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High Performance Experimental Aircraft Kit designed specifically for a Fly By Wire Control System! Check it out!
FBW (Fly By Wire) systems are in almost every modern Commercial Transport Airliner on earth, starting with
the Concorde in 1976 and have proven themselves
to be the norm for the industry. In May 1972
the first American airplane flew without
mechanical connections between
pilot and control surfaces.
Almost 47 years ago.
Time is NOW!
Now we are pulling the FBW technology in to the
Experimental Aircraft sphere. Gone are the days of complex,
heavy and maintenance intensive mechanical systems.
With digital control it opens up abilities that
were not even possible before!
With the press of a RED button, immediately
commands the airplane via the computers
to go safely into straight and level flight.
Flight envelope protection, and having
on-screen guidance for best glide in power off,
best angle or rate of climb, coordinated turns,
all are easily touch screen selectable by the pilot.
Having both a Primary and Secondary ADAHRS
(Air Data Attitude Heading Reference System)
provides an even higher level of Reliability.
These keep the computers supplied with
critical flight data! Including attitude,
airspeed, altitude, magnetic heading,
G-meter, turn rate, DG, VSI, AOA,
AOS, OAT, and TAS.
(lots of acronyms in aviation...)
This Aircraft is Exciting and Brilliant!
Computers are inherently smarter and faster!
They posses the ability to make critical decisions
thousands of times a second for the optimum result!
Safety and reliability are of the upmost importance.
With many computers, several electrical power systems,
and 4 control surfaces each for Pitch, 4 for Yaw, 6 for
Roll, all having back-up for tremendous overall safety!
Military grade side stick control grip with switches
and buttons used for the most common functions.
There is even a small joystick on the left ahead of the
throttle quadrant, always on direct law computer
control, it overrides the control outputs, and with
a twist to the knob controls the rudder position.
When not in motion, a two button press, activates a hold feature on all of the surface actuators bringing them to a neutral position
so a through pre-flight for the entire aircraft can be done. Allows you to check for center point alignment and that no movement
is found. Then cancelling itself automatically after 10 minutes.
"State of the Art" high precision Hall Effect PWM
(Pulse Width Modulation) contact-less and
1,000,000 cycle rated devices send information
from Throttle, Mixture, and Rudder Pedal positions
as well as the back-up joystick to the computers.
The electrical systems and components all operate on
28 volts, keeping the amperage needed down to about
1/2 of a what a typical 14 volt system uses. Smaller wire
makes the entire electrical system much lighter.
Advancing the field of Aviation with proven technology!
Semi Conventional Gear
(Glider Style Taildragger)
VNE: 318 MPH
Empty Weight: 510 Lbs.
MTOW (Max Take Off Weight): 875 Lbs.
Wingspan: 28' (including Dr. CD's)
Wing Area: 68.8 Sq. Ft.
Wing loading @ MTOW: 12.7 Lbs. per Sq. Ft.
Wing maximum g-load: +8/-6
Wing aspect ratio: 10.3
Stall speed: 63 MPH
Roll Rate: 270 degrees per second
Continental O-200 100HP (stock @ 2750 RPM)
Fuel capacity: 7 gallons
(Fuel is contained in a bladder tank in the pylon and nacelle above the engine. Fuel shut-off is located above and behind the pilots shoulder on the firewall where it is easily accessible)
An all Carbon Fiber high aspect ratio natural laminar flow wing with Dr. CD's (aka: blended winglets or sharklets, Dr. CD is our name "Drag reduction Control Device" for our wingtip devices) I came up with the design in 2002 and have waited this long to finally get them
on an airplane! They look very similar to the ones Airbus is using on their A350X
(as pictured) but ours don't extend behind the trailing edge as much.
Dr. CD's are constructed with a composite Kevlar®/Carbon Fiber Rod spar and S-glass (30% stronger than E-glass) on the vertical skins to accommodate the placement of concealed antennas. The Dr. CD's are removable for access as well as for wing removal/transportation.
The engine is placed below the wing making for various engine options such as:
Rotax, Continental C-85, O-200 up to a Lycoming AEIO-360.
With a high wing position and low horizontal stabilizer placement makes it
practically impossible for the tail to get blanketed at any angle of attack!
Spoilerons, Tailerons, Rudders, and V-tail Ruddervators are all 100% balanced.
The entire fuselage is in clean undisturbed air. An aerodynamic shaped pylon rises vertically above the wing to a small nacelle that contains the belt driven prop shaft. A pusher type 4-bladed composite propeller with a pressure recovery style spinner finishes off the clean nacelle. (with a normal pusher type aircraft the prop is in heavily disturbed turbulent air from going around the entire fuselage, over the wings, and across the tail surfaces before contacting the prop)
Almost the entire exterior surface of the aircraft is Carbon Fiber composite, the fuselage structure is pulled from 2 mold halves, wing and spar, tail surfaces, and the Dr. CD's (blended winglets) are also molded parts. There is a well re-enforced Carbon/Kevlar® cockpit, a Titanium /Carbon/Kevlar® composite firewall on forward side of the engine,
a thin Kevlar®/Nomex blanket above and aft of the engine to protect the integrity
there too. Since there are no mechanical control connections (just electrical) aft of
the engine, the fuselage detaches to provide access for maintenance/inspection
and ground transportation.
