Search found 3308 matches

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by kalvado
Wed Jun 16, 2021 4:19 pm
Forum: Civil Aviation
Topic: CX Working With Airbus on Single-Pilot System for A350 With 2025 EIS
Replies: 254
Views: 23243

Re: CX Working With Airbus on Single-Pilot System for A350 With 2025 EIS

Would be interesting to hear from long haul pilots what they think about being left in the cockpit alone for hours on end with not a whole lot to do and no one to talk to. Would be interesting to hear from passengers what they think about one pilot up front, alone. Inasmuch as I think it's inevitab...

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by kalvado
Wed Jun 16, 2021 3:40 pm
Forum: Civil Aviation
Topic: CX Working With Airbus on Single-Pilot System for A350 With 2025 EIS
Replies: 254
Views: 23243

Re: CX Working With Airbus on Single-Pilot System for A350 With 2025 EIS

Sleep is pretty reliably detected by cheap fitness trackers, as motion and heartbeat. Dead-hand alertness buttons are there for ages. Full and undivided attention may be not realistic to ask anyway, instrument scan on periodic alert, periodically confirmed by some action is probably a more realisti...

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by kalvado
Wed Jun 16, 2021 3:26 pm
Forum: Civil Aviation
Topic: CX Working With Airbus on Single-Pilot System for A350 With 2025 EIS
Replies: 254
Views: 23243

Re: CX Working With Airbus on Single-Pilot System for A350 With 2025 EIS

Right, even to cover the most basic issues it seems the system that detects inactivity would have to be pretty flawless and/or the pilot would have to ask for help at the earliest possible onset of any issue, and we know most human beings hate to ask for help.. I assume they can make sure help is s...

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by kalvado
Wed Jun 16, 2021 3:04 pm
Forum: Civil Aviation
Topic: CX Working With Airbus on Single-Pilot System for A350 With 2025 EIS
Replies: 254
Views: 23243

Re: CX Working With Airbus on Single-Pilot System for A350 With 2025 EIS

Right, even to cover the most basic issues it seems the system that detects inactivity would have to be pretty flawless and/or the pilot would have to ask for help at the earliest possible onset of any issue, and we know most human beings hate to ask for help.. I assume they can make sure help is s...

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by kalvado
Wed Jun 16, 2021 3:00 pm
Forum: Civil Aviation
Topic: CX Working With Airbus on Single-Pilot System for A350 With 2025 EIS
Replies: 254
Views: 23243

Re: CX Working With Airbus on Single-Pilot System for A350 With 2025 EIS

So a catastrophic, sudden and unpredictable event occurs and the resting pilot is just going to wake up, jump out of the bunk, maybe throw some pants on and be alert enough to handle the emergency? There’s a reason that most company SOPs stipulate a period of wakefulness (about 15minutes) before re...

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by kalvado
Mon Jun 14, 2021 5:43 pm
Forum: Civil Aviation
Topic: GE, Safran announce new airliner engine for the mid 2030s
Replies: 51
Views: 6413

Re: GE, Safran announce new airliner engine for the mid 2030s

I think the elimination of contra-rotating is a big breakthrough. Less mass, less complexity, less opportunity for a rotating assembly to fail. The picture in the thread starter shows the back row of blades are static guide vanes. It also leaves the door open for another engine manufacturer to comp...

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by kalvado
Fri Jun 11, 2021 6:02 pm
Forum: Civil Aviation
Topic: American Airlines invests in up to 350 eVTOLs
Replies: 47
Views: 7919

Re: American Airlines invests in up to 350 eVTOLs

What type of joke is this? First, you have United announcing plans to purchase supersonic aircraft, then you have American announcing electric aircraft. What is Delta up to next? Attracting forward looking investors with some bailout cash to burn. This $25M spending may pay off just from short term...

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by kalvado
Fri Jun 04, 2021 3:59 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 260062

Re: Boeing CEO's Comments On Their Next Airplane

What are we looking at? IMO what we are looking at is the wrong approach, aiming at the market that the A321XLR has already saturated, instead of aiming for the gap above it. The article implies that the company is in no fiscal position to launch this any time soon, so I am not going to get too exc...

