Search found 948 matches

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by akiss20
Wed Aug 12, 2020 4:09 pm
Forum: Technical/Operations
Topic: 737CL engine sound
Replies: 5
Views: 1574

Re: 737CL engine sound

Also, that’s some pretty creepy wing flex at 1:35 in the video (likely an artifact of filming with a cell phone camera and the way in which phones capture an image) You can see that the entire frame seems to distort around those times (i.e. it's not just the wing doing some distortion). My guess is...

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by akiss20
Tue Aug 04, 2020 5:41 pm
Forum: Non-Aviation
Topic: It's back! F1 2020 Season
Replies: 241
Views: 23899

Re: It's back! F1 2020 Season

Sure, giving the seat to Hulk makes a lot of sense as he was on the grid last year. It's just that having a test or reserve driver and not give him the seat when you need him is a bit weird to me. Maybe the fact they were so close to the factory helped to make the decision. They were able to quickl...

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by akiss20
Fri Jul 31, 2020 5:42 pm
Forum: Non-Aviation
Topic: It's back! F1 2020 Season
Replies: 241
Views: 23899

Re: It's back! F1 2020 Season

Fair enough question, one I am sure he is asking too. I am guessing the RP bosses really want to maximize their chance at a podium now that they suddenly have essentially the number 2 car in the field and leap-frogged several places in one go. Gutierrez's pride comes second to that I suppose. Just m...

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by akiss20
Fri Jul 31, 2020 4:46 pm
Forum: Non-Aviation
Topic: It's back! F1 2020 Season
Replies: 241
Views: 23899

Re: It's back! F1 2020 Season

It’s been 4 years since Gutierrez drove a GP. Maybe RP wanted a more recently experienced driver, especially if they might be battling for a podium with the likes of Max.

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by akiss20
Mon Jul 06, 2020 10:56 am
Forum: Technical/Operations
Topic: Why are Alaska and Hawaii ICAO airport codes different from those in the contintental U.S.?
Replies: 9
Views: 3269

Re: Why are Alaska and Hawaii ICAO airport codes different from those in the contintental U.S.?

Let's not forget that when the ICAO proposed four-letter codes in 1947, the USA objected and said three-letter codes were sufficient... Hmmm.. Interesting. I wonder what made them think that??? I will have to apply my historian skills to research this as I find it interesting. Probably the same thi...

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by akiss20
Sat May 16, 2020 12:46 pm
Forum: Non-Aviation
Topic: Top of the Hub in Boston Permantely Closed
Replies: 10
Views: 1115

Re: Top of the Hub in Boston Permnantely Closed

Eh. Crappy overpriced food, you’re just paying for the view. The space isn’t going away, hopefully they will turn it into something more accessible. In the 11 years I’ve lived in Boston I went exactly once.

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by akiss20
Mon Feb 17, 2020 2:36 am
Forum: Technical/Operations
Topic: (Hypothetical) Water injection on high-bypass engine
Replies: 34
Views: 4492

Re: (Hypothetical) Water injection on high-bypass engine

If a water-injection system were to be installed on an aircraft high-bypass turbofan, where would the injectors be placed? My guess is probably in the core, just after the low-pressure turbine, or in the bypass duct. Probably not injecting it into the combustion chamber, as cooling the flame would ...

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by akiss20
Sat Jan 25, 2020 2:59 pm
Forum: Technical/Operations
Topic: Will ATC ever interact with the Autopilot?
Replies: 12
Views: 1859

Re: Will ATC ever interact with the Autopilot?

Garmin's new emergency autoland system will talk to ATC. I can see it eventually having some remote function. AFAIK it doesn’t really “talk” it just squawks 7700 and broadcasts to inform ATC an emergency is underway and what its intentions are (proceeding direct KXXX for landing runway Y, landing i...

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by akiss20
Fri Dec 20, 2019 8:51 pm
Forum: Technical/Operations
Topic: Will ATC ever interact with the Autopilot?
Replies: 12
Views: 1859

Re: Will ATC ever interact with the Autopilot?

Garmin's new emergency autoland system will talk to ATC. I can see it eventually having some remote function. AFAIK it doesn’t really “talk” it just squawks 7700 and broadcasts to inform ATC an emergency is underway and what its intentions are (proceeding direct KXXX for landing runway Y, landing i...

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by akiss20
Wed Dec 18, 2019 3:16 pm
Forum: Non-Aviation
Topic: Is Religious Freedom Losing Its Ground Around The Globe?
Replies: 66
Views: 3182

Re: Is Religious Freedom Loosing Its Ground Around The Globe?

