Search found 156 matches

by MatthewDB
Tue Jul 09, 2019 11:57 pm
Forum: Civil Aviation
Topic: Delta improves intl Main Cabin experience
Replies: 156
Views: 20823

Re: Delta improves intl Main Cabin experience

An improvement would be less cramped seating on delta. Delta is one of the last remaining carriers offering 9 abreast on the 777, while the rest of the world has gone 10-abreast. They also have plenty of 7-abreast 767's and 8-abreast airbus so I think your complaint has no substance whatsoever. The...

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by MatthewDB
Wed Jul 03, 2019 6:05 pm
Forum: Civil Aviation
Topic: Delta improves intl Main Cabin experience
Replies: 156
Views: 20823

Re: Delta improves intl Main Cabin experience

Since a lot of corporate international flyers have to fly Y, does DL’s ability to demonstrate a more desirable Y experience (real or perceived) have any impact on its ability to sign more corporate contracts? Wouldn't know, but why would corporate contracts worry about minor (in the grand scheme of...

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by MatthewDB
Wed Jul 03, 2019 5:51 pm
Forum: Civil Aviation
Topic: Delta improves intl Main Cabin experience
Replies: 156
Views: 20823

Re: Delta improves intl Main Cabin experience

An improvement would be less cramped seating on delta. Space on an aircraft costs serious money. People who want to pay for it have First/Business and Comfort+ and/or Premium Select on over 90% of DL/DL Connection aircraft. Modest improvements in long-haul coach meal service (greatly overdue, IMHO)...

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by MatthewDB
Tue Jun 25, 2019 6:47 am
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments
Replies: 1979
Views: 226337

Re: SpaceX - Tests, Launches, Developments

Core booster seems to have missed the boat... went for a drink. Everything else looks OK. I loved the crowd reaction. Dang... wait, we didn't have high hopes on this one so whooo hooo. I'm hoping that we're going to get some good videos of the night double landing. This should be a good comparison ...

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by MatthewDB
Wed May 29, 2019 7:26 am
Forum: Military Aviation & Space Flight
Topic: Russia plays near Alaska
Replies: 28
Views: 2908

Re: Russia plays near Alaska

Planeflyer wrote:
Ok sounds reasonable assuming the bombers are flying w/o weapons. Anyone no for sure on this?


I'm betting they are flying with a full weapon load. Otherwise what's the point? During the cold war they certainly were.

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by MatthewDB
Fri Apr 19, 2019 6:44 am
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments
Replies: 1979
Views: 226337

Re: SpaceX - Tests, Launches, Developments

I wonder if they can recover the engines?

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by MatthewDB
Mon Apr 08, 2019 7:17 am
Forum: Technical/Operations
Topic: Power of control surface feel feedback
Replies: 9
Views: 1519

Power of control surface feel feedback

This is a question I've long wondered about, but the talk about the events around the to 737 MAX crashes has brought it back up. From what I understand, with mechanical (cable) / hydraulic controls, the force feedback is entirely from a feel computer applying backforce on the controls. Is that corre...

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by MatthewDB
Thu Dec 20, 2018 8:17 am
Forum: Civil Aviation
Topic: Oregon Aviation Thread - 2018
Replies: 1408
Views: 131357

Re: Oregon Aviation Thread - 2018

UA announced ORD-EUG/RDM today, on E175 equipment. EUG is year-round, RDM is seasonal, and both will be daily and will start on June 6, 2019. https://thepointsguy.com/news/united-ord-iah-regional-flights/ Cool! Back in the early aughts I did quite a few EUG-DEN trips on UA. The CRJ is a bit tight t...

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by MatthewDB
Thu Dec 13, 2018 1:59 am
Forum: Civil Aviation
Topic: Oregon Aviation Thread - 2018
Replies: 1408
Views: 131357

Re: Oregon Aviation Thread - 2018

I hate to see Southwest leave C. I feel this concourse has the best amenities. Appears it would balance out the airfield operations a bit, especially when they are using the 28's. Southwest would likely land and depart 28R mostly once on E. They could favor landing on 10L and pull right into their ...

