Terahertz Quantum Cascade Laser-Based Sensors for Hypersonic Flows (7274-050), Phase I

Metadata Updated: November 12, 2020

Ground test facilities are used by NASA to simulate the conditions present during flight at hypersonic velocities, to test thermal protection materials for existing spacecraft and develop new hypersonic aircraft. To ensure the accuracy and usefulness of ground test results, the state of the gas in the ground test facility must be known. Key components of the test gas, such as atomic oxygen and atomic nitrogen, can be monitored today using pulsed laser sources operating in the ultraviolet region of the spectrum. However, this measurement scheme is not fast enough to detect rapid fluctuations which may be present. Our innovation is a sensor based on compact, portable source of tunable laser radiation in the far-infrared (terahertz) region of the spectrum which can be used to measure the number density and velocity of atomic oxygen continuously during a ground test. During Phase I we will prove feasibility by showing that a laser with the required wavelength, tuning range, and linewidth can be constructed. During Phase II we will prove practicality by optimizing the properties of the laser, building a prototype sensor, demonstrating the detection of atomic oxygen, and delivering the sensor to an appropriate NASA test facility.

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Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Publisher Space Technology Mission Directorate
Unique Identifier Unknown
Maintainer
Identifier TECHPORT_5378
Data First Published 2004-07-01
Data Last Modified 2020-01-29
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Homepage URL https://techport.nasa.gov/view/5378
Program Code 026:027
Source Datajson Identifier True
Source Hash ffd6cef8a30e43fbfc6784a908d311e4f47877ca
Source Schema Version 1.1

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