Bid Banana
PricingBid helpAPILog inStart free trial
Log inStart free trial

Learn more

  • Federal contracts (SAM.gov)The Ultimate Guide to SAM.gov Registration
  • Compliance checkHow to Ensure RFP Compliance
  • How to answer an RFPChoosing and Responding to Government Bids
More aerospace and defense bids →Must-win bid? Bring in The Bid Lab →
Bid Banana
SearchPricingBid helpBrowse bidsAPISupportFAQPrivacy PolicyTerms of UseAI Use Policy

This website and its content is copyright of The Bid Lab © 2026. The Bid Lab is a trademark of Bid Lab, LLC. All rights reserved.

  1. Bid Banana
  2. ›Closed bids
  3. ›Federal
  4. ›Cathode Advancements in Science and Technology for Oxygen…

U.S. Department Of Defense·Virginia

Cathode Advancements in Science and Technology for Oxygen Resistance (CASTOR)

Closes 4/27/2026$900kRequest for Proposal
Bid source

This opportunity has closed.

Bid Banana tracks 1.6M+ bids and awards across all 50 states. Save a search and we'll email your new matches, daily or weekly — so the next one reaches you with time to bid.

Get alerted next time

Description

The Defense Advanced Research Projects Agency (DARPA) is seeking proposals for the development of efficient, high-performance, long-lived oxygen-compatible cathodes for use in air-breathing very low earth orbit (VLEO) electric propulsion (EP) systems. The goal of the CASTOR program is to develop new cathodes capable of supporting EP thrusters operating on air or water for 1,000 hours or more while matching the performance of today’s cathodes operating on noble gases. Proposers should submit innovative basic or applied research proposals that address the technical challenges and objectives outlined in the solicitation. • The program consists of two phases: a 9-month concept exploration with benchtop testing in ambient gas and plasma conditions, and a 12-month design refinement culminating in delivering a cathode test article to the Government. • Performers will have access to the Naval Research Laboratory (NRL) as a Government test facility during Phase 1 and Phase 2. • The total award value for the combined Phase 1 and Phase 2 is limited to $900,000. • Proposers should prioritize reasoned arguments, evidence, and calculations to justify claims, and minimize marketing language and repeating the language from the solicitation.

Attached files

Contact

[email protected]

Key dates

Opened
3/13/2026
Closes
4/27/2026
Duration
21 months

Last updated

Details

Type
Request for Proposal
Industry
Aerospace and Defense
NAICS
541715
Solicitation №
DARPA-PA-25-07-03

Budget estimate

$0 – $900,000

The total award value for the combined Phase 1 and Phase 2 is limited to $900,000, which includes Government funding and performer cost share, if required or proposed. This amount will be the maximum budget for the selected proposer. The actual budget may be lower, depending on the proposed budget and the negotiation with DARPA. The budget will be tied to the achievement of milestones and the delivery of the cathode test article.

AI estimate from the solicitation

Similar opportunities

Matched by Bid Banana AI™

Bid Banana · 1.6M+ bids and awards 🍌

You found this one too late. Don't find the next one too late.

Bid Banana searches open government bids across all 50 states, updated daily. Save a search once and we email you your new matches, daily or weekly, while there is still time to win them.

1.6M+
bids & awards
All 50
states
4,000+
agencies
Start your 7-day free trial

Plans from $49.99/month. Cancel anytime, no setup fees.

Built by The Bid Lab, answering RFPs since 2017.

National Aeronautics And Space Administration·Alabama

Top match · 73%

TECHNOLOGY TRANSFER OPPORTUNITY: Solid-State System Efficiently Generates Purified O2 (MSC-TOPS-148)

Closes 8/10/2027Opened 8/10/2026

National Aeronautics And Space Administration·United States of America

69% match

TECHNOLOGY TRANSFER OPPORTUNITY: Solid-State System Efficiently Generates Purified O2 (MSC-TOPS-148)

Closes 8/10/2027Opened 8/10/2026

Power Authority of New York·New York

68% match

CATHODIC PROTECTION SERVICES

Closes 11/3/2026Opened 10/13/2026

U.S. Department Of Energy·Ohio

67% match

TECHNOLOGY LICENSING OPPORTUNITY: M-Resistor

Closes 12/8/2026Opened 6/8/2026

National Aeronautics And Space Administration·Alabama

67% match

TECHNOLOGY TRANSFER OPPORTUNITY: Carbon Fiber Sleeve Tempers Battery Thermal Runaway (MSC-TOPS-119)

Closes 8/10/2027Opened 8/10/2026

U.S. Department Of Energy·Idaho

67% match

Technology Licensing Opportunity: Electrochemical Recycling Technology for Sustainable Recovery of Tellerium and Cadmium from CdTE Photovoltaics

Closes 11/8/2026Opened 8/24/2026

U.S. Department Of Energy·Idaho

67% match

Technology Licensing Opportunity: Electrochemical Recycling Technology for Sustainable Recovery of Tellerium and Cadmium from CdTE Photovoltaics

Closes 11/8/2026Opened 9/8/2025

U.S. Department Of Energy·Ohio

66% match

TECHNOLOGY LICENSING OPPORTUNITY: PBI High-Temperature Hollow Fiber Membranes

Closes 12/4/2026Opened 6/5/2026

National Aeronautics And Space Administration·United States of America

66% match

TECHNOLOGY TRANSFER OPPORTUNITY: Carbon Fiber Sleeve Tempers Battery Thermal Runaway (MSC-TOPS-119)

Closes 8/10/2027Opened 8/10/2026

National Aeronautics And Space Administration·United States of America

66% match

TECHNOLOGY TRANSFER OPPORTUNITY: Lunar Experiment Support System and Handling (LESSH) Battery Charger Module (BCM) (GSC-TOPS-362)

Closes 8/11/2027Opened 8/11/2026

U.S. Department Of Energy·Ohio

65% match

High-Capacity Hydrogen and Hydrogen Isotope Getters

Closes 11/14/2026Opened 8/14/2026

National Aeronautics And Space Administration·Alabama

65% match

TECHNOLOGY TRANSFER OPPORTUNITY: Lunar Experiment Support System and Handling (LESSH) Battery Charger Module (BCM) (GSC-TOPS-362)

Closes 8/11/2027Opened 8/11/2026

U.S. National Energy Technology Laboratory·United States of America

65% match

Improved Oil and Gas Recovery and Produced Water Management Technologies

Rolling / TBD closeOpened 7/6/2026

National Aeronautics And Space Administration·United States of America

65% match

TECHNOLOGY TRANSFER OPPORTUNITY: Capacitive Impedance Water Ice Sensor (CIWIS) (LEW-TOPS-183)

Closes 8/10/2027Opened 8/10/2026

U.S. Department Of Energy·Idaho

65% match

Technology Licensing Opportunity: Room-Temperature Electrochemical Metallization of Rare Earth Elements

Closes 11/15/2026Opened 7/29/2026

U.S. National Institutes of Health·United States of America

65% match

Catalyze: Product Definition Medical Device Prototype Optimization (R33 - Clinical Trial Not Allowed)

Closes 12/23/2027Opened 11/22/2024

U.S. National Institutes of Health·United States of America

65% match

Catalyze: Enabling Technologies and Transformative Platforms for HLBS Research (R33 - Clinical Trials Not Allowed)

Closes 12/23/2027Opened 1/24/2022

National Aeronautics And Space Administration·Alabama

65% match

TECHNOLOGY TRANSFER OPPORTUNITY: Capacitive Impedance Water Ice Sensor (CIWIS) (LEW-TOPS-183)

Closes 8/10/2027Opened 8/10/2026

U.S. Department Of Defense·Florida

65% match

CATHODIC PROTECTION SURVEY/INVENTORY/ASSESSMENT SERVICES

Closes 11/23/2026Opened 10/21/2026

U.S. Department Of Energy·Ohio

65% match

TECHNOLOGY LICENSING OPPORTUNITY: Heat Pipe Reactor Fire Mitigation and Suppression System

Closes 12/19/2026Opened 6/19/2026

U.S. Department Of Energy·New Mexico

65% match

TECHNOLOGY LICENSING OPPORTUNITY: GetterGauge

Closes 3/5/2027Opened 10/5/2026

U.S. Department Of Defense·Virginia

65% match

Environmental Security Technology Certification Program (ESTCP) – Energy and Environmental Technology Demonstrations – Open Topics BAA

Closes 8/20/2027Opened 8/21/2026

U.S. National Institutes of Health·United States of America

65% match

Catalyze: Product Definition for Small Molecules, Biologics and Combination Products - Target Identification and Validation, and Preliminary Product/Lead Series Identification (R61/R33 Clinical Trials Not Allowed)

Closes 12/23/2027Opened 11/22/2024

U.S. Department Of Energy·Ohio

64% match

TECHNOLOGY LICENSING OPPORTUNITY: SiloGetter

Closes 3/1/2027Opened 8/17/2026

U.S. Department Of Defense·Maryland

64% match

CPE CBRND Seeking Physical Vapor Deposition (PVD) of Silicon Dioxide (SiO2) on Aluminum Flakes for Screening Obscuration Module - Multispectral (SOM-M)

Closes 11/13/2026Opened 9/29/2026