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by MatthewDB
Fri Nov 23, 2018 11:36 pm
Forum: Travel, Polls & Preferences
Topic: Shooting the breeze with a WN pilot about Hawaii
Replies: 29
Views: 3102

Re: Shooting the breeze with a WN pilot about Hawaii

No way is WN going to destroy HA.... a large chunk of interisland is actually business travel, and I can almost guarantee those folks will stick with HA. Given the 717 vs. the 737 for interisland, it's the 717's advantage any day. The tourist side of it? Harder to say ... but with 10x the frequency...

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by MatthewDB
Fri Nov 23, 2018 11:30 pm
Forum: Civil Aviation
Topic: The Future Of Hawaiian Inter-Island Travel
Replies: 145
Views: 20786

Re: The Future Of Hawaiian Inter-Island Travel

If cooling is an issue, would running the smaller aircraft of a family help? I get that the 737-300 had trouble, but is just assuming all newer aircraft really a problem? The 737-300 was the largest of 737-3/4/5 so the engine was working the hardest of the three. For example, a 737-6/7/8/9 all use t...

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by MatthewDB
Fri Nov 23, 2018 11:21 pm
Forum: Civil Aviation
Topic: The Future Of Hawaiian Inter-Island Travel
Replies: 145
Views: 20786

Re: The Future Of Hawai'ian Inter-Island Travel

It’s going from 20 planes to 30-32 tails—hardly going to crowd the ramps. 20 717s Times 128 seats equal 2560 seats; divide 2560 by 78 seats equals 32 turboprops. Block-to-block times will only increase a small increment, but perhaps a few more tails. This isn’t insurmountable IF technology doesn’t ...

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by MatthewDB
Fri Nov 23, 2018 11:18 pm
Forum: Civil Aviation
Topic: The Future Of Hawaiian Inter-Island Travel
Replies: 145
Views: 20786

Re: The Future Of Hawai'ian Inter-Island Travel

If insufficient engine cool down time is the problem, develop a contraption that blows cold air into the engine during stops. Cheaper than developing a new engine. I would think just motoring the engines on the starter would do that. They could use ground air to give both cooling and motor air (I d...

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by MatthewDB
Tue Nov 13, 2018 9:51 am
Forum: Technical/Operations
Topic: Taxi out on one engine?
Replies: 65
Views: 6494

Re: Taxi out on one engine?

Starlionblue wrote:

Both engines at ground idle might well be too much power for taxi, so you have to keep braking.


I didn't think a turboprop made any thrust at disk.

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by MatthewDB
Tue Nov 13, 2018 8:46 am
Forum: Technical/Operations
Topic: Taxi out on one engine?
Replies: 65
Views: 6494

Re: Taxi out on one engine?

. Seems like single taxi out was common in the regional turboprops, too - I distinctly remember a woman who was concerned about the stationary prop one time. I've noted that too. I've only taken flights in Dash8 and Q400 turboprops so I don't know if there is a difference with the ATR. 2nd engine s...

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by MatthewDB
Mon Nov 12, 2018 7:50 am
Forum: Civil Aviation
Topic: Oregon Aviation Thread - 2018
Replies: 1408
Views: 131357

Re: Oregon Aviation Thread - 2018

Since everybody loves a good PDX vs SEA debate, I thought I’d look at some economic indicators to shed some light on why SEA has been growing exponentially more than PDX. The cliff notes version is that Seattle’s economy has grown exponentially more than Portland’s. Currently metro Seattle has the ...

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by MatthewDB
Mon Nov 12, 2018 7:43 am
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594466

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

... Ironically the Kalman filter was designed a half century ago to flight in space but is still not used to flight aircraft... The Kalman filter is used for position computation. It is used to combine the IRS with the GPS position. IRS position gives you a very accurate short term position. It als...

