GB2608209A

GB2608209A - Radio receiver fitted onto an energy absorbing device adapted for the parachute of aircraft and unmanned

Info

Publication number: GB2608209A
Application number: GB2118755.4A
Authority: GB
Inventors: Pavlos Giannakopoulos
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-02
Filing date: 2021-11-11
Publication date: 2022-12-28
Also published as: CN114572404A

Abstract

An aircraft (fig.10,70) has a radio remote controlled energy absorbing device 10 connected to the main riser strap (fig.10,52) of a parachute (fig.12,50). The energy absorbing device has a strap 11 folded in half lengthwise and sewn with lengthwise stitches 14. A first coupling 30 is connected to a 3-ring release system 60, containing a smaller ring (fig.7,63), a mid-size ring (fig.7,62), and a larger ring (fig.7,61), and to a carabiner (fig.10,51) at the end of the parachutes main riser strap, a lower end of the energy absorbing device is connected to a second coupling 40 to carabiner (fig.10,53) at the end of suspension straps (fig.10,54,55,56). A case 101 contains a radio receiver 100, at least one battery (fig.3,110), a telescopic antenna (fig.3,105) and a circuit board (fig.3,115) with a servo (fig.3,120) and a motor (fig.3,130) rotating bobbin (fig.3,132) to pull thread 125, pulling a retaining pin 65 of the 3-ring release system; during approach of the aircraft towards the ground, the first coupling is unlocked and released along with the larger ring, causing tearing of the stitches applying a counterforce to the weight of the aircraft and decelerating the fall, reducing the ground impact speed.

Description

DESCRIPTION

RADIO RECEIVER FITTED ONTO AN ENERGY ABSORBING DEVICE ADAPTED FOR 5 THE PARACHUTE OF AIRCRAFT AND UNMANNED

THE FIELD OF THE ART

The present invention relates to the field of the, art of a parachute wherein the Radio controlled energy absorbing device equipped with a Radio receiver device is inserted and connected between the main riser strap of the parachute and the suspension straps of the Aircraft, unmanned UCAV-UAV, and Drones, and when the Radio receiver picks up Radio control signals from a remote transmitter during an emergency, it directs them to the mini-motor thereof and The axle thereof rotates and, at the same time, exerts a pulling force by means of the sPecial bobbin thereof on the thread connected to the retaining pin and releases said pin from the 3 ring release system of the Radio controlled energy absorbing device.

As a result, the rapid activation of the device occurs by means of a remote Radio signal, followed by a mild impact of the aircraft on the Earth.

THE BACKGROUND OF THE INVENTION

The use of energy absorbing devices for Aircraft and unmanned UCAV-Aerial targets, UAVs, Drones equipped with a parachute have become known from PCT International Publication Number WO 2020/089660 Al and the present description is an improvement of the above PCT and consists an inventive step with the Radio receiver connected to the strap of the energy absorbing device.

The Radio receiver is encased in a small rectangular box case fitted on the strap of the Radio controlled energy absorbing device which is thereafter connected between the main riser strap of the parachute and the suspension straps of the aircraft, helicopter, and unmanned UCAV-Aerial target, UAV, and Multicopter-Drone.

The object of the invention encompasses manned aircraft, helicopters, UCAV-Aerial targets, UAVs, and Multicopters-Drones.

An Unmanned Aeronautical Vehicle -UCAV-UAV is a flying device that does not transport a person and which has been developed and used for scientific, research or military purposes.

For clarification purposes, the unmanned fighter aircraft (UCAV) mentioned in the following description-claims shall include Aerial targets, while UAVs refer to unmanned military and civil aircraft.

For manned military and civil aircraft and helicopters equipped with a parachute, each will be assigned the appropriate band of the electromagnetic spectrum for communication, and different frequency band(s) for UCAV, UAV, Multicopters-Drones.

The radio controlled (RC) energy absorbing device comprises a strap of predefined length wherein at least one portion of the strap is folded to half its original length and the two resulting half lengths of the strap are sewn together with a plurality of transverse stitches, and the energy absorbing device is thereafter connected between the main riser strap of the parachute and the suspension straps of the aircraft and unmanned UCAV, UAV, Drone whereby the tearing of the above-mentioned plurality of transverse stitches on the folded and sewn portion of the strap takes place following activation of the above-mentioned RC energy absorbing device at a specified moment during the aircraft's approach of the, ground at a height of approximately 7-8m, and as a result of said tearing, a counterforce to the weight of the aircraft and unmanned aerial vehicles is exerted thereby decelerating the fall and the impact speed thereof onto the ground.

The combination of the proposed Radio controlled energy absorbing device appropriate for advantageous adaptation onto the main riser strap of a parachute with a release system that initiates operation thereof, such release system being the known rapidly operating 3-ring release system for parachutes, wherein the aforementioned 3-ring release system is used in combination with the RC energy absorbing device of the invention appropriately oriented with the small and middle ring thereof fixedly connected to the folded strap portion of the device and with the third large ring connected to the first coupling member so as to follow the movement of the latter upon activation of the energy absorbing device.

