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

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AMENDMENT 0002 - NOTICE OF THE USE OF NON-GOVERNMENT ADVISORS & RELEASE OF REVISED ATTACHMENT 2 (v2)

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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.

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END of AMENDMENT 0002

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AMENDMENT 0001 - NOTICE OF AVAILABILITY OF TECHNICAL Q&AS (DISTRIBUTION C)

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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.

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END of AMENDMENT 0001

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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 Performance (PoP) for resultant award(s) is 36 to 48 months.

2. Acquisition Structure (Two-Step BAA Process)

In accordance with RFO 35.102 and Section IV of the Hermes Master BAA, this Call utilizes a Two-Step solicitation process:

• Step 1: White Paper Submission
  Interested offerors are invited to submit a concise White Paper outlining their proposed technical architecture, compliance with the seven Specific Test Objectives (STOs), schedule milestones, and a Rough Order of Magnitude (ROM) cost. No contract awards will be made based solely upon Step 1 White Paper submissions.
• Step 2: Request for Proposals (RFP)
  The Government will evaluate White Papers using a Peer/Scientific Review process based on the criteria published in the Call. Only those offerors whose White Papers are evaluated as having high technical merit, relevance to HAMM objectives, and for which funding is available, will be formally invited to submit a full, high-fidelity Technical and Cost Proposal.

The Government anticipates completing its Step 1 White Paper evaluations and issuing notifications within approximately six (6) to eight (8) weeks following the submission closing date.

3. Submission Guidelines & Page Limits

• Format: Submissions must be in Adobe PDF format, standard business font (10-point minimum), double-spaced, with 1-inch margins.
• Page Limitations:
  • Core White Paper: Strictly limited to ten (10) pages (excluding the single, self-explanatory Title Page).
  • Technical Appendix (Optional): Offerors may include an optional appendix of up to five (5) pages, strictly restricted to engineering drawings, CAD schematics, aerothermal performance curves, test data summaries, and modeling results. (Narrative marketing or promotional text is prohibited in the appendix).
• Enforcement: Pages exceeding the stated 10+5 limits will be removed prior to evaluation and will not be reviewed.

4. Security & Access to Controlled Call Document (Distribution Statement C)

The detailed technical requirements, vehicle constraints, and Specific Test Objectives (STOs) for this Call are contained within the formal Call Document, which contains militarily critical technology and has been designated:

DISTRIBUTION STATEMENT C: Distribution authorized to U.S. Government Agencies and their contractors; Critical Technology, Export Controlled; 14 September 2026. Other requests shall be referred to AFRL/RJP, 5 Pollux Drive, Edwards AFB, CA 93524-7048.

To safeguard this Controlled Technical Information (CTI) in accordance with DoDI 5230.24 and DoDD 5230.25, the document is hosted on SAM.gov as a Controlled Attachment:

1. Eligibility: Access is restricted to certified U.S. defense contractors possessing an active DD Form 2345 (Militarily Critical Technical Data Agreement) registered under the Defense Logistics Agency (DLA) Joint Certification Program (JCP).
2. Requesting Access via SAM.gov: Prospective offerors must click the "Request Access" button next to the controlled attachment on this notice. In the justification text box, the requester must input their active Commercial and Government Entity (CAGE) Code and their JCP Certification Number.
3. Verification & Approval: Upon validation of the contractor's JCP standing by the Contracting Officer, explicit access will be approved directly in SAM.gov, allowing the authorized Data Custodian to download the document.
4. Facility Clearance Note: The performing entity must have and maintain safeguarding capability for Controlled Unclassified Information (CUI) and Secret-level data. A draft DD Form 254 will be issued to selected offerors in Step 2.

5. Submission Inquiries & Points of Contact

All Step 1 White Papers must be submitted electronically to the AFRL/AFTC White Paper Workflow Inbox no later than the date and time specified in this notice:

• Official White Paper Submission Inbox:
  AFTC.PZRA.BAAs@us.af.mil
  (All submissions must state FA9300-20-S-0001-CALL-RDRE-CC White Paper Submission in the subject line).
• Primary Contracting Officer (PZR - Administrative/Contracting Inquiries):
  Alessandra Barzaghi-Martin, CIV, DAF
  Email: alessandra.barzaghi-martin@us.af.mil
  AFRL Rocket Propulsion Division (AFTC/PZR)
  Edwards AFB, CA
• Contracting Officer (PZR - Administrative/Contracting Inquiries):
  Mathew Pierson, CIV, DAF
  Email: mathew.pierson@us.af.mil
  AFRL Rocket Propulsion Division (AFTC/PZR)
  Edwards AFB, CA
• Contracting Officer (PZR - Administrative/Contracting Inquiries):
  Kameelah Purdom, CIV, DAF
  Email: kameelah.purdom@us.af.mil
  AFRL Rocket Propulsion Division (AFTC/PZR)
  Edwards AFB, CA