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Forum: Tech Log

15th Apr 2014, 20:15

Replies: 0

Read and front wing Spar

Views: 1,297

Posted By RarraMan

Read and front wing Spar

Hi guys,

¿does anyone familiar with A330, boeing 777, or boeing 767 knows the wing spars location as a percentage of chord?

Torenbeek suggests 15% for front spar and 60% for rear spar but i...

Forum: Tech Log

5th Apr 2014, 13:56

Replies: 0

JT8D-17 SFC

Views: 1,154

Posted By RarraMan

JT8D-17 SFC

Hello guys,

I need the specifications of JT8d-17 (or a similar engine) at around 35000 feet. I need to know its SFC as a function of Mach number.

thanks

Forum: Questions

17th Nov 2013, 10:49

Replies: 4

Reserve Fuel for a 9000km trip

Views: 1,892

Posted By RarraMan

Reserve Fuel for a 9000km trip

Guys, How much trip fuel and reserve fuel should I load for a 9,000 km (4,900 nm) trip. Let's say my aircraft MTOW is around 230,000 kg (507,000 lb) . FL350.

After doing some maths I've estimated:...

Forum: Tech Log

17th Nov 2013, 10:13

Replies: 4

A330 L/D & SFC

Views: 3,714

Posted By RarraMan

Thanks guys, Then, assuming a SFC of 0.565...

Thanks guys,

Then, assuming a SFC of 0.565 lb/(lbf·h) I guet A breguet range parameter of 28000-29000 Km (15100-15600 nm) which I think seems logic.

Forum: Tech Log

16th Nov 2013, 12:54

Replies: 4

A330 L/D & SFC

Views: 3,714

Posted By RarraMan

A330 L/D & SFC

Hello guys, I need an estimation about the L/D ratio and SFC of the A330 at its typical cruyse speed (M=0.82).

I need them because Im trying to estimate the Breguet Range paramater:
...

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