Re: Could a quad use different combinations of engines?

Galaxyflyer, at least i got some sense from you. My questions are not necessarily about what has gone before or even the state of the art now, its a concept for the future. Arkjugag, do you believe i have not pointed out at least one difficulty your future drag reducing concept technology might fac...

Re: Could a quad use different combinations of engines?

The advantage is obvious, reduce drag. I am sure that is the very reason the jet engines are retractable on gliders. Not such an amazing leap of imagination to see that concept being applied on larger aircraft IN THE FUTURE! Could even be centre-line thrust, not wing based. I am interested to know ...

Re: Could a quad use different combinations of engines?

And yet you are still here... Says a lot. Making predictions is difficult, especially about the future. Thats why its a thought exercise. I wonder what happened to you to make you behave like this? Ok just offer me one small glimpse into the future of air travel with something that can be discussed...

Re: Could a quad use different combinations of engines?

Fine, jog on! I am thinking, in this thought exercise, about a clean sheet design concept, where optimal cruise engines are supplemented by retractable thrust to be deployed when needed i.e at takeoff. I dont see that as such an outlandish concept for the future despite what that silly sausage Pika...

Re: Could a quad use different combinations of engines?

I have no need to prove anything, the purpose of the thread is quite clear. You seem to be an 'angry' chap who is quite vulnerable. Anyway, back to my chosen topic. In the future i am certain that 'deployed as needed' engines will be in use. Since you have no professional credentials and offer noth...

Re: Could a quad use different combinations of engines?

Pikachu, you continue to embarrass yourself. Why the frustration? Things not going well.? Retractable engines will happen in commercial flight, youll see. Well I guess you told me... Hey can you provide your aerospace engineering background to support your claim? Have you noticed how many quads are...

Re: Could a quad use different combinations of engines?

:roll: Pikachu Im sure such comments are your way of making yourself feel superior (perhaps making up for shortcomings elsewhere) but its unnecessary. And, as it turns out, after a bit of research, the 'thought' has been deemed good enough to make it into production on several aircraft. You're usin...

Re: Could a quad use different combinations of engines?

The point would be to design an aircraft for, say, 500 passengers in 3 comfortable classes, but with much better economics than an A380. The small engines will essentially be used for providing the additional thrust when required, such as at takeoff, but provide much less drag and fuel consumption ...

Re: Aircraft Brakes

"I get I'm being insulted, but I don't get why. Also, it's not helpful. No one believes I'm an expert in anything. I don't either. But I understood that the main cause of wear in carbon brakes is number_of_applications, not total_energy_of_stopping. I believe this because the IATA says so (and...

Re: Aircraft Brakes

"I get I'm being insulted, but I don't get why. Also, it's not helpful. No one believes I'm an expert in anything. I don't either. But I understood that the main cause of wear in carbon brakes is number_of_applications, not total_energy_of_stopping. I believe this because the IATA says so (and ...

Re: CANADA JETLINES getting ready to fly

Blueknows wrote:

https://www.pilotcareercentre.com/Air-Carrier-PCC-Profile/3846/Jetlines

Pilots are being hired and aircraft arrived from NZ. Looks like this might happen. Anyone got any pictures of planes ??

Re: IFE USB port vulnerability

You're sure hypothetically that the system would only shut down a few screens? I'm glad you put so much effort into your detailed analysis of the hypothetical event. If the system allowed some lesbian porn pop up ads from time to time that might make a twelve hour flight a bit more enjoyable. Am I r...

Re: 767 Fuel Burn Question

Please let everybody know if you decided to purchase a 787 or a 767 for your personal use.

Re: Auto Stall Prevention System on 737 Max

Kind of a lame article. Why could the MCAS system have not been a Master caution and an EICAS message instead of the MCAS system mysteriously auto trimming the plane? Since a pilot was already manually flying the aircraft such a warning and message would have got their immediate attention. It certa...