Chromoly tubing is utilized for the engine mount, wing tie-in and main landing gear structure. The front of the engine is supported so it needs less structure at the rear (forward) and shares the weight at the prop flange further reducing vibration.
That way you have no worries of the engine coming loose if you lose a propeller blade.
Titanium push-rods connect the actuators to the control surfaces. The battery compartments have temperature sensors, a smoke/fire detector is located in the
engine compartment and voltage/amperage will be closely monitored too. An air
powered starter will be used to lighten things up a bit more. The starter will engage
on the lightweight flywheel at the front of the engine (O-200 installation) that also
contains the dual hall-effect crank sensors for the electronic ignition, hand propping
is still possible.
There are no landing gear legs or wheel pants to cause drag! Glider style main gear, with dual tubeless 11.4 X 5.00 tires on Beringer wheels, (the hydraulic Beringer brake system has one dual piston caliper on each wheel and has a static load rating of 1,518 lbs) Small retractable outriggers extend out of the bottom side of the fuselage for landing/taxi parking. Steerable tailwheels are located on the bottom and inside of each rudder.
Optional: Retractable 120 mm (4-3/4") tailwheel extends out of the bottom of the fuselage behind the horizontal stabilizer and uses a small lightweight air cylinder for actuation.
(a small lightweight, high pressure, composite air tank is already onboard for the air starter)
Cockpit height is 30.2" high, field of view horizontally is well over 300 degrees, and from 10 degrees down over the nose to 90+ degrees upward. Large lightly tinted canopy gives unobstructed views especially because the wing sits above and behind the reclined pilots seat. A racing harness with quick release restrains the pilot.
An all glass instrument and avionics panels display system controls and information. Electronic Ignition lightens up things compared to having 2 heavy magnetos and gives much better performance. Again this will have two entirely separate 28 volt power sources, with a redundant back-up and automatic power switching. Going electronic takes mechanical load off the engine and gives optimum performance for altitude, air density variations, and power settings.
Speaking of batteries... 6 lightweight and compact Li-Fe (Lithium Iron Phosphate)
batteries (3 sets of 2, and all 6 batteries weigh a total of 10.2 lbs!) and a lightweight 28 volt alternator will supply the needed power. The system acts as a UPS, (Uninterruptible Power Supply) if alternator power is lost, the batteries share power through a "Static Switch" with no interruption in power and has enough capacity for hours not minutes, and can sustain flight much longer than there is fuel onboard!
The routing of Power and Signal from each system follows a different path and in critical areas such as the engine compartment are protected from fire by being encased in a fire resistant material. There is no bundling of wires/cables or going through the same bulkhead locations with different systems.
This aircraft is designed to meet minimums and surpass (where surpassing is allowed, such as safety) all of the International Formula One Air Racing rules!
Airbus A350Xwb Sharklets
Redundancy is an understatement!
There are 6 Ailerons, comprised of 2 Spoilerons, and 1 Flaperon
on each side, all 6 are individually driven. The outboard Spoilerons are driven with
a redundant actuator that has two separate 28 volt power sources and two different computer signal sources. There are a total of 12 actuators for the control surfaces,
and 1 for Throttle, 1 for Mixture for a total of 14.
Having this configuration allows for some really cool things!
Computer controlled wing surfaces can have the outboard ailerons move less,
then more on the middle set and most on the inboard set for equivalent roll rate performance. At low speeds it reduces the chance of tip stall. Why do we do this?
At high speeds it reduces wing twist/flex. Airliners lock the outboard ailerons
at cruise for this reason.
The UV6 Tail (6 tail control surfaces) is a unique design to take advantage of a safety
back-up. It has a conventional Horizontal Stabilizer with two Vertical Stabilizers in an upside-down "U" with Two Tailerons on the Horizontal (Elevators that combine with
Aileron during a roll) located on each side of the fuselage and are driven with separate control actuators. (most GA and Experimental aircraft have them connected together and have a single bell-crank or control arm) The Vertical Stabilizers have counter-balanced Rudders with tailwheels on the bottom for steering control.
The Tailerons give redundancy to the Ruddervators, plus the ability to reduce a bit of
rolling resistance by splitting the roll from only the wing to sharing a small portion
with the axis of the plane during a roll. There are 60 degree "V" tail ruddervators 20" tall.
(aka: stabilators or all-moving control surfaces)
All-moving surfaces have twice the control effectiveness and provides better
performance at low air speeds. These are located on the top portion of the tail
above the Horizontal. Each one is driven by a separate actuator control.
This was designed to add redundancy as well as provide good
low speed (power on) handling and taxi control authority.
With computer control the Rudders can be mixed in during a roll or
bank to correct for adverse Yaw. Also control the pitching effect when
flaps are lowered can be corrected automatically with Elevator trim.
