METHOD AND APPARATUS FOR AIRBORNE DISSEMINATION AND IMPLANTATION OF SEEDS

Abstract

This invention relates to a method and apparatus for the airborne dissemination and implantation of seeds utilizing an aerodynamic seed delivery apparatus with built-in nutrients, anti-pest, and anti-fungal properties that can be disseminated rapidly from an airborne platform. The velocity of impact and depth of penetration into specific soil types by the delivery apparatus can be controlled up to a terminal velocity kinetic energy by exploiting a specified drag coefficient, mass, and altitude of release. The seeds are delivered and imbedded into the soil at the optimal depth and orientation to maximize germination rates, since seed orientation has a pronounced effect on germination and sprout mortality rates. Flight paths for Unmanned Aerial Vehicles (UAVs) utilized for dissemination can be automated to adjust coordinates based on wind vectors, terrain elevation data, and soil permeability data to efficiently achieve a desired penetration depth across a specified geographic area.

Claims

1. A method to calculate a flight path of an Unmanned Aerial Vehicle (UAV) comprising: a. a delineated geographic area for the desired dissemination of seeds, b. a dissemination apparatus is on the UAV, c. said dissemination apparatus is configured to release a plurality of aerodynamic seed delivery apparatus, d. a predetermined rate of release of said dissemination apparatus is specified, e. a predetermined area of coverage for said dissemination apparatus is specified from a coordinate above said delineated geographic area, f. a means to enable and disable release of aerodynamic seed delivery apparatus from said dissemination apparatus, g. a specified depth of implantation desired for said aerodynamic seed delivery apparatus on said delineated geographic area, h. a specified penetrability of the target soil within said delineated geographic area, i. a specified density of seed distribution desired on said delineated geographic area, j. a specified drag coefficient of said aerodynamic seed delivery apparatus, k. a specified mass of said aerodynamic seed delivery apparatus, l. a specified cross-section of said aerodynamic seed delivery apparatus, whereby said flight path will span said delineated geographic area such that said aerodynamic seed delivery apparatus are released from an elevation above said target soil such that sufficient velocity is achieved to ensure said specified depth of implantation is achieved throughout the said geographic area at said density of seed distribution by utilizing said means to enable and disable release.

2. A method according to claim 1 further comprising: a. controlling, by at least one computing device of the UAV, a flight path of the UAV, b. a wind velocity, c. and adjusting, by the at least one computing device, the flight path of the UAV based on wind velocity, whereby said flight path will be adjusted to ensure said aerodynamic seed delivery apparatus are released at the correct coordinates within said delineated geographic area to achieve implantation throughout the said geographic area at said density of seed distribution.

3. A method according to claim 1 further comprising: a. controlling, by at least one computing device of the UAV, a flight path of the UAV, b. a digital terrain elevation data for said delineated geographic area, c. and adjusting, by the at least one computing device, the flight path of the UAV based on ground elevation data, whereby said flight path elevation will be adjusted to ensure said aerodynamic seed delivery apparatus are released at the correct elevations within said delineated geographic area to achieve implantation throughout the said geographic area at said density of seed distribution.

4. A method according to claim 1 further comprising: a. controlling, by at least one computing device of the UAV, a flight path of the UAV, b. a ground elevation sensor on the UAV, c. and adjusting, by the at least one computing device, the flight path of the UAV based on detected elevation data, whereby said flight path elevation will be adjusted to ensure said aerodynamic seed delivery apparatus are released at the correct elevations within said delineated geographic area to achieve implantation throughout the said geographic area at said density of seed distribution.

4. A method according to claim 1 further comprising: a. controlling, by at least one computing device of the UAV, a flight path of the UAV, b. a digital terrain penetrability data for said delineated geographic area, c. and adjusting, by the at least one computing device, the flight path of the UAV based on ground penetrability data, whereby said flight path elevation will be adjusted to ensure said aerodynamic seed delivery apparatus are released at the correct elevations within said delineated geographic area to achieve implantation throughout the said geographic area at said density of seed distribution.

