EXHAUST PLUME AND SIGNATURES

The 37th JANNAF Exhaust Plume and Signatures Subcommittee meeting will include sessions on phenomena associated with exhaust plumes from rockets, ramjets, space, and gun propulsion systems, as well as wakes and hypersonic flows. These phenomena can be divided into three technical areas: plume/wake/hypersonic flowfields, plume/wake/hypersonic signatures (to include electro-optical [EO], infrared [IR], and radio frequencey [RF] radiation), and a broad area incorporating other plume/wake/hypersonic effects.

In addition, the EPSS Signatures panel (formerly the Spectral and In-band Radiometric Imaging of Targets and Scenes (SPIRITS) Users Group) promotes technical interchange among members of the Electro-Optical/Infrared (EO/IR) aircraft signature community from both government and industry.

EPSS Mission Areas

Areas of interest included in the Call for Papers are:


Mission Area I: Plume/Wake/Hypersonic Flow Field Analysis

Chair:
Dr. Kevin D. Kennedy, Army AMRDEC / Redstone Arsenal, AL
Telephone:  (256) 876-7278

Email:          kevin.d.kennedy14.civ@mail.mil

Papers submitted should be concerned with basic definitions of nozzle and exhaust plume flow fields, as well as wake and hypersonic flows. Solid propellant, liquid rocket, and ramjet exhaust plumes will be considered. In addition, plume/wake/hypersonic flow fields at all altitudes will be addressed. Some typical problem areas relating to low/mid-altitude exhaust plumes include external aerodynamic-plume interaction, combustion, turbulent mixing and afterburning, two-phase flow, multi-engine base flow, radiant heating, and oxidizer/fuel gradients. Typical high altitude vacuum plume problems include non-continuum flow, nozzle boundary layer expansion, and condensation. Wake and hypersonic flow problems of interest include ablation mechanisms, flow field modifications caused by outer mold line shape changes due to ablation, and aerothermal heating.


Mission Area II: Plume/Wake/Hypersonic Radiation and Signatures

Chair:
Mr. Jonathan Mautz, NASIC / WPAFB, OH
Telephone:  (937) 522-6238
Email:          jonathan.mautz@us.af.mil

Papers are solicited which describe or highlight the following: recent achievements in plume/wake/hypersonic radiation and signatures (to include the EO/IR and RF regimes); plume/wake/hypersonic radiation and signatures related to the generation of vehicle design environments; detection, surveillance, and identification; advancement of theoretical prediction methods; experimental techniques; results of ground and flight measurements; interpretation and correlation of data; any portion of the radiation spectrum from ultraviolet through longwave infrared; plume/wake/hypersonic radiation interactions with hardbodies in the RF portion of the radiation spectrum; propulsion systems of all types in terms of thrust level, propellant used, and application, as well as operating altitude; the effects of atmospheric species reacting with the exhaust species or absorbed and emitted energy from exhaust plumes, wakes and hypersonic flows; and plumes in a vacuum.


Mission Area III: Exhaust Plume Effects

Chair:
Dr. Forrest E. Lumpkin, NASA-JSC / Houston, TX
Telephone:  (281) 483-2955
Email:          forrest.e.lumpkin@nasa.gov

Theoretical and experimental papers concerning the prediction of plume impingement pressures and heating for low altitude and/or high altitude spacecraft vehicle applications are solicited. Papers treating the generation of plume contaminants and the effects of such contamination on vehicle surface are of interest. Also of interest are papers concerned with high altitude base convective heating resulting from multi-engine plume interactions.


Mission Area IV: Other Plume/Wake/Hypersonic Related Problems

Chair:
Dr. Milton E. Vaughn, AMRDEC / Redstone Arsenal, AL
Telephone:  (256) 876-3726
Email:          milton.e.vaughn.civ@mail.mil

Other papers dealing with exhaust plume technology not covered by the above areas are invited.


Mission Area V: Signatures and Spectral and In-band Radiometric Imaging of Targets and Scenes (SPIRITS)

Chair:
Ms. Robin L. Miller, NAWCWD / Point Mugu, CA
Telephone:  (805) 989-4894
Email:          robin.miller@navy.mil

Papers are solicited for the following topics related to Signatures: EO/IR target signature phenomenology; EO/IR atmospheric transmission/radiation phenomenology and modeling; EO/IR signature target measurements; SPIRITS and other signature codes development and improvement; validation and calibration of SPIRITS and other signature codes and target modules; computational fluid dynamic analysis and modeling for exhaust and related flowfields; exhaust plume radiation; applications of SPIRITS and other signature codes data for acquisition programs, signature reduction, and operational warfighting.

Instructional Tutorial(s) are solicited. Back by popular demand, these instructional tutorials provide the opportunity for each community member to obtain an advanced technical understanding of the inner mechanics of SPIRITS and other signature codes from experts in the field. Each tutorial should be related to a topic listed in paragraph 1. Tutorials should focus on a specific phenomenon or algorithm, provide clear technical instruction, be informative, and carry an academic tone. Tutorials should be limited to two hours or less. Please communicate your interest.


Exhaust Plume and Signatures Subcommittee Chair

Dr. Milton E. Vaughn, AMRDEC / Redstone Arsenal, AL
Telephone:  (256) 876-3726
Email:          milton.e.vaughn.civ@mail.mil

Exhaust Plume and Signatures Subcommittee Deputy Chair

Dr. Manish Mehta, NASA-MSFC / Huntsville, AL
Telephone:  (256) 544-0076
Email:          manish.mehta@nasa.gov

JHU WSE ERG Technical Representative

Mr. Nicholas Keim, JHU WSE Energetics Research Group / Columbia, MD
Telephone:  (443) 718-5005
E-Mail:         nkeim@erg.jhu.edu