Homebuilt twin bizjet project which seems to have gone very quiet!

The Aurora is a home builders derivative of the Piagio Avanti P-180. The three flying surface arrangement provides numerous advantages, some aerodynamic and some ergonomic, but also represents a technological elegance not duplicated until now. Aurora's overall size is very similar to the Aerostar 601, but the cabin interior is lengthened and widen slightly to provide Baron class 6-place seating. The emerging Aero-Deisel engine designs were selected for the baseline design as a reliable and low cost horsepower / dollar powerplant that ultimately inspired the overall Aurora configuration. Automotive, turbine and fan jet engines are also viable possibilities. Future extensions of the design include pressurization possibly in the experimental version.

he wing system

The three surface wing system provides adequate wing area necessary for high speed cruise and a reasonable stall speed using a 30% chord, 70% span fowler flap system. The wing area is about 20% less than a similar light twin because it's empty weight is lighter by about 1400 pounds. A high cruise speed was one of the key design requirements to provide relatively high efficiency, range and block to block times. Some runway length was sacrificed to achieve this goal, but this compromise affords speed to those of us who are time conscious. The builder will have to make a canard but it will be easy to assemble and relatively small (about 8 feet from tip to tip). Laminar flow airfoils are used on all flying surfaces. Because of the "canard-like" stall characteristics of the three surface arrangement the front wing unloads before the main wing resulting in a gentle nose down at the stall break.

the cabin

The fuselage is about 24 feet long from nose to rudder post. The Aurora is a cabin class aircraft that can be constructed in a relatively small space. Interior cabin volume and seating is similar to the Seneca IV but in reverse. Cabin width at the pilot/copilot seats is about 47 inches and widens to a maximum width of 50 inches near the second row of seats. Cabin width at the aft seats is about 51 inches. Cabin height at the pilot/copilot seats is about 45 inches and tapers to about 48 inches at the aft seats. A small aisle exists between the first two rows of seats. Cabin access/egress is via a single overhead door and step between the front and mid seats on the left side of the fuselage (ala Lear and Avanti).

The aircraft is being designed with a 4300 lb gross weight at +6,-3 G limit loads. Following structural testing the gross weight will be increased for +4.4,-2.2 G limit loads (utility category). With an estimated empty weight of 2250 to 2300 lbs, Aurora will have a payload of about 1700 lbs. Aurora has been designed to accommodate 6 full size, FAA 170 lb passengers, but a 95% human model (6'-4") was used to verify interior space for the pilot/copilot. Just about right for the wife and kids with plenty of luggage (51 cubic feet).


Dual control yokes are provided for the pilot and co-pilot seats. Multi-function grips provide a great degree of hands on control. Ailerons and elevator are pushrod actuated while the rudder is cable operated. There is also pitch, yaw and roll trim capability. The flaps of the canard and main wings are interconnected via cables with electric asymmetry lock out.

the landing gear

Aurora uses a fully retractable tricycle landing gear. The mains use tapered spring steel such as found on the Cessna P-210 style, while the nosewheel is sprung via a gas charged air/oil cylinder. Retraction is accomplished using electro-hydraulics. Each gear bay is completely closed in flight by mechanically sequenced doors. Landing gear track and wheelbase are both wider and longer than the requirements for turn over angles in the FAR's, so ground handling should be good.

wing span
wing area
empty weight
useful load
gross weight
fuel capacity
110 ft2
up to 7
2,550 lb
1,716 lb
4,266 lb
77 gal
1200 nm


takeoff distance, ground roll
rate of climb
max speed
cruise speed
landing distance, ground roll
service ceiling
2100 fpm
290 mph

limiting and recommended speeds

design manoeuvring speed (Va)
never exceed speed (Vne)
stall, power off (Vsl)
landing approach speed

All specifications are based on manufacturer's calculations