EP3652055B1 - Gesteuerte anhebeanordnung mit foil für halbsteifes boot - Google Patents

Gesteuerte anhebeanordnung mit foil für halbsteifes boot Download PDF

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Publication number
EP3652055B1
EP3652055B1 EP18736954.1A EP18736954A EP3652055B1 EP 3652055 B1 EP3652055 B1 EP 3652055B1 EP 18736954 A EP18736954 A EP 18736954A EP 3652055 B1 EP3652055 B1 EP 3652055B1
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EP
European Patent Office
Prior art keywords
boat
wing
semi
lift
rigid
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Active
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EP18736954.1A
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English (en)
French (fr)
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EP3652055A1 (de
Inventor
David Raison
Jean Mathieu BOURGEON
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Seair SAS
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Seair SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B7/00—Collapsible, foldable, inflatable or like vessels
    • B63B7/06—Collapsible, foldable, inflatable or like vessels having parts of non-rigid material
    • B63B7/08—Inflatable
    • B63B7/082—Inflatable having parts of rigid material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
    • B63B1/28—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils
    • B63B1/30—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils retracting or folding

Definitions

  • the present invention relates to a supporting assembly with a profiled wing (such a profiled wing being commonly referred to as a “foil” in widespread Anglo-Saxon terminology, or also a wing), for boats not propelled by sails.
  • a profiled wing such as a “foil” in widespread Anglo-Saxon terminology, or also a wing
  • boats not propelled by sails may be, for example, boats propelled by heat engine, by electric, hydraulic, solar, hydrogen, hydrojet, etc.
  • the invention applies to motorized semi-rigid boats.
  • the "engine” of these boats can be a heat engine, electric, hydraulic, or of another nature.
  • the propulsion member of this engine may for example be a propeller or a turbine. In the example which will be detailed in this application, this is a propeller motor.
  • Such boats are described for example in JP S47 30493 U 6, US 3,810,268 A Where GB 2 091 646 A .
  • the foil concept has been developed for years for boats of various types, and in particular for sailing boats.
  • the boat equipped with one or more foils submerged in water is intended to float on the water at a standstill or at reduced speed (Archimedean regime), like a boat without foils.
  • this lift can be used to generate various effects (for example: tend to lift the boat upwards). above the water, or exercise a moment of righting on the boat).
  • foils are typically used to counter the heel of the boat under sail, and thus tend to straighten it. More marginally, foils on sailing boats can be used to tension to a certain extent to lift the boat, so as to decrease its wetted surface (ie its hull surface which is submerged).
  • the foils of sailing boats when they are arranged in pairs (generally a single pair) on either side of the longitudinal axis of the boat, are only partially used: only the foil located under the wind of the heeling boat really "works", the other foil not being useful, even having harmful effects on the good running of the boat because being submerged with an unwanted orientation but resulting from the installation of the foil on the boat.
  • retractable foils have been devised through the hull of the boat.
  • Sailing boats have thus recently been known in which the foils located respectively on the port and starboard side of the boat, can be retracted at will and independently of one another.
  • this foil downwind is fully submerged, and hydrodynamically active by generating lift
  • this upwind foil doesn is not or only very little submerged, and its possible undesirable hydrodynamic effects are avoided.
  • the invention in question here relates to motor boats, and more particularly to semi-rigid type boats.
  • Semi-rigid boats are a well-known type of motorized boat that include a rigid hull and inflatable side protection tubes. These boats are not today equipped with foils. The reason is that this integration of foils on semi-rigid motorized boats poses many problems, which are linked in particular to the sizing and integration of the foils in the boat, to the boat structures which must withstand the forces linked to the foils which are important and which are distributed differently from what we know of the forces applied to semi-rigid without foils, and the size of the installation which could encroach in particular on the interior habitable volume (moreover reduced), while respecting the safety conditions and industry standards.
  • the problem is particularly acute for the adaptation of foils on a semi-rigid boat which meets very specific constraints of use which are different from those of sailing boats or motor boats.
  • Another problem that arises with the integration of load-bearing structures with a load-bearing wing on motorized semi-rigid boats is the particular nature of the semi-rigid boat which is used in a so-called beaching application in commonly adopted professional language, namely berthing on the beach.
  • the advantage of a semi-rigid being its flexibility of use, its lightness, to tackle difficult places and bodies of water where the depth is shallow or even zero in the event of docking.
  • the supporting structures must be adapted to the navigation characteristics specific to the semi-rigid, which sails in particular without heel, unlike a sailing boat (and especially sailing boats equipped with foils).
