Search found 19338 matches

by Starlionblue
Mon Sep 16, 2019 11:01 pm
Forum: Technical/Operations
Topic: American Airlines and their mechanical checklists
Replies: 24
Views: 1751

Re: American Airlines and their mechanical checklists

I haven’t seen them in AAs Airbus aircraft, probably because AA didn’t acquire Airbus until recently and basically using US Airways Airbus operating procedures for their Airbus procedures and Airbus have their ECAM memo checklists. Maybe semantics, but the ECAM memo is not really a checklist. It is...

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by Starlionblue
Sun Sep 15, 2019 11:52 am
Forum: Technical/Operations
Topic: 4K IFE arrives mid-2020 (NH and LH)
Replies: 7
Views: 547

Re: 4K IFE arrives mid-2020 (NH and LH)

afterburner wrote:
Does 4K have noticeable difference to 1080p on a 13.3' screen?


That's a hard one.

IMHO it is noticeable if you make an effort, but it doesn't enhance the experience.

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by Starlionblue
Sat Sep 14, 2019 12:27 am
Forum: Technical/Operations
Topic: Weighting passenger
Replies: 57
Views: 3900

Re: Weighting passenger

The easiest fix that doesn't seem too hard to implement (in new designs anyway) is to have the airplanes weigh themselves right before takeoff. There has got to be a way to put sensors in gear struts and get a pretty accurate weight of the aircraft. . It isn't that simple. The slightest wind will m...

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by Starlionblue
Thu Sep 12, 2019 11:17 pm
Forum: Technical/Operations
Topic: Question re. Antonov An-148
Replies: 4
Views: 783

Re: Question re. Antonov An-148

There is a switch NAV1/NAV2/GPS, which suggests that there must be a way to set LNAV and switch it to ILS at arrival, but there is no NAV button per se, at least in the JarDesign incarnation of the aircraft - which does seem to be the same as the few pictures of the cockpit I have found, though as ...

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by Starlionblue
Thu Sep 12, 2019 11:12 pm
Forum: Technical/Operations
Topic: What is VFR?
Replies: 40
Views: 4421

Re: VFR

VFR means the pilot is responsible to look outside and separate his aircraft from other traffic and the terrain. When flying IFR he needs a different license and a specific equipment on board he is assisted by permanent air traffic control surveillance. (but finally he is still responsible). VFR ca...

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by Starlionblue
Thu Sep 12, 2019 12:16 am
Forum: Technical/Operations
Topic: Weighting passenger
Replies: 57
Views: 3900

Re: Weighting passenger

Cargo? It's charged by the oz. Or the g or whatever measure you want to specify. Why not people? If you don't want to weigh everyone then just put a weight surcharge on overweight passengers. Airlines don’t want to charge people by the kg. If they did, they would have to give a whole seat to a 4 ye...

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by Starlionblue
Wed Sep 11, 2019 11:59 pm
Forum: Technical/Operations
Topic: Question re. Antonov An-148
Replies: 4
Views: 783

Re: Question re. Antonov An-148

As far as I can tell there's a button labeled "NAV" at the far left.

A nice high res pic of the panel would help. ;)

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by Starlionblue
Wed Sep 11, 2019 11:54 pm
Forum: Technical/Operations
Topic: American Airlines and their mechanical checklists
Replies: 24
Views: 1751

Re: American Airlines and their mechanical checklists

Seems a bit of overkill to me... Can't remember the specific one, or it might be more then one, but there were some accidents where a contributing factor was that the flight crew was running a checklist, got interrupted, then inadvertently skipped a step. This was a more effective way of checking t...

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by Starlionblue
Tue Sep 10, 2019 11:18 pm
Forum: Technical/Operations
Topic: Crashworthiness of modern airliners vs old
Replies: 30
Views: 3002

Re: Crashworthiness of modern airliners vs old

A320s ( and 321s ) have proved extremely resilient in two very high profile incidents, US Airways miracle on the Hudson and the recent Ural Airways birdstrike landing. Both frames stayed intact. The 738's seem to have a lot of incidents of fuselage breaks just after the wings in numerous landing in...

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by Starlionblue
Tue Sep 10, 2019 12:20 pm
Forum: Technical/Operations
Topic: American Airlines and their mechanical checklists
Replies: 24
Views: 1751

Re: American Airlines and their mechanical checklists

Seems a bit of overkill to me... Can't remember the specific one, or it might be more then one, but there were some accidents where a contributing factor was that the flight crew was running a checklist, got interrupted, then inadvertently skipped a step. This was a more effective way of checking t...

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by Starlionblue
Mon Sep 09, 2019 11:30 pm
Forum: Technical/Operations
Topic: American Airlines and their mechanical checklists
Replies: 24
Views: 1751

Re: American Airlines and their mechanical checklists

BravoOne wrote:
The bad thing about this kind of checklist is that you can't put them in the windows to block out the sunlight:):)


We're rapidly moving to paperless with electronic checklists and EFB. No paper at all! But we can always get a newspaper. :)

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by Starlionblue
Mon Sep 09, 2019 11:28 pm
Forum: Technical/Operations
Topic: Boeing 777 camera locations
Replies: 4
Views: 983

Re: Boeing 777 camera locations

Cameras are on the belly and the fin normally. Terrible pic but here's the 777 "forward" cam. The 777 down camera probably just looks like a little porthole in the bottom of the fuselage. https://cdn.airplane-pictures.net/images/uploaded-images/2013/9/24/322750.jpg That's the nose gear ca...

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by Starlionblue
Mon Sep 09, 2019 11:28 pm
Forum: Technical/Operations
Topic: Telescoping Control Columns
Replies: 68
Views: 3460

Re: Telescoping Control Columns

some actions cannot be directly mapped. maybe i extended it too far. but it is still valid for the PF monitoring. but probably valid for some actions, that can me directly mapped from the flying computer to pilot controls (throttle levers movement etc) You'd get it for cars ( at the moment ) for th...

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by Starlionblue
Mon Sep 09, 2019 7:32 am
Forum: Technical/Operations
Topic: American Airlines and their mechanical checklists
Replies: 24
Views: 1751

Re: American Airlines and their mechanical checklists

I'd never heard of this. Very cool.

Image

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by Starlionblue
Mon Sep 09, 2019 2:23 am
Forum: Technical/Operations
Topic: Boeing 777 camera locations
Replies: 4
Views: 983

Re: Boeing 777 camera locations

Cameras are on the belly and the fin normally. Terrible pic but here's the 777 "forward" cam. The 777 down camera probably just looks like a little porthole in the bottom of the fuselage. https://cdn.airplane-pictures.net/images/uploaded-images/2013/9/24/322750.jpg Here's the fin cam on th...

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by Starlionblue
Sat Sep 07, 2019 11:56 am
Forum: Technical/Operations
Topic: Weighting passenger
Replies: 57
Views: 3900

Re: Weighting passenger

One of the deadliest crashes in Sweden, albeit with ”only” 18 dead, was certainly due to CoG being too far aft. The report in swedish only (nowadays they have a summary in english, but in 1990 there was none): https://www.havkom.se/assets/reports/RL-C-1990_12-SE-IZO.pdf https://aviation-safety.net/...

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by Starlionblue
Sat Sep 07, 2019 9:01 am
Forum: Technical/Operations
Topic: Weighting passenger
Replies: 57
Views: 3900

Re: Weighting passenger

Passengers should be weighed. The accuracy of the CG calculation (and thus the safety of the fight) is more important than anyone feeling "fat shamed". Weighing all passengers takes an enormous amount of time (and money) but will not improve safety. As far as I know, not a single flight h...

