Habitat Demonstration Unit Pressurized Excursion Module Systems Integration Strategy

Gill, Tracy; Kennedy, Kriss J.; Merbitz, Jerad; Toups, Larry; Tri, Terry O.; Howe, Alan

doi:10.2514/6.2011-5017

Cited by 6 publications

(2 citation statements)

References 2 publications

(3 reference statements)

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“…Prior to assembly of the shell, a significant effort had been undertaken to define the various infrastructure subsystems, workstations, and test articles which would be integrated into the HDU shell to configure it as the PEM 2 . From February 2010 through mid-July 2010, all of this hardware was installed, integrated together, and checked out-taking about six weeks longer than originally planned.…”

Section: Subsystem Integrationmentioning

confidence: 99%

Planning and Logistics for the In-Field Demonstration of NASA's Habitat Demonstration Unit (HDU) Pressurized Excursion Module (PEM) at Desert RATS 2010

Tri

Kennedy

Toups

et al. 2011

41st International Conference on Environmental Systems

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This paper describes the construction, assembly, subsystem integration, transportation, and field testing operations associated with the Habitat Demonstration Unit (HDU) Pressurized Excursion Module (PEM) and discusses lessons learned. In a one-year period beginning summer 2009, a tightly scheduled design-develop-build process was utilized by a small NASA "tiger team" to produce the functional HDU-PEM prototype in time to participate in the 2010 Desert Research and Technology Studies (Desert RATS) field campaign. The process required the coordination of multiple teams, subcontractors, facility management and safety staff. It also required a well-choreographed material handling and transportation process to deliver the finished product from the NASA-Johnson Space Center facilities to the remote Arizona desert locations of the field test. Significant findings of this paper include the team's greater understanding of the HDU-PEM's many integration issues and the in-field training the team acquired which will enable the implementation of the next-generation of improvements and development of high-fidelity field operations in a harsh environment. The Desert RATS analog environment is being promoted by NASA as an efficient means to design, build, and integrate multiple technologies in a mission architecture context, with the eventual goal of evolving the technologies into robust flight hardware systems. The HDU-PEM in-field demonstration at Desert RATS 2010 provided a validation process for the integration team, which has already begun to retool for the 2011 field tests that require an adapted architecture.

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Section: Subsystem Integrationmentioning

confidence: 99%

Planning and Logistics for the In-Field Demonstration of NASA's Habitat Demonstration Unit (HDU) Pressurized Excursion Module (PEM) at Desert RATS 2010

Tri

Kennedy

Toups

et al. 2011

41st International Conference on Environmental Systems

Self Cite

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“…2). Between each of the pie shaped sections of the HDU-DSH, are radially oriented steel bulkheads 3 , to which the outer shell wall sections are joined. Although the initial HDU-DSH (i.e.…”

Section: Introductionmentioning

confidence: 99%

Design, Analysis and Fabrication of Secondary Structural Components for the Habitat Demonstration Unit - Deep Space Habitat

Smith

Langford²

2012

53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

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In support of NASA's Habitat Demonstration Unit -Deep Space Habitat Prototype, a number of evolved structural sections were designed, fabricated, analyzed and installed in the 5 meter diameter prototype. The hardware consisted of three principal structural sections, and included the development of novel fastener insert concepts. The articles developed consisted of: 1) 1/8th of the primary flooring section, 2) an inner radius floor beam support which interfaced with, and supported (1), 3) two upper hatch section prototypes, and 4) novel insert designs for mechanical fastener attachments. Advanced manufacturing approaches were utilized in the fabrication of the components. The structural components were developed using current commercial aircraft constructions as a baseline (for both the flooring components and their associated mechanical fastener inserts). The structural sections utilized honeycomb sandwich panels. The core section consisted of 1/8th inch cell size Nomex, at 9 lbs/ft 3 , and which was 0.66 inches thick. The facesheets had 3 plys each, with a thickness of 0.010 inches per ply, made from woven E-glass with epoxy reinforcement. Analysis activities consisted of both analytical models, as well as initial closed form calculations. Testing was conducted to help verify analysis model inputs, as well as to facilitate correlation between testing and analysis. Test activities consisted of both 4 point bending tests as well as compressive core crush sequences. This paper presents an overview of this activity, and discusses issues encountered during the various phases of the applied research effort, and its relevance to future space based habitats. Nomenclature A = area

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NASA Habitat Demonstration Unit Project - Deep Space Habitat Overview
Kennedy
¹

2011
41st International Conference on Environmental Systems
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This paper gives an overview of the National Aeronautics and Space Administration (NASA) led multi-center Habitat Demonstration Unit (HDU) project development of a Deep Space Habitat (DSH) configuration that will be analog field-tested during the 2011 Desert Research and Technologies Studies (D-RATS) field tests. The HDU project is a "technology and innovation pull" rapid prototyping project that integrates technologies and innovations from multiple NASA centers. This project will repurpose the HDU Pressurized Excursion Module (PEM) that was field tested in the 2010 D-RATS by adding habitation functionality to the existing operational prototype unit. The 2011 HDU-DSH configuration will build upon the 2010 HDU effort with added emphasis of crew operations (habitation and living, etc), Extravehicular Activities (EVA) operations, mission operations, logistics operations, and science operations that will be required in a deep space mission to a Near Earth Asteroid (NEA). The HDU project consists of a multi-center team assembled together in a rapid prototyping tiger-team approach to quickly build, test, and validate hardware and operations in analog testing environments. The 2011 analog field test will include Multi Mission Space Exploration Vehicles (MMSEV) and the DSH among other demonstration elements to be brought together in a mission architecture context. This paper will describe an overview of the overall objectives, habitat configuration, strategic plan, and technology integration as it pertains to the 2011 field tests. This paper is intended to provide a context for the HDU project rapid-prototyping efforts rather than a detailed description of a DSH design or architecture.

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Habitat Demonstration Unit Pressurized Excursion Module Systems Integration Strategy

Cited by 6 publications

References 2 publications

Planning and Logistics for the In-Field Demonstration of NASA's Habitat Demonstration Unit (HDU) Pressurized Excursion Module (PEM) at Desert RATS 2010

Planning and Logistics for the In-Field Demonstration of NASA's Habitat Demonstration Unit (HDU) Pressurized Excursion Module (PEM) at Desert RATS 2010

Design, Analysis and Fabrication of Secondary Structural Components for the Habitat Demonstration Unit - Deep Space Habitat

NASA Habitat Demonstration Unit Project - Deep Space Habitat Overview

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