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by MatthewDB
Tue Nov 06, 2018 4:55 am
Forum: Civil Aviation
Topic: Lion Air 737MAX8 Crashed Jakarta to Pangkal Pinang
Replies: 3188
Views: 594466

Re: Lion Air 737MAX8 Crashed Jakarta to Pangal Pinang

SO many crashes and incidents lately are in some way related to unreliable airspeed, pitot static failures, etc.. MANY (if not all) have significant issues and failures leading to the events, but aviation safety has always been about removing that "link" in the chain which causes the high...

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by MatthewDB
Mon Oct 01, 2018 3:29 pm
Forum: Civil Aviation
Topic: Oregon Aviation Thread - 2018
Replies: 1408
Views: 131357

Re: Oregon Aviation Thread - 2018

If I could only arrive in the US via PDX, I'd consider Global Entry not worth it. I don't think it has actually saved me much time at PDX since even the regular line is comparable to the Global Entry time at places like LAX. It's been a mixed bag at YVR; for Canadian domestic flights customs has bee...

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by MatthewDB
Mon Oct 01, 2018 4:24 am
Forum: Technical/Operations
Topic: How efficient can a jet engine get in the future ?
Replies: 19
Views: 3132

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

I disagree on compressors being perfect. There is several percent to gain. In particular optimizing the output of the low compressor into the high compressor. Where is the loss in the compressor transition? Is this just because they can't match optimal performance at different power settings becaus...

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by MatthewDB
Mon Oct 01, 2018 4:11 am
Forum: Civil Aviation
Topic: How come quads outlasted trijets?
Replies: 86
Views: 15343

Re: How come quads outlasted trijets?

Past that, technology has improved such that most trijet airliners have been replaced by large twins with the same performance capability. Quads exist where the additional engine performance is needed (747, A380; the A340 has largely been rendered obsolete by newer twins). Did the A380 have to be a...

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by MatthewDB
Mon Oct 01, 2018 4:04 am
Forum: Civil Aviation
Topic: Oregon Aviation Thread - 2018
Replies: 1408
Views: 131357

Re: Oregon Aviation Thread - 2018

I agree. And not to mention, Seattle's constrained and run down facilities compared to the dream airport that is PDX. SEA punches way above its weight and a lot of that is supported by PDX passengers. While I'm happy PDX has the intl flights it has, I think we can do better. I can't believe we only...

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by MatthewDB
Mon Oct 01, 2018 3:50 am
Forum: Travel, Polls & Preferences
Topic: Premium Economy is it the new old Business Class
Replies: 10
Views: 1727

Re: Premium Economy is it the new old Business Class

I wonder if companies that now allow J flying will force their employees to fly Premium Economy come the next downturn. or Will business class always be allowed? I used to work for Hewlett Packard. They banned business class travel during the dot com bust just after 2000. If you took more than 3 cr...

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by MatthewDB
Mon Sep 24, 2018 6:38 am
Forum: Technical/Operations
Topic: What exactly is the fuel-inerting system on 747's?
Replies: 51
Views: 8335

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

There are hardly "no events" of tanks blowing up. There is this one too: https://en.wikipedia.org/wiki/Philippine_Airlines_Flight_143 Jet fuel is quite a bit more dangerous to handle than gasoline or diesel. Gasoline in a closed tank at most outdoor temperatures won't burn because the gaso...

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by MatthewDB
Sat Sep 08, 2018 4:47 am
Forum: Technical/Operations
Topic: Getting the shortest takeoff run
Replies: 20
Views: 2252

Re: Getting the shortest takeoff run

Years ago I was transiting in Phoenix when a sandstorm whipped up. They announced to board quickly and that all airplanes were promptly departing. I was in a 757-200. We pushed back before everyone was seated, and the pilot announced that we were cleared for #1 departure and we took off at the faste...

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by MatthewDB
Mon Aug 13, 2018 2:39 am
Forum: Civil Aviation
Topic: Updated: QX employee steals and crashes Q400 near SEA
Replies: 705
Views: 99818

Re: Updated: AS employee steals and crashes Q400 at SeaTac

Future airplanes should have two pilots, one in the airplane and the other at a ground control station..Steal the airplane or deviate? and sorry, ground pilot has the airplane. Earthquake wrecks the ground station? Ok, sky pilot has it. What an incredible gift to terrorists! They don't even have to...