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by Starlionblue
Fri Sep 06, 2019 11:47 pm
Forum: Technical/Operations
Topic: Telescoping Control Columns
Replies: 68
Views: 3460

Re: Telescoping Control Columns

force feedback is not a correct name. i think that the most people talking about the need of the feedback are really talking about movement feedback (feel the movement from the second pilot). there is no need to feel the control force. read: https://safetyfirst.airbus.com/app/themes/mh_newsdesk/doc...

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by Starlionblue
Fri Sep 06, 2019 11:44 pm
Forum: Technical/Operations
Topic: Weighting passenger
Replies: 57
Views: 3900

Re: Weighting passenger

the first question is, of course, why not to weight plane by using landing gear movement. When boarding, the aircraft is outside, and moves around in the wind enough to affect any such sensing. This is why aircraft weighing must be carried out in a closed hangar. Weighing individual pax on anything...

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by Starlionblue
Fri Sep 06, 2019 12:43 am
Forum: Technical/Operations
Topic: Why Two Tails on most New Military Jets?
Replies: 5
Views: 2287

Re: Why Two Tails on most New Military Jets?

- Two smaller rudders make it easier to fit the aircraft into a cramped carrier hangar deck, especially if you can fold them.
- Additional control authority at high AoA.
- Redundancy if one is damaged in combat.

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by Starlionblue
Fri Sep 06, 2019 12:36 am
Forum: Technical/Operations
Topic: Questions About Crew Rest Areas
Replies: 14
Views: 6247

Re: Questions About Crew Rest Areas

AirKevin wrote:
ArchGuy1 wrote:
It would be nice if passengers in coach have the same type of beds as the crew in the crew rest areas.

So....crammed into the ceiling. Got it.


Still better than Business. It is quite and dark and no one is passing you in the aisle.

Now if only there was a lav in there...

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by Starlionblue
Fri Sep 06, 2019 12:22 am
Forum: Technical/Operations
Topic: Telescoping Control Columns
Replies: 68
Views: 3460

Re: Telescoping Control Columns

In an Airbus, speed is compensated for by the FBW system. A given stick deflection in pitch a given load factor, regardless of speed. A given stick deflection in roll gives a given roll rate, regardless of speed. So force feeedback doesn't really tell you anything. Is that the way it works in Alter...

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by Starlionblue
Thu Aug 29, 2019 11:17 pm
Forum: Technical/Operations
Topic: The reason the A350 has black cockpit window frames
Replies: 16
Views: 4843

Re: The reason the A350 has black cockpit window frames

What's up with the differences in the sensors on the nose? The Virgin 350 has three directly above the nose cone, the British Airways bird has none. Different options? https://simpleflying.com/wp-content/uploads/2019/08/Virgin-A350-Zadie-700x391.jpg https://simpleflying.com/wp-content/uploads/2019/...

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by Starlionblue
Thu Aug 29, 2019 11:14 pm
Forum: Technical/Operations
Topic: Telescoping Control Columns
Replies: 68
Views: 3460

Re: Telescoping Control Columns

The main advantage of a yoke is having leverage to exert more force if manual reversion is needed. Since all new designs are fully fly by wire, that is not needed, so I don't know what Boeing's argument will be (and I'm a Boeing fan usually). Boeing incorporates force feedback in their FBW aircraft...

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by Starlionblue
Thu Aug 29, 2019 2:28 pm
Forum: Technical/Operations
Topic: Telescoping Control Columns
Replies: 68
Views: 3460

Re: Telescoping Control Columns

Possibly, but I’ve never even heard it discussed by pilots or engineers. Seat adjustments suffice. GF Agreed. In a fighter jet, I can see where arm placement must be quite precise given you're making precise maneuvers under heavy G loads. In an airliner, seat and armrest adjustment is more than goo...

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by Starlionblue
Thu Aug 29, 2019 1:47 pm
Forum: Technical/Operations
Topic: Long Flight & Duty Narrow Body Flights
Replies: 10
Views: 1874

Re: Long Flight & Duty Narrow Body Flights

Jurisdictions differ. We can extend duty limits by operating 3 crew with rest in a fully reclining business class seat. However, the biz seat does not give as much "rest credit" as a bunk.

As Woodreau says the aircraft type is not relevant.

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by Starlionblue
Sun Aug 25, 2019 1:37 pm
Forum: Technical/Operations
Topic: B744 Global Supertanker - Any avionics modifications?
Replies: 4
Views: 1328

Re: B744 Global Supertanker - Any avionics modifications?

Ah. So on the flightdeck nothing actually changed then (aside from the firefighting systems)? I somewhat expected a switch to be added to supress any warnings while flying this low and re-enable them when they fly back to base. Pushbuttons to suppress terrain and configuration EGPWS warnings are st...

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by Starlionblue
Sat Aug 24, 2019 4:48 am
Forum: Technical/Operations
Topic: Azul Airlines - VCP to FLL - 3 captains
Replies: 20
Views: 2140

Re: Azul Airlines - VCP to FLL - 3 captains

Could be training, or the result of roster disruption. Easily happens if a couple of guys call sick, or an earlier flight on their roster was delayed and they couldn't make this one, or some flight was canceled. "The best laid plans" and all that. Ops needs two crew, and no FOs are availab...

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by Starlionblue
Sun Aug 11, 2019 2:48 am
Forum: Technical/Operations
Topic: Did/Does the 779X need a new wing? and does it need to be so big?
Replies: 47
Views: 7423

Re: Did/Does the 779X need a new wing? and does it need to be so big?

I once tried to pencil out the cost/benefit of thicker, lighter wings versus higher wing form drag. From those two parameters I couldn't see why every airplane wing isn't twice as thick - it takes a lot of wing form drag to get even -5% L/D delta; saving 50% of wing weight will more than balance th...

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by Starlionblue
Sun Aug 11, 2019 2:40 am
Forum: Technical/Operations
Topic: Boeing 747 Max Altitude Changes
Replies: 29
Views: 4162

Re: New queen v old queen max alt

Busyboy2 wrote:
Additionally, at least in the USA above FL410 at least one pilot has to stay on Oxygen the whole time above FL410. The 737 max is FL410 and most airliners rarely go above that.


Is that requirement not waived if quick donning masks are installed?

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by Starlionblue
Sat Aug 10, 2019 8:17 am
Forum: Technical/Operations
Topic: VTOL Jet Engine Aircraft and VTOL Jet Engine
Replies: 21
Views: 2250

Re: VTOL Jet Engine Aircraft and VTOL Jet Engine

When VTOL fighters are build to day a lot of compromises are needed to do. If these jet engines would really exists, VTOL fighters would be standard issue rather than special case. I just realised that, if VTOL fighters would be standard issue, aircraft carriers would be relics. True. However, give...

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by Starlionblue
Sat Aug 10, 2019 3:13 am
Forum: Technical/Operations
Topic: Hydraulic reservoir pressurization/ cavitation?
Replies: 22
Views: 2287

Re: Hydraulic reservoir pressurization/ cavitation?

Air pressure? Or hydraulic fluid pressure? Air pressure exerted on the fluid. Presumably, cavitation would cause hydraulic-fluid-bubbles, rather than air bubbles, correct? Air bubbles & foaming. Not sure what a hydraulic-fluid-bubble within the hydraulic fluid is. Cavitation is where a fluid bo...

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by Starlionblue
Sat Aug 10, 2019 2:07 am
Forum: Technical/Operations
Topic: A380 into Kai Tak?
Replies: 9
Views: 2088

Re: A380 into Kai Tak?

If the airport could handle B747 (but not so well), then likely the A380 could maneuver into the airport as well. It probably could, but very hard to as they also have to avoid buildings while landing. But just even more risky. I’m quite surprised that no aircraft has ever crashed into a building. ...

