ROTARY-WINGED VEHICLE SYSTEMS AND DEVICES
20190315461 ยท 2019-10-17
Inventors
Cpc classification
F05D2220/76
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F02C3/103
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01D15/00
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Y02T50/60
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
B64C27/18
PERFORMING OPERATIONS; TRANSPORTING
F05D2220/329
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
International classification
B64C27/18
PERFORMING OPERATIONS; TRANSPORTING
Abstract
Rotary-winged vehicle systems and devices are disclosed. In one aspect, one or more engine components are mounted within rotor blades of the rotary-winged system. In one embodiment, engines are mounted within the rotor blades, with exhaust ports positioned at the rotor blade tips. In another embodiment, the engine of a rotary-winged vehicle includes a centrifugal compressor co-axially mounted with a spindle of the rotor blades. In one aspect, the compressor of one or more engines is decoupled from the engine turbine and electrically driven. In one aspect, the rotary-winged vehicle may be operated autonomously.
Claims
1. A rotary-winged vehicle system comprising: a plurality of rotor blades mounted to a central spindle, each rotor blade having a rotor blade length and attached to the central spindle at a rotor blade root and extending to a rotor blade tip; a plurality of engines, each engine mounted within an interior of each of the plurality of rotor blades; a plurality of exhaust ports, each exhaust port positioned at a rotor blade tip; a plurality of air intake ports, each air intake port disposed on a surface of each rotor blade; wherein: each of the plurality of air intake ports provide a source of air intake for a respective engine; and each engine propels a respective rotor blade rotationally about the central spindle.
2. The system of claim 1, wherein: the engine comprises a compressor, a turbine, and a combustion chamber; and the compressor is configured to receive the source of air intake from a respective intake port.
3. The system of claim 2, wherein the engine further comprises a drive shaft coupled to the turbine and to the compressor, wherein the drive shaft provides power to the compressor.
4. The system of claim 2, wherein the system further comprises a power source, the power source configured to provide power to the compressor.
5. The system of claim 4, wherein the power source is an electric power source configured to provide electrical power to the compressor.
6. The system of claim 2, wherein the system further comprises a controller configured to control operating parameters of the engine and to control a configuration of the plurality of air intake ports.
7. The system of claim 1, further comprising: a nozzle disposed within each of the plurality of rotor blades and positioned between a respective engine and rotor tip; and a plurality of sets of exhaust port vanes, each set of exhaust port vanes coupled to a respective exhaust port.
8. A rotary-winged vehicle system comprising: a plurality of rotor blades mounted to a central spindle, each rotor blade having a rotor blade length and attached to the central spindle at a rotor blade root and extending to a rotor blade tip; a fluid pipe disposed within a plurality of rotor blades; a centrifugal compressor mounted coaxial with the central spindle; a plurality of fluid collector-diffuser devices coupled to the centrifugal compressor; and a plurality of combustion chambers coupled to a respective fluid pipe; wherein: each of the plurality of fluid collector-diffuser devices receive a fluid from the centrifugal compressor and output the fluid to a respective fluid pipe; each of the fluid pipes output the fluid to a respective fluid pipe; each of the combustion chambers outputs to an exhaust port; and each respective rotor blade is propelled rotationally about the central spindle.
9. The system of claim 8, wherein each exhaust port is disposed at a rotor tip.
10. The system of claim 8, wherein each combustion chamber is disposed within each rotor blade.
11. The system of claim 8, further comprising: an electric generator coupled to the central spindle; and an electric motor in communication with the electric generator, wherein: the electric motor at least partially provides power to the plurality of combustion chambers.
12. The system of claim 8, wherein each combustion chambers is disposed at a rotor tip.
13. The system of claim 8, further comprising a plurality of sets of exhaust port vanes, each set of exhaust port vanes coupled to a respective exhaust port.
14. The system of claim 8, further comprising a controller configured to control operating parameters of the plurality of combustion chambers.
15. A jet engine system for a flying vehicle, the system comprising: a compressor; a turbine; a combustion chamber; an exhaust port; and a power source; wherein: the power source powers the combustion chamber; the compressor operates independently of the turbine; the combustion chamber receives compressed air from the compressor and outputs to the exhaust port.
