuesday. On a Tuesday. Not even because I'm traveling. I'm not traveling until

Friday. For once, I don't know if this has ever happened before. We have moved the recording

date of this podcast due to something you are doing. What are you doing? And why am I so jealous of it?

So here's what's happening.

And by the time the podcast comes out, it will have happened and we'll talk more about

what it was like on the next episode.

But I'm traveling to the lovely city of Norfolk, Virginia, tomorrow.

So on Wednesday, and on Thursday, I'm going to join

the GE Aerospace 747 Propulsion Lab, which is a highly modified 747 400 that began life

with Japan Airlines and replaced GE's old 747 100, which was retired in 2017 as the oldest

747 still active. So I'll be on board the 747 with GE engineers. Well, NASA's C20A,

or Gulfstream 3 flies behind us pointing LiDAR at our exhaust to study

contrails formation and persistence. So this is all part of NASA's Codex experiment, which is designed

to understand how contrails are formed, how and why some persist

and others dissipate quickly, and what can be done about either engine technology, where

aircraft are flying, a combination of the both to reduce contrail formation and contrail persistence

during flight.

So that will be all day Thursday.

If you want to have a look on the blog, we've got a link in the show notes that kind

of details what aircraft are involved and how they are interacting.

And then we'll absolutely talk more about this next week when we do next

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