Equipping the proposed RC energy absorbing device with the rapidly operating 3-ring release system provides the appropriate means for the operation of the 3-ring release system and the activation of the energy absorbing device, namely the retaining pin.

The motor of the Radio receiver device pulls on the thread connected to the retaining pin and releases said pin from the 3-ring release system fitted onto the energy absorbing 30 device.

Activation in the case of an emergency takes place electromechanically and is initiated by the pilot on the manned aircraft or UCAV, UAV, Drone remote pilot who visually observes the approach thereof of the ground and, using the Radio transmitter, he causes the activation of the RC energy absorbing device connected onto the main strap of the parachute at a height of a few meters from the ground resulting in the absorption of energy and the reduction of the impact force onto the ground.

There are two aspects in the description of a transmitter which sends an electromagnetic signal remotely to the Radio receiver fitted onto the RC energy absorbing device for the release of the of the retaining pin and activation of said device, namely the theoretical aspect wherein a short explanation is given of the of the basic characteristics for the transfer of the signal from transmitter to receiver, and the practical aspect with the analysis and selection of pads that are suitable for use for the implementation of the RC energy absorbing device.

In short, the theoretical background of the RC energy absorbing device adapted for remote activation thereof relates to the field of Telecommunications whilst the practical 10 aspect is realized by applying the field of Electronics to the transmission of electromagnetic signals.

The result of this is the combination of the two said fields for the manufacture of the Radio receiver fitted onto the energy absorbing device which is beneficial for avoiding damage to aircraft, UCAV, UAV, Drones during impact and for safeguarding people.

The type of communication employed is two-way communication wherein the transmitter may function as a receiver at the same time while the receiver may function as a transmitter respectively, but it may also be one-way communication comprising one transmitter and one or more receiver(s). In such wireless communication, information is transmitted via electromagnetic waves as in the case of radio broadcasting or radars.

The antenna of the Radio receiver is of telescopic type and extends automatically the moment the parachute begins to extend for greater range. This is achieved by means of a thread wherein one end thereof is connected to the top of the antenna and the other end thereof is connected to the main riser strap at a predefined distance, and when the strap extends it pulls on the thread thereby extending the antenna.

The signal may be defined as the electrical signal transmitted by the transmitter and received by the receiver after undergoing specific processing. The electrical signal is an electrical value received by the receiver after the processing thereof and represents the initial message sent by the transmitter. The receiver, in turn, is equipped with a reception system wherein the electrical signal shall undergo processing anew so that the receiver ultimately receives the initial electrical signal transmitted by the transmitter. The transmitter directs/delivers the signal/information via some device, which in this case is the micro-motor thereof bearing a special bobbin adapted for pulling on the thread connected to the retaining pin which releases the 3-ring release system and activates the energy absorbing device. More specifically, the configuration of the micro-motor effectuates the result, given that the axle thereof comprises two disks forming a wide opening peripherally for the immediate winding of the thread connected to the retaining pin and, also, close to the two disks there is the guide for the immediate winding of the thread connected to the retaining pin.

With the radio receiver, the energy absorbing device is rendered autonomous and independent with regard to the pulling of the retaining pin thereof which takes place remotely upon activation initiated by the pilot, in conjunction with the components fitted onto it such as the antenna -receiver -battery -micro-motor, etc. The Radio receiver is fixed onto the already known energy absorbing device and comprises a small rectangular box/case encasing the antenna -battery -circuit board fitted with the micro-Motor, as well as other small electronic components.

A portion of the internal electronic components of the Radio receiver device which shall be used for the manufacture of the receiver board (for the processing of the electrical signal) shall be placed on an internal base/board (PCB) whereon the circuit shall be etched from layers of copper and configured so as to connect all components on the board. The manufacture of the receiver circuit board is of medium size and varies in dimensions at approximately 30x20 mm (the contents and electrical wiring thereof).

Additionally, the radio transmitter device intended for sending the radio signal also comprises a small case which varies in dimensions, and said transmitter shall be used at a radio frequency used for the whole region of the electromagnetic spectrum from the beginning thereof to the range of (100000-0,001m).

The manufacture of the portable Transmitter circuit board is independent, autonomous, of medium size and varies at approximately 24x20 mm (the contents and electrical wiring thereof) regardless of the size of the accessories (such as a portable or tablet computer, etc.), or said circuit board may have been integrated into the console of the ground control station for UAV, UCAV, Aerial target, Drone.

The RC energy absorbing device is activated remotely by the operator on the ground using a portable radio transmitter comprising a portable computer or by a ground or marine control station for UCAV, UAV, Drone which is capable of two-way communication and provides the facilities for human control of unmanned aerial vehicles (UCAV, UAV, Drone) equipped with a a parachute.