16. The system of claim 15, wherein the power source is an electric power source.
17. The system of claim 15, wherein the combustion chamber is of a non-circular geometric cross-section.
18. The system of claim 15, wherein the flying vehicle is a rotary-winged flying vehicle.
19. The system of claim 15, further comprising a controller controlling operating parameters of the compressor.
20. The system of claim 15, further comprising a set of exhaust port vanes coupled to the exhaust port.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The disclosure will be readily understood by the following detailed description in conjunction with the accompanying drawings, wherein like reference numerals designate like elements. The elements of the drawings are not necessarily to scale relative to each other. Identical reference numerals have been used, where possible, to designate identical features that are common to the figures.
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[0047] It should be understood that the proportions and dimensions (either relative or absolute) of the various features and elements (and collections and groupings thereof) and the boundaries, separations, and positional relationships presented there between, are provided in the accompanying figures merely to facilitate an understanding of the various embodiments described herein and, accordingly, may not necessarily be presented or illustrated to scale, and are not intended to indicate any preference or requirement for an illustrated embodiment to the exclusion of embodiments described with reference thereto.
[0048] Not included for simplicity but implicit in the design is the addition of mechanisms variously referred to as cyclics and collectives that could be added to the spindle and alter the pitch of the rotor blade as it traverses around the spindle to provide additional control to the vehicle.
DETAILED DESCRIPTION
[0049] Reference will now be made in detail to representative embodiments. The following descriptions are not intended to limit the embodiments to one preferred embodiment. To the contrary, it is intended to cover alternatives, modifications, and equivalents as can be included within the spirit and scope of the described embodiments as defined, for example, by the appended claims.
[0050] A perspective view of a conventional rotary-winged vehicle 10 of the prior art is provided as
[0051] In contrast, the disclosure presents embodiments of rotary-winged systems wherein one or more engine components, or complete engines, are mounted within an interior of rotor blades of a rotary-winged system. Such configurations provide a number of advantages which will be discussed below. The embodiments of the disclosure and associated features will be described with respect to
[0052] In one embodiment, engines are mounted within the rotor blades, with exhaust ports positioned at the rotor blade tips. In another embodiment, the engine of a rotary-winged vehicle includes a centrifugal compressor co-axially mounted with a spindle of the rotor blades. In one aspect, the compressor of one or more engines is decoupled from the engine turbine and electrically driven. In one aspect, the rotary-winged vehicle may be operated autonomously.
[0053] With attention to
[0054] The rotary-winged system 200 of
[0055] The prior art includes RAMjet engines, pulse jet engines, and various rocket engines at the tips of the rotor of a rotary wing craft. Such designs may eliminate the torque generated by the hub or in vehicle engines. The lack of torque is advantageous because, e.g., it eliminates the need for a tail rotor or other similar anti torque system. Many of the problems associated with rotary wing aircraft, including difficulty to control, relatively high noise, hazard to nearby individuals and mechanical failure, relate to the need for a tail rotor.
[0056] However, many existing designs to eliminate the tail rotor are limited by the increased drag associated with the tip engines, often preventing the rotor to autogyro and creating a significant safety concern. Other existing designs describe the use of an in-rotor pulse jet engine and pressure jet variants as an alternative to tip engines. However, none of the existing designs have ever been demonstrated as viable flight options. Pulse jets, and related variations, though very simple and light weight in design, produce too little thrust to create sufficient rotation and thus provide insufficient lift.
[0057] The disclosure uses modern micro turbo jet engines that can produce sufficient thrust without increasing the drag significantly. In one embodiment, the intake for the jet engine is directed toward the hub of the rotor, and the thrust vectors out of a shrouded exhaust, thus providing the necessary rotation but not increasing rotor drag. In another embodiment, the turbine and the shaft components are not present, thrust is vectored out from the rotor tip, and the rotation of the rotor drives a hub-based generator or mechanical drive that drives the compressor directly or electrically.
