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by CRJockey
Sun Feb 07, 2021 7:58 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 261739

Re: Boeing CEO's Comments On Their Next Airplane

IMO taking data unsanitized from an AoA sensor is a problem of technology. That's 1st or 2nd year college level stuff. Repeated activation and unchecked authority is 4th year college level stuff. No culture involved, just dreadful engineering. And that is for me a 100% company culture problem. It i...

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by CRJockey
Sat Feb 06, 2021 9:52 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 261739

Re: Boeing CEO's Comments On Their Next Airplane

My first program was in Fortran too, so right with you there. Other problems in software engineering (my field): 1. Young people not wanting to listen to/learn from the experience of people who have been programming for 10 or even 20 years longer than they have, and end up making needless and costl...

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by CRJockey
Sat Feb 06, 2021 7:40 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 261739

Re: Boeing CEO's Comments On Their Next Airplane

My first program was in Fortran too, so right with you there. Other problems in software engineering (my field): 1. Young people not wanting to listen to/learn from the experience of people who have been programming for 10 or even 20 years longer than they have, and end up making needless and costl...

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by CRJockey
Fri Feb 05, 2021 2:10 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 261739

Re: Boeing CEO's Comments On Their Next Airplane

In the end it only adds a few inches to the aisle. Put a 17,3" seat into the A321 you have nearly the same aisle width and still a seat width that has established itself as standard even for long haul. So is those few inches not the claim to fame that the A320 has over the 737, it is wider? Th...

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by CRJockey
Fri Feb 05, 2021 10:06 am
Forum: Military Aviation & Space Flight
Topic: USAF F-15EX News and Discussion Thread
Replies: 1045
Views: 175529

Re: USAF F-15EX News and Discussion Thread

I read somewhere that even with two engines cost of operating the new F-15 will be less than the F-35 per flight hours. That is somehow hard to imagine if you stick to flight associated cost. Surely, if you unfairly distribute any given share of R&D expenses over the fleet, I can see the F15 be...

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by CRJockey
Fri Feb 05, 2021 8:26 am
Forum: Site Related
Topic: Website is over-moderated
Replies: 232
Views: 26152

Re: Website is over-moderated

Seeing posts disappear have reached the point where I say "why bother?" There's a couple of opinionated members that make posts/replies with any basis in facts. If you point out the hypocrisy in certain positions, without making it personal, without breaking any of the rules, a PM or a re...

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by CRJockey
Fri Feb 05, 2021 8:22 am
Forum: Travel, Polls & Preferences
Topic: Airports with no fueling capability
Replies: 10
Views: 2578

Re: Airports with no fueling capability

Kithira perhaps? Although that could also be because of the short runway. Transavia used to serve Kithira from Amsterdam with the 737, although they had to stop for fuel afterwards elsewhere in Greece. They couldn't make it out of Kithira with enough fuel to make it to Amsterdam. Not sure if Kithir...

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by CRJockey
Fri Feb 05, 2021 8:14 am
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments - 2021
Replies: 464
Views: 63093

Re: SpaceX - Tests, Launches, Developments - 2021

As for SN9, I think the twitter discussion Musk was having with a few enthusiasts was more along the lines of starting all 3 engines for redundancy then, if they all start successfully, immediately shutting down the least healthy/useful one as the Raptor can't be throttled low enough for a 3 engine...

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by CRJockey
Fri Feb 05, 2021 7:48 am
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 261739

Re: Boeing CEO's Comments On Their Next Airplane

Aren't we back at the same problem the NMA always had? Put in an extra aisle and you add too much weight compared to the A321 or A322. Do a single aisle and you are directly competing against the economies of scale of the A320. We have had a lot of discussion about possible solutions but the fact t...

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by CRJockey
Thu Feb 04, 2021 3:39 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 261739

Re: Boeing CEO's Comments On Their Next Airplane

alyusuph wrote:
Boeing should resurrect the 757 with more composites and a new engine


Absolutely agree with you. Wonder why nobody thought about it before you? You think they still have the tooling? I suggest it will sell a thousand copies.

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by CRJockey
Thu Feb 04, 2021 1:03 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 261739

Re: Boeing CEO's Comments On Their Next Airplane

The 808-3. The bread and butter model. With a 200 max capacity @28 pitch it will maximize crew potential. One on one replacement for the 737-8 but much lighter and more comfortable/flexible. A possible simple stretch to a 400 is possible over time with efficiency and MTOW improvements, subsequently...

