Houston aerospace co. soars with first U.S. test flight of hypersonic engine

taking off

Venus Aerospace successfully completed the flight test of its hypersonic engine, the first of an American-developed engine of its kind. Photo courtesy Venus Aerospace

Houston-based Venus Aerospace successfully completed the first U.S. flight test of its proprietary engine at a demonstration at Spaceport America in New Mexico.

Venus’ next-generation rotating detonation rocket engine (RDRE) is supported by a $155,908 federal Small Business Innovation Research (SBIR) grant from NASA and aims to enable vehicles to travel four to six times the speed of sound from a conventional runway. The recent flight test was the first of an American-developed engine of its kind.

"With this flight test, Venus Aerospace is transforming a decades-old engineering challenge into an operational reality,” Thomas d'Halluin, managing partner at Airbus Ventures, an investor in Venus, said in a news release. “Getting a rotating detonation engine integrated, launch-ready, and validated under real conditions is no small feat. Venus has shown an extraordinary ability to translate deep technical insight into hardware progress, and we're proud to support their bold approach in their attempt to unlock the hypersonic economy and forge the future of propulsion."

Venus’ RDRE operates through supersonic shockwaves, called detonations, that generate more power with less fuel. It is designed to be affordable and scalable for defense and commercial systems.

The RDRE is also engineered to work with the company's air-breathing detonation ramjet, the VDR2, which helps enable aircraft to take off from a runway and transition to speeds exceeding Mach 6. Venus plans for full-scale propulsion testing and vehicle integration of this system. Venus’ ultimate goal is to develop a Mach 4 reusable passenger aircraft, known as the Stargazer M4.

"This milestone proves our engine works outside the lab, under real flight conditions," Andrew Duggleby, Venus co-founder and chief technology officer, said in the release. "Rotating detonation has been a long-sought gain in performance. Venus' RDRE solved the last but critical steps to harness the theoretical benefits of pressure gain combustion. We've built an engine that not only runs, but runs reliably and efficiently—and that's what makes it scalable. This is the foundation we need that, combined with a ramjet, completes the system from take-off to sustained hypersonic flight."

The hypersonic market is projected to surpass $12 billion by 2030, according to Venus.

"This is the moment we've been working toward for five years," Sassie Duggleby, CEO and co-founder of Venus Aerospace, added in the release. "We've proven that this technology works—not just in simulations or the lab, but in the air. With this milestone, we're one step closer to making high-speed flight accessible, affordable, and sustainable."

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.

Houston space tech company develops new hypersonic engine features with NASA funding

testing 1, 2, 3

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 will use an investment from America's Frontier Fund to advance its VDR2 engine. Photo courtesy of Venus Aerospace

Houston hypersonic engine company lands investment from deep-tech firm

super speed

Hypersonic engine technology company Venus Aerospace announced an investment for an undisclosed amount from deep-tech investment firm America's Frontier Fund (AFF).

Venus plans to use the funds to advance its VDR2 engine, which has the potential to support a commercial flight from Los Angeles to Tokyo in under two hours, according to a statement.

"AFF's investment in Venus Aerospace underscores our focus on supporting American companies that are revolutionizing industries of the future," Jordan Blashek, co-founder and managing partner of AFF, said in a news release. "With recent hypersonic advancements from China and Russia, safeguarding American innovation and securing our industrial base has never been more urgent. Venus Aerospace is poised to redefine hypersonic flight and ensure America's continued leadership in aerospace innovation."

Venus plans to integrate components of its RDRE engine into the advanced VDR2 engine, increasing efficiency with air-augmentation technology capable of 2,000 pounds of thrust. This will allow the VDR2 engine to operate at wider ranges of speeds and altitudes. The company plans to ground-test the VDR2 in 2025.

Venus also plans to make history this year by conducting the first atmospheric flight of its RDRE engine, which has applications in the space and defense industries.

"AFF's commitment to pioneering technological advancements aligns seamlessly with our mission to enhance American competitiveness in hypersonics,” Sassie Duggleby, CEO and co-founder of Venus Aerospace, added in the news release. “Their deep-tech expertise and proven track record in scaling innovative companies will be invaluable as we work to achieve our goals."

Venus Aerospace believes these innovations can “strengthen U.S. leadership in aerospace, defense, and energy innovation."