[0058] Returning to
[0059] One or more rotor blades 210 comprise an engine 230 mounted within an interior of a rotor blade 210. In the cut-away depiction of a rotary-winged system 200 in
[0060] In the configuration of
[0061] In another embodiment, a four-bladed system 200 comprises a total of two engines 230, one at a rotor blade 210 at the 90-degree position and a second engine 230 at the opposite rotor blade 210 at the 270-degree position (i.e. the 9 o'clock position). The configurations of these two rotor blades 210, i.e. the rotor blades at the 90 degree and at the 270-degree position, would be identical and create a symmetrical arrangement.
[0062] Each rotor blade 210 that houses or contains an engine 230 comprises an air intake port 215 comprising an array or set of voids 216 or apertures configures to receive a fluid such as air. In the configuration depicted in
[0063] Engine 230 comprises a compressor 234, combustion chamber 235, set of stators 236, a turbine 237 engaged with a turbine shaft 238, and nozzle 233. In one embodiment, other than the relatively small size of the engine 230, the engine 230 of
[0064]
[0065] The rotary-winged vehicle system 300 comprises a power generator 350, such as an electric power generator. The power generator 350, among other things, provides power to the compressor 334. Such a configuration may be termed an electrically-decoupled turbine engine design. In the configuration of
[0066] Note that an electrically-decoupled turbine engine design allows non-traditional designs for the combustion chamber because the combustion chamber is no longer driven by a rotating shaft (which results in combustion chambers of traditionally cylindrical shape). In contrast, an electrically-decoupled turbine engine design is not design driven to be of cylindrical shape, and thus may be optimized for other parameters, resulting in essentially any shape in addition to a cylindrical shape. In addition, such separation of intake, compressor, combustion chamber of varied geometry and variable location of the exhaust thrust can be applied to fixed wing as well as rotary wing designs.
[0067] Conventional centrifugal and co-axial turbo jet designs use a single shaft connecting the rear turbine to the forward compressor element. This shaft transfers a portion of the thrust captured by the rear turbine and converts the energy into rotary motion to drive the compressor. The intake air is compressed and sent to the combustion chamber to provide increased efficiency of combustion fundamental to the engines function.
[0068] Typically, approximately 25% of the energy in the exhaust thrust is captured and used to drive the compression phase. However, due to differences in the velocity of airflow at the intake and the exhaust and the possible range of velocities, it has been very difficult if not impossible to design a system where both the rear turbine and front compressor are functioning optimally when rotating at identical speed, and thus the potential maximum efficiency is compromised. One design, by McCune as described in, e.g., U.S. Pat. No. 9,752,511 (McCune), is to modify the straight shaft with a gearing system to permit the turbine and compressor to operate at different rotational speeds while still directly driven. The design is reported to have improved efficiency by as much as 15%. However, this design is still limited in that increasing and decreasing thrust still requires the shaft driven compressor and turbine to spin up or spin down in response to increased or decreased thrust from the combustion chamber and is subject to significant inertia. It is also somewhat constrained by the air-fuel ratio entering the combustion chamber in that as fuel is increased, there is a period where the fuel mixture is rich until the compressor spins up and additional air flows into the combustion chamber. It is therefore possible to flood the engine with fuel and potentially cause the engine to fail or flame out, limiting the rate at which thrust can be increased. McCune is incorporated by reference for all purposes.
[0069] In the rotary-winged vehicle system 300 of
[0070] In yet another embodiment, there is no turbine connected to a generator and the electrical power is generated by a multiplicity of other sources, including but not limited to the movement of the vehicle itself, a rotor powered by the jet thrust, or a separately fueled power source.