Re: Auto Stall Prevention System on 737 Max

I am a private pilot and Aircraft Mechanic. I have worked on several different commercial airline aircraft. Including 737-700 and -800. I don't understand why Boeing thought the 737 Max needed an automatic stall prevention system. Pilots flying this aircraft surely know how to recognize and recover...

Re: Fear of flying, working on getting better but still scared about maintenance

I've been flying for nearly four decades, much of it professionally. I've certainly experienced severe and extreme turbulence, but invariably it's been doing something other than passenger flying. Most of it has been flying close to mountains during firefighting operations, something that you won't...

Re: B787 Go around

Nicoeddf wrote:

Thanks for the info...it somehow stuck in my mind. Well, then the plane I fly does disconnect automatically

Re: Why isn't the 744, 748, and A380 not used on ULH flights?

I think fleet allocation has more to do with yields, at least it did when I worked for an airline. A full A380 has wonderful yields (assuming normal fares), whether ULH or not. Do you think accountants ever considered the extra passengers and extra freight to offset the extra engines costs you poin...

Re: Plane flying low. reasons?

Somebody is a little sensitive...

Re: Plane flying low. reasons?

Dear Sir,

Did you just imply that I was not a professional?

If I can fly my flight sim DC9 at 495 000 pounds why can't everybody? Fly it at 9 000' and your passengers will be happy they arrive at destination and hug their loved ones.

Re: Ground Op 737 Nose Wheel Well

Sometimes dogs that get out of their kennels in the cargo hold can get into the nose wheel well on the 737.
Normal procedure for ground ops with the 737.

Re: Plane flying low. reasons?

Very easy to overlook in my flight sim experience. When I take off in my 747 at 1.3 million pounds I find the performance rather sluggish.

Re: Single Pilot Passenger Jet Operations

I fly the Citation I on my flight sim. It's a nice 1960's straight wing jet. Not too demanding.

Re: Plane flying low. reasons?

Probably didn't realize they were over gross weight when they took off. Only realized it when they couldn't climb any higher.
Happens all the time.

Re: What changes were made after AA965's crash into a mountain?

I think there was a service bulletin to change the logic so spoilers automatically retract if TOGA is selected Can you provide a link to the SB you referenced? You know, the one "you think" there was? Also please advise of your total time flying the 757 as it would make your credibility t...

Re: What changes were made after AA965's crash into a mountain?

Didn´t they also had the spoilers up and didn´t retract them while applying full thrust, thus resulting in worse than normal climb performance? As an aftermath, spoilers now automatically retract when giving max power. The speed brakes were on and it was configured for landing. Full thrust was appl...

Re: What changes were made after AA965's crash into a mountain?

As an aftermath, spoilers now automatically retract when giving max power. Not on all airliners; however, it became required procedure to verify speedbrakes are stowed for go-arounds, and TCAS and wind shear escape maneuvers. I think there was a service bulletin to change the logic so spoilers auto...

Re: What changes were made after AA965's crash into a mountain?

Didn´t they also had the spoilers up and didn´t retract them while applying full thrust, thus resulting in worse than normal climb performance? As an aftermath, spoilers now automatically retract when giving max power. Your information is 100% incorrect. How much time do you have flying the 757 to ...

Re: why the external release is only on the f/o's side of the aircraft

I'm not sure if this is the answer, but to facilitate a quick turnaround the aircraft maintenance logs were (maybe still are somewhere?) transferred from flight to ground crew via a long pole to the FO's window. With the jetbridge on the captains side this task would be hard to do from that side - ...

Re: Ditching a high wing aircraft-would it roll inverted?

Sully showed that ditching a low wing airliner is possible safely. However if my day went wrong and the ATR or Dash 8 I was on was forced to ditch, would it float on the wings with the cabin submerged and me drowned or roll inverted with the weight of the engines? Each dry engine is less than 1000 ...

Re: Does 737-700 require thrust reverser to be operational

JAGflyer wrote:

With one T/R inoperative you're performance is as good as if both were inoperative since you obviously would not be activating only the remaining serviceable T/R.