It certainly is. At least in the US, you have all the tinker-toys running to the SCotUS if there is a manger on public property. Even the Pope is considered a plant. Funny how the same people who complain about not being able to put up a manger then clutch their pearls when the Satanic Temple tries...

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by akiss20
Sat Dec 14, 2019 4:14 pm
Forum: Technical/Operations
Topic: How much power is needed for pressurization?
Replies: 40
Views: 3301

Re: How much power is needed for pressurization?

I don't often calc compressed gasses, just building air where the pressure changes are low enough to be ignored. Didn't realize the compression would heat it that much, yet I've installed cooling towers to handle the large 120 psi plant aftercoolers. I would imagine the unit includes a heat pump th...

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by akiss20
Sat Dec 14, 2019 3:24 am
Forum: Technical/Operations
Topic: How much power is needed for pressurization?
Replies: 40
Views: 3301

Re: How much power is needed for pressurization?

In figure 2.2 of this report it lists the ECS/ Pressurization at cruise of 320 kW and 32 kW for ECS fans. I haven't found an airflow but I would guess that most of the load is heating the air from -50F to 70F, rather than pressurizing to about 7 psig. I am assuming that is the worst case demand loa...

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by akiss20
Fri Dec 13, 2019 10:21 pm
Forum: Technical/Operations
Topic: How much power is needed for pressurization?
Replies: 40
Views: 3301

Re: How much power is needed for pressurization?

In figure 2.2 of this report it lists the ECS/ Pressurization at cruise of 320 kW and 32 kW for ECS fans. I haven't found an airflow but I would guess that most of the load is heating the air from -50F to 70F, rather than pressurizing to about 7 psig. I am assuming that is the worst case demand loa...

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by akiss20
Mon Nov 25, 2019 2:19 pm
Forum: Non-Aviation
Topic: Tesla Truck: What the Hell?
Replies: 114
Views: 4316

Re: Tesla Truck: What the Hell?

187,000 deposits in 3 days. I told you it would sell. Tesla as I mentioned will only be able to build 200,000 to 300,000 of these worldwide per year. That’s a piece of cake compared to GM, Ford, and Ram, which each sells 1 million to 1.4 million per year, each. $100 refundable deposits aren’t the s...

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by akiss20
Tue Nov 05, 2019 2:21 pm
Forum: Technical/Operations
Topic: Most Commercially Active U.S. Airports With 100 Ft Wide Runways?
Replies: 16
Views: 1433

Re: Most Commercially Active U.S. Airports With 100 Ft Wide Runways?

If you don’t mind small airlines, a lot of the airports Cape Air flies into are 100’. KRUT, KPVC, KMVY etc. not sure that C414s is what you had in mind though.

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by akiss20
Mon Nov 04, 2019 10:16 pm
Forum: Technical/Operations
Topic: Why are turboprops so named ?
Replies: 56
Views: 9403

Re: Why are turboprops so named ?

Disagree. There is enough residual thrust from the exhaust, that the performance tables take it into account in the POH. At high speeds it can approach 10% in extreme cases, but is usually less. It is something like 50 kg of thrust on the ATR. Not even enough to get it rolling with brakes released....

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by akiss20
Fri Sep 27, 2019 1:29 pm
Forum: Non-Aviation
Topic: My Tiny Hometown on a UAL Aircraft
Replies: 11
Views: 2857

Re: My Tiny Hometown on a UAL Aircraft

Awesome! I grew up not 20 minutes from that red mill and have gone through many times. Very neat to see.

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by akiss20
Fri Sep 06, 2019 4:47 pm
Forum: Technical/Operations
Topic: Prince Harry's Private Jet
Replies: 23
Views: 4016

Re: Prince Harry's Private Jet

I won't name the owner, but at least one Gulfstream 650 travels with a backup Gulfstream 550 on most occasions. That seems a little excessive don't ya think? I know AF 1 does this routinely usually with a 757 backing the 747 but that is perhaps understandable should the big boy hae a serious breakd...

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by akiss20
Mon Sep 02, 2019 10:25 pm
Forum: Non-Aviation
Topic: Contact Lenses wearers
Replies: 18
Views: 3059

Re: Contact Lenses wearers

I have never used monthly lenses which you need to store mostly because I'm not interested in the hassle or storing them even if they are slightly cheaper. Glad you found what works for you, but something to note about daily lenses is that they tend to be a bit more fragile. My boyfriend wears dail...