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by CRJockey
Thu Feb 04, 2021 12:53 pm
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 261739

Re: Boeing CEO's Comments On Their Next Airplane

What of the 767-200? Yeah, what about this market rejected very ineffective cross section & fuselage length combination? Relax. I’m not disagreeing with you but just relax Thanks for worrying, but my relaxation level is at least 90 of 100 - even my Garmin watch says that ;-) Why do you think on...

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by CRJockey
Thu Feb 04, 2021 10:42 am
Forum: Civil Aviation
Topic: Boeing CEO's Comments On Their Next Airplane
Replies: 2290
Views: 261739

Re: Boeing CEO's Comments On Their Next Airplane

We must be reading different articles. The one I read had three variantss of different sizes. I'm not following why you think the smallest wouldn't match the 752 and the largest the 763. Because if it’s a wide body family the 240 seat variant (assuming 752 sized all econ) would have a length of som...

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by CRJockey
Mon Feb 01, 2021 8:09 pm
Forum: Technical/Operations
Topic: Calling out 80 knots
Replies: 39
Views: 5341

Re: Calling out 80 knots

The primary reason is to make sure the airspeed indicators are working and accurate when compared to each other. I have never heard the reason involving the "high-speed regime". Boeing and IIRC, Airbus use 100 knots as a "technique" for their "load shedding philosophy"...

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by CRJockey
Mon Feb 01, 2021 12:54 pm
Forum: Civil Aviation
Topic: 777-300ER Relevance
Replies: 95
Views: 28392

Re: 777-300ER Relevance

Well, what else would they say as owners of the assets? ;-)

With that said, I see no reason for the 77W to be any less relevant in a 787/350/779 world than the A330 was in a 787/350 world. 77Ws will be very useful planes with competitive total cost structure.

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by CRJockey
Sun Jan 31, 2021 9:14 pm
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments - 2021
Replies: 464
Views: 63093

Re: SpaceX - Tests, Launches, Developments - 2021

Something I always enjoy about the “insiders.” The ones that know aren’t the ones out telling everyone the problems. It’s almost certainly a very specific, and most likely predominantly administrative department that would handle this type of info. And they aren’t out telling the world their update...

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by CRJockey
Sun Jan 31, 2021 9:08 pm
Forum: Military Aviation & Space Flight
Topic: NASA B747SP flying over Hamburg
Replies: 13
Views: 2085

Re: NASA B747SP flying in Airbus territory over Hamburg

An unexpected form of US-EU aviation industry cooperation? Ah, you mean as unexpected as CFMI with GE and Safran? Or Pratt & MTU? Or [insert dozens of examples of your own choice]? The industry is far beyond the superficial and often laughable competition dirty talk between Airbus and Boeing, w...

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by CRJockey
Sun Jan 31, 2021 8:46 am
Forum: Civil Aviation
Topic: A322 may have new engine, wings and 12 extra seats
Replies: 146
Views: 24638

Re: A322 may have new engine, wings and 12 extra seats

Any "feel" in fly by wire aircraft is some "fake" feel only put on top as artificial layer by some computer that could be confused. For the new MAX EASA even required a new procedure to set the basic stick shaker warning to off if the pilots feel annoyed by ongoing warnings. It ...

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Tugger wrote:
Found this pretty neat animation on how the fuel flows function for the Starship. Thought people here might find it interesting as well.
https://www.youtube.com/watch?v=KycyWcxWTcY

Tugg


Neat - thanks for sharing.

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by CRJockey
Tue Jan 26, 2021 3:33 pm
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments - 2021
Replies: 464
Views: 63093

Re: SpaceX - Tests, Launches, Developments - 2021

Getting to see weaknesses of designs by recovering the booster over and over again might do wonders for reliability. That, after all, is how safety improvements in aviation work on the design reliability side. That was the line before Challenger... turns out you also have to pay attention to what y...

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by CRJockey
Tue Jan 26, 2021 3:30 pm
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments - 2021
Replies: 464
Views: 63093

Re: SpaceX - Tests, Launches, Developments - 2021

Might turn into the same way ships or aircraft are tested. Give the booster a shakedown flight, work out the issues, then into the general fleet rotation. Would certainly be an interesting flip in space flight philosophy if suddenly the older equipment is considered more trustworthy. Well wasn’t th...

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by CRJockey
Mon Jan 25, 2021 8:48 pm
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments - 2021
Replies: 464
Views: 63093

Re: SpaceX - Tests, Launches, Developments - 2021

SpaceX used the term "Tested booster" almost as a joke early on, but customers are starting to notice that used rockets seem to be having fewer issues than brand new ones. ROFL , this is funny! Well, it's true. There are failure modes that can occur only once, and thus a reflown rocket is...

