# HERMES BAA CALL: Rotating Detonation Rocket Engine-Combined Cycle (RDRE-CC) Flight Demonstration

Notice 34305e040d3549e9aa3908d6d7dd2765 (solicitation FA9300-20-S-0001-CALL-RDRE-CC) from DEPT OF DEFENSE, FA9300  AFTC PZR, posted 2026-10-22, responses due 2026-11-17T00:00:00.000Z. Status: open.

| Field | Value |
| --- | --- |
| Notice ID | 34305e040d3549e9aa3908d6d7dd2765 |
| Solicitation number | FA9300-20-S-0001-CALL-RDRE-CC |
| Type | Special Notice |
| Agency | DEPT OF DEFENSE |
| Sub-tier | DEPT OF THE AIR FORCE |
| Office | FA9300  AFTC PZR |
| Posted | 2026-10-22T14:25:00.000Z |
| Response deadline (UTC) | 2026-11-17T00:00:00.000Z |
| Set-aside | No Set aside used |
| NAICS | 541715 |
| PSC | AC11 |
| Place of performance | Edwards, CA, USA |
| Award | - |

## Description

============================================== AMENDMENT 0002 - NOTICE OF THE USE OF NON-GOVERNMENT ADVISORS & RELEASE OF REVISED ATTACHMENT 2 (v2) ============================================== The purpose of this update is to notify interested parties of two critical administrative and technical updates to the subject 2-Step Call: 1. RELEASE OF REVISED TECHNICAL QUESTIONS & ANSWERS (v2): The Government has released v2 of the Controlled Technical Q&As (Distribution C) to provide additional clarification. Specifically, a new clarification has been added as Question 2.3, "Air-Launched Flight Demonstration." As a result of this insertion, the former Questions 2.3 and 2.4 have shifted to Questions 2.4 and 2.5, respectively. All vetted contractors must request access to the updated attachment: "Attachment 2 - Call Q&A v2 (Distribution C)" via the SAM.gov "Attachments" portal. You MUST enter your company's CAGE Code in the "Reason for Request" text box to facilitate rapid cross-referencing against our registration log.** 2. All prospective offerors are hereby notified that the Government intends to utilize a non-government advisor to provide technical advisory support during the evaluation of Phase I White Papers and subsequent Phase II Proposals resulting from this Call. a. ADVISOR ENTITY: Technical advisory support will be provided by an authorized subcontractor under Sierra Lobo, Inc. (SLI) (Contract FA930023F6001). b. ADVISORY CAPACITY ONLY: The advisor's role will be strictly advisory and non-governmental. The advisor will provide technical subject matter expertise to assist the Government evaluators but will not assign ratings, make selections, or perform any inherently governmental decision-making functions. c. DATA PROTECTION: In accordance with RFO Part 15.108 and 15.201, the advisor is bound by strict, legally binding Government Non-Disclosure Agreements (NDAs) and statutory Procurement Integrity Act requirements to safeguard all contractor proprietary and source selection sensitive information. d. OBJECTION PROCESS: Prospective offerors who have a specific, documented objection to the disclosure of their proprietary white paper/proposal data to Sierra Lobo, Inc. personnel must submit their objection, including a detailed technical/business justification, to the Contracting Officer (mathew.pierson@us.af.mil) within three (3) business days of this posting. Failure to submit a written objection within this timeframe shall be deemed as concurrence with the use of the specified non-government advisor. ============================================== END of AMENDMENT 0002 ============================================== ============================================== AMENDMENT 0001 - NOTICE OF AVAILABILITY OF TECHNICAL Q&AS (DISTRIBUTION C) ============================================== The purpose of this update is to notify interested parties that official Government Responses to Industry Questions has been finalized. Because these Q&As address technical details of the Call, they have been marked as Controlled Unclassified Information (CUI) under Distribution Statement C (Distribution authorized to U.S. Government agencies and their contractors). INSTRUCTIONS FOR ACCESS: 1. Previously Vetted Contractors (Already Approved for Attachment 1): Please request access to "Attachment 2 - Call Q&A (Distribution C)" via the SAM.gov "Attachments" portal. CRITICAL REQUIREMENT: You MUST enter your company's CAGE Code in the "Reason for Request" text box on SAM.gov. Access will be cross-referenced against the Government's approved registration log and granted immediately upon validation. Requests submitted without a CAGE Code will be rejected. 2. New Requestors: If you have not yet been vetted, you must request access to both Attachment 1 and Attachment 2 simultaneously. You must submit your active Joint Certification Program (JCP) details, CAGE Code, and a valid US-citizen company email address in accordance with the original access protocols detailed below. ============================================== END of AMENDMENT 0001 ============================================== SPECIAL NOTICE – CALL FOR PROPOSALS Department of the Air Force / Air Force Materiel Command (AFMC) Air Force Research Laboratory (AFRL) Rocket Propulsion Division – Edwards AFB, CA HERMES Broad Agency Announcement (BAA) FA9300-20-S-0001 CALL: Rotating Detonation Rocket Engine-Combined Cycle (RDRE-CC) Flight Demonstration Parent Solicitation Number: FA9300-20-S-0001 Call Identifier: FA9300-20-S-0001-CALL-RDRE-CC Prior Market Research Notice: RFIFA930026R0001 NAICS Code: 541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) Product Service Code (PSC): AC11 – National Defense R&D Services; Department of Defense; Basic Research Response Date (Step 1 - White Papers): [16 NOV 2026] at 1600 PST Set-Aside: Full and Open Competition (under RFO 35.102) 1. Program Description The Air Force Research Laboratory, Rocket Propulsion Division (AFRL/RJP), located at Edwards AFB, CA, is issuing a formal Two-Step Call for Proposals under the overarching HERMES Broad Agency Announcement (BAA) FA9300-20-S-0001. This Call follows the market research previously conducted and publicized under RFI Notice ID RFIFA930026R0001. AFRL/RJP seeks innovative research and development approaches to mature advanced Rotating Detonation Rocket Engine-Combined Cycle (RDRE-CC) propulsion systems from Technology Readiness Level (TRL) 3 to TRL 6. This research effort is intended to culminate in a ground-launched, sounding-rocket-boosted flight demonstration to validate the system's operational viability for future High-Speed Affordable Mass Munitions (HAMM). The scope encompasses: Maturation and demonstration of RDRE-CC propulsion technology through RDRE development and test, integrated RDRE-CC direct-connect and freejet testing, vehicle development, and flight demonstration.The anticipated Period of Perform

## Sources

- View on SAM.gov: https://sam.gov/opp/34305e040d3549e9aa3908d6d7dd2765/view
- Data as of 2026-11-14. Source: https://sam.gov/data-services/Contract%20Opportunities/datagov

## Cite this

"HERMES BAA CALL: Rotating Detonation Rocket Engine-Combined Cycle (RDRE-CC) Flight Demonstration, SAM.gov contract opportunity 34305e040d3549e9aa3908d6d7dd2765." samgovapi.io, https://samgovapi.io/opportunity/34305e040d3549e9aa3908d6d7dd2765, data as of 2026-11-14. Primary record: https://sam.gov/opp/34305e040d3549e9aa3908d6d7dd2765/view

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