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by MatthewDB
Mon Aug 13, 2018 2:30 am
Forum: Civil Aviation
Topic: Updated: QX employee steals and crashes Q400 near SEA
Replies: 705
Views: 99818

Re: Updated: AS employee steals and crashes Q400 at SeaTac

Future airplanes should have two pilots, one in the airplane and the other at a ground control station..Steal the airplane or deviate? and sorry, ground pilot has the airplane. Earthquake wrecks the ground station? Ok, sky pilot has it. What an incredible gift to terrorists! They don't even have to...

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by MatthewDB
Mon Aug 13, 2018 2:28 am
Forum: Civil Aviation
Topic: Updated: QX employee steals and crashes Q400 near SEA
Replies: 705
Views: 99818

Re: Updated: AS employee steals and crashes Q400 at SeaTac

https://web.archive.org/web/20120511191 ... -links.cfm
-->

twinotter wrote:
Any "code"would end up being the same as 99% of secure doors at every airport: 1234.


Bruce G. Blair claims that the first US nuclear bombs with security codes were all set to 00000000. https://web.archive.org/web/20120511191 ... -links.cfm

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by MatthewDB
Mon Aug 13, 2018 2:21 am
Forum: Civil Aviation
Topic: Updated: QX employee steals and crashes Q400 near SEA
Replies: 705
Views: 99818

Re: AS Employee steals Q400 at SeaTac

Would one person be able to take off and fly an A380 ? Sure...why not? If a plane is not parked nose first at a gate, anybcommercial plane is stealable. Pull the chocks, start the engines and go. Much less likely - you can’t enter a larger plane, much less an A380, without stairs. A Q400 does not n...

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by MatthewDB
Thu Aug 02, 2018 5:51 pm
Forum: Travel, Polls & Preferences
Topic: TSA considering cutting security screenings at small airports
Replies: 43
Views: 3334

Re: TSA considering cutting security screenings at small airports

Getting rid or shrinking TSA is a great idea, however, it would need to be replaced with private screeners. So, going back to pre-9/11, then? People need to be careful what they wish for. I'm sure this isn't universal, but a lot of people on this site probably don't remember what "security&quo...

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by MatthewDB
Sun Jul 08, 2018 2:21 am
Forum: Travel, Polls & Preferences
Topic: Why so many long haul flight to India arrive at midnight?
Replies: 13
Views: 2447

Re: Why so many long haul flight to India arrive at midnight?

I have heard the explanation that night shift employees are paid more. It makes sense to have the low cost employees in India work at night and the higher cost European employees to work day shift. I have no idea if it is true or not, just an explanation I've heard. As for travel: If you're flying f...

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by MatthewDB
Sun Jun 24, 2018 4:19 am
Forum: Technical/Operations
Topic: Pilot's last flight
Replies: 48
Views: 6246

Re: Pilot's last flight

Starlionblue wrote:
CosmicCruiser wrote:
AR385 wrote:
I thought they can continue flying cargo aircraft.


Not if its under FAR 121. I had to go at 65


Many people I meet seem to have the impression that cargo aircraft operate under a less stringent set of rules than passenger aircraft. It's weird.


They're clearly unfamiliar with El Al Flight 1862.

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by MatthewDB
Sun Jun 24, 2018 4:08 am
Forum: Civil Aviation
Topic: Oregon Aviation Thread - 2018
Replies: 1408
Views: 131357

Re: Oregon Aviation Thread - 2018

Commercial flights could come back to Salem (SLE) by late 2019: https://www.kgw.com/article/news/local/marion-county/commercial-flights-proposed-for-salem-airport/283-563877353?utm_campaign=trueAnthem:+Trending+Content&utm_content=5b20ae3404d301774c5ab6ff&utm_medium=trueAnthem&utm_sourc...

