SATPC0034913 TAB 04 4 SOW.pdf

INTRODUCTION

Given that extravehicular (EVA) suit operations are conducted in a reduced pressure environment relative to the vehicle or habitat, there is a risk of decompression sickness (DCS) during EVA in weightlessness and partial gravity during planned exploration missions. For many years pre-breathe protocols with 100% oxygen (O2) have been performed prior to EVA by Space Shuttle and International Space Station astronauts to reduced DCS risk and are supported by the resources that may be readily re-supplied from the ground. These resources will be constrained during lunar stays and missions to Mars, and astronauts will be expected to perform multiple EVAs within a mission. Increased efficiency of pre-breathe activities will decrease consumables and crew time while maintaining or reducing risk and maximizing EVA performance, thus extending the availability of resources and protecting reserves for contingency scenarios.

Manipulating vehicle or habitat and suit environments (e.g., breathing gas composition, pressure) can impact the requirements for pre-breathe, and many of these environments are not yet defined, particularly for commercial providers. Further, contingency scenarios for the event of unplanned vehicle, habitat, or spacesuit decompression result in significant risk of serious DCS, and must be protected against for Mars missions. However, NASA’s existing models are limited in their ability to predict Type II DCS risk under these situations, which affects the ability to make risk-informed decisions on the design and operation of vehicles and launch-entry-abort (LEA) spacesuits.

Human Health Countermeasures will use this equipment to meet the objectives of the Aerospace Estimation Tool for Hypobaric Exposure Risk pilot study, in which these Ultrasound systems will be used to assess decompression stress of subjects in a closed chamber at reduced pressure and elevated oxygen levels.

Objective/Requirement 2 units of the Vivid iq Standard Ultra Edition v206

Provide ultrasound device that can be used to image human body in a variety of environmental conditions.

SPECS

Dimensions

• Height: 64 mm (2.5”)

• Width: 390 mm (15.35”)

• Depth: 362 mm (14.25”)

• Weight with battery: 5.2 kg (11.5 lbs) Electrical Power

• Voltage: 100-240 VAC

• Frequency: 50/60 Hz

• Power: max. 130 VA

• Operating System – Windows 7

Cart Dimensions

• Height: 835 – 1115 mm (32.9” – 43.9”)

• Width: 524.9 mm (20.7”)

• Depth: 552.3 mm (21.7”)

• Weight: 41 kg (90 Ibs.)

Cart Design

• Three USB ports

• Six probe holders

• Four probe cable hooks

• Multi-probe box (optional ) – three RS, one DLP to support 6VT-D Display Monitor

• 15.6” widescreen full High-Definition (HD) flicker-free LCD display with full touch ability

• Ergonomic FlexFit design with adjustable typing angle and flexible view angle

• Resolution: 1920 x 1080 pixels, full HD

• Fold down and lock mechanism for transportation

• The screen can be adjusted in different angles for scanning mode, typing mode, and closing, allowing to optimize the viewing angle in each position

• Backlight adjustable