Jump to content

Recommended Posts

Posted
Maybe H.H., when your'e an old fart like me, you remember the things from the Mk1 of everything!067_bash.gif.26fb8516c20ce4d7842b820ac15914cf.gif

Hah! That's funny...

 

...and telling!!

 

 

Posted

planey why would the early Airbus A-300 only get off the ground due to the curvature of the earth? ALL modern twin engined jets have excess performance on two engines and do most take-offs on reduced thrust for economic reasons perfectly legally. They are all certified to the same standard for climb gradient in various situations, and are overpowered except at high and hot aerodromes. Is 108,000 lbs of thrust not enough? Nev

 

 

Guest Howard Hughes
Posted
Maybe H.H., when your'e an old fart like me, you remember the things from the Mk1 of everything!067_bash.gif.26fb8516c20ce4d7842b820ac15914cf.gif

I hope I do!012_thumb_up.gif.cb3bc51429685855e5e23c55d661406e.gif

 

Posted
Is 108,000 lbs of thrust not enough? Nev

When your MTOW is 170 *tons* then it starts to look a bit p!ss weak. They are rated for a max takeoff of 2600m though, so I don't really know what the curvature of the Earth has to do with it.

 

Fairly sure all airplanes need to be able to maintain a sustained climb of at least 3 degrees to be passed as a compliant design, anyway.

 

- boingk

 

 

Posted
When your MTOW is 170 *tons* then it starts to look a bit p!ss weak. They are rated for a max takeoff of 2600m though, so I don't really know what the curvature of the Earth has to do with it.Fairly sure all airplanes need to be able to maintain a sustained climb of at least 3 degrees to be passed as a compliant design, anyway. - boingk

3 degrees is very little, only marginally bit better than relying than the curvature of the earth for a successful take off roll.

 

A 3 degree angle is as follows:

 

1079182557_3degreeangle.png.2f5c7bd6f99aff4da57f19abecc2c92b.png

 

 

Posted

Yeah but still... humans accomplish some pretty amazing things and sometimes theres that 'gray area' where you're not really sure of fact from fiction.

 

Whats the 3deg picture demonstrating it in reference to? An iPhone? Laptop computer?

 

- boingk

 

 

Posted

They have to do that on ONE engine so with double the power they go OK. A four engined plane has to do the same on 3 engines so on four it does not go that much better. Nev A four engined plane goes better with two out than a twin does... Nev

 

 

Posted
Yeah but still... humans accomplish some pretty amazing things and sometimes theres that 'gray area' where you're not really sure of fact from fiction.Whats the 3deg picture demonstrating it in reference to? An iPhone? Laptop computer?

 

- boingk

Just another illustration to demonstrate how shallow a 3 degree angle (and hence a 3 degree climb) looks like.

 

 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...