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Solicitations › Department of Defense › Defense Advanced Research Projects Agency (DARPA)

Cattle Run Proposers Day Announcement

Open — responses due 4 Nov 2026 (9 days left) · Unrestricted (full and open) · Defense Advanced Research Projects Agency (DARPA), DoD · NAICS 541715 · Solicitation DARPA-SN-27-03

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Solicitation details

Solicitation numberDARPA-SN-27-03
Notice IDbf79b55fdfdb41d89733869966ba4fa9
AgencyDepartment of Defense (DoD)
Sub-agencyDefense Advanced Research Projects Agency (DARPA)
Contracting officeDEF ADVANCED RESEARCH PROJECTS AGCY
NAICS code541715 — Research and Development in the Physical, Engineering, and Life Sciences (Except Nanotechnology and Biotechnology)
Product / service code (PSC)AC13
Set-asideUnrestricted (full and open)
Notice typeSpecial Notice
Posted22 October 2026
Response deadline04 November 2026
CompetitionCompetitive

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Description

PROPOSERS DAY: DARPA is hosting a Proposers Day in support of DARPA-SN-27-03 Cattle Run program on Tuesday, November 10, 2026, at the DARPA Conference Center (675 North Randolph Street, Arlington, VA 22203) from 8:00am to 5:00pm EST. The purpose of this conference is to provide information on the Cattle Run program; promote additional discussion on this topic; address questions from potential proposers; and provide a forum for potential proposers to meet for teaming opportunities. PROGRAM OBJECTIVE AND DESCRIPTION: The Defense Advanced Research Projects Agency (DARPA) Cattle Run program enables cost effective cislunar constellations by developing and demonstrating autonomous spacecraft that leverage renewable propulsion [EF1.1]for persistent cislunar access. Phase 1 develops and rapidly launches a[SK2.1] Demonstrator spacecraf[SK3.1]t in 18 months that shows the ability of renewable propulsion to achieve sufficient acceleration, accurate vehicle control, and autonomous navigation necessary for persistent cislunar access. The Phase 1 objective is to collect on-orbit data to prove the performance of the renewable propulsion approach including vehicle control and navigation data. The Demonstrator spacecraft is launched below GEO and is agnostic of formfactor. Phase 2 creates multiple spacecraft and demonstrates persistent cislunar access.

Version history

SAM.gov has posted 3 notices under solicitation DARPA-SN-27-03, oldest first.

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