Description
UAV has been design with Stirling Engine which is operated by fuel gel. It is
compressed fuel which has high density and small quantity of fuel gel able to
burn in 02-03 hour easily. Fuel gel is low weight and basic-problem with UAV
Drones is limitation of load carry capacity.
UAV Drone are basically operated by Batteries and having capacity of flying
start from 12 minutes to 30 minutes maximum. That drone has to land before
battery ends and change the battery and fly it again.
Our Present innovation technology is provide limit less fly capacity to UAV & Drone because it is running by fuel gel withl3- ounce cans that run 02-03 hours. The weight of fuel if less than UAV Drone can fly more distance and cover more area.

4. DESCRIPTION (Description shall start from next stage)
Brief of Invention :
Working Principal of Stirling Engine:
The basic principal of Stirling Hnginc is a heat engine (hat operates bv cvclic compression and expansion of air at Running temperature; This is the principal of net conversion of heat energy to mechanical work. Stirling engines can work on anv heat source like flame, Thermal, solar or Sun Rays. Stirling engine is operating in a closed-cycle regenerative heat engine with attached iuel gas or other source of heat generation.
Closed-cvcle meaning is thermodynamic system in which the working fluid is permanently contained within the system, and regenerative describes the use of a specific type of internal heat exchanger and thermal store, known as the regenerator. It could be understand as like Hot air engine.
Stirling engine built in the class operates with a hoi temperature. Small Stirling engine produce 1 W at 400 Rpm. Medium engine. Produce between 1200 Rpm and In our present Innovated technology we have design two piston Stirling engines which has operating speed range is from 2000 to 5000 RPM.
Also The thermal limit for the operation of a Stirling engine depends on the material used for its construction. In most instances, the engines operate with a heater and cooler temperature of 923 and 338 K, respectively. Engine efficiency ranges from about 30 to 40% resulting from a typical temperarure range of 923—1073 K.
Stirling Engine design as Commercial engines is relatively small. Typical electrical generating capacities are between 1 and 25 kW. While these engines potentially have a range of applications, they are often expensive to build and have rarely been used in commercial'power generating system.
Background of the Invention:
Stirling Engine is design to convert heat energ\ lo cold energy which compressed in the colder pprdon of engine and expanded hotter portion which result conversion of heal into mechanical work. In comparison with hot air engine it loose heat energy which internal regenerative heat exchanger increases the Stirling engine's thermal efficiency. It is the best quality of Stirling Engine.
Field of the invention :
Stirling engine parts and attachments:
1. Hot cylinder wall
2. Cold cylinder wall
3. Coolant inlet and outlet pipes
4. Thermal insulation separating the two cylinder ends
5. Displacer piston
6. Power piston
7. Piston shaft and Other attachments
8. Heat sinks
9. Connected tubes

10. Fuel gas chamber
11. Fuel gas- storage tanks
12. Fire Safety features with fire safety equipments
13. Heat controller
14. Heat Monitor Measuring Equipments
15. Linkage crank and flywheels
16. etc
Heat Control system :
Stirling engine operation is depending with heat generation so it is required to be installed heat controlling & measuring equipments. The heat driving a Stirling engine must be transmitted from a heat source to the working fluid by heat exchangers and finally to a heat sink. 'The operation of Stirling engine system is by one heat source, one heat sink and up to five heat exchangers. Heat sink.* to be add as per the engine design and heat temperature. Heat controlling equipments are design as per the size and capacity of Stirling engine. Solar operated and sun raws operated Stirling engine require less number of heat sinks but fire and electric operated Stirling engine requires more heat sink and controlling equipments.
Detailed description of the invention :
Principal ;
The Stirling engine works on heating that heai irom any gas burning, electricity. Solar or Sun Rays. Ii
uses a working flame source like fuel gel, which is housed in a sealed environment. When heated by
the gel based fueled burner, the gas expands causing a piston to move and interact with a linear
alternator to produce electricity. As the gas cools and contracts, the process resets before repeating
again.
Fuel Gel
Fuel gel made with isopropyl alcohol by using basic raw materials like sodium stearate, carbopol and other required material. Fuel Gel has good capacity of burning like it's 13-ouncc cans burn for about two to three hours continuously. It is safe to.use and not burn immediareh- or blast. Methanol based Fuel gel cans create a high and consistent heat output. It Burns up to two hours and produce a ■ maximum temperature of 175 degrees Fahrenheit. It is usable indoor and outdoor burning purpose. During rainy time if fuel gel is not wet it can burn easily. It is pollution free and odour less. Gel fuel does not smoke or create soot when burned.
Both ethanol and methanol based Fuel Gel have low flash points, 11- 17 °C, making them highly flammable; diethylene glycol, with a flash point of 154 °(], is considered safer.
Summary of Invention :
Comparison of our innovated technology with existing technologies : Solar Operated Drone / UAV Technology:
• Solar operated drones are depending with stored battery power. Solar-powered aircraft that needs to fly throughout the night on stored energy. Solar Powered aircraft has solar cells to convert sunlight to electricity, and storing this in rechargeable batteries, In our present innovation UAV Drone is using a thermal battery that stores heat in order to drive its Stirling engine.