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by kalvado
Fri Jun 04, 2021 11:13 am
Forum: Civil Aviation
Topic: Reuters: The $15 billion jet dilemma facing Boeing's CEO
Replies: 105
Views: 16194

Re: Reuters: The $15 billion jet dilemma facing Boeing's CEO

I wonder if combination of jetbridge at the front door and stairs at the back door is a feasible option.
Those in wheelchairs get all possible comfort, those who are not afraid of rain get a chance to jump the queue.

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by kalvado
Tue Jun 01, 2021 8:46 pm
Forum: Civil Aviation
Topic: New York Times Story of Aviation CO2
Replies: 36
Views: 2792

Re: New York Times Story of Aviation CO2

Funny how the thread sidetracked into being conservative with money. Surely if you understand that, you can understand being conservative with the environment ? Being conservative with environment... It is a very broad statement. Most conservative approach, apparently, is eliminating effects of hug...

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by kalvado
Tue Jun 01, 2021 7:53 pm
Forum: Non-Aviation
Topic: Anonymous letter of Delta employee to a CEO.
Replies: 148
Views: 9651

Re: Anonymous letter of Delta employee to a CEO.

Not the most well written letter by any means, but I do agree with the general sentiment toward Bastian, DL, and other US airlines getting way too political over the last few years. Totally unnecessary and very likely counterproductive from a sales and marketing standpoint. I disagree on the sales/...

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by kalvado
Tue Jun 01, 2021 5:02 pm
Forum: Civil Aviation
Topic: New York Times Story of Aviation CO2
Replies: 36
Views: 2792

Re: New York Times Story of Aviation CO2

Offsets used to electrify the economy and accelerate wind/solar could be fairly tangible and transparent. Ground transportation has immense 'low hanging fruit'. Residence and commercial heating/cooling are another immense part of energy consumption. Concrete and steel production are another opportu...

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by kalvado
Fri May 28, 2021 3:41 pm
Forum: Civil Aviation
Topic: Southwest Airlines flight attendant loses two teeth after passenger assault
Replies: 123
Views: 19074

Re: Southwest Airlines flight attendant loses two teeth after passenger assault

You're conflating two things. There is due process for the law to determine if the incident warrants an assault conviction. As far as Southwest is concerned, they have a passenger conduct policy, and if in their view she violated it, that's it. There is zero connection to the criminal proceeding. J...

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by kalvado
Fri May 28, 2021 2:52 pm
Forum: Civil Aviation
Topic: Southwest Airlines flight attendant loses two teeth after passenger assault
Replies: 123
Views: 19074

Re: Southwest Airlines flight attendant loses two teeth after passenger assault

Assaulting an employee would be ground for refusal. Innocent until proven guilty in a court of law. You're conflating two things. There is due process for the law to determine if the incident warrants an assault conviction. As far as Southwest is concerned, they have a passenger conduct policy, and...

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by kalvado
Fri May 28, 2021 12:39 am
Forum: Civil Aviation
Topic: Southwest Airlines flight attendant loses two teeth after passenger assault
Replies: 123
Views: 19074

Re: Southwest Airlines flight attendant loses two teeth after passenger assault

Can you show us the law that says that a private company has an obligation to provide service to everyone? Remember the signs "we have the right to refuse service", "no shirt, no shoes, no service" and the like? Are we talking about "no shirt" or ban by person? Airline...

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by kalvado
Thu May 27, 2021 9:47 pm
Forum: Civil Aviation
Topic: Southwest Airlines flight attendant loses two teeth after passenger assault
Replies: 123
Views: 19074

Re: Southwest Airlines flight attendant loses two teeth after passenger assault

As stated, as long as it’s not for legally discriminatory reasons (eg against a protected class) it’s allowed. The ACLU wouldn’t take up the case, and I’m not sure why you think the court of public opinion would take the side of someone accused (and probably convicted by time of trial) of punching ...

