HARMONIC INC.

THE CONTRACTOR WILL DESIGN, FABRICATE, AND TEST STATE-OF-THE-ART NARROW-BANDWIDTH BANDWIDTH HPAS WITH HIGH EFFICIENCY AND HARMONIC REJECTION, DOUBLE-BALANCED MIXERS, AND PHEMT-BASED LNAS WITH IMPROVED PHASED NOISE PERFORMANCE.

IGF::OT::IGF THE CONTRACTOR WILL TO DEVELOP A HIGH-POWER SINGLE FREQUENCY SINGLE TRANSVERSE-MODE OPTICALLY PUMPED (OP) VERTICAL EXTERNAL CAVITY SURFACE EMITTING LASER (VECSEL) WITH INTRA-CAVITY HARMONIC GENERATION USING NON-LINEAR CRYSTAL(S) TO GENERATE A DUV (DEEP UV) WAVELENGTH IN THE 220-240 NM REGION.

SCIENCE-RELATED COMMUNICATION SERVICES - SUPPORT FOR CPO, DON, AND USAF

WAVELENGTH-AGILE REAL TIME TABLETOP X-RAY NANOSCOPE BASED ON HIGH HARMONIC BEAMS

HARMONIC MEDIA PORT MODULE

THE OBJECTIVE OF THIS WORK IS TO DEVELOP AND DEMONSTRATE AN APPROACH FOR ACTIVE VIBRATION REDUCTION ON A ROTORCRAFT STRUCTURE THAT WILL ULTIMATELY REDUCE NOISE IN THE PASSENGER CABIN OF THE ROTORCRAFT. THE ACTIVE CONTROL APPROACH TO BE DEVELOPED AND DEMONSTRATED IN THIS WORK IS BASED ON THE CONCEPT OF ACTUATION POWER MINIMIZATION. THIS IS A DECENTRALIZED CONTROL CONCEPT, MEANING ALL SENSING, CONTROL INPUT CALCULATION, AND ACTUATION IS DONE LOCAL TO A SPECIFIC ACTUATOR ATTACHED TO THE STRUCTURE. THIS LOCAL CONTROL APPROACH REDUCES THE NEED FOR EXTENSIVE WIRING TO CONNECT DISTRIBUTED ACTUATORS AND SENSORS AND ELIMINATES THE NEED FOR A CENTRALIZED CONTROL PROCESSING UNIT THAT COORDINATES THE EFFORTS OF MANY ACTUATORS. ALTHOUGH THE SIMPLICITY OF A DECENTRALIZED CONTROL APPROACH IS DESIRABLE, THE APPROACH IS NOT WITHOUT CHALLENGES. THESE INCLUDE ENSURING THAT LOCALLY OPTIMIZED CONTROL INPUTS PRODUCE A NET REDUCTION IN A RELEVANT GLOBAL PERFORMANCE METRIC, SUCH AS SOUND POWER IN THE PASSENGER CABIN. A SECOND CHALLENGE IS TO KEEP THE ACTUATOR FORCE REQUIREMENTS WITHIN REALIZABLE LIMITS AT THE FREQUENCIES OF INTEREST. IN THIS WORK, THE CONTRACTOR SHALL DEVELOP AND DEMONSTRATE VIBRATION REDUCTION ON A ROTORCRAFT STRUCTURE AT FREQUENCIES WHERE GEAR-MESH TONES AND HARMONICS OCCUR AT 500 2000 HZ DUE TO STRUCTURE-BORNE EXCITATION FROM THE MAIN GEARBOX. SPECIFIC FREQUENCIES OF INTEREST SHALL BE SELECTED BY THE CONTRACTOR BASED ON KNOWLEDGE OF THE FREQUENCY DISTRIBUTION OF GEAR MESH TONES IN PRODUCTION ROTORCRAFT. THE THREE-YEAR PROGRAM SHALL ACHIEVE THE FOLLOWING SPECIFIC OVERALL OBJECTIVES: 1. ESTABLISH A FUNDAMENTAL UNDERSTANDING AND EXPERTISE OF THE MINIMAL POWER CONTROL METHODOLOGY AND DEMONSTRATE FEASIBILITY ON A PROOF-OF-CONCEPT TEST IN YEAR 1. 2. DEVELOP MODELING CAPABILITY AND A REAL TIME CONTROL ALGORITHM AND DEMONSTRATE THE TECHNOLOGY S EFFECTIVENESS AND EASE OF IMPLEMENTATION ON A ROTORCRAFT INTERIOR PANEL STRUCTURE IN YEAR 2. 3. DEMONSTRATE A TECHNICAL PATH TOWARD APPLYING THE METHODOLOGY TO THE GEAR MESHING NOISE OF ROTORCRAFT MAIN ROTOR GEAR BOX AND ANALYTICALLY PROVE THE EFFECTIVENESS IN YEAR 3.

SCIENCE RELATED COMMUNICATIONS SUPPORT SERVICES

FSC: 5840 NAME: HARMONIC DRIVE PART NUMBER: G675846-1

TABLEAU SUPPORT SERVICES

SINGLE FREQUENCY LASERS FOR SPACE-BASED WIND AND AEROSOL LIDAR STABLE, SINGLE-FREQUENCY CW LASERS OPERATING AT 2 M AND AT 1064/532/355 NM ARE NEEDED IN A NUMBER OF LIDAR SYSTEMS THAT ARE BEING PLANNED FOR NASA AIRBORNE AND SPACE-BASED LIDAR SYSTEMS. THESE INCLUDE THE FOLLOWING. 1. DIRECT DETECTION DOPPLER WIND LIDAR SYSTEMS THAT OPERATE AT 355 NM. 2. COHERENT WIND LIDAR SYSTEMS THAT OPERATE AT 2 M. 3. HIGH SPECTRAL RESOLUTION LIDAR SYSTEMS THAT OPERATE AT 1064/532/355/NM. 4. OZONE DIAL SYSTEMS. AT LEAST TWO MISSIONS THAT HAVE BEEN RECOMMENDED BY THE NRC EARTH SCIENCE DECADAL SURVEY WILL NEED THE TECHNOLOGY THAT WE PROPOSE TO DEVELOP. THESE ARE THE 3D-WINDS MISSION AND THE ACE (AEROSOL/CLOUDS/ECOSYSTEMS) MISSION. IN OUR PHASE 1 SBIR WE SUCCESSFULLY COMPLETED PROOF OF PRINCIPLE DEMONSTRATIONS OF THE DESIRED CW SINGLE-FREQUENCY LASERS. OUR APPROACH FOR THE 2 M SOURCE WAS A COMPACT LINEAR RESONATOR THAT DEMONSTRATED 65 MW OF SINGLE FREQUENCY OUTPUT COMPARED TO A GOAL OF 20 MW. OUR APPROACH FOR THE 1064/532/355 NM SOURCE WAS INTRACAVITY SECOND AND THIRD HARMONIC GENERATION IN A COMPACT 1064 NM RING LASER THAT DEMONSTRATED SIMULTANEOUS SINGLE-FREQUENCY OUTPUTS OF 520 MW AT 1064 NM, 240 MW AT 532 NM, AND 1.9 MW AT 355 NM. THE GOAL WAS>1 MW AT 355 NM. FOR PHASE 2 WE PROPOSE TO BUILD MORE HARDENED ENGINEERING DEMONSTRATION UNITS OF THE LASERS, TO DEVELOP ELECTRONICS THAT COULD BE READILY TRANSITIONED TO RADIATION HARDENED DESIGNS, AND TO DEMONSTRATE A FREQUENCY LOCKING MODULE FOR THE 1064/532/355 NM SOURCE. WE EXPECT BOTH LASERS TO BE AT A TRL OF 5 AT THE COMPLETION OF THE PHASE 2 WORK.