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by CRJockey
Mon Jan 25, 2021 5:36 pm
Forum: Technical/Operations
Topic: PHL runway 8
Replies: 25
Views: 3460

Re: PHL runway 8

Often if the performance data was available. Captain only takeoff though.... Why CPT only? What could a CPT do a FO couldn’t despite lifting it off at Vr or stopping with calculated balanced field prior V1? I get the CPT only for landings, but take offs? It may have to do with transfer of controls ...

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by CRJockey
Mon Jan 25, 2021 12:37 pm
Forum: Technical/Operations
Topic: PHL runway 8
Replies: 25
Views: 3460

Re: PHL runway 8

I have landed on 26 many times, I don't recall ever taking off on 8, though I may have forgotten. Do commercial aircraft ever take off on 8? Often if the performance data was available. Captain only takeoff though.... Why CPT only? What could a CPT do a FO couldn’t despite lifting it off at Vr or s...

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by CRJockey
Mon Jan 25, 2021 12:19 pm
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments - 2021
Replies: 464
Views: 63093

Re: SpaceX - Tests, Launches, Developments - 2021

Can't help but wonder how metaphorically close to the sun spacex is flying. Sooner or later one of those high use boosters will fail. Sush now, there are fans of the “test, explode, fix, test again” design philosophy that don’t want to hear that. On the other hand, payloads flying on high cycle boo...

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by CRJockey
Fri Jan 22, 2021 9:01 am
Forum: Technical/Operations
Topic: QF Project Sunrise A35K performance
Replies: 17
Views: 3187

Re: QF Project Sunrise A35K performance

Fuel on landing for spec mission is 5t Always interesting to read your contribution, Fred. Thanks for providing the numbers. I just wonder how 5t of fuel on landing suffice? Not sure about the fuel burn, but I guess in the region of 8t/hour during low level final reserve? That alone would bring you...

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by CRJockey
Thu Jan 21, 2021 7:40 pm
Forum: Technical/Operations
Topic: QF Project Sunrise A35K performance
Replies: 17
Views: 3187

Re: QF Project Sunrise A35K performance

Fuel on landing for spec mission is 5t Always interesting to read your contribution, Fred. Thanks for providing the numbers. I just wonder how 5t of fuel on landing suffice? Not sure about the fuel burn, but I guess in the region of 8t/hour during low level final reserve? That alone would bring you...

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by CRJockey
Sun Jan 17, 2021 8:45 am
Forum: Technical/Operations
Topic: “Line up and wait”
Replies: 38
Views: 4240

Re: “Line up and wait”

In the US, you'll get a LUAW once the landing aircraft has crossed the threshold or the point at which you're holding, but not necessarily after it touching down. That’s reasonable, but the FAA procedure of issuing the landing clearance to two planes both on final sounds fishy to me, too, as it doe...

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by CRJockey
Sat Jan 16, 2021 7:57 pm
Forum: Technical/Operations
Topic: “Line up and wait”
Replies: 38
Views: 4240

Re: “Line up and wait”

Just one example, hard to identify the traffic the tower referring to. Like MaxQ, we’re accustomed to the clearance to enter the runway AFTER the landing traffic touches down. I don’t see where it speeds things up. Well, opinions differ and thats plenty alright. I never had difficulties identifying...

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by CRJockey
Sat Jan 16, 2021 5:00 pm
Forum: Technical/Operations
Topic: “Line up and wait”
Replies: 38
Views: 4240

Re: “Line up and wait”

In the UK it’s quite common to get a clearance from the tower when you’re number one for the runway ‘behind the landing aircraft line up and wait’ I’ve only been given this clearance when the landing aircraft is on short final but it’s not one you’ll receive in the US Fairly common across Europe. O...

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by CRJockey
Fri Jan 15, 2021 5:42 am
Forum: Technical/Operations
Topic: A350-1000 fuel burn
Replies: 179
Views: 38658

Re: A350-1000 fuel burn

Typically the larger airplanes have a lower CASM (cost per available seat mile).Basically, the cost per seat decreases as the capacity increases. What’s very unique to the A359/A35K case is that the unit seat costs are effectively the same despite the A35K being larger and more expensive. In the ca...

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by CRJockey
Thu Jan 14, 2021 9:43 pm
Forum: Technical/Operations
Topic: A350-1000 fuel burn
Replies: 179
Views: 38658

Re: A350-1000 fuel burn

The A35K's strongest competitor is the A359 (especially later builds). What would the trip fuel had been for the A359 for the above trip photo-documented? Per several analysis, there is very little, if any, per-seat fuel burn advantage of the K over the 9. Without a unit cost advantage, the primary...