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by kalvado
Wed May 26, 2021 6:23 pm
Forum: Non-Aviation
Topic: Important Bridge in Memphis Shut Down by Crack
Replies: 44
Views: 3874

Re: Important Bridge in Memphis Shut Down by Crack

ummmm.... not even close. There are so many reasons why inspectors did not report the crack in the bridge. Maybe they were hung over? Maybe they were having side conversations? Maybe this is their second or third job? Maybe they were also on the budget committee? So many theories as to why the brid...

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by kalvado
Wed May 26, 2021 3:27 pm
Forum: Civil Aviation
Topic: Southwest Airlines flight attendant loses two teeth after passenger assault
Replies: 123
Views: 19074

Re: Southwest Airlines flight attendant loses two teeth after passenger assault

Any private business (like WN) has the right to refuse service to any customer for their actions as long as it is not based on bias against a federally protected class of people. Good luck winning cases like these. Bans imposed after a passenger was convicted in common court may be defensible. With...

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by kalvado
Wed May 26, 2021 2:48 pm
Forum: Civil Aviation
Topic: Southwest Airlines flight attendant loses two teeth after passenger assault
Replies: 123
Views: 19074

Re: Southwest Airlines flight attendant loses two teeth after passenger assault

You have got to be kidding me. An employee of the airline (a business) was brutally assaulted by a customer. There should be no option for attacker to fly ever again. No different from any other business having a no-trespass against someone. Should get a fine, jail time, and the ban. There is a dif...

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by kalvado
Wed May 26, 2021 1:52 pm
Forum: Civil Aviation
Topic: Southwest Airlines flight attendant loses two teeth after passenger assault
Replies: 123
Views: 19074

Re: Southwest Airlines flight attendant loses two teeth after passenger assault

Does SWA have a No Fly list? If yes, how about a lifetime ban? Just inches away from the mouth are your eyes.... thankfully they were damaged I don't understand the popularity of flight bans in this forum. Airlines aren't law enforcement agencies. Carriers aren't offering due process rights. The in...

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by kalvado
Wed May 26, 2021 1:29 pm
Forum: Civil Aviation
Topic: Southwest Airlines flight attendant loses two teeth after passenger assault
Replies: 123
Views: 19074

Re: Southwest Airlines flight attendant loses two teeth after passenger assault

Maybe this is a dumb question, but how does it work on an airline with open seating to identify an unruly passenger? How would Southwest know which name on the manifest is causing issues? Would they have to basically involve airport police upon arrival? I imagine this is an easier task on airlines ...

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by kalvado
Wed May 26, 2021 9:22 am
Forum: Non-Aviation
Topic: Important Bridge in Memphis Shut Down by Crack
Replies: 44
Views: 3874

Re: Important Bridge in Memphis Shut Down by Crack

Did the inspector overlook the crack because of lack of training? One theory could be that the inspector knew how much money shutting the bridge and repairing the crack would be so he said nothing because both states would balk at the price or simply kick the can down the road, make a temporary rep...

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by kalvado
Tue May 25, 2021 5:58 pm
Forum: Non-Aviation
Topic: Important Bridge in Memphis Shut Down by Crack
Replies: 44
Views: 3874

Re: Important Bridge in Memphis Shut Down by Crack

So there was no inflation or even setting the groundwork for inflation 2016-2020? Anything not to blame dear leader, I guess. But the most interesting thing is "both sides do it" and then you point out that both sides do NOT do it. Republicans were in control of government spending roughl...

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by kalvado
Mon May 24, 2021 6:55 pm
Forum: Civil Aviation
Topic: Self-flying planes
Replies: 10
Views: 1696

Re: Self-flying planes

It's all good until something goes wrong. If the electrical system fails would you be ok with basically just flying straight into the nearest hill? Of course, that is to be compared with CFIT which never happened in piloted operations Right, but that could still happen and you'd be adding another d...

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by kalvado
Mon May 24, 2021 6:53 pm
Forum: Non-Aviation
Topic: Important Bridge in Memphis Shut Down by Crack
Replies: 44
Views: 3874

Re: Important Bridge in Memphis Shut Down by Crack

A bill backed by President Biden was introduced in Congress. The first one, Republicans said "NO!" and demanded bipartisanship and compromise. Democrats changed some parts of the bill and came back and Republicans said "NO!" and demanded bipartisanship. Republicans had Congress ...

