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A drive device for an aircraft comprises a gas turbine apparatus for generating a first drive energy and electric motor for generating a second drive energy. The gas turbine apparatus and the electric motor are set up in such a way that the drive unit may be provided with at least one of the first d

A drive device for an aircraft comprises a gas turbine apparatus for generating a first drive energy and electric motor for generating a second drive energy. The gas turbine apparatus and the electric motor are set up in such a way that the drive unit may be provided with at least one of the first drive energy and the second drive energy. The drive unit is set up to generate propulsion using at least one of the first drive energy and the second drive energy.

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1. A method for driving an aircraft comprising: generating a first drive energy using a gas turbine apparatus;generating a second drive energy using an electric motor;generating injection water and electrical energy by a fuel-cell system by using a hydrogen-containing fuel and an oxidant;providing t

1. A method for driving an aircraft comprising: generating a first drive energy using a gas turbine apparatus;generating a second drive energy using an electric motor;generating injection water and electrical energy by a fuel-cell system by using a hydrogen-containing fuel and an oxidant;providing the injection water to a condenser;providing the electrical energy to the electric motor;injecting the injection water from the condenser into a combustion process in a combustion chamber of the gas turbine apparatus;providing at least one of the first drive energy and the second drive energy to a drive unit via a first drive shaft of one of the gas turbine apparatus and the electric motor selectively coupled to the drive unit;selectively providing the other of the first drive energy and the second drive energy via a second drive shaft of the other of the gas turbine apparatus and the electric motor selectively coupled to the first drive shaft via a first clutch apparatus; andgenerating propulsion using the drive unit. 2. An aircraft having a drive device, the drive device comprising: a drive unit;a gas turbine apparatus for generating a first drive energy, the gas turbine apparatus having a gas turbine shaft selectively coupled to the drive unit;an electric motor for generating a second drive energy;a first clutch apparatus;a water injection apparatus; a fuel-cell system; anda condenser;wherein the electric motor is configured to be selectively coupled to the gas turbine shaft via the first clutch apparatus,wherein the gas turbine apparatus and the electric motor are adapted for providing the drive unit with at least one of the first drive energy and the second drive energy;wherein the drive unit is adapted for generating propulsion using at least one of the first drive energy and the second drive energy;wherein the fuel-cell system is adapted for generating injection water and electrical energy by using a hydrogen-containing fuel and an oxidant;wherein the fuel-cell system is adapted for providing electrical energy to the electric motor;wherein the fuel-cell is adapted for providing the injection water to the condenser;wherein the gas turbine apparatus comprises a combustion chamber with a combustion process; andwherein the water injection apparatus is adapted for injecting injection water, provided by the fuel-cell system to the condenser, into the combustion process. 3. The aircraft of claim 2, wherein the injection water is provided from one of a separate tank and from industrial water. 4. The aircraft of claim 2, wherein the hydrogen-containing fuel is selected from the group consisting of pure hydrogen and hydrogen-containing reformate gas. 5. The aircraft of claim 2, wherein the oxidant is selected from the group consisting of cabin air, outside air, and pure oxygen. 6. The aircraft of claim 2, wherein the fuel-cell system is selected from the group consisting of high-temperature fuel cells, moderate-temperature fuel cells, and low-temperature fuel cells.