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by Starlionblue
Fri Aug 09, 2019 4:23 am
Forum: Technical/Operations
Topic: Hydraulic reservoir pressurization/ cavitation?
Replies: 22
Views: 2287

Re: Hydraulic reservoir pressurization/ cavitation?

Okay, so basically, just as high altitudes and low pressures are harmful for humans, the same can be said for pumps. At low pressures, cavitation will cause bubbles to form in the fluid at the pump inlet which can be harmful. So they put bleed air inside to pressurize so that cavitation won’t happe...

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by Starlionblue
Fri Aug 09, 2019 1:34 am
Forum: Technical/Operations
Topic: Hydraulic reservoir pressurization/ cavitation?
Replies: 22
Views: 2287

Re: Hydraulic reservoir pressurization/ cavitation?

AFAIK, head pressure is a measure of the pressure the system can deliver.

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by Starlionblue
Thu Aug 08, 2019 4:31 pm
Forum: Technical/Operations
Topic: Can single deck airplanes have gull wings of A380?
Replies: 29
Views: 2744

Re: Can single deck airplanes have gull wings of A380?

Where do you see a gap for a bigger engine on this 787 where they sag down to a man's knees ? Those numbers seem off . https://bloximages.newyork1.vip.townnews.com/tulsaworld.com/content/tncms/assets/v3/editorial/3/06/3060ac8c-f9b7-590b-9f25-401b38369d50/524ced01e98d6.image.jpg A350 seems somewhat ...

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by Starlionblue
Thu Aug 08, 2019 4:30 pm
Forum: Technical/Operations
Topic: Need help in selecting college for aviation management
Replies: 10
Views: 1681

Re: Need help in selecting college for aviation management

Don't paint yourself into a corner with an aviation degree. If you look at most airline CEO's, very few have had anything close to anything resembling an aviation specific degree. At the end of the day, any company will want someone who knows how to make money selling widgets. Sometimes those widge...

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by Starlionblue
Thu Aug 08, 2019 4:29 pm
Forum: Technical/Operations
Topic: VTOL Jet Engine Aircraft and VTOL Jet Engine
Replies: 21
Views: 2250

Re: VTOL Jet Engine Aircraft and VTOL Jet Engine

VTOL147 wrote:
With two engines it's not possible to keep the balance.


Can't you duct some exhaust to the corners to keep balance in vertical flight? This seems simpler than adding 6 engines.

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by Starlionblue
Thu Aug 08, 2019 4:27 pm
Forum: Technical/Operations
Topic: Hydraulic reservoir pressurization/ cavitation?
Replies: 22
Views: 2287

Re: Hydraulic reservoir pressurization/ cavitation?

Cavitation is the formation of bubbles in a liquid. Foam is a manifestation of cavitation. Air bubbles in hydraulic fluid are bad because air is compressible whilst fluid is not. Ensuring that hydraulic fluid stays pressurised mitigates cavitation. If you allow a fluid to expand into a space rapidly...

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by Starlionblue
Thu Aug 08, 2019 2:55 pm
Forum: Technical/Operations
Topic: VTOL Jet Engine Aircraft and VTOL Jet Engine
Replies: 21
Views: 2250

Re: VTOL Jet Engine Aircraft and VTOL Jet Engine

8 engines are for safety. One engine in every corner could be broken and takeoff or landing would still work. The air intake would be in the aircraft like with fighters. By the way can you see the pictures? If not here are the links: http://www.cyanspace.com/images/vtolengine2.jpg http://www.cyansp...

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by Starlionblue
Thu Aug 08, 2019 2:53 pm
Forum: Technical/Operations
Topic: Can single deck airplanes have gull wings of A380?
Replies: 29
Views: 2744

Re: Can single deck airplanes have gull wings of A380?