Re: Does 737-700 require thrust reverser to be operational

The Master MEL specifies one reverser required for dispatch on the -700.

Performance penalties can be quite restrictive.

Re: 767 Fuel dump with Dual AC Bus Failure

There is no checklist for loss of both AC busses in the QRH.

Re: Sunlight *through* fuselage on inflight B767

check your pm and send me the pics. I will post. thx.

Re: What happens when a pax sitting in an overwing exit seat opens the emer. exit window while taxiing?

Better determine what model is being discussed. The -100 might have a different arrangement than the Max.

Re: What happens when a pax sitting in an overwing exit seat opens the emer. exit window while taxiing?

Better determine what model is being discussed. The -100 might have a different arrangement than the Max.

Re: 787 type rating

What would you recommend a A320/B737/ Atr?

Re: 787 type rating

Get a 747-400 rating. With 215 hours you'll be hired immediately. hahahaha. Thank you...that was way too sarcastic and I here other guys are giving good suggestions and don't you think this was unnecessary.Any ways it was a bad joke ..better luck next time I had the pleasure of recently operating w...

Re: 787 type rating

Get a 747-400 rating. With 215 hours you'll be hired immediately. hahahaha.

Re: 737, 757, and 767 Winglet Heights

B737 is 8' 2".
B767 is 11'.

Re: Rotation Speeds....

As Woodreau said... it depends. What does it depend on? Take off weight, flap setting, pressure altitude, and ambient air temperature. Here are the speeds from the QRH for a B757-200. Flaps 1: V1 176 Vr 179 V2 184 Flaps 5: V1 161 Vr 165 V2 169 Flaps 15: V1 154 Vr 157 V2 160 Flaps 20: V1 145 Vr 148 ...

Re: Rotation Speeds....

FCOM.

Matt6461 wrote:

pikachu wrote:

B777-200LR @ 360 000 KG, full thrust.

Flap 15 - 167/174/178

B777-300ER @ 840 000 POUNDS, full thrust.

Flaps 15 - 175/185/190

What's your source? You're putting 65k lbs over MTOW on the 77W.

Re: Rotation Speeds....

B777-200LR @ 360 000 KG, full thrust.

Flap 15 - 167/174/178

B777-300ER @ 840 000 POUNDS, full thrust.

Flaps 15 - 175/185/190

Re: Rotation Speeds....

B767-200 @ 350 000 pounds. Full thrust. (PS the 757 above is 260 000 pounds)

Flaps 1 - 160/164/167
Flaps 5 - 155/158/161
Flaps 15 - 147/150/153
Flaps 20 - 142/144/147

Re: Rotation Speeds....

As Woodreau said... it depends. What does it depend on? Take off weight, flap setting, pressure altitude, and ambient air temperature. Here are the speeds from the QRH for a B757-200. Flaps 1: V1 176 Vr 179 V2 184 Flaps 5: V1 161 Vr 165 V2 169 Flaps 15: V1 154 Vr 157 V2 160 Flaps 20: V1 145 Vr 148 V...

Re: Flying for a foreign airliner?

Europe is tough... Proper passport and licence required.

Re: Flying with air conditioning packs off?

You can always tell a flight attendant. Just not very much...

Re: Turbulence?

Woodreau wrote:

Sounds like the plane flew into and through the thunderstorm instead of around one.

Re: Maneuvering Speed

No. Maneuvering speed is the speed at which you'll stall the aircraft before overstressing it given a full control input. As long as you don't make a full input in your example, you can safely turn the aircraft. One thing to be aware of is that maneuvering speed is dependent on wing load factor, an...

Re: Is there a minimum "rest" time for an aircraft?

Neither comes with further instructions, and the EGT limit doesn't mention if it should be respected before start or during start. Again, though, a max EGT starting limitation is unlikely to impact turnarounds... I mentioned above that if an engine that is not running has an EGT of over 700 degrees...