Accession Number:

ADP011189

Title:

Multi-Spectral Shock-Layer Radiance Flight Experiment Plan

Descriptive Note:

Corporate Author:

SPACE AND NAVAL WARFARE SYSTEMS COMMANDSAN DIEGO CA

Report Date:

2001-07-23

Pagination or Media Count:

10.0

Abstract:

The Dual-mode Experiment on Bow-shock Interactions DEBI project is designed to contribute further understanding toward the aerothermochemistry associated with hypersonic flight for interceptor applications within the Earths atmosphere. Such detailed understanding is required to accurately model the optical radiation from high temperature flows. A main component of an interceptor target acquisition and tracking system suite is the optical sensors. Future missile interceptors are projected to fly at hypersonic velocities and will be expected to acquire and track the threat while traveling within the atmosphere. An interceptor traveling through the atmosphere at hypersonic Mach numbers will cause a bow shock and experience aerodynamic heat loading that increases temperatures on external surfaces including optical windows. Further, thermal excitation of species occurs in the flow-field around the interceptor. Emissions from hot optics andor excited constituents in the sensors field of regard can lead to sensor blinding in some regions of the spectrum. It is necessary to acquire dual-mode ultraviolet and infrared data during the this flight experiment to improve andor validate state-of-art models developed under Ballistic Missile Defense Organizations BMDO Innovative Science and Technology Program. This paper summarizes the flight experiment, the innovative solutions, and our lessons learned during the design and development of the DEBI instrumentation suite. Problems addressed were 1 how to best detect and transport signals predicted in the short wave and mid wave infrared spectrum 2 what detectors and wavelengths are best suited to optics constraints 3 what new materials were necessary to improve signal to noise for a sensible acquisition system and 4 how to design an optical payload that can perform as required in a harsh environment.

Subject Categories:

  • Antimissile Defense Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE