Green Monopropellant Alternatives to Hydrazine
JANNAF / NIRPS Joint TIM
Mission Areas

The TIM will cover these thirteen mission areas described below. Additional information concerning these areas or the topics being solicited should be directed to the respective Area Chair.

TIM Mission Areas

Areas of interest included in the Call for Presentations are:

Mission Area I: Ground Operations, Production & Storage of Hydrazine

Chair:
Mr. Joel W. Robinson, NASA-MSFC / Huntsville, AL
Telephone:  (256) 544-3513
Email:         joel.w.robinson@nasa.gov

This area focuses on the current state of hydrazine operations, production and storage. Anticipate presentations provided by the Kennedy Space Center, Vandenberg Air Force Base and the Defense Logistics Agency.

Mission Area II: Enabling Large Spacecraft Missions

Chair:
Dr. Eric H. Cardiff, NASA-GSFC / Greenbelt, MD
Telephone:   (301) 286-0388
Email:         eric.h.cardiff@nasa.gov

This area focuses on exploring what future missions could be enabled utilizing green monopropellants. Anticipate a variety of presentations from manned spacecraft sizes down to small spacecraft (larger than ESPA class).

Mission Area III: Enabling Small Spacecraft Missions

Chair:
Mr. Elwood F. Agasid, NASA-ARC / Moffett Field, CA
Telephone:  (650) 604-0558
Email:         elwood.f.agasid@nasa.gov

This area focuses on exploring what future small satellite missions could be enabled utilizing green monopropellants. Anticipate a variety of presentations from industry and academia.

Mission Area IV: Commercial Spacecraft Advantages & Disadvantages

Chair:
Mr. Joel W. Robinson, NASA-MSFC / Huntsville, AL
Telephone:  (256) 544-3513
Email:         joel.w.robinson@nasa.gov

Input is desired from spacecraft prime manufacturers to understand advantages and disadvantages from their perspective of pursuit of a hydrazine replacement. Presentations may be provided by ATK, Ball, Boeing, Loral, Lockheed Martin, Northrop Grumman, Orbital Sciences and Sierra Nevada. These presentations will include industry’s expectations for potential propellant conversion.

Mission Area V: International Participation (Invited)

Chair:
Mr. Joel W. Robinson, NASA-MSFC / Huntsville, AL
Telephone:  (256) 544-3513
Email:         joel.w.robinson@nasa.gov

Presentations from international efforts of hydrazine replacement. Presenters are expected from ECAPS, DLR, Astrium and ESA and will only be permitted for this section.

Mission Area VI: Long-term Storage, Handling and Transport

Chair:
Mr. Adam J. Brand, AFRL / Edwards AFB, CA
Telephone:  (661) 275-5787
Email:        adam.brand@us.af.mil

Long-term depot or ground storage issues remain to be resolved to ensure flight readiness of propellants to include storage vessel and other environmental impacts. Document current level of hazard characterization and safety testing that has been performed on green monopropellants and what additional characterization and testing is required to accomplish standards for all domestic launch ranges.

Mission Area VII: Ignition Techniques

Chair:
Mr. A. Paul Zuttarelli, AFRL / Edwards AFB, CA
Telephone:  (661) 275-6786
Email:        anthony.zuttarelli@us.af.mil

Hydrazine can be ignited at ambient conditions. What are the limitations of cold/warm start of green monopropellants and can they be overcome? Presentations will include discussion of current ignition concepts and future options that would minimize pre-heating of catalyst material or additional size, weight, and power demands from the spacecraft for propellant conditioning.

Mission Area VIII: Stability and Performance

Chair:
Mr. Matthew C. Deans, NASA-GRC / Cleveland, OH
Telephone:  (216) 433-6585
Email:        matthew.c.deans-1@nasa.gov

This mission area will address current green monopropellant performance at various thruster levels and duty cycles. Of particular interest is the degradation and repeatability of minimum impulse bit as function of propellant throughput and start condition.

Mission Area IX: Materials Durability and Compatibility

Chair:
Mr. Charles W. Pierce, NASA-MSFC / Huntsville, AL
Telephone:  (256) 544-6366
Email:        charles.pierce@nasa.gov

Due to the increased performance of green monopropellants, the intermediate decomposition products & their oxidation potential and the decomposition zonal temperatures that thruster components will experience are elevated above typical hydrazine thruster component material capabilities. The more demanding propellant formulation and exhaust species environmental differences may require new material development to get thruster operational lifetimes and power requirements to match those of current hydrazine flight systems. For instance, how does the community address stress corrosion cracking? Can existing hydrazine components be utilized in green monopropellant service?

Mission Area X: Propellant Mechanical Properties

Chair:
Ms. Caitlin A. Bacha, NASA-GSFC/Greenbelt, MD
Telephone:  (301) 286-6217
Email:        caitlin.bacha@nasa.gov

With the advent of these new propellants, what testing has been accomplished to obtain mechanical properties? Items of interest include capillary action, wetting, and surface tension which are of importance for liquid level sensing. For flow and sound propagation, density, viscosity and bulk modulus of the fluid are critical factors for future system performance calculations and design purposes.

Mission Area XI: Component Fabrication and Test

Chair:
Mr. James A. Richard, NASA-MSFC/Huntsville, AL
Telephone:  (256) 544-9452
Email:        james.a.richard@nasa.gov

What is the current scale of green monopropellant components and systems & how/where are they tested? What is the change in physical infrastructure (either government or industry assets) to accommodate increased testing?

Mission Area XII: Decomposition & Reaction Modeling

Chair:
Dr. Ghanshyam L. Vaghjiani, AFRL/Edwards AFB, CA
Telephone:  (661) 275-5657
Email:        ghanshyam.vaghjiani@us.af.mil

What are the exhaust products from green monopropellants and what are their impacts (if any) to spacecraft systems and/or payloads?

Mission Area XIII: Qualifying New Sources

Chair:
Ms. Concepcion F. Allen, Air Force Petroleum Agency/Wright Patterson AFB, OH
Telephone:  (937) 255-8038
Email:        conchita.allen@wpafb.af.mil

How would the propulsion community qualify these new sources for propellant procurement? What are the standardized procedures for propellant acceptance and what is the status of standards / specifications for them?

TIM Program Committee Members:

Member:     Mr. Joel W. Robinson, NASA-MSFC / Huntsville, AL
Telephone:  (256) 544-3513
Email:         joel.w.robinson@nasa.gov

Member:     Mr. Charles W. Pierce, NASA-MSFC / Huntsville, AL
Telephone:  (256) 544-6366
Email:         charles.pierce@nasa.gov

Member:     Mr. Mark D. Klem, NASA-GRC / Cleveland, OH
Telephone:  (216) 977-7473
Email:         mark.d.klem@nasa.gov

Member:     Mr. A. Paul Zuttarelli, AFRL / Edwards AFB, CA
Telephone:  (661) 275-6786
Email:         anthony.zuttarelli@us.af.mil

Member:     Dr. Eric H. Cardiff, NASA-GSFC / Greenbelt, MD
Telephone:  (301) 286-0388
Email:         eric.h.cardiff@nasa.gov

Member:     Ms. Charlene F. Smoot, Defense Logistics Agency / San Antonio, TX
Telephone:  (210) 925-9955
Email:         charlene.smoot@dla.mil