The transmitter on the ground communicates with the receiver fitted onto the energy absorbing device like a typical radio communication system using the appropriate frequency range, e.g. 27Mhz or 2,4Ghz or 3Hz-300GHz or another, and then the receiver sends the electrical signal to the servo which activates the motor based on the signal sent by the transmitter.

The RC energy absorbing device adapted for civil Aircraft and Helicopters equipped with a parachute shall be activated by the pilot within the cockpit by means of a small, portable radio transmitter even at a short distance from the parachute strap, and the type of communication that is applied with the small radio transmitter is one-way communication, in which case the radio transmitter is operated by the press of a button.

The excessive descent speed of aircraft and UCAV, UAV, Drones has been pinpointed 5 and confirmed as a basic factor in the injury to people upon impact onto the ground, as well as their demise.

It is known that the majority of injuries and even deaths of passengers of aircraft equipped with a parachute are closely related to the impact phase thereof onto the ground.

It should herein be noted that the activation of the energy absorbing device must be executed as close to the ground as possible at a height of approximately 7-9m, so that the parachute speed is drastically reduced to a rate of descent of 5 ft/sec affecting Aircraft, UCAV-UAV, Multicopter-Drone. Thereafter the speed starts to increase but they will have already landed so that they hit the ground at a rate of descent of 5-6 ft/sec.

It should herein be noted that depending on the size of the aircraft, unmanned UCAV-UAV or Drone, the energy absorbing device and Radio receiver shall also be of respective size for improved signal transmission range, which also applies to the compounds thereof, namely the antenna, servo, battery, motor, etc., as well as to the radio transmitter which shall also be or respective size.

More specifically, in smaller drones, UAVs the-receiver fitted onto the energy absorbing device shall consist respectively of mini-sized components measuring a few millimeters and the weight thereof shall be a few grams, likewise the energy absorbing device shall be of respective size therefore the indicative designs vary accordingly depending on the size of each aircraft, UCAV, UAV, Multicopter, Drone.

However, in larger Aircraft, etc., both the Receiver and the energy absorbing device shall 25 be larger and they too shall comprise components of a larger size.

Additionally, the energy absorbing device varies in manufacture depending on the energy being absorbed, which is measured in kN, resulting from the weight of the aircraft, UCAV, UAV, Multicopter, Drone.

The transmitter and receiver of the RC system comprise additional electronic components, etc., for a fully automatic operation and activation of the device.

It therefore consists a main objective of the present invention to propose the embodiment of the proposed Radio receiver of the energy absorbing device, which can be activated remotely at a specific moment during the approach of the ground at a height of a few meters, for the dampening of the force exerted onto a main suspension strap of the parachute of an aircraft and unmanned aircraft (UCAV, UAV, Multicopters, Drones) prior to impact thereof on the ground, and for safeguarding people.

It consists an additional object of the present invention suitable for advantageous adaptation of the radio receiver device equipped with a retaining pin release and activation system fitted onto an energy absorbing device.

BRIEF DESCRIPTION OF THE DRAWINGS

With reference to the accompanying drawings we will hereinafter describe illustrative preferred embodiments of the invention.

Figure (1) presents in perspective view the folded strap of the energy absorbing device prior to activation thereof, equipped with the radio transmitter in the small rectangular box/case.

Figure (2) presents in perspective view an explanation of the retaining pin from Figure (1) inside a circle.

Figure (3) presents in perspective view the small box-case of the radio transmitter comprising the antenna -battery -receiver -servo -motor.

Figure (3A) presents in perspective view the lid of the radio receiver device.

Figure (4) presents in perspective view the motor of the radio receiver with the 20 components thereof.

Figures (5, 6) present in perspective view the extended strap of the energy absorbing device prior to and following activation thereof, equipped with the radio receiver in the box/case.

Figures (7, 8, 9) present in perspective view the metal components of the RC energy 25 absorbing device.

Figures (10, 11, 12, 13) present the energy absorbing device interposed between the main parachute strap and the suspension straps of a passenger aircraft prior to and following activation thereof, whilst Figures (10, 11) present the small portable transmitter adapted for one-way communication.

Figures (14, 15, 16, 17) present in perspective view the control process of the two-way communication between the ground station transmitter and the receiver of an unmanned Aerial target/UCAV, prior to and following activation of the radio receiver.

Figures (18, 19, 20, 21) present in perspective view the control process of the two-way communication between the ground station transmitter and the receiver of an unmanned aerial vehicle, prior to and following activation of the radio receiver.

Figures (22, 23, 24, 25) present in perspective view the control process of the two-way communication between the ground station transmitter and receiver of an unmanned Multicopter/Drone, prior to and following activation of the radio receiver.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

As a finished end product the RC energy absorbing device (10) of the invention, illustrated in Figure (1) prior to activation thereof, comprises,a radio receiver (100) encased in a small rectangular box/case (101) which comprises the components of the device, Figures (3, 4), and the lid (102) thereof in Figure (3A) with the opening for the OFF/ON switch (103) and the power indicator light (104).

