Montblack
April 22nd 06, 11:05 PM
I need to re-do my MontJet numbers after, once again, looking at these
Spectrum 33 numbers:
Stick with me here THIS IS FUN!!!
<http://www.spectrum.aero/downloads/competitive_analysis.pdf>
Competitive analysis Spectrum 33 vs. other Jets.
2 engines and... "4 passengers, NBAA IFR Reserves"
[300 nm]
617 lbs. is 84.1 gal ....0+53 (53 min) = 99.6 gph
[600 nm]
688 lbs. is 98.3 gal ...1+41 (101 min) = 58.2 gph
[1000 nm]
1,096 lbs. is 156.6 gal ....2+50 (170 min) = 55.2 gph
[1,600 nm]
1,647 lbs. is 235.3 gal ....4+35 (275 min) = 51.6 gph
<http://www.ainonline.com/Issues/12_05/12_05_spectrum_1.htm>
Using the numbers in this link, I created The MontJet.
Single place, single engine MontJet:
Wing .........................45 lbs
Fuselage ..................45 lbs
Jet engine ..............200 lbs?
Everything else ........60 lbs
MontJet Empty Wt .350 lbs
(Double the Empty Weight of the Cri-Cri)
Spectrum 33 (8-10 passenger) Jet:
From the (above) link that you just read <g>.
Single piece wing .............305 lbs
Fuselage ............................309 lbs
Engine ................................290 lbs (each)
Williams FJ33-4A [1,568 pound-thrust] (each)
From the Competitive Analysis link:
Fuel burn is [roughly] 26-28 gph per engine (FL450)
Weights from this (Specs) link - more MontJet below...
http://www.spectrum.aero/downloads/model_33_prelim_specs.pdf
Gross Takeoff Weight ............7,300 lbs.
Empty Weight ..........................3,620 lbs.
Useful Load .............................3,680 lbs.
Maximum Fuel .........................2,771 lbs.
Maximum Payload ..................2,000 lbs.
[MontJet again]
MontJet Empty Weight [under]..........362 lbs (x10)
Spectrum 33 Empty Weight .........3,620 lbs
MontJet ...........(1x) something a little smaller @ 20 gph
Spectrum 33 ...(2x) FJ33 engines/56 gph (combined)
MontJet ...........(1x) FJ33 engine/25 gph (guessing)
[MJ] ....20 gph x 4 hrs + 1 hr reserve = 100 gallons/ 700 lbs fuel
[S33] ..56 gph x 4 hrs + 1 hr reserve = 280 gallons/ 1,960 lbs fuel
MontJet: (450 kts/FL450)
Empty Weight ............350 lbs
Fuel (4 hrs + 1 hr).......700 lbs
Pilot + stuff .................250 lbs
MTOW .....................1,300 lbs (x5.62)
Spectrum 33: (415 kts/FL450)
MTOW .....................7,300 lbs
That's it. Those are my numbers.
With (4 hrs + reserve) full fuel, my MontJet would be almost 6x lighter than
the S-33 on takeoff.
It's a single seat aerodynamic (20 gph) bullet.
It's a human attached to a jet engine.
Anyway, I think there's a market for this - especially if the speed stays
around 400 kts and the gph number drops with a new/smaller engine. I'll
stick with 20 gph for now. Spectrum 33 is claiming 26-28 gph for each of
their two engines, so I'm in the ballpark! (15 gph at FL45 would be better)
I'd like a smaller version of HondaJet's current (392 lb) engine - one of
the articles said the FJ33 is basically just a smaller version of the
Williams FJ44. The FJ33's = 290 lbs
Understood that Honda and Williams are two different type of jet engines.
Montblack
Deposits welcome
Heading out tonight to see: World's Fastest Indian (...inspiration)
http://www.heightstheater.com/
They play organ music before each show on an original movie-house organ. The
organ (and the organist) rise up from the pit, in front of the screen.
