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777cap

PMDG 777/ Taxiing The Beast

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I am going to keep this short captains, but i just wanted to ask if anyone on the forums are interested to get a pdf on how to taxi the T7(pmdg),this will be the only pdf required for proper knowledge on the taxiing of the aircraft like a pro.if anyone is interested please do reply as i am in the process of making one for my friend.(i will post it here on the forumcs if i can get at least 25 members to give me a +1)

do let me know if you are interested on any other technical information on the aircraft, i will be pleased to help.

thank you,

H.Mahesh :P

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I would love to get a copy. I'll read anything T7 related I can get my hands on if there's someone willing to write it.

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My tip is to keep your speed under 10 knots when turning, and do incremental rudders.

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captains,

all right, then i shall create the document. that said i will also have to tell you it will take some time as i have a full time job,so i hope you can bear with me.Let me just describe what the document will cover:

1)Introduction

2)Principal dimensions(only the 777-200lr)

3)Turning radius/what it means and why it is important to have a good knowledge about it

4)Visual aids(i may incorporate this with the technique to taxi itself)

5)Weight-to-Thrust requirement(based on practical experiments in the sim)

^HOW TO TAXI^

6)Cockpit awareness 

7)Lets start taxiing(From gate-to-runway)

8)Executing Turns(90o,180o)

9)Maintaing speed without overworking the Engines

 

i guess that will be it,thats as much as i can remember over the top of my head.If there is anything else you wont to know or are interested in let me know.

Warm Regards

H.Mahesh

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Thank you for the offer to take the time creating this. Sounds like this will be very helpful

and very much appreciated from me.

 

Thank you in advance.

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It's all about practise and the right viewpoint :D 

 

+1 for the PDF 

 

Rgds, PC

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captains,

before i went further and tried to make the entire document i would like to give a small preview of the document.tell me what you think of it and let me know if there is anything else you would like to see(images,chapter[write these in bold please]),you will notice pictures and info. are from fcoms,boeings official texts and some other inputs.

thank you....

 

CONTENT:

 

1.   INTRODUCTION

2.   PRINCIPAL DIMENSIONS

3.   TURNING RADIUS

4.   VISIBILITY FROM THE FLIGHT DECK

5.   WEIGHT TO THRUST REQUIREMENT(FOR FLIGHT SIMULATOR X ONLY)

 

         HOW TO TAXI

6.   COCKPIT AWARNESS

7.   ENGINE START-UP AND READY TO TAXI.

8.   LETS START TAXIING

9.   EXECUTING TURNS

10.                   MAINTAING SPEED WITHOUT OVERWORKING THE ENGINES

 

 

 

2.PRINCIPAL DIMENSIONS(only the 777-200lr):

 

Fuselage width:

6.2 m

 

Fuselage height:

8.39 m

 

Fuselage length:

62.94 m

 

Cabin length:

48.36 m

 

Cabin width:

5.82 m

 

 

Distance from the nose to tail cone:206ft

Distance from the nose landing gear to the main landing gear:84ft and 11inches

Height from the ground to the tail tip:61ft and 1 inch

Wingspan: 212 and 7 inches

Width between the main landing  gears:36 feet(imp***)

Distance between nose to nose landing gear:approx.12 feet(imp***)

Height from the ground to the cockpit: 15.6-16 feet(approx)[imp***]

 -------------------------------------------------------------------------

The 777 main landing gear consists of two main struts, each strut with six wheels. The steering system incorporates aft axle steering of the main landing gear in addition to the nose gear steering. The aft axle steering system is hydraulically actuated and programmed to provide steering ratios proportionate to the nose gear steering angles. During takeoff and landing, the aft axle steering system is centered, mechanically locked, and depressurized, this is why the airplane seems less responsive when the speed increases on ground.

The principal dimensions of  a plane decide the maneuverability of  the aircraft and are some figures you need to know so that you can master the aircraft, and gain the best performance out of it.

***i have added 3 stars to these figures as they form the basis for taxiing in FSX.more about this later...

 

 

3.TURNING RADIUS:

 

Figure1: (given below):this diagram basically shows us three radius.

R1 :IS THE TURNING RADIUS OF THE NOSE LANDING GEAR:ie:111.8ft

R2: is the turning radius of the wing tip:ie:151.9ft

R3: is the radius of the tail:ie:129.4ft

*note that the steering angle in the figure given below is 70o.the minimum width of the pavement for 180o turn is: “157.4ft”,if you try to make a such a turn on a runway less than the given width you will end up outside the runway.

Always maintain constant thrust while making a turn, preferably at 5knts-10knts, as the plane is most responsive at these speeds(there are factors that can affect manoverability ,but at the moment we are not taking them into consideration)

Refer to the figure given directly above to get a fair idea of the nose and main landing gear position and the arc they form while making turns.given below is a table for the angle(of turn) to radius of the nose,main gear(outer and inner),wing and tail tip.