In Figure (3) the small box/case (101) of the radio receiver (100) is depicted equipped with the automatically extending antenna (105) for the reception of the signal emitted by the portable transmitter (141) or ground control station (140), and comprising the connected battery(-ies) (110), the receiver circuit board (115) with the servo (120) for the (tubular) motor (130).

In Figure (4), the axle (131) of the Motor (130) is equipped with a micro-bobbin (132) comprising two disks (133), (134) forming a wider opening peripherally for the immediate winding of the thread (125), Figure (3), and also close to the opening formed by the two disks (133), (134) is the guide (135), Figure (3), for the thread (125) which enables the immediate winding of the thread (125) connected to the retaining pin (65) and eliminates the possibility of malfunction or blockage.

The (tubular) motor (130) that exerts the pulling force on the retaining pin (65) required for the extraction thereof is preferable to any other servomechanism due to the greater retraction and winding length of the thread/yarn (125). Also the (tubular) motor (130) has a small diameter thereby facilitating the mounting thereof with regard to the width of the space reserved for the mounting of said motor (130), and the axle (131) thereof (Figure 4) rotates while simultaneously pulling on the thread (125) connected to it and said thread (125) is connected at the other end thereof to the retaining pin (65) thereby extracting said pin (65) from the rapidly released 3 ring release system (60), Figures (1, 2).

Figures (1, 3) present in perspective view the telescopic antenna (105) of the Radio receiver (100) which extends automatically the moment the parachute (50) begins to extend for greater range. This is achieved with a yarn/thread (106) wherein one end thereof is connected to the tip of the antenna (105) and the other end of the thread (106) is connected to the main strap (52) of the parachute (50) at a predefined antenna (105) extension length, and when the strap (52) is extended it pulls the thread thereby extending the antenna (105).

The Radio controlled energy absorbing device (10), Figures (1,5,6), comprises a strap (11) of a predetermined length which is defined by a pair of parallel, longer sides (1a, 1b) of equal length that are vertically oriented during operation of the device, and by a pair of parallel shorter sides (1c, 1d) of equal length, which are horizontally oriented during operation of the device. In correspondence with the above definition, the length of the device (10) is defined to mean the length of the sides (la) and (lb) and the width of the device is defined to mean the length of the sides (1c) and (1d). A selected portion of the strap (11) is folded into half the original length thereof and the two resulting halves (11a, 11 b) of the strap are being sewed with a plurality of transverse stitches (14). One end of the strap (11) of the energy absorbing device (10) is connected by means of a first coupling member (30), Figure (10), to the end carabiner (51) provided at the end of a main riser strap (52) of the parachute (50), and the other end of the above-mentioned strap (11) of the energy absorbing device (10) is connected by means of a second coupling member (40), Figure (10), to the corresponding end carabiner (53) at the end of the respective main suspension straps (54, 55, 56) for the elevation of the aircraft (70).

The first above-mentioned coupling element (30), Figures (1, 5, 6, 7, 8) is a strong plate with a generally rectangular shape at one end thereof and a width corresponding to the width of the strap (11) being proviced with an arm (33) at one end thereof wherein a 3-ring release system (60) is connected and a suspension D-ring (31) at the other end thereof is connected to the above-mentioned end carabiner (51) provided at the end of the main riser strap (52) of the parachute 50. It also comprises a further transverse arm (32) which extends parallel to the above-mentioned arm (33) roughly in the middle of the plate (30), wherein strap (11) is adapted to either pass through or be fixedly connected to this transverse arm (32). As shown in the Figures an opening (34) is formed between the arm (33) and the arm (32) and another opening (35) is formed between the arm (32) and the upper surface of the edge of the ring (31).

The other above mentioned second coupling member (40) is a strong sheet metal forming a ring (45) with a linear arm (41) at the other end thereof, Figures (1, 5, 6, 9).

It also comprises an additional transverse arm (46) extending parallel to the arm (41) 30 approximately in the middle of sheet metal (40) and an opening (47) is created between the arm (41) and the arm (46), and an opening (48) is created between the arm (46) and the suspension D-ring (45).

The lower end of strap (11) is connected to the coupling member (40) with the edge (1d) thereof passing through the opening (47) and thereafter being folded to create a loop opening (16), which encloses the linear arm (41) of the coupling member, thereafter the end of the edge (1d) of the strap abutting and securely sewed along line (17) of strap (11) with a sewing thread (37). Thus the linear arm (41) is trapped within the above mentioned loop (16) of the strap, whereby said coupling member (40) can no longer be extracted therefrom obstructed by the transversely extending linear arm (41), which extends across the width of strap (11) that surrounds it, Figures (1, 5, 6, 9).