• Stirling engine is also operated by sun Light during the day time continuously without any stop or landing for batter)7 change as it use sunlight 10 heat a mix of lithium and lithium hydride and a moving parabolic mirror will keep track ot the Sun to focus its rays on the thermal store or Stirling heat pipe. Sun rays provide the heiu io Stirling engine heat tube ii will run automatically' without any break.
• .Internal heat combustion engine like diesel engine vs. Stirling Kngme :
Stirling Engine is store heat energy arid converts into mechanical work it is not as like internal combustion engine. During working operation period Stirling engines is not losing any heat and it utilise combustion heat 100% and provides it's lull efficiency. When we compare Staling engine with heat combustion engine rhen we found that During internal combustion, temperatures achieve' around 1500C-160OC for a short period of rime, resulting in greater mean heat supply temperature oi the thermodynamic cycle than :mv Stirling engine could achieve. Ii is nui possible io supply heat at temperatures that high by conduction, as it is done in Stirling engines because no material could conduct heat from combustion in that high temperature without huge heat losses and problems related to heat deformation of materials. Stirling engines are capable of quiet operation and can use almost any heat source. The heat energy source is generated external to the Stirling engine rather than by internal combustion as with the Diesel cycle engines. Because the Stirling engine is compatible with alternative and renewable energy sources
Brief Description of the Drawings :
Drawing 1 :
In the given drawing all parts are describe with their name and usage as Stirling engine works on heating that heat from any gas burning, electuary. Solar or Sun Rays. It uses a working flame source like fuel gel, which is housed in a sealed environment. When heated by the gel based fueled burner, the gas expands causing a piston to move and interact with a linear alternator to produce electricity. As the gas cools and contracts, the process resets bciorc repeating again.
Drawing 2 ;
In The given Drawing Prototype model of surling engine with electric bulb which is lighting from Stirling engine's power. This is the basic design of surling engine which is able to produce electricity.
Drawing 3:
In the given drawing number 3 fuel part is showing how fuel support to Stirling engine to produce high power of electricity.
Drawing 4 :
In the given UAV Engine parts are described and the function of parts is explained.
Drawing 5 :
UAV prototype model design

CLAIMS

1. The Present invention is UAV drone having Stirling engine which is gel fuel operated
2. The process of Claim 1 wherein said that UAV powered by fuel gel so it continuous fly without any break or landing for battery change
3. The process of claim 1 wherein said that UAV can be operated by any source of energy like sun rays, solar, electrical and fuel.
4. The process of claim 1 wherein said that UAV drone engine is Stirling engine having 02 piston for double performance
5. The process of claim 1 wherein said that it is more efficient and safer than a comparable steam engine.
6. The process of claim 1 wherein said that UAV is operated with low weight fuel so it can fly more time and cover more distance and carry more load.
7. The process of claim 1 wherein said that UAV is power-to-weight for heavy fuel application and It perform in same cold climate to -30°C
8. The process of claim 1 wherein said that UAV is Fuel efficient - It save more than 40% fuel than conventional engine
9. The process of claim 1 wherein said that UAV Drone is Lowest cost flight operation, air time in very minimum with low maintenance.