Description

DRAWINGS—FIGURES

[0051] FIG. 1a is a front view of an example of a Seed Delivery Apparatus.

[0052] FIG. 1b is a front view of another example of a Seed Delivery Apparatus.

[0053] FIG. 2a is a bottom view of the Seed Delivery Apparatus of FIG. 1a.

[0054] FIG. 2b is a bottom view of the Seed Delivery Apparatus of FIG. 1b.

[0055] FIG. 2c is a top view of the Seed Delivery Apparatus of FIG. 1a.

[0056] FIG. 2d is a top view of the Seed Delivery Apparatus of FIG. 1b.

[0057] FIG. 3a is a lower front perspective view of the Seed Delivery Apparatus of FIG. 1a.

[0058] FIG. 3b is a lower front perspective view of the Seed Delivery Apparatus of FIG. 1b.

[0059] FIG. 4a is a vertical cross-sectional view of the Seed Delivery Apparatus of FIG. 1a.

[0060] FIG. 4b is a vertical cross-sectional view of the Seed Delivery Apparatus of FIG. 1b.

[0061] FIG. 5a is a top view of a constant elevation course.

[0062] FIG. 5b is a top view of a contoured elevation course.

DETAILED DESCRIPTION

[0063] FIG. 1a is a front view of a simple example of a Seed Delivery Apparatus (“simple apparatus”). FIG. 1b is a front view of a compound example of the Seed Delivery Apparatus (“compound apparatus”). The head 1 of the apparatus in FIG. 1a is hemiellipsoid with height h.sub.1 and diameter d.sub.1, but depending on the desired drag coefficient, it could also be a hemisphere or cone, or other geometrical shape (e.g., a pyramid or a trapezoidal prism). In FIG. 1a, the geometry of 1 matches the geometry of the body 2, where they connect, both being circular, where 2 is a cylinder of height h.sub.2 and diameter d.sub.1 and having the same diameter as 1. The last part of the simple apparatus is the tail 3, which is a cone in FIG. 1a, has height h.sub.3 and diameter d.sub.1, and is connected to the body with the same geometry and diameter as 2. In FIG. 1b, the compound apparatus also has 1, 2, and 3, however 1 consists of a plurality of segments, with the first segment of the head 4 being connected to the second segment of the head 5 which is connected to 2. Each segment of the head may have a slightly different geometry based on the desired drag coefficient of the apparatus, and in FIG. 1b, 4 is a truncated hemisphere with a height h.sub.4 and diameter d.sub.4 while 5 is a truncated cone with a height h.sub.5, a minimum diameter of d.sub.4 and a maximum diameter d.sub.5. No matter how many segments a head has, they all have matching geometries where they connect and the last segment connects to 2 with the same geometry of 2. In FIG. 1b, the compound apparatus also has a segmented 3 consisting of the first segment of the tail 6, and the second segment of the tail 7. The 6 is a truncated cone with a height h.sub.6, a maximum diameter of d.sub.1 and a minimum diameter of d.sub.6, and 6 is connected to 2 with the same geometry. The 7 is a cone with a maximum diameter of d.sub.6 and a height of h.sub.7. Generally, h.sub.1>=0, h.sub.2>=0, and h.sub.3>=d.sub.1, while typically, h.sub.1>=d.sub.1, h.sub.2>=d.sub.1, and h.sub.3>=2d.sub.1, so that the apparatus falls with 1 pointed down and 3 pointed up due to a forward center of gravity (i.e., towards 1) and air resistance that pushes 3 up. Despite the dimensions, geometries, and aerodynamics of the apparatus, these components, 1, 2, and 3, are comprised of a media consisting of a compound, preferably organic, such as clay or compressed sand, but not necessarily so. The media, especially if organic, should always be sterilized to preclude the risk of spreading pathogens to different geographic regions. This media may also contain one or more fertilizers and/or micronutrients to facilitate germination and early growth, as well as one or more fungicidal components. Compounds may also be included in the media to dissuade pests from collecting them, such as a coloring agent or compounds with an unpleasant taste. Alternatively, the nutrients, fungicidal compounds, and/or pest repellants may be applied as a coating to the apparatus. The volume of the apparatus can be calculated using simple volumetric formulas for each of 1, 2, and 3, to include segments if compound.

