Alchemy
Well-known member
- Joined
- Dec 22, 2003
- Posts
- 492
http://www.embraercommercialjets.com/english/content/erj/erj_145xr.asp?tela=payload_vs_range
Here's the answer according to Embraer. Their numbers seem a little bit optimistic if you ask me. According to them the XR can do 2100 NM with 50 people and about 2400 NM with 15 people. Maybe if you fly .65 the whole and you dead stick it in at the destination. Either that or I'm missing something here.
As far as I know the fuel capacity on the legacy is the same as the 135LR, so I have no idea why they claim it can go 3000 NM. It can go to FL390, has the A1/3 engines which burn less fuel. I suppose If you climbed like a bat out of hell at 220 knots up to FL 390 then cruised at .65 you might be able to squeeze something close to 2000 NM out of a legacy, but I don't really understand how you could get 3000 NM.
Let's say you burn 750lbs/side at FL 390 and about 350 true. With the tanks topped off at 11,000 lbs in a legacy minus, say 1000 lbs for climbing at an average of 250 true, That gives you about 7 hours of endurance until you're a glider. I can't see how you'd get much more than 2000 NM out of a legacy with any kind of reserve, but maybe I'm missing something.
Here's the answer according to Embraer. Their numbers seem a little bit optimistic if you ask me. According to them the XR can do 2100 NM with 50 people and about 2400 NM with 15 people. Maybe if you fly .65 the whole and you dead stick it in at the destination. Either that or I'm missing something here.
As far as I know the fuel capacity on the legacy is the same as the 135LR, so I have no idea why they claim it can go 3000 NM. It can go to FL390, has the A1/3 engines which burn less fuel. I suppose If you climbed like a bat out of hell at 220 knots up to FL 390 then cruised at .65 you might be able to squeeze something close to 2000 NM out of a legacy, but I don't really understand how you could get 3000 NM.
Let's say you burn 750lbs/side at FL 390 and about 350 true. With the tanks topped off at 11,000 lbs in a legacy minus, say 1000 lbs for climbing at an average of 250 true, That gives you about 7 hours of endurance until you're a glider. I can't see how you'd get much more than 2000 NM out of a legacy with any kind of reserve, but maybe I'm missing something.