NASA STTR 2018-I Solicitation

Proposal Summary

 18-1- T1.01-8823
 Affordable Nano/Micro Launch Propulsion Stages
 Nanosat Maneuvering and Orbital Transfer Stage
Name:   Parabilis Space Technologies, Inc.
Name:   University of Southern California
Street:  1195 Linda Vista Drive, Suite F
Street:  4676 Admiralty Way, Suite 616
City:   San Marcos
City:   Marina del Rey
State/Zip:  CA  92078-3820
State/Zip:   CA 90292 - 7008
Phone:  (855) 727-2245
Phone:   (310) 448-8723

Principal Investigator (Name, E-mail, Mail Address, City/State/Zip, Phone)
Mr. Greg Berg
1195 Linda Vista Drive, Suite F San Marcos, CA 92078 - 3820
(855) 727-2245

Business Official (Name, E-mail, Mail Address, City/State/Zip, Phone)
David Brynes
1195 Linda Vista Drive, Suite F San Marcos, CA 92078 - 3820
(619) 750-4484
Estimated Technology Readiness Level (TRL) :
Begin: 2
End: 4
Technical Abstract

The proposed innovation is a modular, high-performance orbital transfer stage (OTS) vehicle for Nanosats and Microsats launched as secondary payloads and require maneuvering to their desired orbits. The OTS has a modular design, and can accommodate payloads ranging from 5kg 3U size Nanosats to >50kg Microsat size vehicles. The propulsion system uses hydroxyl-terminated polybutadiene (HTPB) fuel with nitrous oxide (N2O).  These “green propellants” that are sufficiently safe for ridesharing, will provide density impulse over 10-15% higher than a hydrazine system, and are capable of near-impulsive ΔV maneuvers to support launch vehicle collision avoidance operations, final operational orbit insertion, or tactical inclination/plane change maneuvers. The proposed system leverages additive manufacturing as the primary fabrication process incorporating modular tank and thruster configurations with integral Reaction Control Subsystem.  Basic Propulsion “modules” can be combined to enable various size vehicles and missions.  The basic concept for the OTS “core” configuration is also amenable to integrating the hybrid propulsion directly into a Nanosat bus. The proposed solution will allow lower cost access to space than existing commercial monopropellant system liquid stages, uses a fraction of the power of electric propulsion systems, and will be much safer than systems that use toxic and/or explosive propellants.  The OTS will have complete capability (power, guidance and navigation, etc.) to position the Payload spacecraft into their desired orbits. 

Potential NASA Applications

NASA can use the proposed OTS technology to place low-cost small satellite platforms in operational orbits for high-value science missions, using secondary payload ride opportunities. This will enable NASA to explore planets, comets, asteroids, and distant moons at an extremely low cost by using rapidly developing small satellite technology.  Other NASA beneficiaries include NASA’s CubeSat programs and the Virtual Telescope Alignment System program, which require precision orbit positioning.

Potential Non-NASA Applications

Non-NASA customers include universities, emerging Smallsat businesses, and non-profit research institutes with active CubeSat development programs. These customer groups will benefit substantially from low-cost insertion into more desirable orbits. Additionally, organizations such as iCubeSat have made a strong case for the utility of CubeSats in deep space; iCubeSat mission scenarios require significant propulsion capability, and can be served by the proposed OTS system.

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