DOW-UAP-D120, AAWSAP DIRD, Materials for Advanced Aerospace Platforms, January 2010
Department of War · 1/12/10 · Las Vegas, Nevada · Document
DOW-UAP-D120, AAWSAP DIRD, Materials for Advanced Aerospace Platforms, January 2010 is indexed as a Department of War record with incident date 1/12/10 and location Las Vegas, Nevada. This document is a Defense Intelligence Reference Document (DIRD), a technical reference format used by the Defense Intelligence Agency (DIA) to capture baseline knowledge on a specific topic for later analytic use. DIRDs are best understood as reference and synthesis products rather than as original research. It is one of 38 DIRDs produced under the Advanced Aerospace Weapon System Applications Program (AAWSAP) between 2009 and 2011. Because AAWSAP s scope permitted a broad range of supporting topics, not every DIRD in the series directly concerns aerospace systems or future threat assessment. The following summary reflects the DIRD s scope and framing at the time of writing and should not be read as implying current validation of the concepts discussed. This DIRD surveys the structural materials needed for advanced aerospace platforms and argues that material choice cannot be separated from overall vehicle design, because launch vehicles, space vehicles, reusable systems, and propulsion hardware each face different temperature, durability, weight, and manufacturing constraints. The report reviews a range of candidate material classes, including advanced aluminum alloys; polymer-, aluminum-, and titanium-matrix composites; titanium alloys; nickel-base alloys; refractory metals; ceramic-matrix composites; carbon-carbon composites; and titanium aluminides. It emphasizes that balancing performance against practical limits such as fabrication methods, cost, inspection, contamination control, and service environment remains a major challenge. Its overall conclusion is that many promising materials exist, but their usefulness depends on application-specific tradeoffs and on closer integration of material selection with design and manufacturing, with some systems judged to be more valuable targets for development than others. Redactions have been made to protect the identity of eyewitnesses, the location of government facilities, or potentially sensitive information about military sites not related to UAP. No redactions have been made to any files released under President Trump's directive concerning information about the nature or existence of any encounter reported as a UAP or related phenomena.
Notable / anomalous element
- Are a case formation and property degradation alloy dependent? (native PDF text, page 18)
- An additional characteristic of PMC structures-one related to the laminated construction of components made by hand layup or automated tow placement methods-is their susceptibility to formation of delaminations when impacted perpendicular to the plane of the plies. (native PDF text, page 11)
- While a lighter combustion chamber would be welcome, developing hydrogen-resistant turbine materials would be a much better use of available rocket engine alloy development resources. (native PDF text, page 27)
- It also requires a large injection mach ine capable of multiple injection sites to ensure the complete infiltration necessary to avoid formation of voids. (native PDF text, page 10)
Details
- This product is one in a series of advanced technology reports produced in FY 2009 under the Defense Intelligence Agency, Defense Warning Office's Advanced Aerospace Weapon System Applications (AAWSA Program. (native PDF text, page 2)
- Comments or questions pertaining to i this document should be addressed to MP Person 1 AAWSA Program! (native PDF text, page 2)
- 9 Reusable Single-Stage-to-Orbit Vehicles. (native PDF text, page 3)
- Schematic Diagram of Friction Stir Welding. (native PDF text, page 3)
- Specially Modified 747 Transporter Unloading a Boeing 787 Composite Fuselage Barrel Section. (native PDF text, page 3)
- Micrograph Showing Phase Formation at the Surface of a Ti Alloy That has Been Exposed to Air at Elevated Temperature. (native PDF text, page 3)
- Cross-Section Micrograph of a Ti Matrix Composite. (native PDF text, page 3)
- UNCLASSIFIED/ /FOA OFFI 1Ak Ulilii ONkY Materials for Advanced Aerospace Platforms Introduction "Advanced aerospace platforms" is a broad topic that can be divided into several narrower subtopics to enable a more concise discussion of materials advances, challenges, and opportunities. (native PDF text, page 4)
Tags: War Department, Nevada, AAWSAP, Technical research, Weapons, Rocket