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by akiss20
Mon Sep 02, 2019 12:54 pm
Forum: Non-Aviation
Topic: Contact Lenses wearers
Replies: 18
Views: 3059

Re: Contact Lenses wearers

Wore glasses for probably 7 years before trying contacts and god I hate going back occasionally. Contacts are way better IMO. Nothing like having ALL of your vision be clear rather than looking through a porthole of clear vision. I wear a set of contacts for probably 2-3 weeks before replacing (they...

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by akiss20
Wed Jul 03, 2019 6:39 pm
Forum: Technical/Operations
Topic: Jet buzzsaw noise
Replies: 17
Views: 1923

Re: Jet buzzsaw noise

That’s exactly what I said. “And its harmonics up to blade passing frequency” You said "also". Only the shaft frequency and its harmonics are created by supersonic blade tip speed and are perceived as buzzsaw noise. And the harmonics of the shaft frequency reach far beyond the BPF. Gruß, ...

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by akiss20
Wed Jul 03, 2019 4:07 pm
Forum: Technical/Operations
Topic: Jet buzzsaw noise
Replies: 17
Views: 1923

Re: Jet buzzsaw noise

It is not "also" at shaft frequency, it is only at shaft frequency and many many of its harmonics. You can also have a pronounced peak at the blade passing frequency, but that one doesn't disappear at cruise level. It might just get less pronounced. Gruß, masi1157 That’s exactly what I sa...

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by akiss20
Wed Jul 03, 2019 2:12 pm
Forum: Technical/Operations
Topic: Jet buzzsaw noise
Replies: 17
Views: 1923

Re: Jet buzzsaw noise

You are both right, the buzzsaw noise is due to shocks with a tip Mach number greater than unity but is also at shaft frequency and it’s harmonics up to blade passing frequency. See my post from a long time ago about this https://www.airliners.net/forum/viewtopic.php?f=5&t=775259&p=11182623#...

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by akiss20
Mon Jun 17, 2019 2:39 pm
Forum: Non-Aviation
Topic: Graphing calculators
Replies: 16
Views: 2088

Re: Graphing calculators

The old joke is that we should peg our currencies to the price of the TI-83, it’s been $100 for decades now.

After high school I have never used my graphing calculator in college or now in grad school. Either everything is symbolic or when I am doing numerical anything it’s in Matlab.

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by akiss20
Sat Apr 06, 2019 5:41 pm
Forum: Technical/Operations
Topic: Neo vs Ceo cockpit differences
Replies: 9
Views: 2212

Re: Neo vs Ceo cockpit differences

What is dual cool theoretically supposed to do?

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by akiss20
Thu Mar 14, 2019 8:38 pm
Forum: Technical/Operations
Topic: Is there a problem with Boeing’s engineering team?
Replies: 33
Views: 4182

Re: Is there a problem with Boeing’s engineering team?

I wouldn't be at all surprised if in 50 years some old engineer writes a tell-all about how they raised concerns to management and those concerns were promptly ignored. Management of large engineering projects have long histories of ignoring on the ground engineers for the sake of meeting some goal ...

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by akiss20
Wed Mar 06, 2019 9:59 pm
Forum: Non-Aviation
Topic: Imperial System
Replies: 230
Views: 10500

Re: Imperial System

Tugg, There are issues though, and metric solves them much better. Newtons vs Pound-force 1 Liter of water weighs 1 KG At what pressure and temperature :) This relationship is not definitionally true anymore, although 1L of water is very close to 1Kg. The kilogram was defined in 1795 as the weight ...

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by akiss20
Wed Mar 06, 2019 9:48 pm
Forum: Non-Aviation
Topic: Imperial System
Replies: 230
Views: 10500

Re: Imperial System

This is not true. All base SI units will be based off of exact values of physical constants in the universe (the kilogram and a few others are switching definition on May 20th 2019). The meter is defined off the distance the speed of light travels in a certain amount of time (and the second itself ...

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by akiss20
Wed Mar 06, 2019 8:55 pm
Forum: Non-Aviation
Topic: Imperial System
Replies: 230
Views: 10500

Re: Imperial System

I love this discussion. I see little value in switching to the metric system as conversion is easy (especially nowadays). Also thought metric supporters claim it is "scientific" it really isn't anymore so really than imperial. It is just based on a different set base of measurement. The m...

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by akiss20
Wed Feb 27, 2019 4:05 pm
Forum: Non-Aviation
Topic: Repub. Rep warns Cohen
Replies: 64
Views: 4740

Re: Repub. Rep warns Cohen

apodino wrote:
Can a legal expert weigh in on here for me? How does Cohens testimony not violate attorney client privilege?

