GVFlyer
Well-known member
- Joined
- Feb 22, 2002
- Posts
- 1,461
Citation X
SW Berry
Thanks for your post.
I've only flown the C-750 once on a pilot demo. Coming out of the Gulfstream, which flies like a big KingAir, it was a handfull for me. I don't profess to know a lot about it, but let me remind you that the only certified data in your Airplane Flight Manual is that for takeoff and landing. The cruise data only, "has to be representative of a test article in the certification test program." This cruise data normally comes from the lowest ranking test pilot having to take a green (uncompleted) aircraft out and do hour upon hour of drag polars. This makes you the "good hands man" as a typical test point might be 37,200 ft+/- 100 and 221kts.+/- 3 kts. for 5 minutes, so you get pretty good at it after you've done a few hundred of them, but trust me it isn't worth it. Because this data is collected in uncompleted aircraft, for many manufacturers it is wildly optimistic.
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 - 0.86M Range: 2,613nm
Long Range Cruise - 0.82M Range: 2,767nm
Intermediate Cruise - 0.90M Range: 1,889nm
High Speed Cruise - 0.92M Range: 773nm
MMO - 0.93M
Takeoff distance 5,300ft.
(SL,ISA, MGTOW)
Landing distance 3,410ft.
(SL,ISA,MLW)
Initial Altitude FL 430
Direct Cost per hour: $1336.17 (GV Direct Cost is $1470.77 for comparison)
By the way, did you know that Richard Smith was the first pilot at Executive Jet to get a Citation X type rating?
Cheers
.
SW Berry
Thanks for your post.
I've only flown the C-750 once on a pilot demo. Coming out of the Gulfstream, which flies like a big KingAir, it was a handfull for me. I don't profess to know a lot about it, but let me remind you that the only certified data in your Airplane Flight Manual is that for takeoff and landing. The cruise data only, "has to be representative of a test article in the certification test program." This cruise data normally comes from the lowest ranking test pilot having to take a green (uncompleted) aircraft out and do hour upon hour of drag polars. This makes you the "good hands man" as a typical test point might be 37,200 ft+/- 100 and 221kts.+/- 3 kts. for 5 minutes, so you get pretty good at it after you've done a few hundred of them, but trust me it isn't worth it. Because this data is collected in uncompleted aircraft, for many manufacturers it is wildly optimistic.
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 - 0.86M Range: 2,613nm
Long Range Cruise - 0.82M Range: 2,767nm
Intermediate Cruise - 0.90M Range: 1,889nm
High Speed Cruise - 0.92M Range: 773nm
MMO - 0.93M
Takeoff distance 5,300ft.
(SL,ISA, MGTOW)
Landing distance 3,410ft.
(SL,ISA,MLW)
Initial Altitude FL 430
Direct Cost per hour: $1336.17 (GV Direct Cost is $1470.77 for comparison)
By the way, did you know that Richard Smith was the first pilot at Executive Jet to get a Citation X type rating?
Cheers
.
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