When the ground speed is below 15 MPH for better taxi control,
the rudders gain more degrees of movement for steering.
There is an easy way to slow the aircraft down! For a rapid descent
and/or approach or for reducing runway roll-out, by lowering
the flaperons and raising the spoilerons with a preset switch.
The Throttle actuator also features dual 28 volt power and signal feeds,
it has built it self testing too. It can return not only the shaft position info
in digital format, but several diagnostic data streams such as the level of the
supply voltage, current consumption and the temperature of the electronics
inside the case. These kinds of diagnostic capabilities help to determine
the health state of the actuators before, during, and after flights.
Another safety feature is the ability to manually or automatically disconnect from the main computers and go to Direct Law control. This is needed for Flight Testing and Emergency operation if any of the computers were to fail. Another feature is a small joystick with a twist control knob on top. This is always on Direct Law and controls all Roll actuators, all surfaces acting for Pitch, and twist motion for all Yaw controls. This joystick is easily detachable from the cockpit and has a cord that can reach all parts of the aircraft. Testing full range of motion, torque or load applied to the surface, inspect in and around for full function on every surface on the aircraft including the engine compartment. A switch can be selected to toggle from the aileron, elevator, and rudder to check flaps, throttle, and mixture.
The fully redundant actuators were developed for applications with highest
reliability demands. The redundant – two channel – design of the actuator allows continuous operation even if one of the two channels has failed. All major components such as the electric motors, control and communication electronics, and power supply are available twice (redundant). The position sensor features a three channel design (for 2 out of 3 voting). All major components of the actuator are continuously diagnosed by the micro controllers of the actuator and its health status can be read via the redundant interface.
If a single Ailerons fails, 5 others remain. If a single Taileron or Ruddervator fails then 3 remain. If a single Rudder fails then 1 Rudder and 2 Ruddervators (acting as Rudders) remain. All of the actuators operate on redundant battery power so they
are not dependent on the engine running or alternator power.
The only mechanical linkage/controls are between the Actuator and the control arm
for the surface. Throttle and Mixture also have local Actuators with minimal linkage.
Control pedals for the Rudder are Hall-Effect with no mechanical linkage/cables.
Conventional hydraulic braking is controlled by tipping the tops of the pedals.
If you watch most modern military jets take-off and land you will notice that all control surfaces can and do move independently, like the F1 Eagle! First of its kind!
"If you build it, they will fly it!"
After the Reno Air Races in September 2002 we started doing research, compiling information and data of what is needed to make a Gold Class High Performance Aircraft. Pouring over and over the International Formula One rules, analyzing all of the top aircraft in person and from pictures as well as race data. I talked with race pilots and crew chiefs in almost all classes, (sorry, I didn't get a chance to talk with the Jet Class guys) and primarily consulting with a one of the world’s foremost airplane designers, Aeronautical Designer and Engineer, Martin Hollmann. Designing and redesigning, adding and subtracting components and features, I believe we have come up with the best possible result!
The F1 Eagle Aircraft!
Getting it from paper and CAD design will take a lot of work.
We are excited to start the building process very soon
and look forward to flight testing. Our goal is to be
in the air by the end of 2021 and racing in 2022.
Safety is number one and ranks highest in all aspects of the build!
Cockpit layout shows seat belt and pilot position, room for a backpack style parachute too!
My love of airplanes started when I was 10, it was a control line Cessna airplane with a Cox .049 engine. I was hooked!
I have flown and raced R/C (Radio Controlled) aircraft and gliders, as well as helicopters, boats, cars, trucks, and yes, even a 1/8th scale tank.
Also helped bring Real-Time
Telemetry into Air Racing in 2003
The original Telemetry unit had GPS track, and 4 inputs (Airspeed, Altitude, Oil Temp and Air Temp) the following year had GPS track, and 8 inputs, it's history from there...
Now, some of the teams utilize
almost 50 points of monitoring,
Wow, still amazes me to this day!
Getting to be on the racing side of the Air Races is quite a great sensation! I got the opportunity to have casual conversations with many racing legends including
Hoot Gibson (Naval Officer, Aviator, Test Pilot, ATP, Space Shuttle Commander and Astronaut, (retired) and Aeronautical Engineer), Bob Hoover, Lyle Shelton,
Darryl Greenamyer and
Jon Sharp, 15 Reno Air Racing National Championships with International Formula One and Sport Class in
Nemesis and Nemesis NXT .
I asked Jon what few things make a race plane go fast... He replied "It's not a few big things but 25 little things! And when you make a change to one, many times it affects several others"
I have also attended the Reno Pylon Racing Seminar 3 race years and have put over 50 laps on the race course.
One can never get enough flying, practice and testing time, when flying a race plane you need to be not just one step ahead of the plane but 2 or 3!
For Racing and Flight Testing, Emergencies are something you
prepare for before "Every" flight.
If you have to pull out a checklist
or check a sheet on a knee board...
especially at 250+ MPH, 50 feet off the deck, things happen very quickly...