Vertical take-off and landing aircraft
First Claim
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1. A vertical takeoff and landing aircraft comprising a plurality of lift and thrust rotors each with its own respective electric motor as a drive wherein each electric motor has its own respective frequency converter connected upstream thereof and wherein the frequency converters are connected to dc systems for supplying power to the frequency converters which are supplied by a respective internal combustion engine with a generator and can be connected together.
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Abstract
The invention concerns a vertical take-off and landing aircraft (10) with a plurality of lift (26a-26p) and thrust rotors (20a,20b), in which all rotors have their own electric motor (48a-48p,50a,50b) as a drive.
143 Citations
11 Claims
- 1. A vertical takeoff and landing aircraft comprising a plurality of lift and thrust rotors each with its own respective electric motor as a drive wherein each electric motor has its own respective frequency converter connected upstream thereof and wherein the frequency converters are connected to dc systems for supplying power to the frequency converters which are supplied by a respective internal combustion engine with a generator and can be connected together.
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5. A vertical take-off and landing aircraft comprising:
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at least one internal combustion engine;
at least one polyphase electric current generator driven by each internal combustion engine;
at least one rectifier connected to each polyphase current generator for converting the polyphase current to direct current;
at least one direct current power distribution network, wherein the network receives current from the rectifier for distribution;
a plurality of single blade lift rotors and multi-blade thrust rotors;
one electric motor directly coupled to each of the lift and thrust rotors;
one frequency converter directly coupled to each electric motor, wherein each frequency converter controls the speed of its respective motor; and
the direct current power distribution networks supplying current to each electric motor via the frequency converters. - View Dependent Claims (6)
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7. A vertical take-off and landing aircraft comprising:
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two direct current power sources, each source comprising;
an internal combustion engine;
a polyphase current generator driven by the internal combustion engine;
a rectifier connected to the generator for converting polyphase current to direct current;
two direct current distribution networks, each network receiving power from one of the direct current power sources;
the distribution networks being switchable between the power sources, wherein if one power source fails both distribution networks may be driven by the remaining power source;
each distribution network driving a plurality of electric motors, via frequency converters;
each electric motor being directly coupled to a rotor. - View Dependent Claims (8, 9, 10, 11)
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Specification