He’s already been disbarred so what else does he have to lose? Is violating attorney client privilege actually a crime? Not as far as I know but I’m no expert.

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by akiss20
Thu Feb 07, 2019 4:02 am
Forum: Technical/Operations
Topic: PAE An-124 Spoolup
Replies: 10
Views: 2449

Re: PAE An-124 Spoolup

Maybe taxi out/delays were shorter than expected and they needed to get down to MTOW? If you need to burn fuel fast, TO power is your best bet and probably not too many places you can throttle up near a runway besides the runway itself.

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by akiss20
Mon Feb 04, 2019 8:35 pm
Forum: Technical/Operations
Topic: Trent 772B-60
Replies: 5
Views: 1180

Re: Trent 772B-60

You are almost certainly not going to find any dimensions beyond the fan diameter. Such things are pretty tightly guarded intellectual property of the engine companies.

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by akiss20
Mon Jan 07, 2019 11:42 pm
Forum: Technical/Operations
Topic: Flight school bias toward carrier contract students
Replies: 29
Views: 2190

Re: Flight school bias toward carrier contract students

Wait I thought all of us millennials were idiots because we were doing useless college degrees like history or French literature? Remind me which branch of uselessness and stupidity I’m in again? Why don't you remind us? https://www.youtube.com/watch?v=RGvrmltfMrA Cute. Whatever it takes to feed yo...

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by akiss20
Mon Jan 07, 2019 9:05 pm
Forum: Technical/Operations
Topic: Flight school bias toward carrier contract students
Replies: 29
Views: 2190

Re: Flight school bias toward carrier contract students

Stupid server errors and duplicate posts. It would be nice if we could drag the forum software into the 21st century tbh.

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by akiss20
Mon Jan 07, 2019 8:05 pm
Forum: Technical/Operations
Topic: Flight school bias toward carrier contract students
Replies: 29
Views: 2190

Re: Flight school bias toward carrier contract students

I flew with one who seriously asked me, after pointing out the D-Day beaches below, “now, why were the Germans in France?” That’s the state of education today. GF Wait I thought all of us millennials were idiots because we were doing useless college degrees like history or French literature? Remind...

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by akiss20
Mon Jan 07, 2019 8:05 pm
Forum: Technical/Operations
Topic: Flight school bias toward carrier contract students
Replies: 29
Views: 2190

Re: Flight school bias toward carrier contract students

I flew with one who seriously asked me, after pointing out the D-Day beaches below, “now, why were the Germans in France?” That’s the state of education today. GF Wait I thought all of us millennials were idiots because we were doing useless college degrees like history or French literature? Remind...

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by akiss20
Fri Dec 21, 2018 9:49 pm
Forum: Non-Aviation
Topic: US Government Shutdown Likely
Replies: 127
Views: 6463

Re: US Government Shutdown Likely

GalaxyFlyer wrote:
Essential services Will. Be. Paid. Shutdown or no shutdown, as will most government workers and pensioners, etc. It’s all a show.


Gf


They get paid eventually. Not while the government is shutdown, just weeks or months afterwords.

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by akiss20
Mon Dec 17, 2018 8:07 pm
Forum: Non-Aviation
Topic: Trumps approval rating at 61%, 80% would re vote for him
Replies: 35
Views: 2380

Re: Trumps approval rating at 61%, 80% would re vote for him

Early Iowa primaries are a good indication of how things go as a nation. These numbers indicate a landslide in 2020 for Trump. In... the primary? Do you understand any of this? I've always wondered that with your posts... a very sophisticated troll job or just someone who doesn't understand much. C...

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by akiss20
Tue Nov 20, 2018 1:57 am
Forum: Non-Aviation
Topic: Shooter(s) Now in Mercy Hospital in Chicago
Replies: 46
Views: 2121

Re: Shooter(s) Now in Mercy Hospital in Chicago

We don't want to be Europe why can't you get that through your skulls? Since when do you get to speak for everyone in the US? And given that 61% of Americans favor stricter gun control laws, we do want to become more European in this regard. https://news.gallup.com/poll/1645/guns.aspx i dont speak ...

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by akiss20
Tue Nov 20, 2018 12:59 am
Forum: Non-Aviation
Topic: Shooter(s) Now in Mercy Hospital in Chicago
Replies: 46
Views: 2121

Re: Shooter(s) Now in Mercy Hospital in Chicago

If only we were more European minded in this regard these things wouldn't happen. Dark ages. We don't want to be Europe why can't you get that through your skulls? Since when do you get to speak for everyone in the US? And given that 61% of Americans favor stricter gun control laws, we do want to b...