[0064] FIG. 2a is a bottom view of the simple apparatus. FIG. 2b is a bottom view of the compound apparatus. FIG. 2c is a top view of the simple apparatus. FIG. 2d is a top view of the compound apparatus. On the bottom view of the simple apparatus (FIG. 2a), only the hemiellipsoid 1 is visible. On the head of the compound apparatus (FIG. 2b), two segments of 1 are visible, as the truncated sphere 4 appears in the center of the truncated cone 5 on 1. On the top view of the simple apparatus (FIG. 2c), only the conical 3 is visible. On the top view of the compound apparatus (FIG. 2d), two segments of 3 are visible, as the conical 7 appears in the middle of the truncated cone 6 on 3.

[0065] FIG. 3a is a lower front perspective view of the simple apparatus. FIG. 3b is a lower front perspective view of the compound apparatus. On the simple apparatus perspective view (FIG. 3a), the hemiellipsoid 1 appears below and connected to the cylindrical 2 and 2 is below and connected to the conical 3. On the compound apparatus perspective view (FIG. 3b), 1 consists of two segments, including the truncated sphere 4 which appears below and connected to the center of the truncated cone 5 on 1. The truncated cone 5 is below and connected to the cylindrical 2. The 3 consists of two segments, including the conical 7 which appears above and connected to the truncated cone 6 on 3, while 6 is above and connected to 2.

[0066] FIG. 4a is a vertical cross-sectional view of the simple apparatus. FIG. 4b is a vertical cross-sectional view of the compound apparatus. In the simple apparatus cross-sectional view (FIG. 4a), the outline of the hemiellipsoid 1, the cylindrical 2, and the conical 3 are visible with 1 at the bottom, 2 in the middle, and 3 at the top. Centered inside of the apparatus the seed 8 is visible with the seed coat 9 and radicle 10 oriented to point down towards 1. The optimal orientation of 10 for genus Pinus is down (Paliwal, D. P., et al.) and will be down for most species since this is where the root originates, however, 8 could be oriented with 10 at a different angle within the apparatus if advantageous for other genus or species. In the compound apparatus cross-sectional view (FIG. 4b), the outline of the two segments of 1, the cylindrical 2, and the two segments of 3 are visible with 1 at the bottom, 2 in the middle, and 3 at the top. In this example, 1 consists of two segments, including the truncated sphere 4 which appears below and connected to the center of the truncated cone 5 on 1. The truncated cone 5 is below and connected to the cylindrical 2. The 3 consists of two segments, including the conical 7 which appears above and connected to the truncated cone 6 on 3, while 6 is above and connected to 2. Also visible centered inside of the apparatus is 8 with 9 and 10 oriented to point down towards 1.

[0067] FIG. 5a is a top view of a constant elevation course. FIG. 5b is a top view of a contoured elevation course. An example of a rectangular geographic target area for dissemination and implantation 11 is shown in FIG. 5a. This area can be covered by a continuous flight path with a start point 12 and end point 13, which consists of a one or more long tracks 14 which are connected by short tracks 15. In this example, 14 and 15 are linear and 14 are latitudinal while 15 is longitudinal. The direction of 14 and 15 could be any angle, with generally 14 being parallel. With such a flight path, any contiguous area could be covered by an aerial vehicle with a dissemination apparatus configured to release the Aerodynamic Seed Delivery Apparatus at a rate desired, either individually or in a stream, depending on the density of implantation desired. A mechanism to release either singular, plural, or a control valve to release a stream from a reservoir constitute means to enable and disable release of the Aerodynamic Seed Delivery Apparatus. Such a dissemination apparatus would have a specified area of coverage, or area that the Aerodynamic Seed Delivery Apparatus could be disseminated to from one coordinate above 11, and this area of coverage could be variable depending on the elevation of the aerial vehicle above 11. In this example, 11 is assumed to be of a constant elevation and penetrability such that the elevation of the aerial vehicle can be constant throughout all 14 and 15 from 12 to 13. For this flight path, generally, A=2rnl and h=2r where A is the area to be covered (or the area of 11), r is the radius of dissemination from the vehicle, and l is the length 14, n is the quantity of 14. If the lengths of 14 are not the same, and the 14 are numbered 1 to n, let l.sub.1=the length of the long path i, then generally

[0068] A=2r*sum(l.sub.1) with i=1 to n. The elevation of this flight path above 11 would depend on the desired kinetic energy of the Seed Delivery Apparatus to achieve a desired depth of penetration given the soil penetrability. FIG. 5b also shows an example of a rectangular geographic target area 11. This area can also be covered by a continuous flight path from 12 to 13, which consists of multiple 14 which are connected by 15. However, in this example either the elevation or penetrability, or both, are variable across 11. To efficiently utilize and conserve aerial vehicle energy, changes in elevation should be minimized, and each individual 14 has a constant elevation, while each 15 would include any required elevation changes, so that for a majority of the time the aerial vehicle is operating at constant elevations between 12 and 13. Also, the lowest altitude disseminations can be completed first to preclude expending energy to lift delivery apparatus to an altitude where they will not be disseminated. Together these methods optimize energy utilization by the aerial vehicle. In this example, each 14 consists of a curved path with a constant elevation as required by the elevation and penetrability of 11, while each 15 includes any required elevation changes between individual tracks of 14.

DRAWINGS—REFERENCE NUMERALS

[0069] 1 head [0070] 2 body [0071] 3 tail [0072] 4 first segment of head [0073] 5 second segment of head [0074] 6 first segment of tail [0075] 7 second segment of tail [0076] 8 seed [0077] 9 seedcoat [0078] 10 radicle [0079] 11 target area for dissemination and implantation [0080] 12 start of flight path [0081] 13 end of flight path [0082] 14 long track on flight path [0083] 15 short track on flight path

Operation

[0084] The operation for the airborne dissemination and implantation of seeds utilizing aerodynamic seed delivery apparatus includes the development and production of said apparatus configurations for the delivery of seeds of different genus and species, identifying specifications for the release of said apparatus for various soil penetrability in order to achieve optimal implantation depths, and the automation of efficient UAV flight paths for the efficient and effective dissemination of said apparatus across specified areas.

[0085] 1. Once a genus and species is selected for dissemination, the specified seed width, length, mass, optimal germination orientation, and recommended implantation depth are utilized to identify an optimal simple or compound apparatus targeted for implantation to a soil of specified penetrability;

[0086] 2. Media for the apparatus is identified, including a composition of materials that may include inert, nutrients, anti-fungal, and/or anti-pest components, and the density for this media is specified;

[0087] 3. The dimensions and geometry for the head, body, and tail, utilizing the specified media density is determined providing a predetermined gross mass (m) drag coefficient (C), nose performance coefficient (N), cross-section (A), terminal velocity (v), and a minimum elevation above the ground required for said terminal velocity of the apparatus;

[0088] 4. A form for the specified apparatus can be produced utilizing the apparatus dimensions;

[0089] 5. Automated production of delivery apparatus utilizing said form, media, and seeds;

[0090] 6. Apparatus may optionally be coated with nutrients, anti-fungal, and/or anti-pest components;

[0091] 7. Said apparatus may be disseminated by any aerial vehicle including UAVs from specified altitudes as required for specified ground elevation and soil penetrability;

[0092] 8. Flight paths for UAV may be optimized by identifying a series of parallel or contoured tracks of continuous elevation as required by terrain elevation and/or soil penetrability and completing segments of minimal altitude first to preclude unnecessary lifting of mass.

REFERENCES CITED

U.S. Patent Documents

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Other Publications

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