Airborne optical sighting device moving at high speed
AssigneesThomson-CSF, Office National d'Etudes et al Recherches Aerospatiales (Onera)
InventorsFrancois Dufresne de Virel, Michel Poliet, Gerard Laruelle, Jacques Coste, Claude Sans
Life of this patent
Estimating the term…
Abstract
The optical sighting device makes it possible to increase the quality of ical transmission by preventing turbulences from forming in the field of vision at high speed, by means of an airstream-deflecting device which is mounted in the turbulence formation zone and which has a profile in the form of a stem-post to dispel the air-streams laterally. In the case of transparent plane wall via which vision takes place in this zone, the deflecting device can consist of an attached plates which is connected to or located in the vicinity of the wall.
Claims13
An optical sighting device adapted to be fastened under the fuselage of an aircraft comprising:
- a plurality of transparent walls extending in longitudinal and lateral zones, to allow optical sighting in a desired effective field, the said field among other things extending underneath and towards the rear of the aircraft, and means for eliminating the effects on optical sighting and image perception of the disturbances generated by turbulences present in a limiting layer along the said transparent walls during movement at high speed, the said means comprising an airstream-deflecting device with a piece made of a radiation transparent material and in the form of a stem-post towards the front, so as to ensure the lateral shedding of the airstreams during longitudinal movement and thereby at least reduce the said limiting layer.
Dependencies are inferred from the claim text.