Method and system for measuring relative velocity between a vehicle and the surrounding atmosphere
OwnerCarl Tyréninventor
Life of this patent
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Abstract
A method and system for measuring a vehicle airspeed, wherein a nuclear magnetic resonance, NMR, measurement method is used for obtaining relative velocity between the vehicle and an atmosphere surrounding the vehicle. A groove is arranged at the outside body of an aircraft and the surrounding atmosphere is allowed to pass inside the groove. A strong magnet system establishes a magnetic field with a gradient in the flow direction. The atoms passing inside the groove is exposed to an electromagnetic radiation whereby the atoms oscillate at a Lamor frequency, which is proportional to the strong magnetic field. The change in Lamor frequency along the groove is measured and is proportional to the airspeed.
Claims13
A method of measuring a vehicle airspeed, wherein a nuclear magnetic resonance, NMR, measurement method is used for obtaining relative velocity between the vehicle and an atmosphere surrounding the vehicle.
A system for measuring a vehicle airspeed, comprising a nuclear magnetic resonance, NMR, system for obtaining relative velocity between the vehicle and an atmosphere surrounding the vehicle.
(canceled)
A method of analyzing the surrounding atmosphere of a vehicle of occurrence of substances, comprising the following step:
- a) establishing a magnetic field gradient in an area in which the atmosphere is passing the vehicle;
- b) exposing atoms passing in said magnetic field gradient for electromagnetic radiation resulting in that the atoms oscillates at a Lamor frequency, which is proportional to the magnetic field;
- c) measuring Larmor frequency changes in said magnetic field gradient;
- d) analyzing the Larmor frequency changes for analyzing substances present in the surrounding atmosphere.
Dependencies are inferred from the claim text.