Venus Aerospace has used a Small Business Innovation Research (SBIR) grant from NASA to develop new features of its compact rocket engine for hypersonic flights. Photo courtesy of Venus Aerospace.

Outfitted with a new type of aerospace technology, a rocket engine developed by Houston startup Venus Aerospace for hypersonic flights will undergo testing this summer.

Supported by a $155,908 federal Small Business Innovation Research (SBIR) grant from NASA, Venus Aerospace came up with a new design for nozzles — engine parts that help manage power — for its compact rocket engine. Venus Aerospace says the newly configured nozzles have “exceeded expectations” and will be incorporated into Venus’ upcoming ground-based engine testing.

“We’ve already proven our engine outperforms traditional systems on both efficiency and size,” Venus Aerospace CEO Sassie Duggleby says. “The technology we developed with NASA’s support will now be part of our integrated engine platform — bringing us one step closer to proving that efficient, compact, and affordable hypersonic flight can be scaled.”

The engine at the heart of Venus’ flight platform is called a rotating detonation rocket engine (RDRE). Venus says it’s the first U.S. company to make a scalable, affordable, flight-ready RDRE.

Unlike conventional rocket engines, Venus’ RDRE operates through supersonic shockwaves, called detonations, that generate more power with less fuel.

“This is just the beginning of what can be achieved with Venus propulsion technology,” says Andrew Duggleby, chief technology officer at Venus, founded in 2020. “We’ve built a compact high-performance system that unlocks speed, range, and agility across aerospace, defense, and many other applications. And we’re confident in its readiness for flight.”

Last fall, the company unveiled a high-speed engine system that enables takeoff, acceleration, and hypersonic cruising — all powered by a single engine. While most high-speed systems require multiple engines to operate at different speeds, Venus’ innovation does away with the cost, weight and complexity of traditional propulsion technology.

Among other applications, the Venus system supports:

  • Spacecraft landers
  • Low-earth-orbit satellites
  • Vehicles that haul space cargo
  • Hypersonic drones and missiles
Venus Aerospace announced that it's successfully ran the first long-duration engine test of their Rotating Detonation Rocket Engine in partnership with DARPA. Screenshot via Venus Aerospace

Houston space tech startup reports milestone achievement in partnership with federal agency

taking flight

A Houston tech company working on an engine to enable hypersonic flights has reported its latest milestone.

Venus Aerospace announced that it's successfully ran the first long-duration engine test of their Rotating Detonation Rocket Engine in partnership with Defense Advanced Research Projects Agency, or DARPA.

The RDRE engine Venus is working on is uniquely designed and a first in the field. It has an additional 15 percent efficiency over traditional rocket engines.

"As we continue to push towards our ultimate mission of high-speed global flight, this is an important technical milestone for having a flight-ready engine," Andrew Duggleby, CTO and co-founder of Venus Aerospace, says in the news release. "I'm incredibly proud of our team as they continue to push forward on this world-changing technology."

The test results are a big win, as the RDRE had previously only been tested in a short-duration capacity. DARPA is just one of several U.S. Government agencies that has contracts with Venus.

"The successful test is a testament to our team's dedication and expertise. We're building something special here at Venus, in large part because we have the right people and the right partners," Sassie Duggleby, CEO and co-founder of Venus Aerospace, adds. "I can't say enough about our collaboration with DARPA and the role they played in helping us make this leap forward."

Last summer, Venus added a new investor to its cap table. Andrew Duggleby founded Venus Aerospace with his wife and CEO Sassie in 2020, before relocating to the Houston Spaceport in 2021. Last year, Venus raised a $20 million series A round. Sassie joined the Houston Innovators Podcast a year ago to explain her company's mission of "home for dinner."

DARPA Partnership Long-Duration Testwww.youtube.com

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9 can't-miss Houston business and innovation events for May

where to be

There's a lot to learn this month at events around Houston. Hear from AI and energy experts or gain insights into how to tap into funding at informative panels or sessions.

Here are the Houston business and innovation events you can't miss in May and how to register. Please note: This article might be updated to add more events.

May 1 - Ion Block Party + 3rd Annual Crawfish Cookoff

Head to this special edition Block Party, featuring a crawfish cook-off competition among the Ion’s businesses. Competing teams include Ion/Rice Alliance, Transwestern, Black at Microsoft, United Protective Services, Nexus, PersonaAI, South Main Baptist, Late August, Lymbar and LickleLab/Sports Monkey.

This event is Thursday, May 1, from 4-7 p.m. at the Ion. Register here.

May 5 - Fireside Chat and Book Launch: ‘AI Made Simple: Results Made Real.’

Learn more about how AI is reshaping business and what leadership in the AI era looks like at the launch of Kathleen Perley’s book, AI Made Simple: Results Made Real, hosted by Rice Business Executive Education. Perley is founder and CEO of DemystifAI and an instructor and advisor at Rice University. She will sit down with Marie Myers, CFO of Hewlett Packard Enterprise, for a discussion and will be signing copies of her book after the fireside chat.

This event is Monday, May 5, from 5:30-7:30 p.m. at the Ion. Register here.

May 6 - Houston’s AI-Driven Data Center Boom: Investment, Innovation, and Policy

In light of Houston’s growing influence as a data center hub, the Greater Houston Partnership will present an informative panel focused on the investment landscape, technological advancements, and policy considerations shaping the future of AI-driven data centers in Houston. Panelists include leaders from Moelis, Quanta, and the Houston Northwest Chamber of Commerce.

This event is Tuesday, May 6, from 11:30 a.m.-1 p.m. at Partnership Tower. Register or become a member here.

May 6 - Doing Business with the Federal Government - The Woodlands

The SBA Houston District Office, in collaboration with Sam Houston State University SBDC, will host an informative session to share insights on how small business owners can work with the U.S. government. Topics include how the government buys goods and services, the SBA’s role in government contracting, federal government contracting programs, the advantages of small business set-asides, marketing your business, identifying federal opportunities and more.

This event is Tuesday, May 6, from 10-11:30 a.m. at Sam Houston State University - The Woodlands Center. Register here.

May 8 - Industrious Launch Party

Attend the opening of Industrious’ new coworking space at the Ion. Anteendees can tour the new space, meet the team, enjoy a silent disco and network. Light bites will be provided by Late August, Lymbar, and Stuff’d.

This event is Thursday, May 8, from 5-8 p.m. at the Ion. Register here

May 12 - Headshot Happy Hour 

Hosted by Natalie Presnediue, Headshot Happy Hour caters to entrepreneurs, business owners, creatives and professionals who want to enhance or update their online presence. Each session includes a 15- to 20-minute mini shoot and three professionally retouched images. Light refreshments will be served.

This event is Monday, May 12, at the Ion. Learn more here.

May 12-14 - Greentown Labs’ Investor Activation Series

Greentown Labs will host a three-day series for investors interested in climatetech, centered around the incubator’s invitation-only Manufacturing Sector Pitch Day. Panels throughout the event will focus on early-stage investment, emerging opportunities, and tools for investors, presented by organizations like Houston Angel Network and New Climate Ventures.

This event begins Monday, May 12, at Greentown Labs. Register here.

May 13 - Women in Venture Investing: Expanding Influence and Building Wealth

Houston Angel Network will host a luncheon focused on how women can enter and thrive in the venture capital space. Anthea Zhang, professor of strategic management at Rice University, will present the keynote address along with a panel featuring leaders from Hunton, JP Morgan Private Bank, HRSS CPAs, Weathergage Capital, and Houston Angel Network.

This event is Tuesday, May 13, from 11 a.m.-1:30 p.m. at the Junior Leauge of Houston. Get tickers here.

May 28-30 - CHARGE North America

This intimate, immersive experience is tailored to forward-thinking energy professionals. The conference includes hands-on interactive workshops led by top strategists; real-world case studies; and insights from leading speakers on resilient branding, consumer expectations, and climate action. Attendees will engage in panel discussions on sustainability and energy diversification and enjoy exclusive networking opportunities with global executives and innovators.

This event begins Wednesday, May 28, at the Ion. Register here.

Houston clean energy co. wins $50 million at Elon Musk-backed competition

xprize winners

Houston-based Mati Carbon has won the $50 million grand prize in the XPRIZE Carbon Removal competition, backed by Elon Musk’s charitable organization, The Musk Foundation.

Mati was selected in 2024 as one of 20 global finalists. The company removes carbon through its Enhanced Rock Weathering (ERW) program that works with agricultural farms in Africa and India.

The 3-year-old startup accelerates the natural process of rock weathering (ERW) by applying pulverized basalt to croplands of partnered smallholder farmers, free of charge. Mati says the farmers it partners with are some of the most vulnerable to the impacts of climate change.

“Winning this XPRIZE competition is an incredible honor and a definitive validation of our research and development, and building out the infrastructure needed to impact millions of farmers while delivering verifiable carbon dioxide removal at a gigaton scale,” Mati Carbon Founder and CEO Shantanu Agarwal, said in a news release. “I couldn’t be prouder, not just of the Mati team, but of our collaborators, research partners and the thousands of smallholder farmers who let us be part of their lives. This XPRIZE recognition will allow us to collaborate with local partners to accelerate the use of enhanced rock weathering across the Global South.”

Mati reports that it plans to use the award to “scale its efforts working with smallholder farmers worldwide.” Apart from the XPRIZE funding, Mati plans to grow its model through the sale of CDR credits. According to the company, it counts Shopify, Stripe, and H&M among its early carbon credit buyers.

“Mati Carbon’s deployments bolster farmers’ livelihoods through improved soil health, reduced agricultural inputs, and increased income at zero cost to them. Mati Carbon’s team has developed a scientifically rigorous approach to monitoring and verification, and excelled across each of XPRIZE’s prize evaluation criteria – operational, sustainability, and cost metrics – giving the XPRIZE judges the highest confidence in Mati Carbon’s solution’s long-term scalability,” the XPRIZE judges wrote.

Houston-based Vaulted Deep took home the second-runner-up prize in the competition and $8 million for its organic waste storage process. The company provides permanent carbon storage by injecting nonhazardous organic waste deep underground. It spun off with $8 million in seed funding from Advantek Waste Management Services in 2023.

"Our approach is grounded in geomechanical injection techniques that have been safely deployed globally for decades by our team and predecessors," Omar Abou-Sayed, co-founder and executive chairman of Vaulted, said in a separate release. "XPRIZE recognized that this is a proven approach—already in use, delivering impact, and built on the kind of reliability the industry needs to scale responsibly."

Launched in 2021, the four-year XPRIZE Carbon Removal competition challenged global innovators to deploy scalable solutions for removing carbon dioxide from the atmosphere and oceans. More than 1,300 teams from 88 countries competed. XPRIZE finalists were required to remove at least 1,000 tonnes of CO2 over a one-year demonstration period.

French company NetZero took home the first-runner-up prize of $15 million, and London-based UNDO came in as third-runner-up with a $5 million prize.

Since the announcement of the XPRIZE Carbon Removal competition, the Musk-led Department of Government Efficiency has cut climate funding for agencies, projects and research. While the Musk Foundation sponsored the XPRIZE event, it is not affiliated with the California-based organization, according to the Associated Press.

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This story originally appeared on our sister site, EnergyCapitalHTX.com.

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