[0071] Other embodiments of a rotary-winged vehicle system similar to those of
[0072] With attention to
[0073] The rotary-winged system 400 further comprises an electric motor 461 and an electrical generator 450, both coaxially mounted about a central spindle shaft 421. The electrical generator 450 generates electricity by way of the rotation of the shaft 421, and supplies electricity to the electric motor 461; which in turn powers the centrifugal compressor 462. The centrifugal compressor 462 provides compressed air to the combustion chamber 435, which in turn expels thrust through exhaust 439. In the embodiment of
[0074] The rotary-winged system 400 of
[0075] Returning to
[0076] The centrifugal compressor 462 is located centrally at a rotor hub area and is driven by electric motor 461. The centrifugal compressor 462 is located coaxially to the centrally located motor 461 and generator 450, the generator 450 itself connected radially to the set of rotor blade 410. Compressed air from the centrifugal compressor 462 is piped down, via fluid pipe 413, to and along one or several of the rotor blades 410 to a combustion chamber 435. The compressed air is received by a fluid pipe contained within a rotor blade 410, the fluid pipe 413 disposed within an interior of the rotor blade 410. The compressed air is mixed with fuel, liquid or gas, which is burned to produce thrust out exhaust pipe 439. The combustion chamber 435 is located at a distal (or radially far) point of the rotor bland 410 (i.e., at the rotor tip 412) and positioned such that the exhaust thrust causes the rotor to rotate about the central shaft 421 and thus generate lift.
[0077] The exhaust port 439 directs, with aid of one or more exhaust port vanes 441, the generated thrust out from the rotor blade 410. Generally, the thrust is nominally directed in the same plane as the rotor blades and at right angles to the axis of the rotor blades 410. However, the one or more exhaust port vanes 441 may vector the thrust out of this nominal direction. For example, the thrust may be directed slightly downward for additional vertical thrust of the rotary winged system 400.
[0078] In one embodiment, one or more of the exhaust port vanes 441 are configurable by way of a control system 610 (see
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[0080] The electrical generator 450 is coupled to the electric motor 461. The electric motor 461 rotates the centrifugal compressor 462. The electric motor 461 may be connected to the spindle shaft 421 and/or to the rotor blades 412. The collector-diffuser 463 directs and slows the compressed air from the centrifugal compressor 462 to the inside of each of the rotor blades 410.
[0081] In one embodiment, a portion of the compressed air generated by the centrifugal compressor 462 may be siphoned off to perfuse ultra-low resistance air bearings or provide cooling to the hub based electric motor 400. Furthermore, in one embodiment, the rotation of the rotor blades 410, as attached to the motor 463 and/or generator 450, may be used to generate electrical power to variously charge storage batteries or to power attached devices. Alternatively, or additionally, the power from the storage batteries may be used to drive the hub-based motor to rotate the rotor blades and to create lift, in addition to or instead of the gas-powered jet engine components.
[0082] Each of the rotary-winged vehicle system 400 and 500 may create lift using electric power for a certain period of time, then hydrocarbon power (e.g. gasoline, diesel, propane) to create lift for powered flight for another period of time. Also, the embodiment may also recharge storage batteries or power electrical instruments or devices (e.g. pumps, floodlights, winches). It should be noted that each of the rotary-winged vehicle system 400 and 500 would require some means for counter-torque given the torque generated by, e.g., the power generating system 450. The counter-torque may be provided by any of several techniques, to include a conventional tail rotor, a rotor blade system mounted above or below that depicted in
[0083] It should be noted that in some embodiments of the disclosed rotary-winged vehicle systems, the input elements to an engine are physically separate from the exhaust/thrust elements, enabling a larger design space for both engine design and rotary-winged vehicle system design. This is because conventional rotary-winged vehicle systems comprise engines in which the engine input elements (e.g. the input nozzle and air intake sections are positioned in a front cylindrical portion of an essentially continuous cylindrically-shaped engine, with the exhaust/thrust portion at the rear of the cylinder.
[0084] In one embodiment, an auxiliary engine, such as a traditional Auxiliary Power Unit (APU) of conventional commercial airliners, is used to power a compressor of an engine (rather than by a turbine shaft engaged by a turbine).
[0085]
[0086] For example, the control system 610 may interact with and control an electric power source to selectively power a rotary-winged system for a selected period of time, then switch to another power source, e.g. burning of a traditional hydrocarbon. The control system 610 may also control recharging of storage batteries or power electrical instruments or devices.
[0087] As further examples, the control system 610 may interact with and control engine parameters, such as combustion chamber temperature, pressure, etc. The control system 610 may also control the amount or degree of exposure or size of the voids 216 of
[0088] Also, the control system 610 may be configured to operate the rotary-winged system embodiments fully autonomously, i.e. without a human aboard the system.
