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Spectrum Aeronautical Spectrum 33

Spectrum Aeronautical Spectrum 33

Type (Muster)
Very light business-jet (Geschäftsreiseflugzeug)

Country (Land)
USA

Manufacturer (Hersteller)
Spectrum Aeronautical LLC
120 Birmingham Ste 110
Cardiff by the Sea, CA 92007
USA

Phone: 001-760/479-0822
Internet: www.spectrum.aero

General (Allgemeine Angaben)
Crew (Besatzung): 1
Passengers (Passagiere): 6 - 9
Baggage volume (Gepäckraum): 2,07 cu m

Power plant (Antrieb): 2 x Williams International FJ33-4A
Thrust (Schub): 2 x 3000 lbs (1361 kg)
Fuel consumption (Kraftstoffverbrauch): 466 lbs/hr at 407 kts, less than half the Cessna Citation CJ2

Dimensions (Abmessungen)
Length (Länge): 14,00 m
Height (Höhe): 3,56 m
Span (Spannweite): 12,83 m
Wing area (Flügelfläche): 15,79 sq m
Aspect ratio (Flügelstreckung): 10,4

Cabin length (Kabinenlänge): 5,33 m (between bulckheads, including an aft lavatory)
Cabin width (Kabinenbreite): 1,47 m
Cabin height (Kabinenhöhe): 1,47 m

Weights (Massen)
Empty weight (Einsatz-Leermasse): 1642 kg
Max. payload (Nutzlast): 953 kg
Max. fuel (Max. Kraftstoff): 1257 kg
Max. zero fuel weight (max. Masse ohne Kraftstoff): 2630 kg
Max. take-off weight (Max. Startmasse): 3311 kg
Max. landing weight (Max. Landemasse): 3311 kg

Performance (Flugleistungen)
Maximum cruise speed (max. Reisegeschwindigkeit): 769 km/h / Mach 0.72
Stall speed, clean (Überziehgeschwindigkeit): 170 km/h, or 137 km/h with flaps out
Max. operating altitude (Dienstgipfelhöhe): 13716 m m (45000)
Initial cruise altitude (Anfangsreiseflughöhe): over 10670 m at max. take-off weight
Rate of climb (Steigrate): 3200 ft/min (975 m/min)
Time to climb to 45000 ft (Steigzeit auf 13715 m): 20 minutes
Balanced take-off field length (Startstrecke): less than 915 m
Landing distance (Landestrecke): about 825 m
Range (Reichweite)
- over 3704 km, VFR rules
- over 3240 km, IFR rules

Costs (Kosten)
At the first presentation in November 2005, a price of 3,65 million US-Dollars was mentioned.

Customers (Kunden)
Spectrum is not yet taking orders for the new jet. That will happen around a year before certification.

Competitors (Konkurrenz)
Cessna Citation CJ-2+

Remarks (Bemerkungen)
The Spectrum 33 is a very light business jet in the class of the Citation 2. Spectrum Aeronautical claims that it will consume half as much fuel as current-production aircraft having the same cabin, range and speed. Its main feature is the use of what the company calls a next generation carbon-graphite material called fibeX, developed in conjunction with Rocky Mountain Composites. The fuselage is made in one piece, including windows and door frames, and weighs only 309 pounds, while the co-cured wing weighs 305 pounds. A fuselage can be wound in five hours. Instead of a honeycomb core, sine wave stiffeners are used.
The Spectrum 33 features a composite spring main landing gear.
In the cockpit, there are sidesticks and three large LCD screens. For the prototype, Avidyne PFD´s along with Garmin GPS and radios are used, but a final production configuration was not yet chosen in the autumn of 2005.
All electric aircraft systems with the exception of the brakes are used.
Spectrum Aeronautical is a new company, led by Linden Blue, who was active with Gates Learjet and at one time President and CEO of Beech Aircraft. Chief Engineer is Dan Cooney, who previously worked for Scaled Composites.
Manufacturing facilities for the Spectrum 33 are in Spanish Forks, Utah. The development through to initial production is covered by a group of investors.

History (Geschichte)
The existence of the Spectrum 33 was first unveiled at the NBAA convention in Orlando in November 2005.
The Spectrum 33 made its first flight on Saturday, January 7, 2006. The aircraft soared off from Spanish Fork's (Utah) relatively short, 4,500 ft elevation runway in about 750 ft. It was then repositioned to the Provo, Utah airport, a landing facility with a considerably longer runway. William “Bill” Davies, Spectrum's Chief of Flight Test and Ian Hollingsworth, another veteran test pilot, were at the controls.
At the rime of the first flight, Spectrum Aeronautical said that once comprehensive testing of the first proof-of-concept aircraft is complete, it will freeze the design and build production conforming flight test aircraft to be used for certification testing. FAA Type Certification of the Spectrum 33 was slated for late 2007 or in 2008.
On 25 July 2006, the Spectrum 33 prototype crashed on take off from Spanish Forks, Utah, killing the test pilots Glenn Maben, director of flight operations, and NathanForrest, vice-director of Spectrum. A preliminary NTSB report found that it was the first flight after maintenance, and that a translation linkage to the ailerons was possibly re-installed in a way that reversed roll control – that is a left demand from the pilot sidestick would result in a right roll. It was said that after take-off the Spectrum 33 immediately entered a right roll, with the wingtip touching the ground.

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Last updated 17 August 2006

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