Theater was built in 1926, one year before "talkies" hit it big. <g>
Spectrum 33 numbers:
Stick with me here THIS IS FUN!!!
<http://www.spectrum.aero/downloads/competitive_analysis.pdf>
Competitive analysis Spectrum 33 vs. other Jets.
2 engines and... "4 passengers, NBAA IFR Reserves"
[300 nm]
617 lbs. is 84.1 gal ....0+53 (53 min) = 99.6 gph
[600 nm]
688 lbs. is 98.3 gal ...1+41 (101 min) = 58.2 gph
[1000 nm]
1,096 lbs. is 156.6 gal ....2+50 (170 min) = 55.2 gph
[1,600 nm]
1,647 lbs. is 235.3 gal ....4+35 (275 min) = 51.6 gph
<http://www.ainonline.com/Issues/12_05/12_05_spectrum_1.htm>
Using the numbers in this link, I created The MontJet.
Single place, single engine MontJet:
Wing .........................45 lbs
Fuselage ..................45 lbs
Jet engine ..............200 lbs?
Everything else ........60 lbs
MontJet Empty Wt .350 lbs
(Double the Empty Weight of the Cri-Cri)
Spectrum 33 (8-10 passenger) Jet:
From the (above) link that you just read <g>.
Single piece wing .............305 lbs
Fuselage ............................309 lbs
Engine ................................290 lbs (each)
Williams FJ33-4A [1,568 pound-thrust] (each)
From the Competitive Analysis link:
Fuel burn is [roughly] 26-28 gph per engine (FL450)
Weights from this (Specs) link - more MontJet below...
http://www.spectrum.aero/downloads/model_33_prelim_specs.pdf
Gross Takeoff Weight ............7,300 lbs.
Empty Weight ..........................3,620 lbs.
Useful Load .............................3,680 lbs.
Maximum Fuel .........................2,771 lbs.
Maximum Payload ..................2,000 lbs.
[MontJet again]
MontJet Empty Weight [under]..........362 lbs (x10)
Spectrum 33 Empty Weight .........3,620 lbs
MontJet ...........(1x) something a little smaller @ 20 gph
Spectrum 33 ...(2x) FJ33 engines/56 gph (combined)
MontJet ...........(1x) FJ33 engine/25 gph (guessing)
[MJ] ....20 gph x 4 hrs + 1 hr reserve = 100 gallons/ 700 lbs fuel
[S33] ..56 gph x 4 hrs + 1 hr reserve = 280 gallons/ 1,960 lbs fuel
MontJet: (450 kts/FL450)
Empty Weight ............350 lbs
Fuel (4 hrs + 1 hr).......700 lbs
Pilot + stuff .................250 lbs
MTOW .....................1,300 lbs (x5.62)
Spectrum 33: (415 kts/FL450)
MTOW .....................7,300 lbs
That's it. Those are my numbers.
With (4 hrs + reserve) full fuel, my MontJet would be almost 6x lighter than
the S-33 on takeoff.
It's a single seat aerodynamic (20 gph) bullet.
It's a human attached to a jet engine.
Anyway, I think there's a market for this - especially if the speed stays
around 400 kts and the gph number drops with a new/smaller engine. I'll
stick with 20 gph for now. Spectrum 33 is claiming 26-28 gph for each of
their two engines, so I'm in the ballpark! (15 gph at FL45 would be better)
I'd like a smaller version of HondaJet's current (392 lb) engine - one of
the articles said the FJ33 is basically just a smaller version of the
Williams FJ44. The FJ33's = 290 lbs
Understood that Honda and Williams are two different type of jet engines.
Montblack
Deposits welcome
Heading out tonight to see: World's Fastest Indian (...inspiration)
http://www.heightstheater.com/
They play organ music before each show on an original movie-house organ. The
organ (and the organist) rise up from the pit, in front of the screen.
Theater was built in 1926, one year before "talkies" hit it big. <g>