  • a main object of the invention is to provide a supporting assembly with a profiled wing for a motorized semi-rigid boat which is effective, including on semi-rigid boats of the existing type.
  • a main object of the invention is to provide a supporting assembly with a profiled wing for a motorized semi-rigid boat which is robust and whose absorption of the forces generated does not alter the structure of the boat and does not require modifying the supporting structure of the boat. boat.
  • the invention provides a profiled wing bearing assembly for a motorized semi-rigid boat which includes a set of profiled wings which cooperate with a drive and locking mechanism cooperating with the supporting structure of the boat.
  • the invention provides a supporting assembly with a profiled wing for a motorized semi-rigid boat which comprises a support set on the wings which itself comprises front supports and one or more rear supports.
  • the term longitudinal axis is the axis of symmetry of the semi-rigid boat
  • the horizontal plane is a plane containing the longitudinal axis and the waterline of the boat
  • the vertical axis is an axis perpendicular to the horizontal plane.
  • the figure 1 shows a sectional view of a traditional semi-rigid boat (1), without foils. It is specified that the reference signs used in this figure could be used, for identical or similar elements, with regard to boats according to the invention.
  • the boat (1) of known type and shown on figure 1 is manufactured as follows: a rigid hull (13) of general V-shape.
  • a floor (P) closes the hull to serve as a floor and supports for passengers and equipment.
  • a cabin (12) inside the volume defined by the hull (13) and the floor (P) secured to the hull (13) consolidates the structure of the shell in the hollow formed by the shell (12).
  • the cabin can for example be rigid internal walls which stiffen the structure and in particular the hollow between the floor (P) and the hull (13).
  • the cabin (12), the hull (13), the floor (P), the shelf (14) are preferably all made from the same material and can be made in a very limited or even single number of parts.
  • the challenge is to provide a compromise in rigidity necessary to absorb the impacts of the boat on the water and the forces received, while maintaining sufficient lightness.
  • the perimeter of the edge of the floor forms a livet (14).
  • the livet (14) is rigid and secured to the hull. It goes up and constitutes like a small step on the perimeter of the floor so in particular that the tip of the feet of the users or the objects which drag on the floor do not come to strike against the inflated hollow roll (11) which borders the port side side wall, then the bow, then the starboard side of the boat.
  • a move-in (17), also called a central move-in, is commonly installed in the center of the floor.
  • the accommodation (17) can be offset from the center of the floor towards the port side or the starboard side, or towards the bow or the stern of the boat. It consists of one or more boxes which house and maintain the console which groups together the boat's control devices, such as the engine controls. They can also contain a chest (s) for storage or any other accessory for specific uses.
  • the height of the accommodation (17) is dimensioned so as to allow the driver of the boat to see the sea in front of him. This height is thus limited, on all semi-rigid boats.
  • FIGS. 3a and 3b show two sectional views of a semi-rigid boat according to the invention which comprises so-called front lift wings 40.
  • the boat is shown in the docking position, figure 3a , wings retracted, and in navigation position, figure 3b , wings spread.
  • the invention provides a clever solution which allows in the docking position to store the lifting wings, so that they do not interfere with or for berthing, nor for living space on the boat.
  • the wings deploy under the boat and thus allow the hull to be raised above the water level.
  • the storage and deployment of the wings (40) can be done symmetrically and simultaneously.
  • the two wings (40) are deployed and stored at the same time, and their position is symmetrical with respect to the longitudinal axis.
  • the foils are used very differently from the foils implemented on sailboats intended to navigate heights.
  • the wings (40) can both be deployed simultaneously and symmetrically, unlike sailboats which deploy their bearing surfaces in a non-symmetrical and non-simultaneous manner. , depending on their gite. Furthermore, the lift evolves symmetrically on either side of the longitudinal axis of the boat during the storage and deployment of the wings (40), and the boat (100) is therefore not destabilized by the operation. .
  • the wing (40) has substantially two parts: a so-called lift part, also called horizontal, and a part which makes it possible to descend horizontally into the water, which is a tree which can be called vertical.
  • the horizontal comprises a main horizontal part (42) which is the part which generates all (or alternatively: a substantial part) of the lift of the wing (40).
  • the main horizontal part (42) has a sufficiently large surface to generate lift capable of lifting the hull (13) at least partially out of the water.
  • the length (l on the representation of the figure 6 ) of the main horizontal part (42) is thus preferably between 80% of the radius (r in the representation of the figure 6 ) of the sausage (11) and 110% of the radius of the coil (11), preferably of the order of 95% of the radius of the coil (11).