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by MatthewDB
Sun Jun 24, 2018 3:47 am
Forum: Technical/Operations
Topic: Windmilling with a tail wind & lubrication
Replies: 8
Views: 1437

Re: Windmilling with a tail wind & lubrication

I usually see 1.5-2.0 n1 when it is windmilling in a stiff wind which amounts to about a hundred rpm. That's about what I'd guess they were spinning at. More than one rotation per second. Not fast enough to cause issues. I usually see 1.5-2.0 n1 when it is windmilling in a stiff wind which amounts ...

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by MatthewDB
Sun Jun 24, 2018 3:42 am
Forum: Technical/Operations
Topic: Windmilling with a tail wind & lubrication
Replies: 8
Views: 1437

Re: Windmilling with a tail wind & lubrication

N2 doesn’t typically windmill. There just isn’t enough velocity to do it. What you’re seeing is N1 or the Fan. I’ve never seen a prohibition against, nor an inspection required for windmilling on the ground due to surface winds. Cleary I reversed the terminology... Yes, all I could see is the fan a...

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by MatthewDB
Mon Jun 18, 2018 11:51 pm
Forum: Technical/Operations
Topic: Windmilling with a tail wind & lubrication
Replies: 8
Views: 1437

Windmilling with a tail wind & lubrication

I recently transited through AMS, and went for a bus ride across the airport. It was quite blustery and I noticed many of the aircraft were windmilling pretty good. I noticed that for the aircraft parked tail to the wind, the windmilling rotated the fan in reverse. This led me to wonder, is there an...

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by MatthewDB
Mon May 28, 2018 6:56 am
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments
Replies: 1979
Views: 226337

Re: SpaceX - Tests, Launches, Developments

Bouncy castle/balloons are for stage 2 return (probably on land).Fairings 'have' to land at sea and can't get drenched in salt water hence the 'catchers Mit' boat. What is on the faring that can't be made "salt-proof"? I would think if they made the parts either salt resistant or easily r...

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by MatthewDB
Wed May 23, 2018 6:45 am
Forum: Civil Aviation
Topic: Oregon Aviation Thread - 2018
Replies: 1408
Views: 131357

Re: Oregon Aviation Thread - 2018

When we start to see the number of flights to/from PDX-SEA start to decline (currently ~30/day each way) we’ll start getting more domestic and international nonstops. As long as passengers to/from Portland continue to accept connecting thru Seattle, we’ll get squat. The airline business model of us...

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by MatthewDB
Fri May 11, 2018 6:29 am
Forum: Civil Aviation
Topic: Oregon Aviation Thread - 2018
Replies: 1408
Views: 131357

Re: Oregon Aviation Thread - 2018

twincommander wrote:
MatthewDB wrote:
Anyone know why there was an Antinov 124 next to 28R/10L today?


Ramp space in PDX is cheaper than in PAE...


That still leaves us completely clueless....

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by MatthewDB
Thu May 10, 2018 5:08 am
Forum: Civil Aviation
Topic: Oregon Aviation Thread - 2018
Replies: 1408
Views: 131357

Re: Oregon Aviation Thread - 2018

Anyone know why there was an Antinov 124 next to 28R/10L today?

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by MatthewDB
Thu May 10, 2018 4:42 am
Forum: Civil Aviation
Topic: AA gate agent asks nursing mom "How many boobs do you have"
Replies: 73
Views: 9533

AA gate agent asks nursing mom "How many boobs do you have"

- Breastfeeding mom Kelsey Myers was reduced to tears before boarding a flight - Myers was preparing to travel home from LAX to ORD with American Airlines - While boarding, she was stopped by two airline employees who told her she was carrying too many bags - Myers assured them she was well-informed...

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by MatthewDB
Sat Apr 28, 2018 2:14 pm
Forum: Civil Aviation
Topic: Family Suing AA Over Death of Passenger
Replies: 256
Views: 19300

Re: Family Suing AA Over Death of Passenger

People keep mentioning "over-weight" or "dumping fuel." Would that be needed at this point in the flight? The diversion would have saved 90 minutes at most. I would think the trip from Hawaii across the Pacific would have burned more than enough fuel to lighten the airplane to a ...

