Defense Intelligence Reference Document Detection And High Resolution Tracking Of Vehicles At Hypersonic

Defense Intelligence Agency · 46 pages · text from the file's own layer

This Defense Intelligence Reference Document from the Defense Intelligence Agency, dated 20 November 2010, was one of a series of advanced technology reports produced in FY 2010 under the Advanced Aerospace Weapon System Applications (AAWSA) Program. It reviews the theory of subsonic, supersonic and hypersonic flow. It then compares electromagnetic, optical, and acoustic and seismic methods for detecting and tracking hypersonic objects, and it makes four recommendations for progress over the next 30 years.

Open the PDF at page 4 Original source ↗

“Anderson”2 pages

p. 7 …textbooks on compressible flow by J.D. Anderson; 2,3 subsonic flow, including the affect of…
p. 45 …2 Anderson, John D., Modern Compressible Flow, 3rd ed., McGraw-Hill, 2003. 3 Anderson, John D…

UNCLASSIFIED/ ,'P81l 8PPll!lllit tl!II!! t!IHLY
Figures
Figure 1. Boundary Layer Development in Subsonic Flow about a Projectile ........................ 4
Figure 2. Subsonic Flow Past a Projectile ....................................................................... 5
Figure 3. Strauhal Frequency as a Function of Reynolds Number for Flow over a
Circular Cylinder ........................................................................................... 6
Figure 4. Supersonic Flow Past a Wedge-Shaped Body .................................................... 8
Figure 5. Supersonic Flow Past a Blunt Body (Spheroid) .................................................. 8
Figure 6. Ratios of Mach Number, Temperature, and Pressure Across a Normal Shock ....... 10
Figure 7. Hypersonic Vehicle Detection Techniques ....................................................... 11
Figure 8. Laser-Based Chronograph ............................................................................ 12
Figure 9. Electromagnetic Spectrum as a Function of Wavelength ................................... 13
Figure 10. Schematic of a RADAR System ................................................................... 14
Figure 11. Radio Reflection Detector ........................................................................... 16
Figure 12. Energy Spectrum of the Sun at 5,778 K ....................................................... 19
Figure 13. Hypersonic Flow Past a Sphere ................................................................... 20
Figure 14. Infrared Energy Spectra for Mach 3 and Mach 3.5 ......................................... 21
Figure 15. Peak Wavelength of the Infrared Radiation Emitted by Hypersonic Objects ........ 22
Figure 16. Peak Shock Layer Temperature for Hypersonic Objects .................................. 22
Figure 17. Schematic of a Pulsed LIDAR System ........................................................... 24
Figure 18. Mach Cone Generated by a Supersonic Object .............................................. 26
Figure 19. Comparison of Detection Technology for Hypersonic Objects ........................... 32
Tables
Table 1: Normal Shock Values for Mach 3 Flow ............................................................... 9
iv
UNCLASSIFIED/ ,'P&tl err1e1111t ""I! &Ht I

Not linked to a story yet.

About this file

Report, from the dia collection. The PDF is mirrored here; the original link is above. 46 pages are in the text index: search them above, or from the library's search.