Venus also aims to use its engine technology to power the Stargazer M4, the world's first Mach 4 reusable commercial aircraft and a prime example of advanced propulsion systems.

The company launched in 2020 and has gained $78.3 million in total investments, according to Pitchbook data.

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12+ can't-miss Houston business and innovation events for September

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Editor's note: Houston's business and innovation events are back in session. From the return of Houston Energy and Climate Startup Week to a send-off for an impactful innovation leader and several health conferences, here's what not to miss and how to register. Please note: this article may be updated to include additional event listings.

Sept. 5-7 — Houston Hackathon

Impact Hub Houston is bringing back the Houston Hacakthon this month, where developers of all skill sets can work together to propose solutions to some of the Bayou City’s most pressing issues. The event is focused on ideating, designing, and developing both policy-based and tech solutions to improve Houston.

This event starts Saturday, Sept. 5, at noon at the Ion. Register here.

Sept. 8 — Community Celebration: A Send-Off for Paul Cherukuri

Come out to the Ion to celebrate Paul Cherukuri, Rice’s first chief innovation officer, whose visionary leadership has left a lasting impact on Houston’s innovation ecosystem. Cherukuri is leaving the university to accept a position at the University of Virginia. Hear remarks from Cherukuri and enjoy a networking reception following the talk.

This event is Monday, Sept. 8, from 2:30-5:00 p.m. at the Ion. Register here

Sept. 11 — Houston Methodist Leadership Speaker Series – Dr. Evan Collins

The Houston Methodist Tech Hub at the Ion will host its recurring leadership speaker series, this time featuring Dr. Evan Collins, chief of the Houston Methodist Hand & Upper Extremity Center at Houston Methodist and the Houston Methodist Center for Innovation's first innovator-in-residency. Collins will present on the creative process of innovation.

This event is Thursday, Sept. 11, from 4:45-6 p.m. at the Ion. Register here.

Sept. 12 — Future of Space

The Greater Houston Partnership’s 2025 Future of Space event will feature a keynote address by Vanessa E. Wyche, acting associate administrator of NASA. In her new role, Wyche serves as NASA’s chief operating officer, leading more than 18,000 employees and overseeing an annual budget exceeding $25 billion. Discussions will highlight how Houston’s space ecosystem is driving economic growth, technological innovation and new opportunities across the region and the nation.

The event is Friday, Sept. 12, from noon-1:30 p.m. at the Royal Sonesta. Find more information here.

Sept. 15-19 — Houston Energy and Climate Startup Week

Houston Energy and Climate Startup Week returns for its second year, with panels, happy hours and pitch days focused on the energy transition. The week features major events, including the Energytech Nexus Pilotathon, the Rice Alliance Energy Tech Venture Forum, Halliburton Labs Finalists Pitch Day and many others. See a preview of the week on our sister site EnergyCapitalHTX.com and learn more in the event listings below.

This event starts Monday, Sept. 15. The Ion District will host many of the week's events. Find more information here.

Sept. 16 — Energytech Nexus Pilotathon

Grab breakfast and take in keynotes and panels by leaders from New Climate Ventures, V1 Climate, Halliburton, Energy Tech Nexus and many others during Houston Energy & Climate Week. Then hear pitches during the Pilotathon, which targets startups ready to implement pilot projects within six to 12 months.

This event is Tuesday, Sept. 16, from 8 a.m.-5 p.m. at GreenStreet. Get tickets here.

Sept. 16 — Meet the Activate Houston Cohort 2025 Fellows

Meet Activate's latest cohort, which was named this summer, and also learn more about its 2024 group during Houston Energy & Climate Week.

This event is Tuesday, Sept. 16, at 5 p.m. at the Ion. Register here.

Sept. 17 — Green ICU Conference: Sustainability in Health Care for a Healthier Future

Houston Methodist will host its inaugural Green ICU Conference during Houston Energy & Climate Week. The conference is designed to bring together healthcare professionals, industry leaders, policymakers and innovators to explore solutions for building a more sustainable healthcare system.

This event is Wednesday, Sept. 17. from 8 a.m.-3 p.m. at TMC Helix Park. Register here.

Sept. 18 — Rice Alliance Energy Tech Venture Forum

Hear from clean energy startups from nine countries and 19 states at the 22nd annual Energy Tech Venture Forum during Houston Energy & Climate Week. The 12 companies that were named to Class 5 of the Rice Alliance Clean Energy Accelerator will present during Demo Day to wrap up their 10-week program. Apart from pitches, this event will also host keynotes from Arjun Murti, partner of energy macro and policy at Veriten, and Susan Schofer, partner at HAX and chief science officer at SOSV. Panels will focus on corporate innovation and institutional venture capital.

This event is Thursday, Sept. 18, from 7:30 a.m.-5 p.m. at Rice University’s Jones Graduate School of Business. Register here.

Sept. 18 — ACCEL Year 3 Showcase

Celebrate Advancing Climatetech and Clean Energy Leaders Program, or ACCEL, an accelerator program for startups led by BIPOC and other underrepresented founders from Greentown Labs and Browning the Green Space. Two Houston companies and one from Austin are among the eight startups to be named to the 2025 group. Hear startup pitches from the cohort, and from Greentown's Head of Houston, Lawson Gow, CEO Georgina Campbell Flatter and others. This event is part of Houston Energy & Climate Week.

This event is Thursday, Sept. 18, from 5-8 p.m. at Greentown Labs. Get tickets here.

Sept. 19 — Halliburton Labs Finalists Pitch Day

Hear from Halliburton Labs' latest cohort of entrepreneurs during Houston Energy & Climate Week. The incubator aims to advance the companies’ commercialization with support from Halliburton's network, facilities and financing opportunities. Its latest cohort includes one company from Texas.

This event is Friday, Sept. 19, from 8 a.m.-noon at The Ion. Register here.

Sept. 21-25 — AI in Health Conference

The Ken Kennedy Institute at Rice University will present the fourth annual AI in Health Conference, which aims to bridge the gap between artificial intelligence and real-world health outcomes. The event will explore the current landscape of artificial intelligence in health and present a research-driven outlook for the future of computational health innovation.

This conference is from Tuesday, Sept. 23, to Wednesday, Sept. 24. Additional workshops will be offered on Monday, Sept. 22, and Thursday, Sept. 25. The events will be held at the BioScience Research Collaborative at Rice University. Find more information here.

Sept. 25 — Industrial AI Nexus Connect

InnovateEnergy and Industrial AI Nexus will host a talk by Matthew Alberts, manager of innovation and emerging technologies at Southern Company and author of "The Gen AI Manufacturing Revolution: Smarter Factories, Enhanced Products, and Reduced Costs." Alberts will present “The Gen AI Revolution," followed by happy hour and a complimentary book signing.

This event is Thursday, Sept. 25, from 5:30-7:30 p.m. at the Ion. Register here.

Texas is the 4th hardest working state in America, report finds

Ranking It

It's no secret that Texans are hardworking people. To align with the Labor Day holiday, a new WalletHub study asserts that the Lone Star State is one of the five most hardworking states in America for 2025.

The report ranked Texas the fourth most hardworking state this year, indicating that its residents are working harder than ever after the state fell into seventh place in 2024. Texas previously ranked No. 4 in 2019 and 2020, slipped into No. 5 in 2021 and 2022, then continued falling into sixth place in 2023. But now the state is making its way back to the top of the list.

WalletHub's analysts compared all 50 states based on "direct" and "indirect" work factors. The six "direct" work factors included each state's average workweek hours, employment rates, the share of households where no adults work, the share of workers leaving vacation time unused, and other data. The four "indirect" work factors consisted of workers' average commute times, the share of workers with multiple jobs, the annual volunteer hours per resident, and the average leisure time spent per day.

North Dakota landed on top as the most hardworking state in America for 2025 for another year in a row, earning a score of 66.17 points out of a possible 100. For comparison, Texas ranked No. 4 with 57.06 points. Alaska (No. 2), South Dakota (No. 3), and Hawaii (No. 5) round out the top five hardest working states.

Across the study's two main categories, Texas ranked No. 5 in the "direct" work factors ranking, and earned a respectable No. 18 rank for its "indirect" work factors.

Broken down further, Texans have the second-longest average workweek hours in America, and they have the 12th best average commute times. Texans have the 6th lowest amount of average leisure time spent per day, the report also found.

