"ttyymmnn" (ttyymmnn)
10/25/2018 at 11:44 • Filed to: None
0
35|
"ttyymmnn" (ttyymmnn)
10/25/2018 at 11:44 • Filed to: None | 0
| 35 |
Is it possible to search the comments of a post? Probably about six weeks ago (or maybe more), I had a discussion with an Oppo about turboprop engines. This person, don’t remember who, talked about the Allison turboprop on the C-130, and even posted a diagram. I wrote something in that thread that I really want to find. I have searched all morning trying various things, but have had no luck. I also don’t remember what post it was in, and it may not have been my own. I have gone backwards in my Dashboard but, once it got to the middle of September, it suddenly jumped to March.
Any ideas? Bueller?
Update: !!!error: Indecipherable SUB-paragraph formatting!!! . facw got me going backwards in my own comment history, and I finally tracked it down. Thanks to everybody!
OPPOsaurus WRX
> ttyymmnn
10/25/2018 at 11:00 |
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haha you have high expectations for this place. Just searching for a post is hard enough.
Daily Drives a Dragon - One Last Lap
> ttyymmnn
10/25/2018 at 11:00 |
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I don’t think you can because that would make too much sense now wouldn’t it.
TheRealBicycleBuck
> ttyymmnn
10/25/2018 at 11:00 |
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Try Google with this: “site: kinja.com C-130 ttyymmnn”
Substitute/add key words as necessary.
HammerheadFistpunch
> ttyymmnn
10/25/2018 at 11:03 |
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yeah, best of luck. In kinja search is garbage and google crawling of kinja isn’t great either.
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ttyymmnn
> OPPOsaurus WRX
10/25/2018 at 11:05 |
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Google does a better job than the built-in Kinja search
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ttyymmnn
> Daily Drives a Dragon - One Last Lap
10/25/2018 at 11:05 |
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I’m trying to be positive.
facw
> ttyymmnn
10/25/2018 at 11:06 |
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Nope, Kinja search is garbage, and Google generally doesn’t seem to index the comments.
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ttyymmnn
> TheRealBicycleBuck
10/25/2018 at 11:07 |
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It looks like that only finds my original content, not comments. I don’t remember what post I made those comments in.
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ttyymmnn
> HammerheadFistpunch
10/25/2018 at 11:07 |
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Google does a better job than Kinja search.
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HammerheadFistpunch
> ttyymmnn
10/25/2018 at 11:08 |
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by far, but its not great either.
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ttyymmnn
> facw
10/25/2018 at 11:08 |
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I never use Kinja search, only Google. It would be fine if I could go backwards far enough in my Dashboard. I think it stops right about where I need to be.
Turbineguy: Nom de Zoom
> ttyymmnn
10/25/2018 at 11:12 |
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Was there a question? I was an aero turbine analyst for ten years, and used to
eat/sleep/breath turbines.
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facw
> ttyymmnn
10/25/2018 at 11:15 |
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I mean you post and discussion history will go back very far, it’s just the problem of finding where you want to be on them: https://kinja.com/ttyymmnn/discussions?startTime=1338595287984
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TheRealBicycleBuck
> ttyymmnn
10/25/2018 at 11:21 |
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I think you’re right. It looks like Google isn’t crawling the comments.
I tried searching “site: https://kinja.com/ttyymmnn/discussions C-130 ttyymmnn” and got nothing.
I shortened it down to just your discussions and it linked to your discussions page back in 2015.
Perhaps it’s because of the time code? Who knows?
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ttyymmnn
> Turbineguy: Nom de Zoom
10/25/2018 at 11:22 |
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Sort of. I am going to be doing a piece about the early turboprop airliners. I am going to open the piece with a very brief discussion of the history of the turboprop, about why turboprops are/were more efficient than the early turbojets. I’ve gotten some info great from f86sabre about it, and I’ve got a pretty good idea where I want to go. Basically, with the gearing and the large propeller, a turboprop can get more bite out of the air at slower engine speeds, and are happier at lower altitudes, on shorter routes, and flying from shorter fields. Which is why the C-130 and A400M are still a thing in the modern jet age. Conversely, low-bypass turbojets are happier spinning at high speed at high altitudes and gobble up the gas . I had written something similar to that in the comment thread I can’t find , and liked what I wrote. Once I get that first paragraph written, the rest of the piece will be a snap.
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ttyymmnn
> TheRealBicycleBuck
10/25/2018 at 11:22 |
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Who knows, indeed. Thanks for trying.
punkgoose17
> ttyymmnn
10/25/2018 at 11:23 |
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You are pretty much reliant on tags for kinja search. I there is a mention here:
https://oppositelock.kinja.com/why-yes-you-can-loop-a-c-130-1827723531
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ttyymmnn
> facw
10/25/2018 at 11:24 |
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It would be nice if the time stamp made some sense. That link starts me out more than six years ago. It would be great if I could start from the other end!
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ttyymmnn
> punkgoose17
10/25/2018 at 11:25 |
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Thanks, but I already went through that post. I think it’s a simple matter of Google not indexing comments, only posts.
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facw
> ttyymmnn
10/25/2018 at 11:27 |
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The base link (on the left) takes you to the most recent (I just used an old one to show that you can go back a long time) : https://kinja.com/ttyymmnn/discussions
https://kinja.com/ttyymmnn/posts
You can just page through, or if you have a specific time in mind, you can fiddle with that timestamp to get to about the right place.
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ttyymmnn
> facw
10/25/2018 at 11:28 |
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It would probably be faster just to rewrite what I wrote. But thanks. I’ll give it a try.
