SATPC0037677 Tab 04 4 SOW..pdf

Statement of Work (SOW) for Yarn Procurement

Project Title: Supply of Virgin and Modified Yarns for Artemis Suit Materials Phase III

Background: The overarching goal of the NASA’s Artemis Suit Materials (ASM) Project conducted by the Crew and Thermal System Division Advanced Suit Team, is to develop enabling technologies and potentially a turnkey solution for suit vendors for the outer shell fabric of a lunar suit environmental protection garment (EPG). The project asserts that no existing fabric currently meets all requirements necessitating the construction of a bespoke solution designed to withstand the harsh conditions of the lunar environment.

Virgin yarns and yarn modifications have been identified by NASA as commercially available solutions with desirable characteristics for advanced suit application. Yarn modification capabilities can potentially close identified gaps in performance such as UV degradation, abrasion resistance, dust repulsion, surface resistivity, and optical properties.

Objective:

The objec�ve of this Statement of Work is for the vendor to collaborate with NASA in advancing the development of high-performance materials for lunar suit applica�ons by undertaking two major tasks:

1. Sourcing of Virgin Yarns for Weaving Prepara�on Trials: The vendor will leverage its extensive inventory and procurement rela�onships with yarn vendors to minimize lead �mes and address NASA's procurement challenges. The task includes performing yarn prepara�on techniques, such as up-twis�ng or air-tacking, with twist per inch (tpi) specifica�on set to 2 tpi Z. The vendor will source commercially available uncoated or coated yarns from agreed-upon fiber types to support fabric forma�on down selec�on.

2. Coa�ng Applica�on/Development to Address Requirement Gaps: The vendor will develop and document custom coa�ng solu�ons tailored to specific yarn types to bridge gaps iden�fied in the requirements list. The task includes a 12-week development �meline, chemistry formula�on, equipment purchase or modifica�on, documenta�on of process steps, quan��es needed, and criteria for down selec�on. The vendor will conduct basic physical property tes�ng of new coa�ng op�ons to evaluate their suitability for mee�ng NASA's requirements.

This collabora�on aims to streamline material sourcing, op�mize yarn prepara�on, and develop innova�ve coa�ng solu�ons to meet the unique demands of NASA's fabric development project.

Period of Performance: 22 weeks a�er authority to proceed (ATP). Drexel (the fabric prototyping vendor) requires finished coated yarns by July 1, 2025, con�ngent upon the date of ATP. The work will proceed over a flexible, but defined schedule to ensure iterative feedback of meetings every 2 weeks and final sample delivery within the required timeframe. Sample deliveries and iterations will align with NASA’s testing schedule to ensure timely feedback on each enhancement area.

Travel: No travel expenses are required/included in this TO.

Detailed Scope:

Task 1: Kickoff Mee�ng

• Objec�ve: Align on project objec�ves, �melines, deliverables, and technical details.

• Timeline: Within 2 weeks of ATP

• Details:

o Review project scope, iden�fy technical challenges, and finalize yarn and coa�ng requirements.

Task 2: Supply of Virgin or Coated Commercial-Off-The-Shelf (COTS) Yarns

• Objec�ve: Source and supply specified yarns to NASA or NASA prototyping partner for ini�al warping/weaving trials.

• Timeline: Complete supply by 4 weeks a�er ATP.

• Deliverables (materials will be provided wound on paper tubes):

o Provide quan��es of the following off-the-shelf yarns uptwisted:

1. 100d Vectran: 50,000 m

2. 400d PTFE: 50,000 m

3. 200d Kevlar: 50,000 m

4. 100d UHMWPE: 50,000 m

5. 200d Vectran: 50,000 m

6. 200d ePTFE: 50,000 m (supply flat) o 2-ply twis�ng of 200d Vectran: 10,000m qty. Planning just incase it is needed.

Task 3: Yarn Prepara�on (Coa�ng/Uptwis�ng)

• Objec�ve: Prepare yarns to meet NASA’s requirements through specialized coa�ngs and twis�ng.

• Timeline: 10 weeks a�er ATP

• Deliverables (materials will be provided wound on paper tubes):

o Uptwis�ng: Strengthen Quartzel thread by applying up-twist: 50,000 m

i. Customer supplied material o Coa�ng: Coat the following yarns with specified materials:

1. 100d Vectran coated in polyimide: 50,000 m

2. 200d Kevlar coated in polyimide: 50,000 m

3. 100d Vectran coated in resin from approved shortlist: 50,000m

4. 250d PBO coated in resin polyimide: 50,000 m

Task 4: Prototype Coa�ng Study and Evalua�ons

• Objec�ve: Study and evalua�on of addi�onal coa�ngs on yarns from Task 2 and Task 3, as deemed feasible by the vendor, with final coa�ng configura�on of yarn deliverables to be determined in collabora�on with NASA.

• Timeline: 18 weeks a�er ATP

• Deliverables: Prototyping reports and samples; 10,000 m minimum to 50,000 m maximum of each yarn as listed to achieve proper�es as per proper�es 1-4 below, based on priori�za�on with and feedback to NASA (priority at start of work as listed) o Proper�es:

1. White color: Coa�ng to enhance the yarn’s op�cal proper�es, color the white

2. UV resistance: Coa�ng to improve the coated yarn’s UV resistance

3. Abrasion resistance: Coa�ng to improve the coated yarn’s abrasion resistance

4. Flame resistance: Coa�ng to enhance flame resistance, with concerns around resin dripping o Proposed coated yarns:

1. 150d PBO coated with white polyimide

2. 100d Vectran coated with white polyimide

3. 200d Kevlar with a white flame resistant coa�ng from approved shortlist

Task 5: Physical Property Tes�ng

• Objec�ve: Conduct tes�ng to evaluate the performance of yarns and coa�ngs from Task 3 and Task 4.

• Timeline: Concurrent with yarn prepara�on, 20 weeks a�er ATP

• Details:

o Perform the following tests, per the vendors standards:

Yarn-on-same yarn abrasion (ASTM D6611-23), 10000 cycles set as test “Pass” Cross-sec�onal analysis via op�cal microscopy or SEM Stress-strain assessment to failure (ASTM D885) Flex data based on the vendors developed test (based around ISO 5626:1993) Addi�onal tests available from the vendor as determined. (ASTM D1907, ASTM

D1423)

• Deliverables:

o Comprehensive test data and analysis for each prepared yarn type.

Task 6: Final Report

• Objec�ve: Summarize project findings, including process details, test results, and recommenda�ons.

• Timeline: Deliver 22 weeks a�er ATP.

• Deliverables:

o Detailed documenta�on of:

Process steps and methodologies.

Quan��es of yarns prepared and used.

Criteria for down-selec�on of materials.

Results of physical property tes�ng.

o Recommenda�ons for next steps and poten�al scale-up.

Comple�on Date: All tasks to be completed 22 weeks a�er ATP, with weekly updates provided to NASA throughout the project.