According to the study's findings, many Americans nationwide won't take the chance to not work as hard when presented with the opportunity. A 2024 Sorbet PTO report found 33 percent of Americans' paid time off was left unused in 2023.

"While leaving vacation time on the table may seem strange to some people, there are plenty of reasons why workers choose to do so," the report's author wrote. "Some fear that if they take time off they will look less dedicated to the job than other employees, risking a layoff. Others worry about falling behind on their work or are concerned that the normal workflow will not be able to function without them."

The top 10 hardest working states are:

  • No. 1 – North Dakota
  • No. 2 – Alaska
  • No. 3 – South Dakota
  • No. 4 – Texas
  • No. 5 – Hawaii
  • No. 6 – Virginia
  • No. 7 – New Hampshire
  • No. 8 – Wyoming
  • No. 9 – Maryland
  • No. 10 – Nebraska
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This story originally appeared on CultureMap.com.

Houston co. makes waves in brain health and more innovation news to know

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Editor's note: The top innovation news for the second of half of August includes the Inc. 5000, a big contract from NASA, a new energy accelerator's launch, and innovative brain health treatment. Here are the five most-read InnovationMap stories from August 15-31:

1. How a Houston company is fighting anxiety, insomnia & Alzheimer’s through waveforms

Nexalin develops non-invasive devices that help reset networks in the brain associated with symptoms of anxiety and insomnia. Photo via Getty Images.

A Houston-based company is taking a medicine-free approach to target brain neurologically associated with mental illness. Nexalin Technology’s patented, FDA-cleared frequency-based waveform targets key centers of the midbrain to support the normalization of neurochemicals through a process known as Transcranial Alternating Current Stimulation (tACS). Delivered via a non-invasive device, the treatment gently stimulates the hypothalamus and midbrain, helping to “reset networks associated with symptoms” of anxiety and insomnia. Early clinical evidence suggests this approach can promote healthier brain function and improved sleep. Continue reading.

2. Houston innovation hub announces first cohort for energy-focused accelerator

Alabama-based Accelerate Wind is a member of the COPILOT cohort. Courtesy photo

Energytech Nexus, a Houston-based hub for energy startups, has named its inaugural cohort of 14 companies for the new COPILOT accelerator. The eight-month COPILOT program offers mentorship, training and networking for startups. Program participants will be tasked with developing pilot projects for their innovations. Two Houston startups are members of the first COPILOT class. Continue reading.

3. Houston foundation doles out $700K for Texas chemical research

The Welch Foundation has awarded funding through two of its newest grant programs. Photo via Getty Images.

Houston-based The Welch Foundation has issued $700,000 in additional funding to support chemical research through two of its newest grant programs. The foundation has named the recipients of its Welch eXperimental (WelchX) Collaboration Retreat and Pilot Grants and the Welch Postdoctoral Fellows of the Life Sciences Research Foundation Grants. The WelchX grants were awarded to teams of two Texas researchers who presented "innovative and collaborative ideas" addressing challenges in the clean energy space, according to the foundation. Continue reading.

4. Houston tech company secures $450M NASA contract

Barrios Technology has secured a two-year contract with NASA. Photo via Getty Images.

NASA’s Johnson Space Center awarded Houston-based aerospace technology and engineering services company Barrios Technology the Mission Technical Integration Contract (MTIC). The two-year contract is worth $450 million and will begin Oct. 1, 2025. Barrios will provide technical and management support to some of NASA’s human spaceflight programs, which include the Orion and Gateway programs, the International Space Station (ISS) and possibly more human spaceflight initiatives. Continue reading.

5. Fast-growing Houston tech firm leads dozens of local companies on Inc. 5000

Houston-based Action1 landed at No. 29 nationally and No. 1 in the software category in this year's Inc. 5000 ranking. Photo via Getty Images.

Dozens of Houston-area businesses appear in this year’s Inc. 5000 ranking of the 5,000 fastest-growing private companies in the U.S., with a security software provider capturing the region’s No. 1 spot on the list. Landing at No. 29 nationally and No. 1 in the software category, the top-ranked Houston-area private company is Houston-based Action1. The company recorded median revenue growth of 7,188 percent from 2021 to 2024, according to the Inc. 5000. It’s the first appearance on the Inc. 5000 list for Action1, founded in 2018. Continue reading.

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