[0089] In some embodiments, the rotary-winged vehicle may be configured to hover with need of forward speed, a capability particularly beneficial for safety during emergency flight conditions.
[0090] The above embodiments may, in combination or separately, may utilize computer software and/or computer hardware (to include, for example, computer-readable mediums) for any of several functions such as automated control and state estimation, and furthermore may utilize one or more GUIs for human interaction with modules or elements or components.
[0091] Examples of the processors as described herein may include, but are not limited to, at least one of Qualcomm Snapdragon 800 and 801, Qualcomm Snapdragon 610 and 615 with 4G LTE Integration and 64-bit computing, Apple A7 processor with 64-bit architecture, Apple M7 motion coprocessors, Samsung Exynos series, the Intel Core family of processors, the Intel Xeon family of processors, the Intel Atom family of processors, the Intel Itanium family of processors, Intel Core i5-4670K and i7-4770K 22 nm Haswell, Intel Core i5-3570K 22 nm Ivy Bridge, the AMD FX family of processors, AMD FX-4300, FX-6300, and FX-8350 32 nm Vishera, AMD Kaveri processors, Texas Instruments Jacinto C6000 automotive infotainment processors, Texas Instruments OMAP automotive-grade mobile processors, ARM Cortex-M processors, ARM Cortex-A and ARM926EJ-S processors, other industry-equivalent processors, and may perform computational functions using any known or future-developed standard, instruction set, libraries, and/or architecture.
[0092] The exemplary systems and methods of this disclosure have been described in relation to rotary-winged vehicle systems and devices. However, to avoid unnecessarily obscuring the present disclosure, the preceding description omits a number of known structures and devices. This omission is not to be construed as a limitation of the scopes of the claims. Specific details are set forth to provide an understanding of the present disclosure. It should however be appreciated that the present disclosure may be practiced in a variety of ways beyond the specific detail set forth herein.
[0093] Furthermore, while the exemplary aspects, embodiments, and/or configurations illustrated herein show the various components of the system collocated, certain components of the system can be located remotely, at distant portions of a distributed network, such as a LAN and/or the Internet, or within a dedicated system. Thus, it should be appreciated, that the components of the system can be combined in to one or more devices or collocated on a particular node of a distributed network, such as an analog and/or digital telecommunications network, a packet-switch network, or a circuit-switched network. It will be appreciated from the preceding description, and for reasons of computational efficiency, that the components of the system can be arranged at any location within a distributed network of components without affecting the operation of the system. For example, the various components can be located in a switch such as a PBX and media server, gateway, in one or more communications devices, at one or more users' premises, or some combination thereof. Similarly, one or more functional portions of the system could be distributed between a telecommunications device(s) and an associated computing device.
[0094] Furthermore, it should be appreciated that the various links connecting the elements can be wired or wireless links, or any combination thereof, or any other known or later developed element(s) that is capable of supplying and/or communicating data to and from the connected elements. These wired or wireless links can also be secure links and may be capable of communicating encrypted information. Transmission media used as links, for example, can be any suitable carrier for electrical signals, including coaxial cables, copper wire and fiber optics, and may take the form of acoustic or light waves, such as those generated during radio-wave and infra-red data communications.
[0095] Also, while the flowcharts have been discussed and illustrated in relation to a particular sequence of events, it should be appreciated that changes, additions, and omissions to this sequence can occur without materially affecting the operation of the disclosed embodiments, configuration, and aspects.
[0096] A number of variations and modifications of the disclosure can be used. It would be possible to provide for some features of the disclosure without providing others.
