1. An electric taxi predictive performance system, comprising:
a vehicle;
an electric based taxi system for taxiing the vehicle; and
a processor configured to:
determine if environmental data is known,
receive environmental data if environmental data is known,
determine a predicted electric based taxi performance based on the environmental data if the environmental data is determined to be available, or based on worst case data if the environmental data is determined to not be available, and
provide the predicted electric based taxi performance for display.
2. The system of claim 1, wherein the predicted electric based taxi performance includes a predicted taxi speed of the vehicle.
3. The system of claim 2, wherein the predicted taxi speed of the vehicle is a maximum speed available.
4. The system of claim 1, wherein the vehicle is an aircraft.
5. The system of claim 4, wherein the environmental data includes data corresponding to the aircraft.
6. The system of claim 5, wherein the environmental data includes data corresponding to an airport where the aircraft is taxiing.
7. The system of claim 6, wherein the predicted electric based taxi performance includes a time to cross a section of airport runway or taxi intersection.
8. A computer program product stored on a non-transitory computer readable medium including instructions executable by a processing unit to:
receive an aircraft performance model, wherein the aircraft performance model is representative of known performance of the aircraft,
receive aircraft related environmental data,
determine a predicted electric based taxi performance of an aircraft based on the aircraft related environmental data and the performance model for the aircraft, and
generate a control signal based on the predicted electric based taxi performance.
9. The computer program product of claim 8, including instructions executable by a processor to provide a recommended taxi speed.
10. The computer program product of claim 8, including instructions executable by a processor to provide a maximum available electric based taxi speed.
11. The computer program product of claim 8, including instructions executable by a processor to provide a recommended electric based taxi deceleration.
12. The computer program product of claim 8, wherein the aircraft related environmental data includes data corresponding to an airport where the aircraft is taxiing.
13. The computer program product of claim 12, wherein the predicted electric based taxi performance includes a time to cross a section of airport runway.
14. The computer program product of claim 8, including instructions executable by a processor to provide a distance reached in a preset time.
15. The computer program product of claim 8, including instructions executable by a processor to provide a distance reached under a maximum available power.
16. The computer program product of claim 8, wherein the predicted electric based taxi performance is displayed on the aircraft.
17. A method of generating electric based taxing performance, comprises:
receiving real-time data related to an aircraft,
determining an initial predicted electric based taxi performance of the aircraft based on a first instance of the real-time data,
determine an updated predicted electric based taxi performance of the aircraft based on the initial predicted electric based taxi performance of the aircraft and further based on a second instance of the real-time data, and
generating a display based on the predicted electric based taxi performance.
18. The method of claim 17, adjusting the predicted electric based taxi performance based on currently available performance limits of the aircraft.
19. The method of claim 18, wherein the currently available performance limits include a maximum available taxi speed of the aircraft.
20. The method of claim 17, wherein the predicted electric based taxi performance is based on at least a weight of the aircraft and a power output available from an electric power source of the aircraft.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An optical isolator comprising:
a waveguide on a substrate, the waveguide being dimensioned to operate in a single mode for a selected frequency range and the waveguide further being structured such that, given magneto-optical properties of the waveguide’s material, the waveguide has a cutoff frequency in a forward propagation direction that is different than a cutoff frequency in a reverse propagation direction.
2. The optical isolator of claim 1 wherein:
the waveguide includes first and second portions;
one of the first and second waveguide portions comprises a magnetic material and;
the other of the first and second waveguide portions comprises a non-magnetic material.
3. The optical isolator of claim 2 wherein the non-magnetic material is a same material as a material of the substrate.
4. The optical isolator of claim 2 wherein the non-magnetic material is a different material than a material of the substrate.
5. The optical isolator of claim 2 wherein the first and second waveguide portions are arranged side-by-side on the substrate.
6. The optical isolator of claim 2 wherein the first waveguide portion is on the substrate and the second waveguide portion is on the first waveguide portion.
7. A method of propagating optical energy, the method comprising:
introducing the optical energy into a wave guide, the waveguide being dimensioned to operate in a single mode for a selected frequency range and the waveguide further being structured such that, given magneto-optical properties of the waveguide’s material, the waveguide has a cutoff frequency in a forward propagation direction that is different than a cutoff frequency in a reverse propagation direction.
8. The method of claim 7 wherein:
the waveguide includes first and second portions;
one of the first and second waveguide portions comprises a magnetic material and;
the other of the first and second waveguide portions comprises a non-magnetic material.
9. The method of claim 8 wherein the non-magnetic material is a same material as a material of a substrate on which the waveguide is located.
10. The method of claim 8 wherein the non-magnetic material is a different material than a material of a substrate on which the waveguide is located.
11. The method of claim 8 wherein the first and second waveguide portions are arranged side-by-side on a substrate.
12. The method of claim 8 wherein the first waveguide portion is on a substrate and the second waveguide portion is on the first waveguide portion.