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by CRJockey
Wed Jan 13, 2021 2:23 pm
Forum: Site Related
Topic: Mandatory Items in Thread Titel
Replies: 2
Views: 3495

Re: Mandatory Items in Thread Titel

Dear all, I suggest adding a mandatory item (via the forum rules) to a thread titel. In CivAv especially it would help tremendously if people were to be obliged to input the country or regulatory authority (FAA, EASA, CAAC, etc...) in the thread title. The current thread about "majors" pa...

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by CRJockey
Wed Jan 13, 2021 9:07 am
Forum: Military Aviation & Space Flight
Topic: SpaceX - Tests, Launches, Developments - 2021
Replies: 464
Views: 63093

Re: SpaceX - Tests, Launches, Developments - 2021

A couple of F9 flights are coming up. The first one is a Starlink mission tentatively on the 17th, then the Transporter-1 mission slated for the 21st. Interestingly, Booster B1051 has been assigned to give the Transporter-1 mission a lift. This will be flight #8 for B1051, breaking B1049's and its ...

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by CRJockey
Mon Jan 11, 2021 10:07 pm
Forum: Site Related
Topic: Mandatory Items in Thread Titel
Replies: 2
Views: 3495

Mandatory Items in Thread Titel

Dear all, I suggest adding a mandatory item (via the forum rules) to a thread titel. In CivAv especially it would help tremendously if people were to be obliged to input the country or regulatory authority (FAA, EASA, CAAC, etc...) in the thread title. The current thread about "majors" par...

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by CRJockey
Mon Jan 11, 2021 3:19 pm
Forum: Civil Aviation
Topic: A321 P2F News and Discussion Thread
Replies: 284
Views: 72789

Re: A321 P2F News and Discussion Thread

I see this narrative pop up on occaision, and it certainly has some validity if not using FAR121 (or equivalent) reasoning. But as I am fairly Airbus ignorant, I am curious about the reality of it. Anyone have actual examples on this? Would A32X to A33X (or visa versa) be a differences course or re...

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by CRJockey
Sat Jan 09, 2021 10:55 pm
Forum: Military Aviation & Space Flight
Topic: How do you move an AFV in 2021?
Replies: 40
Views: 2421

Re: How do you move an AFV in 2021?

I saw the 150M number (probably €) in the context of the possible Indonesian purchase that hasn't materialized yet. For the original customers, the contract includes a compensation clause for inflation, so it's hard to give absolute values even for them. The same aircraft that cost 175M some years ...

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by CRJockey
Sat Jan 09, 2021 10:52 pm
Forum: Military Aviation & Space Flight
Topic: How do you move an AFV in 2021?
Replies: 40
Views: 2421

Re: How do you move an AFV in 2021?

I think you're right the pricing for a new customer is difficult. Germany says they cost 175M Euros each, so I didn't pull a number from the air. See Wikipedia. https://en.wikipedia.org/wiki/Airbus_A400M_Atlas What export customer paid $150M? I'm curious. (Also, the difference is only 25% or 33%.) ...

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by CRJockey
Sat Jan 09, 2021 7:52 pm
Forum: Civil Aviation
Topic: A321 P2F News and Discussion Thread
Replies: 284
Views: 72789

Re: A321 P2F News and Discussion Thread

Its not hard to forsee a continuous slow conversion of these types to freighter service in the years ahead. The feedtock is huge, and no better narrowbody options exist. Hopefully, Airbus can gain a better foothold in the freighter market, which for some reason has eluded them till now. They can of...

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by CRJockey
Sat Jan 09, 2021 2:20 pm
Forum: Civil Aviation
Topic: Sriwijaya Air 737-500 (SJ182 CGK-PNK) crashes shortly after takeoff
Replies: 867
Views: 259313

Re: Sriwijaya Air 737-500 (SJ182 CGK-PNK) crashes shortly after takeoff

"A stall" can happen but at 10k feet of altitude there is more than enough room to bring the plane back into stabilized flight. Fully agree, but stall recovery is not really about the altitude available as soon as you passed something like 1000ft AGL. Immediate and proper stall recovery p...

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by CRJockey
Fri Jan 08, 2021 9:57 pm
Forum: Military Aviation & Space Flight
Topic: What would a modern heavy bomber look like?
Replies: 78
Views: 7015

Re: What would a modern heavy bomber look like?

Well, totally agree with you in general. But yeah, crazy that man is. Plenty of evidence. After looking up his background a bit more, I'd agree with you that he probably is now, but back then I'm not sure. Youthful naïveté? Absolutely. Stupid? A case could be made. Crazy? I'm not so sure. But in th...

