초록 ▼

A flight control device for an aircraft, in particular for a helicopter, includes, in addition to a control member and an actuator of a controlled member, a determination unit for determining a control command which corresponds to a translational rate control command, dependent on the deflection of

A flight control device for an aircraft, in particular for a helicopter, includes, in addition to a control member and an actuator of a controlled member, a determination unit for determining a control command which corresponds to a translational rate control command, dependent on the deflection of the control member, while the translational rate of the aircraft is less than a reference value and which corresponds otherwise to a translational acceleration or angular rate control command, dependent on an extra deflection of the control member.

대표청구항 ▼

A flight control device for an aircraft, in particular for a helicopter, includes, in addition to a control member and an actuator of a controlled member, a determination unit for determining a control command which corresponds to a translational rate control command, dependent on the deflection of

A flight control device for an aircraft, in particular for a helicopter, includes, in addition to a control member and an actuator of a controlled member, a determination unit for determining a control command which corresponds to a translational rate control command, dependent on the deflection of the control member, while the translational rate of the aircraft is less than a reference value and which corresponds otherwise to a translational acceleration or angular rate control command, dependent on an extra deflection of the control member. posed to diffuse the light emitted by the source of light. 30. The system of claim 29, wherein said light diffuser is a lens disposed to diffuse the light emitted by the source of light. 31. A method for providing light of a desired wavelength, several discrete wavelengths or waveband to an internal treatment site to effect a photodynamic therapy, comprising: (a) providing a miniature light source which comprises: (i) a source of light that produces light of a desired wavelength, several discrete wavelengths or waveband when energized by an electrical current; (ii) an energy storage device operably coupled via an electrical circuit to said source of light; (iii) a switch operably coupled to said electrical circuit and said energy storage device; and (iv) an acoustic transducer coupled to said switch, said acoustic transducer being activatable upon acoustic excitation by an external acoustic energy source for closing the switch to allow current flow from said energy storage device to said source of light; (b) implanting said miniature light source at the internal treatment site of a subject in need thereof; and (c) activating said acoustic transducer via said external acoustic energy source, thereby providing the light of the desired wavelength, several discrete wavelengths or waveband to the internal treatment site to effect the photodynamic therapy. 32. The method of claim 31, wherein the miniature light source is preprogrammed to shut off a predetermined time period following its activation. 33. The method of claim 31, wherein the miniature light source shuts off following a reception of an external shut off signal. 34. The method of claim 31, further comprising administering to the subject a therapeutically effective amount of a photodynamic therapy agent. 35. The method of claim 31, wherein the acoustic transducer is configured for receiving a first acoustic excitation signal and a second acoustic excitation signal, the switch being closed when the first acoustic excitation signal is received by the acoustic transducer, and the switch being opened when the second acoustic excitation signal is received by the acoustic transducer for discontinuing current flow from the energy storage device to the electrical circuit. 36. The method of claim 31, wherein the acoustic transducer comprises: a cell member having a cavity; a substantially flexible piezoelectric layer attached to the cell member, the piezoelectric layer having an external surface and an internal surface, the piezoelectric layer having predetermined dimensions for enabling fluctuations at its resonance frequency upon impinging of an external acoustic wave; and a first electrode attached to the external surface and a second electrode attached to the internal surface. 37. The method of claim 31, wherein the energy storage device comprises a battery. 38. The method of claim 31, wherein the miniature light source is designed and operable to generate light pulses. 39. The method of claim 37, wherein the battery is a lithium battery. 40. The method of claim 31, wherein the energy storage device comprises a rechargeable device, the rechargeable device being rechargeable by a device external to the body. 41. The method of claim 31, wherein the miniature light source further comprises a biocompatible, light transmitting, acoustic energy transmitting, material that encloses said source of light, said energy storage device, said electrical circuit, said switch and said acoustic transducer, to form a bead, said bead being thus adapted for insertion into the internal treatment site to effect the photodynamic therapy by providing light to the treatment site. 42. The method of claim 41, wherein the bead is generally spherical