03 May 2024, 10:49 [ UTC - 5; DST ]
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Post subject: 1,550nm Tucson to Orlando nonstop in a stock 501  Posted: 28 Dec 2023, 22:05 |
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Joined: 05/05/09
Posts: 4971
Post Likes: +4801
Aircraft: G44, C501, C55, R66
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I set a personal record today in my 501; 1,550nm, almost 4:30 nonstop. Takeoff weight was about 11,400lbs. Tailwinds averaged 60kts which is helpful but it doesn't explain the entire story. I went straight to FL410 (no step climbs) which took under 40 minutes and pulled the power back to .35 on the AOA with an initial resultant fuel burn of 700lbs/hr. As the fuel burned off, I kept pulling the power back to maintain this AOA and ended up burning 600lbs per hour (90 GPH in a 501!!). This final power was around 95% N1 (max is 102%) and TAS was around 300kts. I landed with slightly better than legal minimums.
These are highly capable, safe and fun to fly machines that can do a lot more than book numbers when flown efficiently.
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Post subject: Re: 1,550nm Tucson to Orlando nonstop in a stock 501 Posted: 28 Dec 2023, 22:35 |
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Joined: 05/05/09
Posts: 4971
Post Likes: +4801
Aircraft: G44, C501, C55, R66
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Username Protected wrote: What, no active winglets?  No winglets, no Williams, no fuel humps, no glass cockpit!
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Post subject: Re: 1,550nm Tucson to Orlando nonstop in a stock 501 Posted: 29 Dec 2023, 00:54 |
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Joined: 12/03/14
Posts: 19252
Post Likes: +23624
Company: Ciholas, Inc
Location: KEHR
Aircraft: C560V
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Username Protected wrote: No winglets, no Williams, no fuel humps, no glass cockpit! Ah, but you were equipped with the best performance mod ever... tailwinds! You should have flown yesterday. At FL380, I recorded winds 250 @ 185 knots. Mike C.
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Email mikec (at) ciholas.com
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Post subject: Re: 1,550nm Tucson to Orlando nonstop in a stock 501 Posted: 30 Dec 2023, 17:37 |
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Joined: 05/05/09
Posts: 4971
Post Likes: +4801
Aircraft: G44, C501, C55, R66
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Username Protected wrote: Dang thats impressive.
I keep thinking I will try to slow down to get batter range but I cant bring myself to go slower. I cant drive the speed limit either. LOL
Mike I think you could probably stretch your Airplane at least 2000nm
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Post subject: Re: 1,550nm Tucson to Orlando nonstop in a stock 501 Posted: 31 Dec 2023, 20:58 |
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Joined: 08/12/08
Posts: 420
Post Likes: +237
Location: Charleston, SC
Aircraft: Big Jet-Little Prop
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Mike,
How comfortable is the airplane at this altitude and airspeed? Do performance charts/models exist for this profile? What is the low speed margin?
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Post subject: Re: 1,550nm Tucson to Orlando nonstop in a stock 501 Posted: 31 Dec 2023, 22:39 |
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Joined: 05/05/09
Posts: 4971
Post Likes: +4801
Aircraft: G44, C501, C55, R66
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Username Protected wrote: Mike,
How comfortable is the airplane at this altitude and airspeed? Do performance charts/models exist for this profile? What is the low speed margin? Yes, long range cruise charts do exist. It’s a Cessna with a giant thick wing on it so it’s not a Learjet in the coffin corner. I would say you’re probably 30 kt above stall speed. Mike
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Post subject: Re: 1,550nm Tucson to Orlando nonstop in a stock 501 Posted: 02 Jan 2024, 02:55 |
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Joined: 12/03/14
Posts: 19252
Post Likes: +23624
Company: Ciholas, Inc
Location: KEHR
Aircraft: C560V
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Username Protected wrote: I would say you’re probably 30 kt above stall speed. At 0.35 AOA, you are 1.7 times stall speed. Mike C.
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Email mikec (at) ciholas.com
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Post subject: Re: 1,550nm Tucson to Orlando nonstop in a stock 501 Posted: 02 Jan 2024, 10:10 |
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Joined: 05/05/09
Posts: 4971
Post Likes: +4801
Aircraft: G44, C501, C55, R66
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Username Protected wrote: I would say you’re probably 30 kt above stall speed. At 0.35 AOA, you are 1.7 times stall speed. Mike C.
Hey Mike, if there’s anyone in the world that can answer this question it’s you. I always thought stall speed changed significantly at higher altitudes. Any idea on the math on this? let’s say the airplane stalls at 100 kn at sea level clean what does it stall at with respect to indicated airspeed at 41,000 feet?
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