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by kalvado
Sun May 23, 2021 8:40 pm
Forum: Technical/Operations
Topic: A321XLR’s rear fuel tank demands special fire-protection conditions
Replies: 224
Views: 48286

Re: A321XLR’s rear fuel tank demands special fire-protection conditions

IS the Xtra tank actually in inside the pressurized fuselage domain? The center wing box, MLG well, .. isn't in pressurized domain either! (but inside the fuselage contour.) Good points. It doesn't make sense to exchange fuel vapors with the cabin air, so they probably aren't at cabin pressure. All...

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by kalvado
Sun May 23, 2021 6:16 pm
Forum: Non-Aviation
Topic: Belarus intercepts Ryanair flight from ATH to VNO
Replies: 261
Views: 32739

Re: Belarus intercepts Ryanair flight from ATH to VNO

As for unprecedented.. anyone remembers Bolivian president's plane landing in Austria over Snowden-on-board suspicion?

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by kalvado
Sat May 22, 2021 5:34 pm
Forum: Non-Aviation
Topic: Important Bridge in Memphis Shut Down by Crack
Replies: 44
Views: 3874

Re: Important Bridge in Memphis Shut Down by Crack

Wouldn't it be someone else, like the State DOT, to decide what to do about a crack in a bridge? I know that WA DOT has generally had a number of bridges on what might be called 'watch'. The inspector sees and reports, the state engineers research and determine what actions are required. I'm not an...

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by kalvado
Sat May 22, 2021 12:24 pm
Forum: Non-Aviation
Topic: Important Bridge in Memphis Shut Down by Crack
Replies: 44
Views: 3874

Re: Important Bridge in Memphis Shut Down by Crack

That infrastructure jobs program can’t come soon enough. Get with the program GOP. Developed countries should not have infrastructure falling apart. This happens no matter who is in power. Infrastructure isn't sexy and no one wants to pay for it. Both sides give infrastructure lip service and then ...

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by kalvado
Fri May 21, 2021 5:15 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 260062

Re: Boeing CEO's Comments On Their Next Airplane

Context is provided by what I replied to initially. And yes, airlines have wanted the most efficient jets, they just happen to be slower. The post being quoted was the one below where as you can see talk was how do you cut 80 or minutes off an 8 hour flight. Do airlines care to go faster? Well, not...

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by kalvado
Fri May 21, 2021 3:07 pm
Forum: Civil Aviation
Topic: OSHA Issues Guidance on Adverse Vaccine Reactions - Industry Repercussions?
Replies: 13
Views: 1300

Re: OSHA Issues Guidance on Adverse Vaccine Reactions - Industry Repercussions?

Unless one or more of the COVD-19 vaccines is significantly less safe than is presently understood, this is pretty much a non-event. All vaccines have reported adverse events, and any number of employers require various vaccinations. The COVID-19 vaccine isn't different or special. If everyone beli...

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by kalvado
Fri May 21, 2021 3:04 pm
Forum: Civil Aviation
Topic: OSHA Issues Guidance on Adverse Vaccine Reactions - Industry Repercussions?
Replies: 13
Views: 1300

Re: OSHA Issues Guidance on Adverse Vaccine Reactions - Industry Repercussions?

Pretty reasonable - if employer goes above and beyond government requirements, they have to bear the consequences. It is more nuanced for other settings, such as schools and colleges which require vaccinations for many other conditions, and used to do that for a long time. Those are government manda...

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by kalvado
Fri May 21, 2021 1:47 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 260062

Re: Boeing CEO's Comments On Their Next Airplane

Agreed, but airlines are not clamoring to go slower, which is what you said. The cruise speeds we have are already where they are because of optimisation of costs (which involves fuel) in the round. Unless fuel costs change dramatically then I cannot see a reason why the optimisations would fall ve...