  • the length l of the horizontal part is advantageously between 22 cm and 31 cm, preferably of the order of 27 cm.
  • the horizontal also comprises a coil wing tip (41) whose curved shape matches the shape of the coil (11) over an angular sector preferably between 10 degrees and 50 degrees, preferably around thirty degrees. Thanks to this clever correspondence of the shapes of the wing tip and the flange, the wing in the stowed position does not significantly protrude outside the flange.
  • the wing tip with coil (41) does not move away from the coil (11) by more than a distance (D on the representation of the figure 7 ) between 0 and 10 cm, preferably substantially equal to 2 cm.
  • the size (in particular the width) of the boat (100), the wings (40) of which are in the stowed position, is substantially equal to that of a boat having no wings (40).
  • Road transport of a boat (100) with wings (40) is therefore not limited.
  • the curved shape of the flanged wing tip (41) is used to hold the turns when the boat (100) is heeling on a wing (40) (this heeling being in any case more moderate than the heights observed on sailboats with foils - and this list is also very transient, being linked to the turn). Indeed, whatever the temporary list of the boat (100), a portion of the wing tip with flange (41) will be oriented in an optimal manner to generate lift.
  • This aspect of curved shape of the flanged wing tip can be combined with the other aspects described in this text, or implemented separately or even in isolation.
  • the vertical comprises a first rectilinear vertical part (43) then a second vertical part (44) which curves towards the center of the boat at an angle of approximately fifteen degrees.
  • This inwardly curved shape is designed to optimize the compromise of storage in the boat at an acceptable height and descent underwater to a maximum depth in order to raise the boat as much as possible, while avoiding the space constraints specific to the cramped nature of a semi-rigid boat, and more particularly boats of the small sizes of the existing range of semi-rigid boats.
  • the rectilinear vertical part (43) may have an angle of inclination (a on the representation of the figure 6 ) relative to the vertical axis (true (as defined at the beginning of this text).
  • the angle of inclination a relative to the vertical axis is between 0 degrees and a maximum angle amax of 45 degrees, preferably between 30 degrees and 40 degrees, preferably substantially equal to 36 degrees.
  • the main horizontal part (42) of the deployed wing is preferably positioned on the vertical axis between 10 cm below and 5 cm above the center (C on the representation of the figure 6 ) of the engine propeller (20).
  • the main horizontal part (42) of the deployed wing may be located at the same level on the vertical axis as the center of the engine propeller (20). This is valid for both wings which, let us remember, are typically deployed simultaneously and in the same manner, on both sides of the boat.
  • the propeller which acts in the water to propel
  • the main horizontal part (42) which acts in the water to generate lift
  • the propeller and the main horizontal part (42) are substantially at the same depth and work simultaneously, whatever either the lifting of the boat due to the lift of the wings, and the main horizontal part (42) is low enough to ensure satisfactory lift characteristics, without the propeller being liable to come out of the water when the boat (100) is at least partially lifted by the bearing surfaces.
  • the horizontal and the vertical are connected by a rounded elbow.
  • the thickness of the wing (40) can be of the order of 10 mm to 40 mm, preferably about 20 mm.
  • the average chord of the wing (40) can be between 100 mm and 500 mm, preferably about 300 mm.
  • the submerged length of a wing (40) (L on the representation of the figure 6 ) may be between 600 mm and 1200 mm, preferably about 900 mm.
  • the bearing surface of a wing (40) having an immersed length of 900 mm and an average chord of 300 mm is 54 dm 2 .
  • the wings (40) are located at the level of the accommodation (17) of the boat (100), on the longitudinal axis. On either side of the longitudinal axis at the level of the accommodation (17), the hull (13) of the boat (100) is pierced with a well (32) which follows the section of the vertical of the wing (40). Each wing (40) is intended to slide in the well (32) between the stowed position and the deployed position.
  • the well (32) opens in its lower part in the peripheral part of the rigid bottom of the boat and near the flange (11), so as not to interfere with the towing of the boat (100) on a road trailer when the wings (40) are in the stowed position. the towing on the road is thus facilitated.
  • the angle of inclination of the rectilinear vertical part (43) with respect to the vertical axis can also help to facilitate such towing, by spreading the wings of the trailer which will be placed under the boat. And this inclination also contributes to the wings passing through the rigid shell in its peripheral part.
  • the arrangement 17 comprises in its lower part a box 170 (hollow, or even full) which may constitute for example the cockpit or the pilot's seat for the pilot (the rest of the accommodation may include the engine controls, the steering wheel, windshield, etc.).
  • a box 170 (hollow, or even full) which may constitute for example the cockpit or the pilot's seat for the pilot (the rest of the accommodation may include the engine controls, the steering wheel, windshield, etc.).
  • a housing 1700 is formed in this part 170 of the recess (17) on either side of the longitudinal axis. Two housings 1700 are thus formed in the opposite walls of the lower part 170 of the arrangement, on each side of this arrangement.
