CarterCopter's Role in Fulfilling NASA's 10 Enabling of Technology Goals
March 24, 1999
1. Reduce the aircraft accident rate
by a factor of five within 10 years, and by a factor of 10 within 20 years.
The CC will be one of the safest aircraft
ever built. CC's Safety features consist of the following:
A. In helicopters, there is a "dead
man zone" wherein there is not enough altitude or airspeed for the
helicopter to autorotate and cushion the landing in case of engine failure.
In autogyros including the CarterCopter, there is no dead man zone, because
the rotor is always in autorotation and sufficient energy is stored in
the CC rotor to provide slow controlled descent in case of engine failure.
B. The high-inertia rotor of the CarterCopter
provides a large amount of kinetic energy which can be useful in various
emergency situations. With a dead engine there is enough stored energy
in the rotor to hover for 5 seconds at 3000 pounds gross weight, or to
touch down and immediately pull collective and jump 20 feet in the air
and accelerate to 40 MPH while before establishing a glide path for a
second landing.
C. Vertical landing ability allows emergency
landings almost anywhere, in case of mechanical failure or deteriorating
weather. Even emergency landings on water are possible. Water takeoff
without floats is not possible with the current design because the prop
will hit the water.
D. The center of thrust is through the C.G.
of the CarterCopter, so that in a high thrust, zero "G" condition,
the aircraft cannot do a forward snap roll, a hazard in some autogyros
known as "bunting-over".
E. The CarterCopter will fly level at about
30 MPH. A gyroplane has no stall speed, but at speeds slower than 30 MPH,
the aircraft will begin to sink even at full throttle due to the massive
drag of the rotor at high angles of attack. However, at high angles of
attack the rotor will also speed up, providing a reserve of kinetic energy
that can be used to cushion descent before contacting the ground.
F. The aircraft is very maneuverable in both
pitch and roll at low speeds, due to the high control power of the rotor.
G. The large horizontal tail volume reduces
pilot induced oscillations and makes the aircraft very stable at high
speed or under gusty conditions.
H. The large vertical tail volume results
in very good weather-vaning characteristics which helps ensure that the
aircraft always lands into the wind without crabbing. Crabbed landings
can be dangerous in rotorcraft because the rotor is an omnidirectional
wing. A wind from the side can tip over a rotorcraft more easily than
it can tip over a fixed wing aircraft. In many gyroplanes, such an accident
leads to the rotor hitting the ground, breaking the mast and potentially
injuring the pilot. The CarterCopter mast is designed to break above the
fuselage so that the pilot & passengers can be protected by the sturdy
fuselage from any debris.
I. The landing gear on the CarterCopter is
capable of absorbing a 20 foot per second sink rate at gross weight without
damage to the aircraft or injury to the passengers. A 30 foot per second
sink rate would probably still not injure the passengers. (See landing
gear drop test pictures in the slide show located on our web site, "www.cartercopters.com").
The landing gear for military aircraft operated from aircraft carriers
are designed for a maximum 24 feet per second sink rate.
2. Reduce emissions of future aircraft
by a factor of three within 10 years, and by a factor of five within 20
years.
A. The CC will be designed to work with either
the TCM turbo-diesel engine or two Williams FTX Jet engines. These NASA
sponsored engines will feature reduced emissions.
B. The CC will have less parasitic drag than
other GA aircraft due to it combining a rotor for take-off/landing and
a long thin wing for high speed flight. Less parasitic drag coupled with
the high altitudes and high speeds at which the CC will fly -- permits
longer trips to be made quicker and with less fuel and emissions.
3. Reduce the perceived noise levels
of future aircraft by a factor of two from today's subsonic aircraft within
10 years, and by a factor of four within 20 years.
A. Zero-roll takeoffs/landings and a high
rate-of-climb will permit the CC to keep operational noises overtop of
cities and neighborhoods to a minimum. Its long range capability means
fewer takeoffs/landings when traveling long distances.
B. The Prop version CC is quieter than other
prop driven aircraft due to its patented, high-efficiency prop design.
C. By its very nature, a gyroplane with a
good muffler is much quieter than a helicopter. The CC operates at much
lower rotor tip speeds than a helicopter; reducing the rotor noise.
4. While maintaining safety, triple
the aviation system throughput, in all weather conditions, within 10 years.
A. The CC will fly above most weather and
above all congested airspace at its normal operating altitude of 45-55,000
feet.
B. The CC, with its high transit speeds,
long range and heavy payload capability, will permit more passenger miles
per aircraft over shorter time periods, and with less congestion in airport
traffic corridors.
C. The ability of the CC to operate from
front door to front door, will help keep additional aircraft, cars, and
passengers away from already crowded airports and terminals.
D. The CC versatility and low costs will
open new aviation markets not presently considered.
5. Reduce the cost of air travel
by 25% within 10 years, and by 50% within 20 years.
A. The CC uses no exotic construction techniques.
For the same cost of a high performance fixed-wing, the CC will offer
twice the speed and range at a much lower cost per passenger mile (mainly
due to its ability to fly at high altitudes). I t will also negate the
need for a car to get passengers to and from the airport.
B. The CC can replace 80% of helicopters
being flown today - at less than half the initial cost per aircraft and
with a dramatic reduction in maintenance expenses as compared to helicopters.
6. Reduce the travel time to the
Far East and Europe by 50 percent within 20 years, and do so at today's
subsonic ticket prices.
This goal is not applicable to a subsonic
aircraft like the CarterCopter or other rotorcraft.
7. Invigorate the general aviation
industry, delivering 10,000 aircraft annually within 10 years and 20,000
aircraft annually within 20 years.
A. The simple fact that this revolutionary
aircraft will have little competition -- will bring international aircraft
buyers to the U.S. seeking kits and certified aircraft. The CarterCopter's
low purchase price and low maintenance cost, combined with its zero-roll
takeoffs/landings and high performance capabilities -- will be an unbeatable
combination.
B. Many third world countries have long distances
between towns and have few suitable airstrips -- presenting the ideal
market situation for the CC.
C. The CC versatility and low costs will
open new aviation markets not presently considered.
8. Provide next-generation design
tools and experimental aircraft to increase design confidence, and cut
the development cycle time for aircraft in half.
A. The patented ideas which make the CC so
revolutionary, can be scaled upward to carry 100 people, or downward for
a small unmanned aerial vehicle. The weighted rotor and other design breakthroughs,
that make the CC revolutionary, will work regardless of aircraft size.
B. The software program developed to model
and project CC performances will make the design of numerous CC design
variations much easier.
9./10. These goals have to do with
reducing the payload cost to low-Earth orbit and therefore are not applicable
to the CC or other rotorcraft.
|