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by kalvado
Sat May 15, 2021 2:57 pm
Forum: Civil Aviation
Topic: Tri-wing concept claims to cut fuel consumption by 70%
Replies: 80
Views: 15635

Re: Tri-wing concept claims to cut fuel consumption by 70%

No way that wing will do M0.9 without sweep Wing is seemingly inspired by U-2, which was flying on 0.75 range. It had a relatively high L/D=24, which these guys say can be increased to almost 40, low wing loading of 200 kg/m2, and flew as high as 70 k feet (50k listed for triwing) An instant proble...

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by kalvado
Sun May 09, 2021 1:54 pm
Forum: Technical/Operations
Topic: What is the minimum battery power density needed for a 2000nm range?
Replies: 20
Views: 2888

Re: What is the minimum battery power density needed for a 2000nm range?

It doesn't even need to be hazardous materials. Water reservoirs are used for energy storage. But I digress. For any energy storage system, unintended release of stored energy is a hazard, and the more energy is stored, the bigger the hazard. If storage is via molecular chemical energy, material wi...

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by kalvado
Sun May 09, 2021 1:21 pm
Forum: Civil Aviation
Topic: Self-flying planes
Replies: 10
Views: 1696

Re: Self-flying planes

A Bay Area startup is working to crack the code on self-flying planes. I went up for a demonstration flight and saw how well the tech worked, even on a 27-year-old Cessna 208B Grand Caravan. https://www.businessinsider.com/flying-on-self-flying-plane-convinced-its-future-of-aviation-2021-5 It's all...

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by kalvado
Sun May 09, 2021 12:23 pm
Forum: Technical/Operations
Topic: What is the minimum battery power density needed for a 2000nm range?
Replies: 20
Views: 2888

Re: What is the minimum battery power density needed for a 2000nm range?

Basically this gets into semantics about what a "battery" even is. A battery is a whole bunch of hazardous chemicals that contain energy. Hydrogen is an example of a substance that can be converted into electricity. The power density would need to be 50% as good as Jet-A to accomplish wha...

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by kalvado
Sat May 08, 2021 4:27 pm
Forum: Technical/Operations
Topic: EASA Enigma - Any specific reason?
Replies: 14
Views: 2701

Re: EASA Enigma - Any specific reason?

. One thing under US law that’s nearly impossible to do is write laws that would target populations based upon race, national origin, religion or sex which is what the exceptions the Euros wanted would have functionally done. One thing which can easily be done, though, is to target based on citizen...

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by kalvado
Sat May 08, 2021 3:19 pm
Forum: Technical/Operations
Topic: EASA Enigma - Any specific reason?
Replies: 14
Views: 2701

Re: EASA Enigma - Any specific reason?

. One thing under US law that’s nearly impossible to do is write laws that would target populations based upon race, national origin, religion or sex which is what the exceptions the Euros wanted would have functionally done. One thing which can easily be done, though, is to target based on citizen...

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by kalvado
Fri May 07, 2021 12:05 pm
Forum: Technical/Operations
Topic: What is the minimum battery power density needed for a 2000nm range?
Replies: 20
Views: 2888

Re: What is the minimum battery power density needed for a 2000nm range?

Thinking about it... there are 3 energy components required to reach the top of descent. There is energy required to climb to a flight level, say 10 km for simplicity. E=mgh, that is 28 Wh/kg of gross weight There is energy required to accelerate to cruise speed, say 250 m/s (486 knots). E=mv^2/2=8....

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by kalvado
Fri May 07, 2021 1:00 am
Forum: Technical/Operations
Topic: What is the minimum battery power density needed for a 2000nm range?
Replies: 20
Views: 2888

Re: What is the minimum battery power density needed for a 2000nm range?

If we compare electric vs ICE cars the difference in efficiency is much bigger than double. It would make no sense to go electric without a huge efficiency advantage. For example Tesla Model S uses 18.0 kWh/100KM and comparable ICE vehicle Audi A6 uses 10L/100KM Assuming energy density of Gasoline ...

