Search found 935 matches

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by kitplane01
Tue Oct 16, 2018 6:05 am
Forum: Civil Aviation
Topic: Data: scrap value of an A380
Replies: 19
Views: 4301

Re: Data: scrap value of an A380

The very first A380 to be scrapped has an estimated airframe value of $45 million, and the power plants should be worth another $24 million. The owner of this 11 year old plane expect to see a small but positive return on investment when all is said and done. Having a positive return after scrappin...

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by kitplane01
Tue Oct 16, 2018 2:07 am
Forum: Civil Aviation
Topic: Data: scrap value of an A380
Replies: 19
Views: 4301

Data: scrap value of an A380

The very first A380 to be scrapped has an estimated airframe value of $45 million, and the power plants should be worth another $24 million. The owner of this 11 year old plane expect to see a small but positive return on investment when all is said and done. Having a positive return after scrapping...

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by kitplane01
Fri Oct 12, 2018 3:26 am
Forum: Technical/Operations
Topic: How efficient can a jet engine get in the future ?
Replies: 19
Views: 2062

Re: How efficient can a jet engine get in the future ?

Unducted fan ...

The marketing name for propellers with lots of blades.

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by kitplane01
Fri Oct 12, 2018 3:18 am
Forum: Technical/Operations
Topic: How efficient can a jet engine get in the future ?
Replies: 19
Views: 2062

Re: How efficient can a jet engine get in the future ?

Does anyone know what the fuel energy ratio Efficiency is on the jet engine with the best fuel economy is ? Looks like about 71-72 percent propulsive efficiency, 39-40 percent overall efficiency for the Airbus 350 and Boeing 787. https://www.nap.edu/openbook/23490/xhtml/images/p-51-1.jpg There are ...

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by kitplane01
Fri Oct 12, 2018 3:12 am
Forum: Technical/Operations
Topic: 3 x 737-800's or 1 x A380
Replies: 10
Views: 1592

Re: 3 x 737-800's or 1 x A380

Would it be more economical for an airline to operate 1 single A380 or 3 738's for a flight that is around 4 hours long? The operating costs per hour are more for the A380 but I still think it is more efficient than sending 3 738's, just thinking about using 3 gates, 3 slots etc instead of 1. Can a...

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by kitplane01
Fri Oct 12, 2018 2:54 am
Forum: Civil Aviation
Topic: Las Vegas as a hub for current US majors
Replies: 89
Views: 8139

Re: Las Vegas as a hub for current US majors

Too far west to be east-west hub, too far south to be western north-south hub and disconnected from the eastern half of the country. Simple look at a map tells. AW built PHX because it was based there. GF SEA-SFO-NYC 3250 miles SEA-LAS-NYC 3100 miles SEA-PHX-NYC 3260 miles SEA-SLC-NYC 2691 miles LA...

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by kitplane01
Wed Oct 10, 2018 4:51 pm
Forum: Technical/Operations
Topic: What exactly is the fuel-inerting system on 747's?
Replies: 38
Views: 3402

Re: What exactly is the fuel-inerting system on 747's?

On the other hand, full exemptions from compliance apply to aircraft certified for cargo only, aircraft below a certain MTOW, aircraft that use fuel systems that demonstrate an equivalent or greater level of safety by other means (such as the A380) What???? Now I'm curious. What does the A380 do?

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by kitplane01
Tue Oct 09, 2018 5:25 am
Forum: Civil Aviation
Topic: The rest of Michigan thread - 2018
Replies: 67
Views: 4036

Re: The rest of Michigan thread - 2018

tjwgrr wrote:

Dont forget about G4 who's been operating GRR-IWA (Phoenix-Mesa) for quite some time.


Neither Travelocity nor Google can find this flight. Are you sure?

I'd be interested if it exists.

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by kitplane01
Fri Oct 05, 2018 5:03 am
Forum: Civil Aviation
Topic: Air India Privatization, by June-Failed sale. What next?
Replies: 768
Views: 55222

Re: Air India Privatization, by June-Failed sale. What next?

