Maryland's Defense Patent Database

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Navigational indicating system for rotary wing aircraft

Patent image
NSWCCD

Red, green and white colored lights are emitted from navigation orientation indicating light emitting devices mounted within a helicopter rotor blade near its tip. The light emissions from such devices are under control to respectively indicate passage of the rotor blade through limited arcuate portions of the travel path of the rotor blade end tip. Operational control over the light emitting devices is effected by data processing of outputs from air-speed responsive sensors on the blade end tip.

Inventors: 
Milgram, Judah H.
Patent Number: 
Technical domain: 
Handling and Transportation
FIle Date: 
2005-11-22
Grant Date: 
2008-01-29
Grant time: 
798 days
Grant time percentile rank: 
14
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY