S²MARTS Sirena Payload Adapter and Demo (26-06)

Executive Summary

NSWC Crane is preparing an OTA prototype opportunity to redesign and deliver a flight-ready payload adapter that integrates the Sirena Payload Delivery Vehicle with a government-furnished tactical boost vehicle. The Request for Solutions has not been released, so no deadline is set yet. NSTXL membership is required.

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The work runs from integration design through a flight-ready prototype and demonstration, so teams that combine mechanical, electrical and avionics integration with flight hardware manufacturing are the natural fit.

Solicitation at a Glance

• Agency: Department of War, with Naval Surface Warfare Center (NSWC) Crane
• Opportunity: Sirena Payload Adapter and Demonstration
• Project Number: S²MARTS Project No. 26-06
• Award Vehicle: Other Transaction Authority (OTA) prototype awards through S²MARTS, managed by NSTXL
• Funding: not yet published
• Technology Maturity: Flight-ready prototype and tactical demonstration
• Due Date: Request for Solutions not yet released (coming soon notice posted May 28, 2026)

Think your company qualifies? Talk with BW&CO before the Request for Solutions is released.

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What Is Project 26-06?

Project 26-06 is a coming soon S²MARTS prototype opportunity focused on payload integration. It asks for innovative approaches to redesign and deliver a flight-ready payload adapter that joins the Sirena Payload Delivery Vehicle (PDV) to a government-furnished tactical boost vehicle.

What Problem Is NSWC Crane Trying to Solve?

The Department of War needs the Sirena PDV integrated with a tactical boost vehicle. That takes a flight-ready adapter and a demonstration that proves the integration, supporting payload integration and tactical demonstration capabilities.

Priority Capability Areas: What NSWC Crane Is Looking For

• Payload integration: payload integration and interface technologies
• Subsystem integration: advanced mechanical, electrical and subsystem integration approaches
• Hardware design: modular and scalable hardware design concepts
• Flight hardware: flight-ready prototype development and manufacturing
• Avionics: avionics, controls and mission systems integration
• Transition: approaches that support demonstration, transition and production readiness

Funding and Award Terms

• Instrument: Other Transaction Authority (OTA) prototype awards through S²MARTS
• Period of performance: finalized after the Request for Solutions, based on the proposed technical approach and performer timelines
• Amounts: not yet published

Eligibility Requirements and Participation

• NSTXL membership: All respondents must have an active NSTXL membership to submit a solution to any S²MARTS opportunity. NSTXL asks applicants to allow one business day for a new application (membership@nstxl.org).
• Documents: the full coming soon notice is released through the key document request form on the NSTXL page

How to Apply

• Confirm NSTXL membership: apply or check status through membership@nstxl.org
• Request the full notice: use the key document request form on the Project 26-06 page
• Build the team: combine integration design, avionics and flight hardware manufacturing
• Watch for the RFS: the submission format and deadline will be in the Request for Solutions

What Happens After You Submit?

• Request for Solutions: NSWC Crane will release the RFS with submission details
• Award: selected performers receive OTA prototype agreements
• Demonstration: the effort ends in a flight-ready adapter and tactical demonstration

Is This Opportunity a Good Fit for Your Company?

It fits aerospace structures and integration firms, missile and launch vehicle hardware suppliers, avionics and flight controls companies, and small teams that have delivered flight-qualified hardware on tight schedules.

How BW&CO Can Help

BW&CO has helped deep-tech and dual-use founders secure more than $350M in non-dilutive funding. For S²MARTS prototype projects like Project 26-06, we help you:

• Check the fit: match your integration and flight hardware experience to the focus areas
• Get set up on NSTXL: membership and documents ready before the RFS
• Build the team: cover design, avionics and manufacturing
• Write the solution: a credible adapter design, test and demonstration plan
• Frame the OTA: scope, milestones and price for a prototype agreement

Plan Your Project 26-06 Submission

Frequently Asked Questions

Is Project 26-06 open now?

Not yet. The coming soon notice was posted May 28, 2026. The Request for Solutions will set the deadline.

What is the Sirena PDV?

The Sirena Payload Delivery Vehicle. The adapter must integrate it with a government-furnished tactical boost vehicle.

Who is running it?

The Department of War with NSWC Crane, through the S²MARTS OTA that NSTXL manages.

What award type is planned?

Other Transaction Authority (OTA) prototype awards.

How much funding is available?

The public notice does not list funding amounts.

Do I need to be an NSTXL member?

Yes. All respondents must have an active NSTXL membership to submit.

What does the prototype need to be?

A flight-ready payload adapter, carried through demonstration, with attention to transition and production readiness.

Where do I get the full notice?

Fill out the key document request form on the Project 26-06 page on nstxl.org.

Can BW&CO help with a Project 26-06 submission?

Yes. We help teams confirm fit, get set up on NSTXL, and write the solution. Book a call with our team.

Source: Project No. 26-06 on NSTXL