The A350 engine ground clearance is significantly greater on average, 76-93cm compared to 61-79cm for the 787. 15cm doesn't sound like a lot but it is almost 25%. . by airbus A350 engine naselle crealance 0.76m heavy, 0.88m light 787 is very different by variant. 787-900 naselle really low, but 787...

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by Starlionblue
Thu Aug 08, 2019 8:23 am
Forum: Technical/Operations
Topic: Big engines planes (2030+) - how will look like?
Replies: 23
Views: 6872

Re: Big engines planes (2030+) - how will look like?

https://www.safran-group.com/media/safran-celebrates-successful-start-open-rotor-demonstrator-tests-new-open-air-test-rig-southern-france-20171003 Interesting is anywhere more info about this design There was this thread, starting in 2017: https://www.airliners.net/forum/viewtopic.php?f=5&t=137...

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by Starlionblue
Wed Aug 07, 2019 11:41 am
Forum: Technical/Operations
Topic: Single point of failure and incident classifications
Replies: 3
Views: 1624

Re: Single point of failure and incident classifications

There are several documents. It's not like you need to specifically address it as a single point of failure. As long as you know the failure is catastrophic, the most stringent failure (im)probability needs to be complied with. Here's one: https://www.faa.gov/documentLibrary/media/Advisory_Circular/...

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by Starlionblue
Wed Aug 07, 2019 7:23 am
Forum: Technical/Operations
Topic: Can single deck airplanes have gull wings of A380?
Replies: 29
Views: 2744

Re: Can single deck airplanes have gull wings of A380?

all modern liners except A380 have about the same engine clearance, so A350 or 787, but they will face MAX issue in future. The A350 engine ground clearance is significantly greater on average, 76-93cm compared to 61-79cm for the 787. 15cm doesn't sound like a lot but it is almost 25%. Also the eng...

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by Starlionblue
Tue Aug 06, 2019 1:13 pm
Forum: Technical/Operations
Topic: Can single deck airplanes have gull wings of A380?
Replies: 29
Views: 2744

Re: Can single deck airplanes have gull wings of A380?

Gull wings on A380 are on another level and that may be needed for future engines. Lots of people are saying that twin engines are the future but then there is no space below the wings as in 737 max. because of the short landing gear and wing design but I wonder if gull wings are possible on single...

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by Starlionblue
Mon Aug 05, 2019 8:10 pm
Forum: Technical/Operations
Topic: Can single deck airplanes have gull wings of A380?
Replies: 29
Views: 2744

Re: Can single deck airplanes have gull wings of A380?

Gull wings on A380 are on another level and that may be needed for future engines. Lots of people are saying that twin engines are the future but then there is no space below the wings as in 737 max. because of the short landing gear and wing design but I wonder if gull wings are possible on single...

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by Starlionblue
Mon Aug 05, 2019 2:32 pm
Forum: Technical/Operations
Topic: Can single deck airplanes have gull wings of A380?
Replies: 29
Views: 2744

Re: Can single deck airplanes have gull wings of A380?

It is always a compromise. Bigger engines mean placing that part of the wing higher, but you don't want to add too much weight by making your landing gear very tall. Given the long landing gear issue, gull wings are one design solution, and they have been used for this purpose for more than half a c...

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by Starlionblue
Sun Aug 04, 2019 12:04 am
Forum: Technical/Operations
Topic: Weather Prediction for the 21st Century
Replies: 3
Views: 930

Re: Weather Prediction for the 21st Century

Airport forecasting tends to be very accurate a couple of hours out. As DFW17L says though, the further out the forecast, though, the lower the accuracy. Weather is complicated. Do we care about the weather more than a few hours out? Of course. But it doesn't need to be super-accurate until we get c...

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by Starlionblue
Sat Aug 03, 2019 1:50 pm
Forum: Technical/Operations
Topic: Airbus Radome
Replies: 8
Views: 1758

Re: Airbus Radome

The radome is composite. The aircraft in this case is aluminium. Thus different surfaces.

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