The recovery package will be finalized in 10 to 15 days. I'm very interested in what reforms will reduce the losses: https://www.moneycontrol.com/news/india/govt-to-finalise-air-india-revival-package-in-10-15-days-says-civil-aviation-secy-r-n-choubey-3014581.html/amp Is there any reason to assume t...

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by kitplane01
Fri Oct 05, 2018 4:56 am
Forum: Civil Aviation
Topic: United Airlines orders 9 787-9's
Replies: 172
Views: 30263

Re: United Airlines orders 9 787-9's

UA makes orders for airplanes it can finance, to operate where it has the demand. This is in contrast to massive, costly orders which end up as albatrosses when the economy turns south and the company doesn't have enough profitable flying to deploy them and generate a ROI. Gigantic 747/777 orders i...

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by kitplane01
Wed Oct 03, 2018 2:29 am
Forum: Civil Aviation
Topic: United Airlines orders 9 787-9's
Replies: 172
Views: 30263

Re: United Airlines orders 9 787-9's

No, this is how co operates. UA didn't order piecemeal, instead they made large order announcements. UA makes orders for airplanes it can finance, to operate where it has the demand. This is in contrast to massive, costly orders which end up as albatrosses when the economy turns south and the compa...

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by kitplane01
Sat Sep 29, 2018 9:32 pm
Forum: Civil Aviation
Topic: Airbus Corporate Jet ACJ321LR, Scheduled ?
Replies: 57
Views: 7104

Re: Airbus Corporate Jet ACJ321LR, Scheduled ?

Thank you for opening the subject keesje. I considered opening the subject myself for the last 5 month, but felt too lazy about it. I also see a great potential for the ACJ321LR (especially for smaller governments in Africa/Asia), but so far it's very quiet from Airbus. I have a feeling the ACJ321L...

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by kitplane01
Sat Sep 29, 2018 9:24 pm
Forum: Civil Aviation
Topic: Airbus Corporate Jet ACJ321LR, Scheduled ?
Replies: 57
Views: 7104

Re: Airbus Corporate Jet ACJ321LR, Scheduled ?

In 2013 there was ONE A321ACJ delivered. https://gama.aero/facts-and-statistics/statistical-databook-and-industry-outlook/ So would the do one? :yes: But whomever is writing that big a check would want the A330ACJ... Did I read right, zero ACJ delivered in 2017? :faint: Neither Boeing or Airbus sel...

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by kitplane01
Fri Sep 28, 2018 5:35 am
Forum: Technical/Operations
Topic: Jet Heat Exchangers??
Replies: 6
Views: 850

Jet Heat Exchangers??

https://www.flightglobal.com/news/artic ... at-452131/

But what is a a jet engine heat exchanger, and what does it do?
-->

"LHT develops automated steam cleaner for engine heat exchangers".
https://www.flightglobal.com/news/artic ... at-452131/

But what is a a jet engine heat exchanger, and what does it do?

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by kitplane01
Mon Sep 24, 2018 9:51 pm
Forum: Technical/Operations
Topic: How efficient can a jet engine get in the future ?
Replies: 19
Views: 2062

Re: How efficient can a jet engine get in the future ?

Just wondering if anyone would know how much more efficient can a jet engine get compared to the cutting edge jet engines out there now on commercial airliners Does anyone know what the fuel energy ratio Efficiency is on the jet engine with the best fuel economy is ? Does anyone know what the next ...

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by kitplane01
Mon Sep 24, 2018 9:32 pm
Forum: Civil Aviation
Topic: First 717 Being Scrapped
Replies: 31
Views: 9409

Re: First 717 Being Scrapped

Dalmd88 wrote:
tomaheath wrote:
Parton my ignorance but don’t a lot of the airframe parts and engines need paperwork for last maintenance and hours flown?

Any structural part that has been drilled, will not be able to be reused on another plane.


Can you explain more about this please?

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by kitplane01
Fri Sep 21, 2018 1:38 am
Forum: Technical/Operations
Topic: What is the most economical GA aircraft??????
Replies: 10
Views: 1999

Re: What is the most economical GA aircraft??????

Hi I am looking for an economical 6 seat or high useful load 4 seat aircraft after full tanks. Something not more 150k CAD but up to 200k CAD is fine but not preferred. Also just single engine aircraft. It's mission will be cross country recreation and carrying camping supplies also I live in a mou...

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by kitplane01
Fri Sep 21, 2018 1:35 am
Forum: Technical/Operations
Topic: Engine over the fuselage question
Replies: 38
Views: 2639

Re: Engine over the fuselage question

> The Hondajet is an example of over the wing. No other business jet does this. The Scaled Composites Triumph also had an over-the-wing engine installation. It was also the first airplane to fly with FJ44 engines. I did the aero design of the nacelle installation and will say that it wasn't easy. 1...

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by kitplane01
Thu Sep 13, 2018 2:40 am
Forum: Technical/Operations
Topic: Power by the Hour
Replies: 1
Views: 879

Power by the Hour

Most older business jets have engines maintained by their owners. But newer business jets are often on power-by-the-hour. A clear example is this: older Citations powered by Pratt engines are normally owner maintained, but newer Citations powered by Williams are almost always power by the hour. Only...

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by kitplane01
Thu Sep 13, 2018 2:33 am
Forum: Technical/Operations
Topic: Engine over the fuselage question
Replies: 38
Views: 2639

Re: Engine over the fusulage

BTW ignoring all the other arguments for wing mounted engines, mounting well behind the center of gravity, e.g. MD-80, is just fine, as long as you also move the center of lift back. Which is why the MD-80 wings are mounted relatively much further back compared to, say, the 737 wings. 2090945,43842...

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by kitplane01
Wed Sep 12, 2018 5:28 am
Forum: Technical/Operations
Topic: Engine over the fuselage question
Replies: 38
Views: 2639

Re: Engine over the fusulage

Hei all, This is maybe a noob question for many of you but I am not an engineers.... and I failed to find the reply by research function. The engine are normallly located near the centre or gravity due to structural reason + (if I am not wrong) it's easier for fuel intake system and some how better...

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by kitplane01
Wed Sep 12, 2018 5:19 am
Forum: Civil Aviation
Topic: Singapore’s Sovereign Wealth Fund interested in purchasing GECAS
Replies: 14
Views: 2158

Re: Singapore’s Sovereign Wealth Fund interested in purchasing GECAS

Singapore’s sovereign wealth fund has expressed interest in buying General Electric Co.’s plane-leasing unit, said people with knowledge of the matter. At a meeting between GIC Pte. and GE officials, fund executives asked whether the Boston-based company would consider selling all or a part of GE C...

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by kitplane01
Sun Sep 02, 2018 12:32 am
Forum: Technical/Operations
Topic: Jet Liner Control System Failures??
Replies: 16
Views: 1616

Jet Liner Control System Failures??

Have their ever been any computer control system failures so bad they had to go to alternate law or direct law in the modern jet age? I know about the DC-10 (United 232) that had hydraulic control system failure, and about 737 rudder issues. That's not what I'm asking. I'm asking about failures of h...

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by kitplane01
Sat Sep 01, 2018 4:33 am
Forum: Technical/Operations
Topic: Need help researching aircraft with short runway requirements, and airport environmental laws
Replies: 47
Views: 2164

Re: Need help researching aircraft with short runway requirements, and airport environmental laws

1200 meters if fine for small propeller aircraft with a reasonable pilot on a reasonable day. I've never heard of an airliner operating into a 1200 meter runway. Maybe someone does somewhere, but it's quite rare.

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by kitplane01
Sat Sep 01, 2018 4:30 am
Forum: Technical/Operations
Topic: Why Anhedral with fly by wire?
Replies: 23
Views: 1425

Re: Why Anhedral with fly by wire?

I think everything you wrote is true for non-fly-by-wire aircraft. But in the fly-by-wire world, one can counter undesired rolling moments from a slideslip using programmed movement of the ailerons. The human need never know anything is going on. A different poster suggested that flyability conside...

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by kitplane01
Fri Aug 31, 2018 4:33 am
Forum: Technical/Operations
Topic: Why Anhedral with fly by wire?
Replies: 23
Views: 1425

Re: Why Anhedral with fly by wire?

I have been assuming that the anhedral of high wing aircraft is due to gravity. In flight, due to lift, the wings are level. With low wing aircraft this is not possible due to ground clearance. Is that assumption far from reality? That is not at all the reason for anhedral and dihedral. The wings o...

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by kitplane01
Fri Aug 31, 2018 4:29 am
Forum: Technical/Operations
Topic: Why Anhedral with fly by wire?
Replies: 23
Views: 1425

Re: Why Anhedral with fly by wire?

Or you can have the great F4 with dihedral on the wing and anhedral on the horizontal stabilizer I That was done to keep the tail out of the wake of the main wing at various angles of attack. It's a reasonable reason to have andedral for some planes. Other planes just use a T-tail, or other arragme...

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by kitplane01
Fri Aug 31, 2018 4:27 am
Forum: Technical/Operations
Topic: Why Anhedral with fly by wire?
Replies: 23
Views: 1425

Re: Why Anhedral with fly by wire?

The normal reason to have anhedral angle is for better stability Are you sure? Acc. Wiki dihedral would be much more stable. So anhedral on high mounted aircraft is done for increasing maneuverability. You're right. I was trying to be too cute with my words. By "better" I means "not ...

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by kitplane01
Fri Aug 31, 2018 4:25 am
Forum: Technical/Operations
Topic: Why Anhedral with fly by wire?
Replies: 23
Views: 1425

Re: Why Anhedral with fly by wire?

fr8mech wrote:
Just from a practical point-of-view, the aircraft you mention are military cargo aircraft. The high-wing is a result of the necessity to keep the fuselage as close to the ground to facilitate rapid load/unload.


I didn't ask why high wings. I asked why anhedral.

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by kitplane01
Fri Aug 31, 2018 4:24 am
Forum: Technical/Operations
Topic: Why Anhedral with fly by wire?
Replies: 23
Views: 1425

Re: Why Anhedral with fly by wire?

The loss of lift isn't very large ... There are two sources of inefficiency. (1) The wing lift vector is not vertical, which reduces lift and (2) the wing has to weigh more to have the same span. Unless you get some benefit, you wouldn't accept any inefficiency. Aerodynamic designers will kill thei...

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by kitplane01
Thu Aug 30, 2018 6:08 am
Forum: Technical/Operations
Topic: Why Anhedral with fly by wire?
Replies: 23
Views: 1425

Why Anhedral with fly by wire?

I notice that most high wing jet aircraft, even ones with fly by wire controls, have significant Anhedral (the wings droop), Look at a C-5, a C-17, and AN-124, etc. This causes a slight loss of lift, since the lift vector for each wing is not vertical. The normal reason to have anhedral angle is for...

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by kitplane01
Thu Aug 30, 2018 12:05 am
Forum: Technical/Operations
Topic: PT-6
Replies: 6
Views: 1036

Re: PT-6

Where are PT-6 built? Could Canada build PT-6s by themselves, or are they dependent on significant imported parts? Can I ask what's the reason for that question? You want to go to war with the USA with a fleet of DHC-6 Twin Otters and thus be independent on part delivery from the South? :lol: Just ...

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by kitplane01
Tue Aug 28, 2018 11:08 pm
Forum: Technical/Operations
Topic: PT-6
Replies: 6
Views: 1036

Re: PT-6

Where are PT-6 built? Could Canada build PT-6s by themselves, or are they dependent on significant imported parts? Pratt and Whitney Canada builds the PT6 series many parts are built by american companies though . It could be built solely in Canada but it's under a US Patent and thus could also be ...

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by kitplane01
Tue Aug 28, 2018 4:40 am
Forum: Civil Aviation
Topic: Air India Privatization, by June-Failed sale. What next?
Replies: 768
Views: 55222

Re: Air India Privatization, by June-Failed sale. What next?

