Fuel Burns CRJ vs 737-700

[dispatchguy]

I'd bet soon, we are going to see 747's flying between LAX and SAN.

UAL was actually doing that in 1985; I remember being at a certain military boot camp near the SAN airport, and daily there was a B747-100 that would run SAN-LAX-HNL

OOH RAH!

 

[Bob_Sacamano]

Now that's a funny signature.

 

[BigPappa]

Gyro? Like I said before, you have issues. As far as the Homosexual references; it sounds as if you felt spoken to. I have nothing against it though . More pride to ya!

 

[Bob_Sacamano]

So you're not the Fred Flintstone-blowhard JFK CRJ captain named Alex?

Not when you explicitly make gay references in about half of your posts.

 

[Poahi]

UAL was actually doing that in 1985; I remember being at a certain military boot camp near the SAN airport, and daily there was a B747-100 that would run SAN-LAX-HNL

OOH RAH!

I remember some discussion on that at this forum. We also have a 767 flying between HNL-OGG and I remember a NWA DC-10 going between MKE-MSP. I think that one went on to NRT if memory serves.

 

[BigPappa]

No I am not. Not even close. Nice attempt at slander though.

 

[Long Time Gone]

The CRJ-200 is burning about 2500 lbs/hr at .74 up above FL300.

The only CRJ I've ever seen burn 1250 a side (2500 total per hour) is a CR7 at FL390 or higher doing about .75 with a light weight. The CR7 burns about 1600 a side doing .77 at about FL350 and once you get above FL370 or so, it'll drop below 1400 a side depending on speed.

 

[Flyer1015]

Which airplane can take off a treadmill quicker.... the 737-700 or the CRJ?

 

[n757st]

The only CRJ I've ever seen burn 1250 a side (2500 total per hour) is a CR7 at FL390 or higher doing about .75 with a light weight. The CR7 burns about 1600 a side doing .77 at about FL350 and once you get above FL370 or so, it'll drop below 1400 a side depending on speed.

I've seen 1150 per side in the -200, that said we were light and at FL350. I find that if we are heavy, 2600 lbs, regular weights, 2500, lighter weights, maybe a little less.

 

[Minimaniac]

Ok, my contribution towards actually providing useful information to this discussion...

Specific Range for the E175: (nm/lb)

Weight**** Alt *******.78M******* LRC

80,000 ****FL350 ***************0.122
*********FL300 *****0.107 ******0.118
*********FL250 *************** 0.111

76,000 ****FL350 ****0.122 ****** 0.127
*********FL300 *****0.109*******0.124
*********FL250 ****************0.115

70,000 ****FL350 ****0.129 ******0.134
**********FL300 ****0.113 ***** 0.131
**********FL250 *****.******** 0.120



These are just some representative numbers. 80,000lbs is generally what a fully loaded 175 weighs upon reaching cruise for a longer leg (2-2.5hr). 76,000lbs is a normal weight for a highly loaded 175 on a shorter regional hop, and 70,000 lbs is typical for short VFR legs with a 3/4 load. .78M is what we are generally filed for, and LRC is long range cruise, which of course varies (usually in the .70-.73M range). Often we pull back to .74 or .76, so a value in between .78 and LRC is typical for us. Any missing values above are due to lack of data in the manual for various reasons.

Hopefully this data is useful for comparison. I would be interested to see what a 737 does, if someone would please post.

I know the longer CRJ's are probably posting better numbers; I would be interested to see those as well. My expectation is that the heavier iron also has better numbers, at least when burn per passenger is considered. Anyhow, I offer the above in hopes of having an informative discussion, not a p1ss1ng contest.

Sorry for the formatting, but FI does not seem to like the way I tried to space the columns first time around.