Hello,
I know this has been covered here before, but I didn't find quite what I needed in those threads.
My goal is to find enough information to thoroughly dismiss the claims of ignorant truthers. I know radar, video, and eyewitness debunks their claims. Truthers don't care about any of that so I wanted to dig a little farther than that. I had one truther tell me the the radar data was faked.:jaw-dropp
I'm sure everyone has witnessed truthers comparing a cooling duct "assembly" to a cooling duct. They make the claim that they are independent of one another.
On Apr. 19 1982 United Technology filed US PATENT 4,435,123. This is very close to the time the 7R4D was certified.
Here is what it says under "background art".
The turbine disk and blades have been cooled by such devices as that shown in U.S. Pat. to Brown et al No. 3,768,921 in which tubes with nozzles thereon are supported in the wall of the cooling air chamber and are positioned to blow air tangentially against the turbine disk. This structure has a plurality of parts that must be assembled to create the finished structure. Further the discharge of air from each nozzle necessarily impinges upon the adjacent tubes and the result is turbulence that detrimentally affects the cooling function and thus requires a greater amount of cooling air. It is desirable that the cooling air flow smoothly from the nozzles against the turbine disk. It is also desirable that the cooling structure by which cooling air is supplied to the nozzle be as simple and made of as few parts as possible.
Doesn't that mean the cooling duct assembly would have a plurality of parts? I think it does.
Truthers say the 7R4D should only have the cooling duct with part #801123.
When I look up the cooling duct with part #801123 on Aviall( a Boeing company) that exact part # is listed in the general parts of the JT9D section.
I can't post links. So you will have to search for it.
Wouldn't it makes sense that two engines from the same family share the same parts?
And then I do the same thing on NTE Aviation's website.
When I select engine parts and scroll down to the JT9D section it says this.
"Search our parts inventory sourced from several JT9D-7R4 disassembled engines."
Ok. I click the JT9D link and it's just the general section for the JT9D like Aviall. I scroll down to part # 801123. It lists JT8/JT9 as the MFG.
Again, I can't post links.
Hmm.. wouldn't that suggest they are compatible with a JT9D?
Finally, I have an Illustrated Parts Catalog for a JT9D in pdf. It's rather tough to navigate. Any experts want to take look at it and see if the cooling duct assembly is applicable for a 7R4D?
I still have more digging to do, but that is all I have for now. Thanks for any help anyone can provide.
I know this has been covered here before, but I didn't find quite what I needed in those threads.
My goal is to find enough information to thoroughly dismiss the claims of ignorant truthers. I know radar, video, and eyewitness debunks their claims. Truthers don't care about any of that so I wanted to dig a little farther than that. I had one truther tell me the the radar data was faked.:jaw-dropp
I'm sure everyone has witnessed truthers comparing a cooling duct "assembly" to a cooling duct. They make the claim that they are independent of one another.
On Apr. 19 1982 United Technology filed US PATENT 4,435,123. This is very close to the time the 7R4D was certified.
Here is what it says under "background art".
The turbine disk and blades have been cooled by such devices as that shown in U.S. Pat. to Brown et al No. 3,768,921 in which tubes with nozzles thereon are supported in the wall of the cooling air chamber and are positioned to blow air tangentially against the turbine disk. This structure has a plurality of parts that must be assembled to create the finished structure. Further the discharge of air from each nozzle necessarily impinges upon the adjacent tubes and the result is turbulence that detrimentally affects the cooling function and thus requires a greater amount of cooling air. It is desirable that the cooling air flow smoothly from the nozzles against the turbine disk. It is also desirable that the cooling structure by which cooling air is supplied to the nozzle be as simple and made of as few parts as possible.
Doesn't that mean the cooling duct assembly would have a plurality of parts? I think it does.
Truthers say the 7R4D should only have the cooling duct with part #801123.
When I look up the cooling duct with part #801123 on Aviall( a Boeing company) that exact part # is listed in the general parts of the JT9D section.
I can't post links. So you will have to search for it.
Wouldn't it makes sense that two engines from the same family share the same parts?
And then I do the same thing on NTE Aviation's website.
When I select engine parts and scroll down to the JT9D section it says this.
"Search our parts inventory sourced from several JT9D-7R4 disassembled engines."
Ok. I click the JT9D link and it's just the general section for the JT9D like Aviall. I scroll down to part # 801123. It lists JT8/JT9 as the MFG.
Again, I can't post links.
Hmm.. wouldn't that suggest they are compatible with a JT9D?
Finally, I have an Illustrated Parts Catalog for a JT9D in pdf. It's rather tough to navigate. Any experts want to take look at it and see if the cooling duct assembly is applicable for a 7R4D?
I still have more digging to do, but that is all I have for now. Thanks for any help anyone can provide.
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