Thread: RXT-X intake grate question
02-05-2008, 07:21 PM #1
RXT-X intake grate question
Maybe I was misunderstood the last time I asked this question, so let me rephrase.
Is the RXT-X's intake grate the same size/length/configuration as the current RXT Riva grate?
02-05-2008, 08:02 PM #2
02-05-2008, 08:03 PM #3
- Join Date
- Nov 2007
- Odessa, TX
02-05-2008, 08:22 PM #4
1 not quite
Last edited by VaRedneck; 02-05-2008 at 08:38 PM.
02-05-2008, 08:28 PM #5
Also the aft "scoop" on the grate is no longer a bevel, it is rounded like the leading edge of an aircraft wing... actually makes sense when you think about it.
BTW, the aft "scoop" reference pertains to the one built into the aft mounting plate, NOT the one found in the center of the grate
Last edited by 05Limited; 02-05-2008 at 08:34 PM.
02-05-2008, 08:33 PM #6
02-05-2008, 08:40 PM #7
Actually, water has always had a hard time deciding which way to go when you try and separate it with a sharp edge... turbulence is created. A rounded leading edge allows for a subtle "departing of the ways", so to speak... less turbulence, less drag, more water processed.
02-05-2008, 08:47 PM #8
Well....I know air and water don't always behave...have the same characteristics but....the SR-71, I don't believe has a rounded leading edge....anywhere...to include the jet intakes.
But all that aside...
Here's why I asked this topics question in the first place.
It's been said that removing the "wings" on the -X's intake is a 3mph improvement.
If that's the case with the X's...why isn't it the same with the older T's and P's?
02-05-2008, 09:02 PM #9
Hmmm, I've never seen an SR-71 in the water
I used to race sailboats, we always rounded the front of the rudders and sharpened the rear edge. You could actually hear the difference. Stock rudders with the edges all wrong cavitated and vibrated at high speeds. After rounding the front edges and sharpening the rear edge, they went smoothly thru the water.
02-05-2008, 09:13 PM #10
You bring up a good point about the Blackbird, but hydrodynamics is ten fold more "dynamic" than aerodynamics... and we are taking mach 4+ with the SR
But back to the grate. The Riva has what is probably the best compromise "scoop" to help process water without causing undue drag. The RXT/P-X grate has a HUGE scoop grate... most likely overkill for top speed buffs. And speaking of "Buffs", the B-52 does have a rounded leading edge... but then again it is subsonic
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