  • the housing is a hole which allows the foil to pass through the wall of part 170, the contour of this hole following the section of the straight vertical part (43) of the wing which is associated with this housing, in order to be able to guide it sliding when it is retracted for storage, and when it is deployed.
  • the foil is in fact retracted inside the lower part 170, during its storage. More precisely, the “vertical” part of the foil is at least partially retracted inside the lower part 170, during this storage.
  • the height of the lower part 170 is limited (in any event it is in fact limited by the height of the accommodation 17), itself limited by the visibility constraint of the pilot.
  • the housings 1700 can be not simple holes passing through the walls of the part 170, but hollow ducts opening these walls and guiding the foils to the bottom of the duct (this bottom necessarily being below the underside of the wall 171).
  • the wells (32) and the housings have an angle of inclination corresponding to the angle of inclination between the rectilinear vertical part (43) and the vertical axis.
  • the size of the wings (40) is minimized by their sliding in the wells (32) and in the housings of the recess (17) between a stowed position, in which the end of the vertical wing ( 40) is in abutment against the upper part of the housing, and a deployed position, in which the end of the vertical of the wing is flush with the level of the upper part of the well (32) formed in the shell (13).
  • the length of the vertical of the wing (40) results from the depth of the housing, therefore from the height of the recess (17) and from the angle of inclination of the rectilinear vertical part (43).
  • the length of the vertical can advantageously be between 500 mm and 1500 mm, advantageously around 1000 mm.
  • the figure 3a shows the servo mechanism (31) for actuating and locking the wing on the boat hull.
  • a well 32) which hugs the section of the wing, housing the servo device (31) which actuates and locks the wing from and in a low or high position.
  • the servo device is secured to a protective housing (30) which protects the passage of the wing and the servo mechanism (31).
  • This protection box (30) is taken from the structural elements of the boat, floor, livet and cabin by resumption of lamination, gluing and / or bolting.
  • the protective housing (30) is taken up by an anchor which rests by recovery in the triangle formed between the sheerline (14), the hull (13) and the cabin (12).
  • the protective housing (30) has a substantially planar upper surface oriented at an angle which may correspond to the angle of the straight vertical portion (43).
  • the protective casing (30) houses the servo mechanism (31) and the vertical of the wing (40), while reconstituting an oblique floor.
  • the size of the wing (40) and of its control mechanism (31) is therefore minimal and safety is ensured for the people sailing on the boat (100).
  • the servo device (31) allows three things: 1 - the locking in position 2 - the translation 3 - a rotational movement to adjust the angle of the kite in the water.
  • the servo mechanism (31) allows these three things to be done simultaneously and symmetrically for each wing (40).
  • the figures 5a and 5b show a top view of two support arrangements of sets of front / rear wings according to the invention with a front set of port and starboard wings which is positioned at the height of the accommodation (17) and a rear wing (50) mounted on the rear motor shaft (20) figure 5a , or by a set of port and starboard rear wings (50) mounted in a way parallel to the set of front wings.
  • the rear wing (50) can advantageously have a bearing surface projected onto a horizontal plane participating for between 10% and 30% of the total lift of the boat (100), preferably participating for about 20% of the total lift. .
  • the bearing surface of the rear bearing plane may be of the order of 15 dm 2 .
  • Such a boat (100) can have a take-off speed of the order of 15 kts.
  • the present invention therefore relates to a supporting assembly for a semi-rigid boat comprising a hull (13), a cabin (12), a floor (P) and its livets (14), side flanges and bow (11), a fitting (17). ) on the floor (P), a rear engine (20) characterized in that for a front lift, side port and starboard at the level of the accommodation (17) the hull (13) is pierced with a well (32) which allows a wing (40) to pass locked in translation and rotation by a servo mechanism (31) mounted in a protective box (30) taken from the structural elements of the boat, floor, livet (14) and cabin (12), by resumption of lamination, gluing and / or bolting, the wing comprises a horizontal part with one end end of coil wing (41) whose curved shape matches the shape of the coil, and a wing vertical which includes a vertical end (44) which curves towards the center of the boat, and for aft lift, a wing
  • the present invention therefore relates to a supporting assembly for a semi-rigid boat characterized in that the rear lift can be a wing mounted on the drive shaft of the rear engine (20).
  • the present invention also relates to a supporting assembly for a semi-rigid boat characterized in that the rear lift comprises a set of port and starboard rear wings (50) mounted at the rear of the boat in parallel with the set of front wings.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Toys (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Harvesting Machines For Specific Crops (AREA)
  • Valve Device For Special Equipments (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Claims (4)

