Mr. Jason Echols Profile

Jason Echols

at Outpost Technologies, Inc

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 4 October 2023 Presentation + Paper

Aluminum metal matrix composites: a capable low-cost mirror substrate

Alex Few, Jason Echols

Proceedings Volume 12677, 1267705 (2023) https://doi.org/10.1117/12.2677689

KEYWORDS: Mirrors, Design and modelling, Aluminum, Telescopes, Alloys, Silicon carbide, Optical surfaces, Nickel, Manufacturing, Aluminum mirrors, Diamond turning, Composites, Lightweight mirrors, Space mirrors, Mirror structures

Read Abstract +

Outpost Technologies designed, manufactured, and tested a 0.305-meter aluminum-silicon carbide metal matrix composite (Al-SiC MMC) mirror for infrared balloon gondola observatory application. Al-SiC MMCs, such as Materion’s SupremEX®, have high specific stiffness, excellent thermal conductivity, and lower CTE than most conventional metals. Furthermore, recent research and development efforts support a brand-new material for investigation: AyontEX™ 13 aluminum-silicon (Al-Si) alloy. Outpost identified significant cost and capability gaps in mirror substrate design trades between ultra-premium beryllium and SiC and conventional aerospace materials and proposes new materials for consideration. The Al-SiC MMC and Al-Si alloy programmatic and technical value proposition combines considerable improvements in specific stiffness and thermal performance at minimal costs increases over aluminum substrates. Assuming congruent geometry, SupremEX® 640XA Al-SiC MMCs reduce gravity sag errors by 47% and increases mirror and structural modes by 35% versus aluminum 5000 and 6000 series without affecting system mass. AyontEX™ 13 also exhibits higher specific strength and stiffness compared to aluminum and shows promise as an uncoated mirror substrate with optical surface finish properties achieved during diamond turning. Outpost presents study results, manufacturability assessments, and ground test concepts for TRL-advancing activities to bring the SupremEX® and AyontEXTM materials before future optics programs as highly capable and low-cost mirror substrates. Lastly, a discussion of ongoing and future work for ultraviolet (UV) and large (> 1.25-meter) Al-SiC MMC and Al-Si alloy applications.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years