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by MatthewDB
Sun Apr 01, 2018 8:09 pm
Forum: Civil Aviation
Topic: Aeroflot sent American citizens to New Delhi
Replies: 89
Views: 12121

Re: Aeroflot sent American citizens to New Delhi

I have never heard of using Aeroflot and Moscow as a one stop to India from the US! My, that is really asking for it! It seems they got what they paid for. It’s like the international version of travel hell from Allegiant or Spirit airlines. Western US to India flights suck for routing options. Mos...

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by MatthewDB
Sun Apr 01, 2018 7:23 pm
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments
Replies: 1979
Views: 226337

Re: SpaceX - Tests, Launches, Developments

https://www.space.com/40153-spacex-laun ... tions.html
-->

Apparently SpaceX needs permits to show video of the earth from space and doesn't have them (yet). This means launches will cut video at some point during the 2nd stage burn.

https://www.space.com/40153-spacex-laun ... tions.html

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by MatthewDB
Tue Mar 20, 2018 6:19 am
Forum: Civil Aviation
Topic: Possibility of L-1011 or MD-11 NextGen?
Replies: 38
Views: 5397

Re: Possibility of L-1011 or MD-11 NextGen?

Looking at the Ge9X engine, one would think that aircraft will need more engines if they needed more thrust. These very high bypass turbofans might have reached the fan design limits. So, never say no to a new three holer design! That makes for a very large S-duct or hole through the vertical stabi...

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by MatthewDB
Tue Mar 20, 2018 6:17 am
Forum: Civil Aviation
Topic: Possibility of L-1011 or MD-11 NextGen?
Replies: 38
Views: 5397

Re: Possibility of L-1011 or MD-11 NextGen?

What if Airbus rolled out with a tri-jet A360, or Boeing with the 797? They could easily make a fuel-efficient tri-jet. It's just a matter of someone sitting down and creating one. I don't think we'll see it from Boeing since they're looking towards the gap between the 737 and the 777 as the future...

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by MatthewDB
Tue Mar 20, 2018 5:12 am
Forum: Civil Aviation
Topic: Passengers fight on Southwest flight
Replies: 65
Views: 9110

Re: Passengers fight on Southwest flight

I am totally serious. And it's not breaking the "rules" to do so. Though, it's obviously breaking one of your rules. I'm one of those people too. I didn't know there was a rule. My carry on is smaller than the limit, I take a checked bag when needed. I don't do 10 rows, but I will do 3-5....

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by MatthewDB
Tue Mar 20, 2018 4:59 am
Forum: Travel, Polls & Preferences
Topic: Packaged food must come out for TSA screening?
Replies: 47
Views: 2221

Re: TSA now wants food out of bags for inspection?

Had this happen in ROC a couple months ago. They wanted all food taken out. Unfortunately I had a bunch of stuff; my smaller bag is mainly snacks and quick meals. Combined with having to take out my iPads there wasn't much left in the bag - almost everything was outside the bag in a plastic bin, on...

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by MatthewDB
Sat Mar 17, 2018 3:34 am
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments
Replies: 1979
Views: 226337

Re: SpaceX - Tests, Launches, Developments

Tugger is correct, but I have to add that much of the force absorbed by the water is acoustic vibrations. By sheer fact of no atmosphere on the Moon, and Mars having less than 0.1% of Earth's atmosphere (according to wiki, so please correct me if I am wrong), there simply aren't enough gaseous mole...

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by MatthewDB
Sat Mar 17, 2018 3:19 am
Forum: Technical/Operations
Topic: Plane Flying with Landing Gear Down
Replies: 22
Views: 3205

Re: Plane Flying with Landing Gear Down

I can not speak about the 777 but on my type (A320) you rarely get hot brakes in flight (it is however a common occurrence on ground). In fact I only got the warning one time (on an other flight it was only 60° below the warning and it was a short flight, therefore we decided to keep the gear down ...

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