Re: Active Engine Stage Avoidance (Re: Falcon Sir Lauch-A-Lot?)

In message <LkENh.17662$Jl.5007@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Craig Fink <WeBeGood@xxxxxxxxx> wrote:

richard schumacher wrote:

In article <JFFyIp.D99@xxxxxxxxxxxxx>,
henry@xxxxxxxxxxxxx (Henry Spencer) wrote:

Radiation-cooled nozzles often glow quite impressively. The first-stage
nozzles on the old Arianes glowed from takeoff on.

Ah, thanks.

Is it troubling that the heating on the Falcon nozzle appeared uneven?

Yeah, glowing hot spots are in the flow compression, cold spots are in a
shadow expansion. I thought it didn't look bad, but what does normal glow
look like?

Looking at the hotspots I did wonder if it was a bit of deformation from
the separation bump, it did look like it could be where the interstage
had bumped and slid.

Anthony

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