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by akiss20
Thu Nov 15, 2018 9:56 pm
Forum: Non-Aviation
Topic: Avenatti arrested for domestic violence
Replies: 80
Views: 4318

Re: Avenatti arrested for domestic violence

Super80Fan wrote:
The left: Justice Kavanaugh is an evil serial rapist who locks women up in his torture basement.
Also the left: Avenatti is innocent! This was a setup by the right! We believe him!


As evidenced by multiple posters calling for an investigation of Avenatti? Just like we did for Kavanaugh? :roll:

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by akiss20
Thu Nov 15, 2018 9:51 pm
Forum: Non-Aviation
Topic: A rant about the Las Vegas hospitality industry
Replies: 32
Views: 3016

Re: A rant about the Las Vegas hospitality industry

When they charge your credit card, deny the charge and tell them that their charge is simply a "request for payment" and see how well they like that! :)

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by akiss20
Thu Nov 15, 2018 12:47 am
Forum: Non-Aviation
Topic: Avenatti arrested for domestic violence
Replies: 80
Views: 4318

Re: Avenatti arrested for domestic violence

Pyrex wrote:
#believeallvictims

That's how this works, right?


Yes. There should be an investigation and a trial and if he is found guilty he should go to jail just like anyone else.

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by akiss20
Fri Nov 02, 2018 7:54 pm
Forum: Non-Aviation
Topic: Tanzania to hunt down gays
Replies: 92
Views: 4748

Re: Tanzania to hunt down gays

I am not. Being homosexual will not see ypu imprisoned or executed in Europe, North, Central or Southern America. Or Australasia. Just wondered why homosexuality is illegall in nearly all African and Asian nations. You literally ignored the argument I made. My point is that the rest of the world wa...

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by akiss20
Fri Nov 02, 2018 6:36 pm
Forum: Non-Aviation
Topic: Tanzania to hunt down gays
Replies: 92
Views: 4748

Re: Tanzania to hunt down gays

How was it in Africa BEFORE colonialism and missionary work? Do we know? Are there any records? https://en.m.wikipedia.org/wiki/History_of_homosexuality#Africa The demographics and culture of Egypt, and northern Africa in general, are completely different than that of antiquity. Not really a fair c...

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by akiss20
Fri Nov 02, 2018 5:52 pm
Forum: Non-Aviation
Topic: Tanzania to hunt down gays
Replies: 92
Views: 4748

Re: Tanzania to hunt down gays

But the same religions are practised in Europe and South America. Not illegal there Because higher economic conditions and education gave birth to secular social advancement. You think that Europe or North America is somehow special? They were right where Africa is now only a hundred years ago or l...

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by akiss20
Fri Nov 02, 2018 5:34 pm
Forum: Non-Aviation
Topic: Tanzania to hunt down gays
Replies: 92
Views: 4748

Re: Tanzania to hunt down gays

Why are African nations so intollerant of homosexuality? Really is primative thinking. Because religion taught them to be so. But the same religions are practised in Europe and South America. Not illegal there Because higher economic conditions and education gave birth to secular social advancement...

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by akiss20
Fri Nov 02, 2018 5:29 pm
Forum: Non-Aviation
Topic: Tanzania to hunt down gays
Replies: 92
Views: 4748

Re: Tanzania to hunt down gays

https://en.m.wikipedia.org/wiki/History ... ity#Africa
-->

Dieuwer wrote:
How was it in Africa BEFORE colonialism and missionary work? Do we know? Are there any records?

https://en.m.wikipedia.org/wiki/History ... ity#Africa

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by akiss20
Fri Nov 02, 2018 3:13 pm
Forum: Non-Aviation
Topic: Tanzania to hunt down gays
Replies: 92
Views: 4748

Re: Tanzania to hunt down gays

noviorbis77 wrote:
Why are African nations so intollerant of homosexuality?

Really is primative thinking.


Because religion taught them to be so.

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by akiss20
Fri Nov 02, 2018 12:48 pm
Forum: Non-Aviation
Topic: Tanzania to hunt down gays
Replies: 92
Views: 4748

Re: Tanzania to hunt down gays

The religious right in this country has put a lot of effort into "outreach," which translates into supporting and educating haters in African countries to criminalize and even execute gay people for doing nothing more than being gay. Please provide a source for your ridiculous claim. http...

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