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ttyymmnn
> facw
10/25/2018 at 11:35 |
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Found it . Thanks! I was searching replies, it hadn’t occurred to me to search my own comments. It was back on 9/21, just about when my Dashboard stopped listing replies.
MonkeePuzzle
> ttyymmnn
10/25/2018 at 11:38 |
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searching google within a site seems to work well for me when I have a similar search need
preface your keyword search with “site:
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ttyymmnn
> MonkeePuzzle
10/25/2018 at 11:41 |
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I tried that, but I only got original content, not comments. I eventually found it by going backwards through all of my comment history (with facw ’s help).
404 - User No Longer Available
> ttyymmnn
10/25/2018 at 11:53 |
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Well most of the comments don’t actually load. Crawlers basically just touch on a page and snapshot it, it can’t click the “Load more comments” button.
Chariotoflove
> ttyymmnn
10/25/2018 at 11:59 |
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FWIW, I have been able to Goo gle search phrases I made in comments in the distant past, as long as they had fairly unique words or pairs of words. Using those words paired with things like “opposite lock” and “Kinja”, I was able to get to comments that were buried deep within someone else’s thread. So it can be done under certain circumstances, if you ever need to again.
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ttyymmnn
> Chariotoflove
10/25/2018 at 12:28 |
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Just about every Google search I do starts with “oppositelock ttyymmnn” or “kinda ttyymmnn. ” And it usually works quite well. But searching comments seems to be an issue.
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Turbineguy: Nom de Zoom
> ttyymmnn
10/25/2018 at 12:31 |
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Let me expound a bit then if I could
. All gas turbines are more efficient at altitude where the engine’s
fuel control unit compensates for decreased air density. At low altitudes the t-prop is torque-limited whereas at high altitude they’re temp limited. (ITTs max out
)
When I was flying a Pilatus for a charter company we were always asking ATC for a higher cruise altitude, up to our 29k ceiling. (Jet guys are relentless in this regard)
The turboprop is more efficient on shorter routes up to about 500nm, after that the jet’s higher cruise speed becomes an advantage. T-prop
efficiency comes from capturing more of the exhaust energy than a comparable turbojet, but their props are only efficient up to around 500mph. A t-prop moves a larger quantity of air at a lower velocity while the turbojet moves a smaller quantity at a higher velocity, hence their noise footprint
. It’s also what makes that engine well suited to a tactical airlifter like the Herky Bird or A400M.
Turbofans are a kind of hybrid in that most of the airflow bypasses the engine core and the majority of thrust is from the fan.
Pretty much all turbofans now are high-bypass; save for old
JT8-powered 727s
and 737s still flying outside the US
.
Rolls-Royce
’s
Superfan will have a gearbox like Pratt’s
PW1000 *
and*
a fan pitch change mechanism which makes it closer to a t-prop in architecture.
Were you going to talk about t
he early t-props like the Allison T56 and Rolls-Royce
Dart and Tyne?
DAWRX - The Herb Strikes Back
> Turbineguy: Nom de Zoom
10/25/2018 at 12:31 |
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Does it annoy you when people pronounce “Turbine” as “Turban”?
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Turbineguy: Nom de Zoom
> DAWRX - The Herb Strikes Back
10/25/2018 at 12:34 |
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That’s how I pronounce it. Tur-by
ne (long I)
is more a British pronunciation of the word I think.
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Chariotoflove
> ttyymmnn
10/25/2018 at 12:34 |
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No t an exact science, to be sure, but I found empirically that adding my username was usu ally an impediment.
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ttyymmnn
> Turbineguy: Nom de Zoom
10/25/2018 at 12:38 |
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This is great information, thanks. While Oppo is generally an educated audience when it comes to engines etc, my goal is always to boil things down somewhat in the interest of readability . Generalizations are dangerous, but it’s more about context. T he article will be at least as much about the airplanes as it is the engines, but the engines, of course, made the airplanes what they were. I t helps me, though, to work from a point of greater understanding when trying to create a more simple, distilled explanation. So, as for specific engines, it would probably be more of a mention than a discussion. What I’m really angling for is a reason (or two or three ) why turboprops were attractive to airlines in the early turbojet era.
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Turbineguy: Nom de Zoom
> ttyymmnn
10/25/2018 at 12:59 |
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Thing is, the turboprop’s heyday was fairly short-lived. They were a big improvement over the big recips that powered the Connies and DC-6/7 fleets in the late 40s and 50s but the service entry of the Electra in the late 50s pretty much coincided with the 707 and DC-8. The Electra had a few crashes early on and had an extensive mod done by Lockheed to keep an engine flutter condition from ripping the wings off. They were also loud if you were sitting near the props (resonance) which pax didn’t like so ultimately only 170 were built. Bristol’s Britannia had a rash of in-flight engine failures during early operational trials and never fully solved its engine icing issue. By the early 60s jets had taken over and t-props were relegated to smaller airlines. I’d guess the initial
attraction would’ve been lower operating costs, but soon enough
the jet’s
efficiency and quieter ride
won out.
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ttyymmnn
> Turbineguy: Nom de Zoom
10/25/2018 at 14:13 |
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I am familiar with the the DC-6/7 issues from writing about them. Your comments actually give me an even better angle for the piece, which is about their short heyday. Thanks for taking the time to write. Now, I need to start writing! But that likely won’t happen until next week.
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Turbineguy: Nom de Zoom
> ttyymmnn
10/25/2018 at 15:57 |
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No worries. Glad to help.