According to a preferred embodiment of the invention, the element used for holding the RC energy absorbing device (10) under tension and for initiating its activation when needed is a 3-ring release system (60) which, as shown in Figures (1, 2, 5, 6, 7), consists of three serially engaged rings, i.e. a small ring (63), a medium-sized ring (62) and a larger ring (61). A similar such 3-ring release system (60) is known as a worldwide used parachute component by sport parachutists and military parachutists to connect a riser strap of the parachute with the strap bearing the parachutist. This 3-ring release system outperforms other unlocking methods due to the fact that it allows a parachutist to quickly cut off with a single motion the main parachute in case of a malfunction and initiate deployment of a reserve parachute.

The large ring (61) of the 3-ring release system (60) used in the present invention, Figures (1, 2, 5, 6, 7) is surrounded by a strap strip or piece of fabric (25) which encloses the ring (61) on the one hand and the lower arm (33) of the above-mentioned first coupling member (30) on the other hand. In this way, the ring (61) is arranged to follow the movement of the first coupling member (30) if and when it is being disconnected from the remaining assembly of the other two rings (62), (63), which are mutually engaged and wherein the middle ring (62) is securely bound by a strap strip (66) onto the strap (11) and the small ring (63) is securely bound by a strap strip (67) onto the strap (11).

Finally, a small strap strip is attached which creates a loop (64) enclosing the small ring (63), such strap strip being locked with a retaining pin (65), Figures (1, 2, 5, 6, 7), which passes through the same. With this arrangement the small ring (63) can easily be released from the retaining loop (64) when a slight pulling action is exerted on the retaining pin (65), such pulling action causing the immediate collapse of the mutually engaged rings (62, 63), the release of the large bottom ring (61) and the activation of the first coupling member (30) that is fixedly bound to it by means of the aforementioned arm (33), Figure (6).

The upward motion of the coupling member (30) following its release from the 3-ring retaining and release system (60) that is subject to the traction exerted therein by the riser strap (52) of the parachute (50), results in the activation of the energy absorbing device*(10) of the invention and the tearing of the stitches (14) through which the strap portions (11a, 11b) of the selected portion of the strap (11) that is being folded in two halves of the original length are bound together, thereby a counter-force to the weight of the aircraft (70) being exerted, such counter-force effecting smoothening of descent and landing thereof on the ground, as the fall and the eventual speed of impact of the aircraft (70), helicopter (71), and UCAV (88), UAV (86), and Multicopters-Drones (170) on the ground (82) is reduced and the otherwise encountered adverse effects of the impact are minimized.

As shown in Figures (1), (5), (6) the above-mentioned selected portion of the strap (11) which is folded longitudinally in half the original length thereof thereby creating two abutting half strap portions (11a, 1 b) is the total of the length of the strap which extends from one end (lc) to the other end (1d) of the strap (11).

As shown in Figures (1, 5, 6, 7) the strap (11), following the fastening of the end (1d) thereof within the second coupling member (40), passes through the opening (34) of the coupling member (30) and at this point the two portions (11a, 11b) of the strap are separated to form an opening (12), which surrounds the transverse arm (32) of the coupling member (30), thereafter being stapled with a plurality of lengthwise stitches (14) along its residual length, which according to a preferred embodiment of the invention is being wound folded up. In this case when a force exceeding a predetermined value is exerted onto the movable coupling member (30) and the 3-ring release system (60) is unlocked, the arm (32) executes the tearing of the predefined lengthwise stitches (14) and separates the two abutting sewed portions (11a) and (11 b) of the strap from a point (15) located downstream the 3-ring release system (60) up to the end of the strap, thereby ensuring the absorption of the energy exhibited as a result of the abruptly acting force that is exerted by the end of the main riser strap (52) of the parachute (50) upon activation of the energy absorbing device (10). As graphically depicted in the Figures, the RC energy absorbing device (10) of the invention maintains, in this case, exactly the same length before and after the tearing of the predetermined portion of the strap (11).

Additionally, the RC energy absorbing device (10) is activated by means of the signal sent by the transmitter (141) or (140) and, after said signal has been processed, it is transferred wirelessly and remotely via an antenna to the receiver (100) thereof by means of an electromagnetic wave (141a) or (140a), but there need to be the following: 1). Portable transmitter (141) for passenger aircraft (70) and helicopters (71) employing one-way communication.

2). Marine or ground control station (GCS) equipped with the facilities for human control of UCAV-Aerial target (88), UAV (86) and Drone (170) employing two-way communication wherein the transmitter may also function as a receiver at the same time and the receiver 35 may function as a transmitter respectively.

Below are described embodiments of the RC energy absorbing device (10) on the main riser strap (52) of the parachute (50) for a passenger aircraft (70), helicopter (71) and UCAV (88), UAV (86), Multicopter-Drone (170).

