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The Lightweight Integrated Solar Array and Transceiver (LISA-T): Second Generation Advancements and the Future of SmallSat Power GenerationThis paper describes the second generation advancements of the Lightweight Integrated Solar Array and Transceiver (LISA-T) currently being developed at NASA's Marshall Space Flight Center. LISA-T is a launch stowed, orbit deployed array on which thin-film photovoltaic and antenna elements are embedded. Inherently, small satellites are limited in surface area, volume, and mass allocation; driving competition between power, communications, and GN&C (guidance navigation and control) subsystems. This restricts payload capability and limits the value of these low-cost satellites. LISA-T is addressing this issue, deploying large-area arrays from a reduced volume and mass envelope - greatly enhancing power generation and communications capabilities of small spacecraft. A matrix of options are in development, including planar (pointed) and omnidirectional (non-pointed) arrays. The former is seeking the highest performance possible while the latter is seeking GN&C simplicity. In both cases, power generation ranges from tens of watts to several hundred with an expected specific power >250W/kg and a stowed power density >200kW/m(sub 3). Options for leveraging both high performance, 'typical cost' triple junction thin-film solar cells as well as moderate performance, low cost cells are being developed. Alongside, both UHF (ultra high frequency) and S-band antennas are being integrated into the array to move their space claim away from the spacecraft and open the door for omnidirectional communications and electronically steered phase arrays.
Document ID
20160011095
Document Type
Conference Paper
Authors
Carr, John A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Boyd, Darren
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Martinez, Armando
(NASA Marshall Space Flight Center Huntsville, AL, United States)
SanSoucie, Michael
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Johnson, Les
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Laue, Greg
(NeXolve, Inc. Huntsville, AL, United States)
Farmer, Brandon
(NeXolve, Inc. Huntsville, AL, United States)
Smith, Joseph C.
(NeXolve, Inc. Huntsville, AL, United States)
Robertson, Barrett
(NeXolve, Inc. Huntsville, AL, United States)
Johnson, Mark
(NeXolve, Inc. Huntsville, AL, United States)
Date Acquired
September 6, 2016
Publication Date
August 6, 2016
Subject Category
Energy Production And Conversion
Space Communications, Spacecraft Communications, Command And Tracking
Report/Patent Number
M16-5327
Meeting Information
Annual AIAA/USU Conference on Small Satellites(Logan, UT)
Distribution Limits
Public
Copyright
Public Use Permitted.

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