[0097] In yet another embodiment, the systems and methods of this disclosure can be implemented in conjunction with a special purpose computer, a programmed microprocessor or microcontroller and peripheral integrated circuit element(s), an ASIC or other integrated circuit, a digital signal processor, a hard-wired electronic or logic circuit such as discrete element circuit, a programmable logic device or gate array such as PLD, PLA, FPGA, PAL, special purpose computer, any comparable means, or the like. In general, any device(s) or means capable of implementing the methodology illustrated herein can be used to implement the various aspects of this disclosure. Exemplary hardware that can be used for the disclosed embodiments, configurations and aspects includes computers, handheld devices, telephones (e.g., cellular, Internet enabled, digital, analog, hybrids, and others), and other hardware known in the art. Some of these devices include processors (e.g., a single or multiple microprocessors), memory, nonvolatile storage, input devices, and output devices. Furthermore, alternative software implementations including, but not limited to, distributed processing or component/object distributed processing, parallel processing, or virtual machine processing can also be constructed to implement the methods described herein.
[0098] In yet another embodiment, the disclosed methods may be readily implemented in conjunction with software using object or object-oriented software development environments that provide portable source code that can be used on a variety of computer or workstation platforms. Alternatively, the disclosed system may be implemented partially or fully in hardware using standard logic circuits or VLSI design. Whether software or hardware is used to implement the systems in accordance with this disclosure is dependent on the speed and/or efficiency requirements of the system, the particular function, and the particular software or hardware systems or microprocessor or microcomputer systems being utilized.
[0099] In yet another embodiment, the disclosed methods may be partially implemented in software that can be stored on a storage medium, executed on programmed general-purpose computer with the cooperation of a controller and memory, a special purpose computer, a microprocessor, or the like. In these instances, the systems and methods of this disclosure can be implemented as program embedded on personal computer such as an applet, JAVA or CGI script, as a resource residing on a server or computer workstation, as a routine embedded in a dedicated measurement system, system component, or the like. The system can also be implemented by physically incorporating the system and/or method into a software and/or hardware system.
[0100] Although the present disclosure describes components and functions implemented in the aspects, embodiments, and/or configurations with reference to particular standards and protocols, the aspects, embodiments, and/or configurations are not limited to such standards and protocols. Other similar standards and protocols not mentioned herein are in existence and are considered to be included in the present disclosure. Moreover, the standards and protocols mentioned herein, and other similar standards and protocols not mentioned herein are periodically superseded by faster or more effective equivalents having essentially the same functions. Such replacement standards and protocols having the same functions are considered equivalents included in the present disclosure.
[0101] The present disclosure, in various aspects, embodiments, and/or configurations, includes components, methods, processes, systems and/or apparatus substantially as depicted and described herein, including various aspects, embodiments, configurations embodiments, sub-combinations, and/or subsets thereof. Those of skill in the art will understand how to make and use the disclosed aspects, embodiments, and/or configurations after understanding the present disclosure. The present disclosure, in various aspects, embodiments, and/or configurations, includes providing devices and processes in the absence of items not depicted and/or described herein or in various aspects, embodiments, and/or configurations hereof, including in the absence of such items as may have been used in previous devices or processes, e.g., for improving performance, achieving ease and\or reducing cost of implementation.
[0102] The foregoing discussion has been presented for purposes of illustration and description. The foregoing is not intended to limit the disclosure to the form or forms disclosed herein. In the foregoing Detailed Description for example, various features of the disclosure are grouped together in one or more aspects, embodiments, and/or configurations for the purpose of streamlining the disclosure. The features of the aspects, embodiments, and/or configurations of the disclosure may be combined in alternate aspects, embodiments, and/or configurations other than those discussed above. This method of disclosure is not to be interpreted as reflecting an intention that the claims require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed aspect, embodiment, and/or configuration. Thus, the following claims are hereby incorporated into this Detailed Description, with each claim standing on its own as a separate preferred embodiment of the disclosure.
[0103] Moreover, though the description has included description of one or more aspects, embodiments, and/or configurations and certain variations and modifications, other variations, combinations, and modifications are within the scope of the disclosure, e.g., as may be within the skill and knowledge of those in the art, after understanding the present disclosure. It is intended to obtain rights which include alternative aspects, embodiments, and/or configurations to the extent permitted, including alternate, interchangeable and/or equivalent structures, functions, ranges or steps to those claimed, whether or not such alternate, interchangeable and/or equivalent structures, functions, ranges or steps are disclosed herein, and without intending to publicly dedicate any patentable subject matter.