  1. Trägeranordnung für ein halbsteifes Boot, umfassend einen Rumpf (13), eine Kabine (12), ein Boden (P) und dessen Deckkanten (14), Seiten- und Bugrohre (11), eine zentrale Ausnehmung (17) auf dem Boden (P), umfassend einen unteren Teil (170), einen hinteren Motor (20) und vordere Tragflügel (40), dadurch gekennzeichnet, dass:
    - für einen vorderen Auftrieb, auf der Backbord- und Steuerbordseite auf der Ebene der zentralen Ausnehmung (17), der Rumpf (13) mit jeweiligen Vertiefungen (32) durchbohrt ist, welche die jeweiligen vorderen Tragflügel (40) hindurchgehen lassen, die in Translation und Rotation blockiert von Steuermechanismen (31) gesteuert werden, welche in Schutzkästen (30) montiert sind, die aus den Strukturelementen des Bootes, des Bodens, der Deckkante (14) und der Kabine (12) ausgeführt sind,
    - jeder vordere Tragflügel einen sogenannten horizontalen Teil mit einem zum Rohr gerichteten Flügelspitzenende (41) und einen sogenannten vertikalen Teil umfasst, der ein vertikales Ende (44) umfasst, das sich zur Mitte des Bootes hin krümmt,
    - jeder vordere Tragflügel so ausgelegt ist, dass sein sogenannter vertikaler Teil bei seiner Lagerung zumindest teilweise im Inneren des unteren Teils 170 eingefahren ist,
    - und für einen hinteren Auftrieb die Anordnung einen oder mehrere hintere Tragflügel umfasst.
  2. Trägeranordnung für ein halbsteifes Boot nach Anspruch 1, dadurch gekennzeichnet, dass die gekrümmte Form der vorderen Tragflügel mit der Form des Rohrs übereinstimmt.
  3. Trägeranordnung für ein halbsteifes Boot nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der hintere Auftrieb ein Tragflügel ist, der auf der Antriebswelle des hinteren Motors (20) montiert ist.
  4. Trägeranordnung für ein halbsteifes Boot nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der hintere Auftrieb einen Satz von hinterem Backbord- und Steuerbord-Flügel (50) umfasst, die am Heck des Boots parallel zum Satz der vorderen Flügel angebracht sind.
EP18736954.1A 2017-07-11 2018-07-11 Gesteuerte anhebeanordnung mit foil für halbsteifes boot Active EP3652055B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1770741A FR3061127B1 (fr) 2017-07-11 2017-07-11 Ensemble portant asservi a aile profilee pour bateau semi rigide
PCT/EP2018/068858 WO2019012016A1 (fr) 2017-07-11 2018-07-11 Ensemble portant asservi a aile profilee pour bateau semi rigide

