FR2377936A1 - External illumination system for helicopters - uses optical blocks on rotor blade tips to reflect and refract light from source at blade root - Google Patents
External illumination system for helicopters - uses optical blocks on rotor blade tips to reflect and refract light from source at blade rootInfo
- Publication number
- FR2377936A1 FR2377936A1 FR7701380A FR7701380A FR2377936A1 FR 2377936 A1 FR2377936 A1 FR 2377936A1 FR 7701380 A FR7701380 A FR 7701380A FR 7701380 A FR7701380 A FR 7701380A FR 2377936 A1 FR2377936 A1 FR 2377936A1
- Authority
- FR
- France
- Prior art keywords
- illumination system
- external illumination
- helicopters
- reflect
- source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title abstract 3
- 238000005286 illumination Methods 0.000 title abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D47/00—Equipment not otherwise provided for
- B64D47/02—Arrangements or adaptations of signal or lighting devices
- B64D47/06—Arrangements or adaptations of signal or lighting devices for indicating aircraft presence
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Toys (AREA)
Abstract
An external illumination system for a helicopter during night flying uses a lamp (1), mounted near the blade root. The lamp (1) is supplied with current through a flexible cable (5) from the aircraft generator. The lamp (1) projects a beam of light onto an optical block (2) mounted near the blade tip. The optical block reflects light towards the fuselage so that it is visible to the pilot. It also refracts the light outwards so that it is visible to pilots of other aircraft flying in formation. The reflected light also illuminates fluorescent areas (3) on the blade surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7701380A FR2377936A1 (en) | 1977-01-19 | 1977-01-19 | External illumination system for helicopters - uses optical blocks on rotor blade tips to reflect and refract light from source at blade root |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7701380A FR2377936A1 (en) | 1977-01-19 | 1977-01-19 | External illumination system for helicopters - uses optical blocks on rotor blade tips to reflect and refract light from source at blade root |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2377936A1 true FR2377936A1 (en) | 1978-08-18 |
FR2377936B1 FR2377936B1 (en) | 1980-02-22 |
Family
ID=9185650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7701380A Granted FR2377936A1 (en) | 1977-01-19 | 1977-01-19 | External illumination system for helicopters - uses optical blocks on rotor blade tips to reflect and refract light from source at blade root |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2377936A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0298141A1 (en) * | 1987-07-06 | 1989-01-11 | The Boeing Company | Aircraft tanker trailing edge lights |
EP1540239A2 (en) * | 2002-07-22 | 2005-06-15 | Noesis Inc | Low light level illumination for rotating objects |
FR2991968A1 (en) * | 2012-06-18 | 2013-12-20 | Serge Bernicat | Blade rotor for use in e.g. helicopter, has specific areas whose surface is divided into two parts that are colored by two colors, where wavelength of one of colors is equal to wavelength of end portion of visible spectrum or black |
WO2015090354A1 (en) * | 2013-12-16 | 2015-06-25 | Bernicat Serge | Rotor with tinted blades |
US20160280368A1 (en) * | 2015-03-27 | 2016-09-29 | Goodrich Lighting Systems Gmbh | Layer material for arranging on a rotor blade tip of a helicopter, helicopter light system, and helicopter comprising the same |
-
1977
- 1977-01-19 FR FR7701380A patent/FR2377936A1/en active Granted
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0298141A1 (en) * | 1987-07-06 | 1989-01-11 | The Boeing Company | Aircraft tanker trailing edge lights |
EP1540239A2 (en) * | 2002-07-22 | 2005-06-15 | Noesis Inc | Low light level illumination for rotating objects |
JP2010052732A (en) * | 2002-07-22 | 2010-03-11 | Defense Holdings Inc | Low light level illumination for rotating objects |
EP1540239A4 (en) * | 2002-07-22 | 2010-12-15 | Defense Holdings Inc | Low light level illumination for rotating objects |
FR2991968A1 (en) * | 2012-06-18 | 2013-12-20 | Serge Bernicat | Blade rotor for use in e.g. helicopter, has specific areas whose surface is divided into two parts that are colored by two colors, where wavelength of one of colors is equal to wavelength of end portion of visible spectrum or black |
WO2015090354A1 (en) * | 2013-12-16 | 2015-06-25 | Bernicat Serge | Rotor with tinted blades |
US20160280368A1 (en) * | 2015-03-27 | 2016-09-29 | Goodrich Lighting Systems Gmbh | Layer material for arranging on a rotor blade tip of a helicopter, helicopter light system, and helicopter comprising the same |
US10053214B2 (en) * | 2015-03-27 | 2018-08-21 | Goodrich Lighting Systems Gmbh | Layer material for arranging on a rotor blade tip of a helicopter, helicopter light system, and helicopter comprising the same |
Also Published As
Publication number | Publication date |
---|---|
FR2377936B1 (en) | 1980-02-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |