IEEE

Implementation of an emitting LED circuit in a Visible Light communications positioning system

Abstract: In this paper, two LED emitting circuits are implemented in a VLC positioning system, a regular Bias-Tee and a circuit proposed by Ghassemlooy, aiming to provide the system with portability ...
IEEE

A New Current Mirror Balancing Circuit for AC-LED Lighting

Abstract: This paper proposes a new current balancing method for alternating current (AC) - light emitting diodes (LED). The proposed method uses the bi-directional current mirror circuit with ...
Orlando Sentinel

Sierra Space Dream Chaser’s landing chops tested at high speed down KSC runway

Contrary to appearances, the vehicle that looked like a little space shuttle was not broken down when it was being hauled down the runway at Kennedy Space Center. Sierra Space’s Dream Chaser ...
SpaceNews

Dream Chaser completes key tests ahead of first flight

Sierra Space performed tow tests of its Dream Chaser spaceplane at the former shuttle runway at the Kennedy Space Center. Credit: Sierra Space WASHINGTON — Sierra Space has completed key testing ...
Business Wire

Sierra Space’s Dream Chaser® Spaceplane Successfully Completes Critical Pre-flight Milestones

LOUISVILLE, Colo.--(BUSINESS WIRE)--Sierra Space, a proven Defense Tech company delivering solutions for the nation’s most critical missions and advancing the future of security in space, announced ...