I think what would help me most is if people made an explicit prediction what they think will happen. Not what they think ought to happen, but what they think will happen.

I always find that kind of thing clarifying.

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by kitplane01
Tue Aug 28, 2018 4:38 am
Forum: Technical/Operations
Topic: PT-6
Replies: 6
Views: 1036

PT-6

Where are PT-6 built? Could Canada build PT-6s by themselves, or are they dependent on significant imported parts?

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by kitplane01
Fri Aug 24, 2018 8:32 am
Forum: Civil Aviation
Topic: BA drops Tehran from 23 September 2018
Replies: 140
Views: 11982

Re: BA drops Tehran from 23 September 2018

If humanity is to progress, certain mindsets must be eradicated using peaceful methods, one of which are economic sanctions. Iran is not compatible with the Western world and ideas of equality seem abstract to its citizens regardless of the social ladder. I hope the US will impose similar sanctions...

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by kitplane01
Fri Aug 24, 2018 8:17 am
Forum: Civil Aviation
Topic: BA drops Tehran from 23 September 2018
Replies: 140
Views: 11982

Re: BA drops Tehran from 23 September 2018

Great news. Shows sanctions are working. The west must continue to apply severe pressure to force the theocratic government to its knees and usher in the great Persian country that is modern and secular. Well said. However I don't understand why POTUS allows European carriers to operate to Iran. He...

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by kitplane01
Wed Aug 22, 2018 7:34 am
Forum: Civil Aviation
Topic: Worlds Busiest Air Routes
Replies: 7
Views: 3099

Re: Worlds Busiest Air Routes

This is way too vague to take anything from, without going to OAG for more research. E.g. what does "LA to San Francisco" even mean? LAX-SFO only? Or BUR/SNA/ONT/LGB-OAK/SJC count too? Also, from the look of it, this seems to be a measure of frequency instead of capacity. It is by frequen...

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by kitplane01
Wed Aug 22, 2018 3:50 am
Forum: Civil Aviation
Topic: Worlds Busiest Air Routes
Replies: 7
Views: 3099

Worlds Busiest Air Routes

World's busiest air routes, 2017. 1. Jeju to Seoul 2. Melbourne to Sydney 3. Mumbai to Delhi 4. Fukuoka to Tokyo 5. Rio de Janeiro to Sao Paulo 6. Sapporo to Tokyo 7. LA to San Francisco 8. Brisbane to Sydney 9. Cape Town to Johannesburg 10. Beijing to Shanghai https://twitter.com/spectatorindex/sta...

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by kitplane01
Tue Aug 21, 2018 5:53 am
Forum: Aviation Hobby
Topic: Where does flightradar24 get planned aircraft data from?
Replies: 8
Views: 2419

Re: Where does flightradar24 get planned aircraft data from?

Flightradar24 lists the registration of the aircraft that will be used on flights a few days from now for some airlines in NA and Europe. I believe this is one of the most powerful features of FR24, and regardless of how accurate it is (sometimes it's not, based on experience), it is a great featur...

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by kitplane01
Tue Aug 21, 2018 5:49 am
Forum: Civil Aviation
Topic: NCA to offload 747-400Fs, focus on 747-8F platform as part of restructuring plan
Replies: 3
Views: 1689

Re: NCA to offload 747-400Fs, focus on 747-8F platform as part of restructuring plan

Nippon Cargo Airlines on 17 August submitted plans to Japan’s Ministry of Land, Infrastructure, Transportation and Tourism (MLIT) that centers around consolidating the fleet and maintenance operations to a single platform based on the 747-8F. The detailed improvement plan was in response to a manda...

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by kitplane01
Fri Aug 17, 2018 7:34 am
Forum: Civil Aviation
Topic: Death of 747-400 Greatly Exaggerated
Replies: 129
Views: 19202

Re: Death of 747-400 Greatly Exaggerated

Precisely. BA have them for 6 more years. I’d imagine LHs stay around for a while too among others. It would be interesting to know where the last -400 will fly. With the way oil prices have gone in the last year or so BA and LH could well accelerate retirements. I can’t comment on other airlines b...

