CL300 Sets speed record

[NJA Capt]

YIKES!

I guess this pretty much debunks the myth that Citation X guys are criss-crossing the country all day long doing M0.92...

Of course not....which aircraft IS going to takeoff at MTGW and go straight to Mmo @ FL410 in level flight????
We hardly ever carry 8 pax anyway. Either way, even at max wt, we usually are able to cruise at .89 for the first hour and .90 or above the rest of the way.

 

[Hawkered]

....and look sexy while you're doin' it man. That X is the best looking bird in the sky!!

 

[LXJ31]

Gulfstream took a Citation X in on a trade and let the flight test engineers have it for qualitative testing before it was resold (this competitive analysis is something many manufaturers do, Bombardier leased and instrumented a GV, but they were disappointed in their results; Cessna sent an Experimental Test Pilot to GV initial at FSI). The engineers ballasted the X to 8 pax and put the requisite test stations and orange wire in the jet and this is what they came up with including NBAA IFR reserves:

Normal Cruise - M 0.86 Range: 2,613nm
Long Range Cruise - M 0.82 Range: 2,767nm
Intermediate Cruise - M 0.90 Range: 1,889nm
High Speed Cruise -M 0.92 Range: 773nm
MMO - M 0.93M

Takeoff distance 5,140ft.
(SL,ISA, MGTOW)

Landing distance 3,410ft.
(SL,ISA,MLW)

Initial Altitude FL 430

When ballasted for 4 passengers the engineers got:

M 0.85 - 2,978 nm
M 0.82 - 3,098 nm
M 0.92 - Not Tested

The test crew observed that the highest cruise speeds occured in the mid- 30's, but fuel consumption increased by almost 50 percent. Flying in the 40's dropped cruise speed by 25 to 35 knots, but available cruise speed was still up to 499 knots.

Direct Cost per hour: $1453 (CL300 Direct Cost is $1297, G200 is $1348 for comparison)

The runway 24 length at CRQ is 4897 ft, according to a web source and, without the chart in front of me, has a sharp uphill grade.

Whats avg. MGTOW for the NJA Citation X?

I'd like to know the exact numbers we used are too, maybe Flex357 knows.

 

[El Chupacabra]

CRQ is not level but has a slope of ZERO.

330' at one end and 326' at the other.

 

[LXJ31]

Well...like I said, don't have the chart handy.

 

[GVFlyer]

Whats avg. MGTOW for the NJA Citation X?

The analysis I'm looking at says Citation X maximum takeoff weight is 36,100 lbs. I don't have any idea what average mission weights at NJA are for the C-750.

GV

 

[Diesel]

The Ultra can take off max gross and go right to 410 and hit .755 all day long.

Yeah that's a sexy plastic plane.

 

[Hawkered]

The Ultra is a fantastic plane! There is not another plane that isn't better for short-field hot high in the entry level class. That thing can sure top weather when it needs to. I actually have considered going to it.

 

[LXJ31]

Could the Ultra make that trip from CRQ to BGR? Never flown one of those either.

 

[Hawkered]

No it would have to stop in Kansas and if the weather were bad in the NE, it would have to stop in, say, PA as well.

 

[flexlrpilot357]

I spoke with the Flexjet Chief Pilot today. They departed CRQ at about 1,000# below max takeoff weight (38,650#), with six adults, 2 children, and plenty of bags.

(NJACapt) Of course not....which aircraft IS going to takeoff at MTGW and go straight to Mmo @ FL410 in level flight????

After departure, they climbed directly to FL410, flew the entire trip at MMo (.83M), and landed at Bangor with enough gas to go on to Goose Bay (+2700#).

It was a comfortable ride too, with the flat floor and spacious cabin.

 

[GVFlyer]

I spoke with the Flexjet Chief Pilot today. They departed CRQ at about 1,000# below max takeoff weight (38,650#), with six adults, 2 children, and plenty of bags.

After departure, they climbed directly to FL410, flew the entire trip at MMo (.83M), and landed at Bangor with enough gas to go on to Goose Bay (+2700#).

It was a comfortable ride too, with the flat floor and spacious cabin.

???

I'm not trying to be argumentative here - just understand the math. The press release said they averaged 572 miles an hour which is 497.58 knots. It further says that the average tail wind was 47 knots. So, 497.58 average speed minus the 47 knot tailwind equals 450.58 knots or a speed of M 0.76 in the air mass.

To check my math, I took the distance between CRQ and BGR - 2335 nm and divided it by 497.58 and came up with 4 hours and 41.5 minutes which is the time Bombardier is claiming for their record.

M 0.83, which is 476.06 knots above the Tropopause doesn't enter into the equation anywhere.

GV

 

[FraxJockey]

Speed

I suppose if they could fly .83 mach ALL the time they would, but the fact of the matter is they can't...what about below 10000' or when Vmo in no where near Mmo. That would account for any discrepancy, or maybe the fact that they didn't go straight line either. That's my take on it. I'm sure they flew .83mach every opportunity they could.

 

[NJA Capt]

http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/28b5a42ea6ab5bd086256df100511ceb/$FILE/T00005NY.pdf

CL300 (Citation X)
SL-8000' Vmo 300 (290)
8000-29K Vmo 320 (350)
above 29K Mmo 0.83 (0.92)

Max Ramp 38,650 (36,400)
Max landing 33,750 (31,800)
Max fuel 14,162 (13,000)

Max T/O alt 8000 (14,000)
Max cruise alt FL450 (51,000)

Takeoff thrust 6924# (6764#)

Date certificated: June 4, 2003 (May 31, 1996)

What is the fuel burn on the CL300? With the rough numbers presented so far it appears that the CL300 (2400 pph) has a higher fuel burn than the CX (<2000 at max cruise).

 

[flexlrpilot357]

Inject some common sense into that math. They weren't at Mach 0.83 in their first segment climb, or on short final, for Pete's sake!

NJACapt: I'd say the CL300 burns about 2400... in the first hour. After that, it's more like 1600-1700.