 

I haven’t mentioned the outer and main gear in the fig.1 ,just visualize the center of gravity in the middle of the wing,which cause the turning moment about that point.

 

Figure 1

 

4.VISIBILITY FROM THE FLIGHT DECK:

 

 

The diagram given above is self-explanatory.

The height from the ground is 18ft(5.5m)[height of pilot+eye height{1ft}] ,distance from the cockpit to the nose landing  gear is approx. 12ft.

 

edit:pictures have not come up in the post,i dont know what the reason is maybe someone could tell me.

 

 

 

 

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Not to be a total downer, but you all realize all of this (and more) is already contained in the FCTM, right?

 

Those manuals...pesky things...

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Not to be a total downer, but you all realize all of this (and more) is already contained in the FCTM, right?

 

Those manuals...pesky things...

 

+1  

 

Guy's everything you need is in the FCTM & FCOM if you actually attempt to read it.  Regarding FSX limitations, you really just have to adapt the procedures to fit your hardware (pedals)  & rubbish default friction model)

 

Taxi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2

Taxi General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2

Flight Deck Perspective. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.4

Thrust Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5

Backing with Reverse Thrust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5

Taxi Speed and Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5

Antiskid Inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.6

Tiller/Rudder Pedal Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.6

Turning Radius and Gear Tracking . . . . . . . . . . . . . . . . . . . . . . . . . 2.7

Visual Cues and Techniques for Turning while Taxiing . . . . . . . . 2.8

Turns of 180 Degrees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8

180 Degree (Pivot) Turns in Less than 147.6 feet / 45 m . . . . . . . 2.12

Taxi - Adverse Weather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.14

Engine Out Taxi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.15

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Well, FCTM doesn't offer too much information. There are only 13 pages with huge font text and bunch of images. If OP can provide extensive taxi manual, I will take a look for sure.

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Well, FCTM doesn't offer too much information. There are only 13 pages with huge font text and bunch of images. If OP can provide extensive taxi manual, I will take a look for sure.

 

I don't see why you'd need more than what's in the FCTM, but if you need it, then you need it, I guess...

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FCTM doesn't offer too much information.

 

You must be looking at a completely different document to me? How can you say the FCTM provided by the manufacturer of the aircraft 'doesn't offer too much information'  That's pretty funny :) 

 

Edit - Huge font? you must have something different. I have never checked the PMDG docs, I though they are the same as the Boeing FCTM/FCOM?

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Not to be a total downer, but you all realize all of this (and more) is already contained in the FCTM, right?

 

Those manuals...pesky things...

yep .... indeed. :mellow:

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You must be looking at a completely different document to me? How can you say the FCTM provided by the manufacturer of the aircraft 'doesn't offer too much information'  That's pretty funny :) 

 

Edit - Huge font? you must have something different. I have never checked the PMDG docs, I though they are the same as the Boeing FCTM/FCOM?

I do not know, I use PMDG provided FCTM. If I exclude 777-300 operations I do not need (taxi cams, etc), big images, there are just over 8 pages of plain text written in big font at half letter paper.

 

Is that enough? Is that all that can be said about 777 taxi? Can I go and taxi actual 777 after I read FCTM section about taxiing the aircraft?

 

@Kyle: There are many (official) documents about routes, routing, airspaces... yet you decided to make additional tutorial videos. Why is that?

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Well...Captains...i think i said before that the information is from FCOMS,FCTM, AND other sources.It is my effort to put up a document which combines what-ever-is-necessary from these vast documents and present it in a different way,that doesnt mean the images in the document will be remarkably different from the ones PMDG has provided..no..those are standard diagrams nor will the text be superbly different.Frankly i feel a bit let down...my effort wasn't to make a manual which can be compared to a boeing FCOM, my aim was/is to provide those who want to gain information fast and easily without have to scroll through a 1020 pages to find what they want,my aim was to provide standard information which is necessary and forms the basis for aviation before you moved onto Flight Sim environment.if you look closely at the chapters in the content you may see it as a mirror reflection to what the FCOMS,FCTMS have to provide,but these chapters are from personal experience in the simulator trying to match up with the figures in those manuals.I am asking absolutely nothing in return just a good thought.This is for those who want to know how those real world figures compare to the ones obtained in fsx.There is bound to be a difference.This is my experience,if you will.

I hope this answers all your questions or doudts or even skepticism.I dont mean to be rude but if anyone has suggestions that are constructive i will be appreciative of them

warm regards

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there are just over 8 pages of plain text written in big font at half letter paper.

 

Ok, well we are looking at something different. Try getting hold of the actual Boeing FCTM, its not hard.

 

@777cap - Well it is very nice of you to put everything together, however you don't need to scroll through 2000 pages, it should be near the start of the FCTM.  I am curios about what docs PMDG gave you all, have never looked at those docs and my sim PC is in another country.  

 

The Boeing FCTM is very detailed, it covers everything as you would expect from a training manual designed by the people who built the machine lol :)

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