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by kalvado
Thu May 06, 2021 7:34 pm
Forum: Technical/Operations
Topic: FDX and UPS routes from Asia to EU
Replies: 11
Views: 2991

Re: FDX and UPS routes from Asia to EU

This routing is making sense going from Europe to HKG/CAN area and back, but not so much going to/coming from Japan or South Korea. Right now, Fedex flight CDG-NRT is routing through Kazakhastan which is far form the great circle route. https://fr24.com/FDX9683/279ac725 Definitely some very expensi...

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by kalvado
Thu May 06, 2021 7:29 pm
Forum: Technical/Operations
Topic: What is the minimum battery power density needed for a 2000nm range?
Replies: 20
Views: 2888

Re: What is the minimum battery power density needed for a 2000nm range?

Hello Vladex, Challenge accepted. :-) I take the following starting point: conventional airplanes burn approximately 1/30th of their current weight per hour - as an example an A320 would burn about 2.5t per hour at an assumed weight of 75t. Assuming an energy density of 12kWh per kg of kerosene, th...

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by kalvado
Thu May 06, 2021 4:16 pm
Forum: Non-Aviation
Topic: Herd Immunity Losing Out To Vaccine Hesitation and Virus Mutation
Replies: 205
Views: 14278

Re: Herd Immunity Losing Out To Vaccine Hesitation and Virus Mutation

You can talk to a hesitant friend to try to convince them but thats the extent of it. It doesn't work that way with anti-vaxxers. The more you explain, the deep they dig their heels. Every minute and dollar spent on convincing them is wasted. Problem of this approach is that you assume there is onl...

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by kalvado
Thu May 06, 2021 11:55 am
Forum: Non-Aviation
Topic: International Olympic Committee request Japanese nurses filling Olympic duty amid pandemic emergency declaration
Replies: 22
Views: 1618

Re: International Olympic Committee request Japanese nurses filling Olympic duty amid pandemic emergency declaration

https://www.theguardian.com/sport/2021/may/03/japan-nurses-voice-anger-at-call-to-volunteer-for-tokyo-olympics-amid-covid-crisis?CMP=Share_iOSApp_Other The International Olympic Committee have previously said they need 10000 medics for the Olympic games And now they told Japanese nurse organization...

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by kalvado
Fri Apr 30, 2021 1:51 pm
Forum: Civil Aviation
Topic: Why WN does not fly to Canada --
Replies: 97
Views: 16144

Re: Why WN does not fly to Canada --

I am guessing that they are working to remedy this since they are going to need to process CAD if they want BLI to work out. Cross-boarder customers can just go through the US website, give a Canadian credit card, and let the credit card company do the CAD to USD conversion, I would think. I do som...

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by kalvado
Fri Apr 30, 2021 12:47 pm
Forum: Non-Aviation
Topic: Lawmaker in Louisiana Suggests Teaching Good of Slavery
Replies: 50
Views: 4194

Re: Lawmaker in Louisiana Suggests Teaching Good of Slavery

You can not deny the economic impact of slavery and the impact it had for the economic development of the USA. The cotton produced in the South kept the mills in New England running. But also shipping companies and railroads were making good money, as well as banks. https://www.history.com/news/sla...

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by kalvado
Fri Apr 30, 2021 12:27 pm
Forum: Non-Aviation
Topic: Lawmaker in Louisiana Suggests Teaching Good of Slavery
Replies: 50
Views: 4194

Re: Lawmaker in Louisiana Suggests Teaching Good of Slavery

What are we supposed to discuss? The article doesn't mention what may or may not be good. Maybe cheap clothing? You f***king can't be serious? Next we are discussing the merits of cheap bullets for the Third Reich through forced labour? Of course I'm not serious. I assumed the sarcasm is obvious. A...

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by kalvado
Fri Apr 30, 2021 2:15 am
Forum: Non-Aviation
Topic: Cuomo blames Trump for losing a house seat
Replies: 37
Views: 3001

Re: Cuomo blames Trump for losing a house seat

Then maybe the private sector should keep up. It is not just pensions that are being funded from taxes. It is things like roads and education and public health care also. But, because people are not seeing immediate results, they start in with the whole "tax and spend liberals" trope. The...

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