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by CRJockey
Fri Jan 08, 2021 6:08 pm
Forum: Military Aviation & Space Flight
Topic: What would a modern heavy bomber look like?
Replies: 78
Views: 7015

Re: What would a modern heavy bomber look like?

Yep, it proved that Soviet generals didn't want to kill a crazy yet innocent man. Unlike those on the USS Vincennes who got medals for shooting down a civilian airliner. Well, the Russians did it twice before to commercial airliners, the Iranians recently shot a commercial airliner departing their ...

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by CRJockey
Fri Jan 08, 2021 4:40 pm
Forum: Military Aviation & Space Flight
Topic: How do you move an AFV in 2021?
Replies: 40
Views: 2421

Re: How do you move an AFV in 2021?

I forgot ... An A400 can carry and AVF. They cost about $200M each. So, you start with the thesis of a distinct lack of airframes to move AFVs and you forgot to mention the one that can (and immediately discredits it by implying a price), discards the other that can because no can buy it new? Pecul...

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by CRJockey
Fri Jan 08, 2021 10:31 am
Forum: Military Aviation & Space Flight
Topic: F-35 News and Discussion Thread - 2021
Replies: 78
Views: 14834

Re: F-35 News and Discussion Thread - 2021

Ozair wrote:
...


Thanks Ozair, your explanations are much appreciated.

And for what it is worth: I really like the lines of the ship. Elegant.

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by CRJockey
Fri Jan 08, 2021 9:13 am
Forum: Military Aviation & Space Flight
Topic: F-35 News and Discussion Thread - 2021
Replies: 78
Views: 14834

Re: F-35 News and Discussion Thread - 2021

South Korea have released a new conceptual design for their future light carrier. Interesting to see they have gone for a two island design as well as not having a ski jump. Not sur if that means the ship will have a primary amphib role and therefore losing the parkings spots with a ski jump was im...

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by CRJockey
Thu Jan 07, 2021 1:24 pm
Forum: Technical/Operations
Topic: VFR with Airliners
Replies: 62
Views: 5182

Re: VFR with Airliners

Don't sell yourself short. VFR may seem "basic", but in some ways, it is more challenging than some IFR operations. Fully agree. The largest surprise going IFR is, how navigation becomes incredibly easy in a normal flight, vs. the constant position checking and double checking flying VFR,...

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by CRJockey
Thu Jan 07, 2021 10:06 am
Forum: Technical/Operations
Topic: VFR with Airliners
Replies: 62
Views: 5182

Re: VFR with Airliners

I am a PPL student, and all I will ever fly as a hobby is VFR. I saw some documentation that Lufthansa was landing at uncontrolled airports in the netherlands to park some 747. The flight itself was seemingly IFR, but the final stages were VFR. I would like to know from the "experts": 1. ...

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by CRJockey
Mon Jan 04, 2021 4:42 pm
Forum: Military Aviation & Space Flight
Topic: Vietnam Air Force in the future: Su-22 replacement, P-3 Orion, AEW&C and some more C-295?
Replies: 91
Views: 5338

Re: Vietnam Air Force in the future: Su-22 replacement, P-3 Orion, AEW&C and some more C-295?

Well if these countries do not represent a viable threat, why does Vietnam need all these shiny toys. Regarding the DA42, whilst it is less capable than a P3C, you could buy more of them. Because there are other nearby countries that are? Your argumentation is not coherent. In post #87 you argue, t...

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by CRJockey
Mon Jan 04, 2021 4:32 pm
Forum: Military Aviation & Space Flight
Topic: Vietnam Air Force in the future: Su-22 replacement, P-3 Orion, AEW&C and some more C-295?
Replies: 91
Views: 5338

Re: Vietnam Air Force in the future: Su-22 replacement, P-3 Orion, AEW&C and some more C-295?

Not a good comparison at all. Vietnam has 96M people while Cambodia has 15M and Laos only 6M. For GDP, Vietnam is also a lot bigger, both total and per capita. Exactly, that's why neither of them is a threat to Vietnam. I'm trying to point out the vast difference in power and wealth. Why only consi...

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by CRJockey
Wed Dec 30, 2020 8:34 am
Forum: Technical/Operations
Topic: 737 variants vs. A320 variants and smooth landings
Replies: 50
Views: 6350

Re: 737 variants vs. A320 variants and smooth landings

Smooth landings is all about energy management when it domes to the level off, flare to touchdown. I’ve experienced rough landings in every airplane as well as pilots laying butter on the runway. This is really what I feel as well. And I have made rough landings where it felt as a greaser right bef...

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