I believe (could be wrong) that the Russian Soyuz launch pads use a Nitrogen
deluge system
On 22 Apr 2023, 04:21, at 04:21, roxanna Mason <rocketmaster.ken@xxxxxxxxx>
wrote:
Yes Henry, correct, I saw a photo of a 7.5K:bF 'subscale' F-1 engine
with
it's exhaust blasting at a test deflector to empirically design the
Saturn
5 deflector.
They coated it with layers of volcanic rock. I like the Russians
deflector
too, it's also passive in nature needing no cooling water except for
maybe
some smaller amounts around the top area of the pad. I like passive
things,
fewer things to fail.
Ken
On Fri, Apr 21, 2023 at 8:52 AM Henry Spencer <hspencer@xxxxxxxxxxxxx>
wrote:
On Thu, 20 Apr 2023, roxanna Mason wrote:deflector was
It's interesting to note that the aforementioned Saturn 5
highpassive in nature, not a steel plate with 1000's of holes flowing
betweenpressure water.
So simple it's painful.
Not an entirely trivial design, though -- for example, the angle
its sides changed at least once during development, to make sure thata
detached shock didn't form above it. (It's an aerodynamic surface in
supersonic flow...)
Henry