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by kitplane01
Wed Aug 15, 2018 10:03 pm
Forum: Civil Aviation
Topic: Southwest latest airline to restrict service, emotional support animals
Replies: 30
Views: 3859

Re: Southwest latest airline to restrict service, emotional support animals

Excluding service dogs (seeing eye dogs, rescue dogs, police/fire), everything should be a pet and charge $100 Lightsaber Are used to think that too. When I asked the guy in front of me at the hockey games why he brings his dog to a hockey game. His wife explained that he used to get angry all the ...

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by kitplane01
Mon Aug 13, 2018 3:59 am
Forum: Civil Aviation
Topic: Air India Privatization, by June-Failed sale. What next?
Replies: 768
Views: 55222

Re: Air India Privatization, by June-Failed sale. What next?

Air India is not going to just magically disappear! Not without significant "structural damage" that will make demonetisation look like a walk in the park. Air India's work force is about 1/70,000th that of the Indian workforce. Air India is about 1/700th of the total economy of India by ...

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by kitplane01
Mon Aug 13, 2018 3:50 am
Forum: Civil Aviation
Topic: Air India Privatization, by June-Failed sale. What next?
Replies: 768
Views: 55222

Re: Air India Privatization, by June-Failed sale. What next?

Prediction: The Indian government within the month will announce a plan to “revitalize” and “restore” Air India. It’s two main components will be a large pile of cash and a large pile of words. No real reforms will actually happen (but lots of words will be used). Air India will not be privatized b...

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by kitplane01
Sun Aug 12, 2018 5:55 pm
Forum: Civil Aviation
Topic: Air India Privatization, by June-Failed sale. What next?
Replies: 768
Views: 55222

Re: Air India Privatization, by June-Failed sale. What next?

Prediction: The Indian government within the month will announce a plan to “revitalize” and “restore” Air India. It’s two main components will be a large pile of cash and a large pile of words. No real reforms will actually happen (but lots of words will be used). Air India will not be privatized be...

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by kitplane01
Wed Aug 08, 2018 4:03 am
Forum: Civil Aviation
Topic: Air India Privatization, by June-Failed sale. What next?
Replies: 768
Views: 55222

Re: Air India Privatization, by June-Failed sale. What next?

@lightsaber I said $8B six days back in #616. The point you are missing is all debt is not equal. AV : WC is 50:50, so $4B:$4B 1) AV debt revenue generating frames @LIBOR + 0.25 - $3,4 Billion 2) AV debt non-rev frames @LIBOR + 0.25 - $600 Million 3) WC debt external commercial borrowing @5-8% ($1 ...

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by kitplane01
Sun Aug 05, 2018 6:15 am
Forum: Civil Aviation
Topic: Q400: the underrated aircraft type?
Replies: 107
Views: 13263

Re: Q400: the underrated aircraft type?

But it's just not the same plane. It's a 50% bigger plane with (probably) very few common parts. EDIT: even the different wing you'd mentioned previously is almost no different. It's just the standard wing of the 300 with a ~0.5 m plug at each wing root to move the engines outboard and increase the...

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by kitplane01
Sat Aug 04, 2018 8:49 am
Forum: Civil Aviation
Topic: Q400: the underrated aircraft type?
Replies: 107
Views: 13263

Re: Q400: the underrated aircraft type?

Did you know that the Q400 is about 50% bigger than the Q300. It does not share wings, fuselages, or engines. Really a different thing. The wing is very similar and developed directly from that of the 300, the fuselage is in essence just a stretch, and the engines are generally based on the same PW...

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by kitplane01
Sat Aug 04, 2018 2:38 am
Forum: Technical/Operations
Topic: Supersonic Business Jet Engines
Replies: 24
Views: 2022

Re: Supersonic Business Jet Engines

When it comes to atmospheric flight (not space flight) you have to have at least a unity of exhaust gas velocity if you want to travel at that speed and even then that's not a guarantee. So if the bypass air is moving at 550mph and the core air is moving at 700mph you could theoretically end up som...

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