Publications (2)

Publication Number Publication Date
EP3652055A1 EP3652055A1 (de) 2020-05-20
EP3652055B1 true EP3652055B1 (de) 2021-09-01

Family

ID=60955352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18736954.1A Active EP3652055B1 (de) 2017-07-11 2018-07-11 Gesteuerte anhebeanordnung mit foil für halbsteifes boot

Country Status (7)

Country Link
EP (1) EP3652055B1 (de)
AU (1) AU2018298837A1 (de)
CA (1) CA3067118A1 (de)
DK (1) DK3652055T3 (de)
ES (1) ES2911213T3 (de)
FR (1) FR3061127B1 (de)
WO (1) WO2019012016A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3101608B1 (fr) * 2019-10-02 2021-09-10 Seair Siège à foil pour bateau semi-rigide
FR3108578B1 (fr) * 2020-03-31 2022-02-18 Seair Berceau arrière pour foil directionnel rétractable.
FR3136223A1 (fr) * 2022-06-01 2023-12-08 Seair Couple de têtes de foils emboitables

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810268A (en) * 1970-10-21 1974-05-14 Firestone Tire & Rubber Co Hydrofoil attachment for boats
JPS5227503Y2 (de) * 1971-04-29 1977-06-22
IT1146586B (it) * 1981-01-27 1986-11-12 Arturo Colamussi Mezzi per diminuire la resistenza idrodinamica di imbarcazioni pneumatiche
FR3029497B1 (fr) * 2014-12-05 2018-05-11 Marc Van Peteghem - Vincent Lauriot Prevost - Vannes Bateau a voile a appendice de stabilisation ameliore

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Publication number Publication date
FR3061127A1 (fr) 2018-06-29
ES2911213T3 (es) 2022-05-18
EP3652055A1 (de) 2020-05-20
FR3061127B1 (fr) 2019-05-10
DK3652055T3 (da) 2021-12-06
AU2018298837A1 (en) 2020-01-16
WO2019012016A1 (fr) 2019-01-17
CA3067118A1 (fr) 2019-01-17

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