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Relocatable 10 kW Solar Array for Lunar South Pole Missions Deployable, relocatable, free-standing solar arrays are being developed to provide modular power for future lunar South Pole missions. Major design requirements for these arrays will be low mass, compact launch stowage, and highly reliable deployment and retraction. This paper presents a novel conceptual design for a10 kW solar array to address these requirements referred to as the Relocatable Solar Array (RSA).Simply stated, the concept is a pair of solar cell blankets freely hanging from a horizontal cross arm supported by a vertical, slender, telescoping mast resting on a deployable tripod base. A major factor in simplifying the design is that the force exerted by lunar gravity is used to deploy and maintain extension of the hanging array blankets. A second major factor in achieving the desired low mass and high volumetric efficiency is that the array operates in the vacuum, low-gravity, lunar environment with no deployed vibration frequency requirement. Such a low-load environment enables use of extraordinarily slender and low mass structural members to support the hanging array blankets. This concept was developed, in part, to serve as a NASA reference solar array concept against which other proposed arrays can be compared.
Document ID
20210011743
Document Type
Technical Memorandum (TM)
Authors
Richard Pappa
(Langley Research Center Hampton, Virginia, United States)
Chuck Taylor
(Langley Research Center Hampton, Virginia, United States)
Jay Warren
(Langley Research Center Hampton, Virginia, United States)
Matt Chamberlain
(Langley Research Center Hampton, Virginia, United States)
Sarah Cook
(Langley Research Center Hampton, Virginia, United States)
Scott Belbin
(Langley Research Center Hampton, Virginia, United States)
Roger Lepsch
(Langley Research Center Hampton, Virginia, United States)
Dan Tiffin
(Langley Research Center Hampton, Virginia, United States)
Bill Doggett
(Langley Research Center Hampton, Virginia, United States)
Martin Mikulas
(National Institute of Aerospace Hampton, Virginia, United States)
Iok Wong
(National Institute of Aerospace Hampton, Virginia, United States)
Dave Long
(Analytical Mechanics Associates (United States) Hampton, Virginia, United States)
Devon Steinkoening
(Analytical Mechanics Associates (United States) Hampton, Virginia, United States)
Alejandro Pensado
(Analytical Mechanics Associates (United States) Hampton, Virginia, United States)
Joseph Blandino
(Virginia Military Institute Lexington, Virginia, United States)
Jerry Haste
(Universities Space Research Association Columbia, Maryland, United States)
Date Acquired
March 22, 2021
Publication Date
March 29, 2021
Subject Category
Structural Mechanics
Funding Number(s)
WBS: 596118.04.61.23
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.
Technical Review
Professional Review
Keywords
Lunar Surface Power
Deployable Solar Arrays
Relocatable Solar Arrays
High Power Flexible-Substrate Solar Arrays

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NameType NASA-TM-20210011743.pdf STI