1. Passenger Aircraft (70), and Helicopter (71).

Figures (10, 12, 13) present the energy absorbing device (10) with the Radio receiver (100) before and after activation thereof, said energy absorbing device (10) is connected to the strap (52) of the parachute (50) for passenger Aircraft (70), Helicopter (71), wherein the pilot is presented within the cockpit (Figure 10) holding the portable Radio transmitter (141) in his hand (Figure 11). The pilot is on standby and activates the Radio receiver (100) of the energy absorbing device (10) by means of an electromagnetic wave (141a) sent by the portable transmitter (141) employing one-way communication, and close to the ground (82) at a height of approximately 7-8m so that the speed of the parachute is drastically reduced. The upward motion of the coupling member (30) following its release from the 3 ring retaining and release system (60), Figures (6, 13), initiated by the pulling force exerted by the strap (52) of the parachute (50), results in the activation of the energy absorbing device (10) of the invention and the tearing of the stitches (14) thereby exerting a counterforce to the weight of the aircraft (70), helicopter (71), which achieves a smooth descent and landing on the ground.

More specifically, the extended strap (11) of the energy absorbing device (10) is presented in Figure (6) following the rapid activation thereof after the Antenna (105) has received a signal for the activation of the motor (130) by means of an electromagnetic wave (141a) and, at the same time, the thread (125) has pulled the retaining pin (65) thereby releasing it from the retaining loop (64) which has caused the immediate collapse of the rings (62, 63), the release of the large ring (61); and the activation of the first coupling member (30) that is fixedly attached to said large ring by means of the arm (33), said coupling member being released and rapidly acting on said energy absorbing device (10) causing activation thereof and the tearing of said plurality of transverse stitches (14), Figure (6), thereby decelerating the fall and the ultimate speed of impact thereof onto the ground (82).

2. UCAV/Unnrianned Aerial target (88).

Figures (14, 15, 16) present in perspective view the type of two-way communication between transmitter and receiver Wierein the transmitter (140), Figure (15), located at the ground or marine control station, provides the facilities and may function as a receiver at the same time enabling the human control of the UCAV-Aerial target (88) which provides the receiver and may also function as a transmitter respectively. In such wireless, two-way communication the information shall be sent via electromagnetic waves (140a), as in radio broadcasting or radars.

The electrical signal is transmitted by the transmitter (140) via an electromagnetic wave (140a) and after undergoing specific processing it is transferred wirelessly and remotely to the antenna (105) of the Radio receiver (100) of the energy absorbing device (10). Ultimately, the receiver (100) receives the initial electrical signal (140a) transmitted by the transmitter (140).

The extended strap (11) of the energy absorbing device (10) is presented in Figure (17) following the rapid activation thereof, after the antenna (105) thereof has received a signal (140a) for the activation of the motor (130) thereby causing the activation of the energy absorbing device (10) and the tearing of the plurality of stitches (14), Figure (6), resulting in the application of a counterforce to the force exerted by the weight of the UCAV-Aerial target (88), Figure (13), thereby decelerating the fall and the ultimate speed of impact thereof onto the ground (82).

3. Unmanned Aerial Vehicle (86).

Figures (18, 191 20) present the two-way communication between the transmitter and receiver, wherein the transmitter (140), Figure (15), at the ground or marine control station provides the facilities and may also function as a receiver at the same time thus enabling the human control of a UAV (86) which provides the receiver that may also function as a transmitter respectively. In this wireless, two-way communication the information shall be sent via electromagnetic waves (140a).

The extended strap (11) of the energy absorbing device (10) is presented in Figure (20) following the rapid activation thereof and the tearing of said plurality of stitches (14), Figure (6), and the application of a counterforce to the force exerted by the weight of the UAV (86), Figure (18), thereby decelerating the fall and the ultimate speed of impact thereof onto the ground (82).

4. Unmanned Multicopter-Drone (170).

Figures (22, 23, 24) present the two-way communication between transmitter and receiver wherein the transmitter (140), Figure (23), located at the ground or marine control station provides the facilities and may also function as a receiver at the same time thus enabling the human control of an unmanned Multicopter-Drone (170) which provides the receiver that may also function as a transmitter respectively. In this wireless, two-way communication the information shall be sent via electromagnetic waves (140a).

The extended strap (11) of the energy absorbing device (10) is presented in Figure (24) following the rapid activation thereof after the antenna (105) thereof has received a signal for the activation of the motor (130) thereby causing the activation of said energy absorbing device (10) and the tearing of said plurality of transverse stitches (14), Figure (6), resulting in the application of a counterforce to the force exerted by the weight of the unmanned Multicopter-Drone (170), Figure (24), thereby decelerating the fall and the ultimate speed of impact thereof onto the ground (82).

While hereinabove the invention has been described by reference to various preferred embodiments, it is to be appreciated that these are for illustrative purposes only and that those skilled in the art will realize that changes and modifications may be made thereto without departing from the spirit of the invention; it is therefore intended to include such changes and modifications falling within the scope of the invention.

Claims

CLAIMS1. Radio receiver (100) fitted onto an RC energy absorbing device (10) that is connected to the main riser strap (52) of a Parachute (52), characterized in that: said Radio receiver (100) is housed in a case (101) that is fixed onto said energy absorbing device (10), and said case (101) of said receiver (100) comprises the battery(-ies) (110), the telescopic automatic Antenna (105) which receives radio control signals sent remotely by a transmitter and directs said signals to the receiver circuit board (115) fitted with the servo (120) and to the mini-motor (130) thereof, and when the axle (131) of said motor rotates along with the special bobbin (132) thereof, it pulls the thread (125) and by extension the retaining pin (65) connected to said thread from the 3-ring release system (60), wherein said RC energy absorbing device (10) comprises a strap (11) of predefined length with a selected portion of the strap (11) 'olded to half the original length thereof and the two resulting half-lengths (11a, 11b) of the strap are sewn with a plurality of lengthwise stitches (14), and wherein said first coupling member (30) is connected to said 3-ring release system (60) comprising a smaller ring (63), a medium-sized ring (62), and a larger ring (61) wherein by means of said release system (60) said first coupling member (30) shall be restrained under tension, aid wherein one upper end of the RC energy absorbing device (10) is connected by means of a first coupling member (30) to the carabiner (51) at the end of a main riser strap (52) of the parachute (50), and a lower end of the RC energy absorbing device (10) is connected by means of a second coupling member (40) to the carabiner (53) at the end of the respective main suspension straps (54, 55, 56) of the aircraft (70), helicopter (71), and UCAV-Aerial target (88), UAV (86), Multicopter-Drone (170) by means of which they are connected to the parachute.(50), and when said Receiver (100) receives by means of said Antenna (105) radio control signals sent remotely by a transmitter at a specified moment during the approach of said aircraft (70) and UCAV (88), UAV (86), Drone (170) of said ground (82), said Radio receiver (100) unlocks the first coupling member (30) that is restrained under tension thereby releasing it along with said larger ring (61) of said 3-ring release system (60), causing the activation of said RC energy absorbing device (10) and the tearing of said plurality of lengthwise stitches (14), resulting in the application of a counterforce to the force exerted by the weight of the aircraft (70), helicopter (71), and UCAV-Aerial target (88), UAV (86), Multicopter-Drone (170), thereby decelerating the fall and the ultimate speed of impact thereof onto the ground (82).
2. Radio receiver (100), fitted onto RC energy absorbing device (10), according to claim 1, characterized in that: said selected portion of strap (11) comprising a strap portion (11a) and a strap portion (11b) being folded with said strap portion (11a) abutting said strap portion (11 b) is the entire length of said strap (11), which extends from one edge (lc) to the other edge (1d), wherein the strap (11) after attachment of the edge (1d) thereof onto said second coupling member (40) passes through the opening (34) of the first coupling element (30), is thereafter separated into the two strap portions (11a, 11b) to form an opening (12), said transverse arm (32) of the first coupling member (30) being enclosed within said opening (12), said two strap portions (11a, 11b) being sewed with a plurality of lengthwise stitches (14) past said opening (12), wherein when a force exceeding a predetermined value is being exerted onto the first coupling member (30) and said 3-ring release system (60) is unlocked said transverse arm (32) performs tearing of the lengthwise stitches (14) and effects separation of said abutting strap portions (11a, 11b), said tearing of the transverse stitches (14) thereby providing absorption of the energy produced as a result of an abruptly acting force exerted by said main strap (52) of the parachute (50) upon activation of the energy absorbing device (10) and wherein said energy absorbing device (10) retains a precisely same length before use with said strap portions (11a, 11 b) abutting each other and after use with said strap portions (11a, 11 b) having been separated.
3. Radio receiver (100), fitted onto RC energy absorbing device (10), according to claim 1, characterized in that: said first coupling member (30) is a strong plate with a generally rectangular shape and a width corresponding to the width of the strap (11), said first coupling member (30) comprising an arm (33) at one end and a suspension D-ring (31) at the other end thereof, said arm (33) being connected to said 3-ring release system (60) and said suspension D-ring (31) being connected to said end carabiner (51) of the main strap (52) of the parachute (50), said first coupling member (30) further comprising a transverse arm (32) extending parallel to the arm (33) and the sUspension D-ring (31), an opening (34) being provided in between said arm (32) and said arm (33) and an opening (35) being provided in between said arm (32) and said suspension hook (31), and said second coupling element (40) is a strong plate comprising a suspension O-ring (45) with a linear arm (41) at the other end thereof and an opening (48) in between said linear arm (46) and said D-ring (45) as well as an opening (47) between said arm (41) and said arm (46), wherein close to the lower end of the strap (11) said box/case (101) housing the Radio receiver (100) is connected, and said lower end of the strap (11) is connected to the coupling member (40) with a lower edge (1d) of said strap (11) being arranged to pass through the opening (47), folded to form a loop (16) enclosing said linear arm (41) and strongly sewed with stitches (37) along a line (17) thereby securely connecting said strap (11) to said said second coupling element (40).
