1. sports
2. climbing

JINKER
Jump-induced Kinetik Energy Rebounder
by Nikolaus Pietrek
DESCRIPTION OF THE KEY POINT ASPECTS OF THE INVENTION
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JINKER with unilateral fuselage, perspective
5: Flexible frame with fixed, downwards-curved wings
6: Control handles for rudders and rear elevator wing
7: Pilot´s pedestal
8: Rear elevator wing
The invention is a light, portable flight apparatus with a fuselage, a
flexible frame and downwards-curved fixed wings.
The Jinker is started from an elevated place like a ramp or a hill. The
pilot runs towards the wind until the ornithopter is carried by the
airflow. He then jumps from behind onto the frame, which is open in
the rear and he starts to glide first.
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After that, the pilot initiates the flapping of the wings by gently
jumping on the plane and slowly and rhythmically increasing the
body acceleration and frequency.
„Snowbird“ Ornithopter September 2010
Traditionally, wings of aeroplanes are constructed in a straight
manner. Under the load of the weight of the pilot and the plane itself,
the wings tend to bend upwards. This makes the wings less efficient
because of the reduced projected area and the slope of the wings.
With the flexible pre-bent, fixed-wing-construction of my invention,
the contrary is achieved: The wings tend to stretch under the load
and therefore they become more efficient. The degree of stretching
is directly dependent on the amount of load.
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The power for the flapping of the wings being made available by the
pilot by jumping (Body weight acceleration), he constantly changes
the degree of stretching, thus inducing the flapping.
1: 2 - 3g load (Maximum body weight acceleration of the jumping pilot)
2: 1g load (Weight of the pilot + plane. Gliding flight)
3: Zero g load. Rest position
4: Wing slightly overbent after flapping
The key of this way of power input is the positive energy balance
of the process: The energy needed for one pilot´s jump is about 2-3
fold the pilot´s body weight. Because the wings are stretched during
the power input, the counter-bearing against his jump is raised
gradually, the jump becomes more efficient and the loss of altitude is
minimized. When the jumping movement is finished, the weight of
the pilot does not last on the plane any more. Now the plane
incorporates a manifold of the energy needed for a flight with or
without the pilot as tension in its wings. The energy is now
automatically released from the wings and frame by a flapping
motion (As a result of the energy release) and is used either for
acceleration or gaining of height of the (now) “singular ballistic body
ornithopter”.
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On the following pages the process of energy input during one
flapping cycle is described stepwise and simplified:
Please note the position of the rear elevator wing.
Gliding
MODUS:
The pilot gets ready for the jump
Climb Flight
Rear elevator wing and lateral rudder in neutral position
Elevator wing
Wingspar
Fig. 3.1
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Lateral rudder
Phase of maximum body weight acceleration
MODUS:
Pilot provides maximal energy into the system
Climb Flight
Wings have maximum tension
Fig. 3.2
End of body weight acceleration
MODUS:
Rear elevator wing positioned for climbing
Climb Flight
Wings start to release energy
Lateral rudders show downwards, assisting the flapping
motion
Fig. 3.3
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Pilot flies upwards due to his jump and briefly loses
contact to the plane
MODUS:
Climb Flight
Rear elevator wing in neutral position
The „singular ballistic body“ plane follows the „singular
ballistic body“ pilot and transforms the released energy
into gaining height
Lateral rudders show downwards, assisting the flapping
motion
Fig. 3.4
The jump of the pilot ends in a parabolic flight
MODUS:
The pilot contracts his legs in order to not inhibit the
climbing of the plane
Climb Flight
Fig. 3.5
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The plane is forced into gliding with the rear elevator wing
MODUS:
The pilot continues to contract his legs and biomechanically
prepares for the next jump
Climb Flight
The lateral rudder is put back into neutral
Fig. 3.6
Gliding
MODUS:
The pilot gets ready for the jump
Climb Flight
Rear elevator wing and lateral rudder in neutral position
Fig. 3.7
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A similar principle is successfully applied to operate the “AquaSkipper”
device below …
The most simple and appropriate way to describe my invention would be
that of a „Wing-Shaped, Flying Trampoline“.
The pilot´s aim as energy-deliverer and markedly heavier one of both
ballistic bodies has to be to have the Jinker accompanying him during
the flight, similar to the role of the torso of a bird, to use the ornithopter
as trampoline and to jump from pressure point to pressure point.
Comparable ballistic momentums can be observed during the
performance of the „Akrobat Bikers“ from Ukraine, who do somersaults
with their relatively light tyre – hoses.
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It is the duty of the pilot, to harmonize and to conduct the predescribed process with the pertinent bionical, flight-dynamic and
ballistic momentums and characteristics in order to achieve the climb
flight with flapping wings.
Of course, the above described process to conduct a flight with this
ornithopter is only related to one single flight modus. The
requirements for a sustained and controlled flight from A to B are
manifold and are thoroughly described in the pertinent patent
DE102007060176.
In a distinct Proof of Concept, calculations reveal very promising
performances under different conditions and with different lay-outs in
terms of wingspans, weights and speeds.
I pursue the aim of establishing the Jinker as a sports equipment for
a new olympic discipline.
For this puspose, to win the “Kremer Prize Sports”, called out 70
years ago under the wing of the Royal aeronautic Society in the UK
could be a perfect platform. One basic aim of the sponsor of this
prize was to establish a popular, man-powered flight sports for
olympic contests.
I consider the use of the Jinker for private purposes, without the
embedment into flight clubs with tight training methods and well
organized structures as being too dangerous and I therefore will
refrain from releasing it to the public.
In the environment of a sports competition, the Jinker offers ideal
possibilities for advertisements due to the huge surfaces of the
wings and fuselage.
Rallyes, short track races or skill competitions can be envisioned, all
to be performed either in nature or big open stades. The new sport
discipline could be structured in classes and ligues and different
cups can be called out.
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Oportunities for partners
1: The first successful flight of the Jinker will be an unprecedented
and unrepeatable event which will set undeletable footprints in the
history of aeronautics and which will anchor all partners very
prominently in the history books! This is a true prestige project.
2: This is a unique opportunity to elaborate and to establish new
sports disciplines, to market it, to set up its rules and to develop new
techniques and equipment!
3: After the predictable and lucrative “hype” with uncountable klicks
on the web, the created and sustained values will be: Licenses for
the manufacturing, fees for the participation on the competitions, TVrights, fees for advertising, cooperations with fashion labels,
licensing to scale model manufacturers, to name a few!
I would be extraordinarily delighted if I could inspire you with this
unique project!
Nikolaus Pietrek
Drosselstrasse 34
14612 Falkensee
Tel.: 0049 172 3242291
Email: [email protected]
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