4. Radio receiver (100), fitted onto RC energy absorbing device (10), according to claim 1, characterized in that: said ring (61) of said 3-ring release system (60) is being arranged so as to follow the movement of said first coupling member (30) after having been disconnected from the mutually engaged rings (62, 63) of the 3-ring release system (60), said middle ring (62) being securely bound to a strip (66) onto said strap (11), whilst said small ring (63) is securely bound to a strip (67) onto said strap (11) and maintained at a locked condition by means of a retaining pin (65) passing through a short strip (64) with a loop surrounding said small ring (63), wherein when a slight pulling action is exerted by said motor (130) onto the retaining pin (65) by means of the thread (125), said small ring (63) is released from said loop of the short strip (64) and said large ring (61) is immediately released from said mutually engaged rings (62, 63), said first coupling member (30) being thereafter moved together with said large ring (61) as it is being attracted by the strap (52) of the parachute (50).
5. Radio receiver (100), fitted onto RC energy absorbing device (10), according to claim 1, characterized in that: said case (101) is mounted onto the lower end of said sewed portion of the strap (11) of the energy absorbing device (10), and the antenna (105) of said Radio receiver (100) is of telescopic type and one end of the thread (106) is connected to the tip of the antenna (105) while the other end thereof is connected to the main strap (52) of the parachute (50) at a specified distance, and when the strap (52) is extended it pulls the thread (106) thereby extending said Antenna (105) of said Radio receiver (100) of the energy absorbing device (10) which receives the electromagnetic signal sent remotely by a portable transmitter and directs it to the Receiver circuit board (115) of said Radio receiver (100).
6. Radio receiver (100) fitted onto RC energy absorbing device (10), according to claim 1 characterized in that: energy absorbing device (10) equipped with said Radio receiver (100), said Antenna (105) thereof receives a remote signal (141a) sent from a small, portable radio transmitter equipped with a button (141) by the pilot within the cockpit of a passenger aircraft (70), Helicopter (71) close to the ground (82) at a height of approximately 7-8m, and said motor (130) of the Radio receiver (100) pulls said retaining pin (65) by means of the thread (125) and releases said retaining pin (65) from said retaining loop (65) thereby causing the immediate collapse of said rings (62, 63), the release of said large ring (61), and the activation of said first coupling member (30) which is firmly connected to said large ring (61) by means of said arm (33), and the release and rapid movement thereof causes the activation of said RC energy absorbing device (10) and the tearing of said plurality of transverse stitches (14) thereby decelerating the fall and the ultimate speed of impact thereof onto said ground (82).
7. Radio receiver (100), fitted onto RC energy absorbing device (10), according to claim 1, characterized in that: said Antenna (105) of said Radio receiver (100) of the energy absorbing device (10) receives RC signals (140a) from a ground or marine control station equipped with a transmitter (140) for the human control of UCAV (88), said Radio receiver (100) directs said signals to the mini-motor thereof (130) and the axle (131) thereof rotates together with the mini-bobbin (132) comprising said two disks (133), (134) forming a wide opening for the pulling and winding of the thread (125) connected to the retaining pin (65), and close to said disks (133), (134) there is the guide (135) for the alignment of the thread (125) to the mini-bobbin (132), said thread (125) pulling the retaining pin (65) that unlocks the 3-ring release system (60) and activating the RC energy absorbing device (10) of the UCAV (88).
8. Radio receiver (100), fitted onto RC energy absorbing device (10), according to claim 1, characterized in that: said Antenna (105) of said Radio receiver (100) of the energy absorbing device (10) receives RC signals (140a) from a ground or marine control station equipped with a transmitter (140) for the human control of a UAV (86), said Radio receiver (100) directs said signals to the mini-motor (130) thereof and the axle (131) thereof rotates together with the mini-bobbin (132) thereof, said bobbin comprising said two disks (133), (134) forming a wide opening adapted for the winding/pulling of the thread (125) connected to the retaining pin (65), and close to the disks (133), (134) is the guide (135) for the alignment towards the mini-bobbin (132) of the thread (125) that pulls the retaining pin (65) thereby unlocking the 3-ring release system (60) and activating the RC energy absorbing device (10) of the UAV (86).
9. Radio receiver (100), fitted onto RC energy absorbing device (10), according to claim 1, characterized in that: said Antenna (105) of said Radio receiver (100) of the energy 35 absorbing device (10) receives RC signals (140a) from a ground or marine control station equipped with a transmitter (140) for the human control of an unmanned Multicopter-Drone (170), said Radio receiver (100) directs said signals to the mini-motor (130) thereof and the axle (131) thereof rotates together with the mini-bobbin (132) thereof which comprises said two discs (133), (134), adapted for the winding/pulling of the thread (125) connected to the retaining pin (65), and close to the disks (133), (134) is a guide (135) for the alignment towards the bobbin (132) of the thread (125) which pulls the retaining pin (65) thereby unlocking said 3-ring release system (60) and activating the energy absorbing device (10) of the unmanned Multicopter-Drone (170).15 20 25 30