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 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

This Houston company is one step closer to enabling high-speed global travel. Photo courtesy of Venus Aerospace

Houston startup with hypersonic engine tech adds new investor

it's rocket science

A Houston-based company that's developing an engine that'll enable one-hour global transportation has announced its latest investor.

Venus Aerospace released the news that Silicon Valley venture capital firm, Airbus Ventures, has joined its team of investors. The supersonic combustion engine technology — more akin to a rocket's engine than an airplane's — is revolutionary because allows for travel at a higher elevation. Jet engines rely on air outside of the aircraft to combust, and rocket engines work with a system that supplies air internally.

“Venus has developed the world’s first liquid-propellant rotating detonation rocket engine (RDRE) with a double-digit percentage increase in efficiency over standard regular engines, making the hypersonic economy possible,” says Sassie Duggleby, CEO and co-founder of Venus, in a news release. “We’re delighted to bring Airbus Ventures into the Venus family and look forward to growing our collaboration as we harness the future of hypersonic flight.”

Duggleby founded Venus Aerospace with her husband and CTO Andrew in 2020, before relocating to the Houston Spaceport in 2021. Last year, Venus raised a $20 million series A round. That round, led by Prime Movers Lab, is being used to fund tech development and initial flight testing for building its Mach 9 hypersonic drone and Mach 9 spacecraft. Venus did not disclose how much their newest investor has contributed.

“In the world of RDREs, their pioneering approach — designing, building, and demonstrating the first liquid, storable-propellant fueled rotating detonation rocket engine — unlocks advanced aircraft capabilities and opens new vistas on our whole planetary system,” says Airbus Ventures Managing Partner Thomas d’Halluin in the release. “Venus’ compact, low mass, high efficiency engine capability will have an immediate impact on lunar and martian landers, space mobility and logistics, and deep space mission proposals.

"Here on Earth today, we will see unprecedented performance gains for drones of all kinds, and more practical and faster-than-anticipated opportunities for ultra-high-speed passenger and cargo rocket plane flights,” he continues.

Venus, which as has contracts with NASA and US Defense Agencies, has plans to test its technology this summer at its headquarters in the Houston Spaceport.

“With the strong support of Airbus Ventures now joining our investor syndicate, our next round will let Venus take the final step from lab to prototype as we fly our drone to Mach 3 under RDRE power," says Andrew Duggleby, in the release. “This will include long-duration engine runs this summer at Spaceport Houston, as well as the design, build, and flight of our drone with the broader Venus team and our incredible partners.”

Houston-based Venus Aerospace has raised $20 million — and is one step closer to providing one-hour global travel. Photo courtesy of Venus Aerospace

Houston aerospace startup secures $20M series A investment round

money moves

A year after raising $3 million in seed funding, a Space City startup has closed its high-flying series A round to the tune of $20 million.

Venus Aerospace, which is working on a zero-carbon emission spaceplane that will enable one-hour global travel, closed its series A funding round led by Wyoming-based Prime Movers Lab. The firm has a few dozen breakthrough scientific companies in its portfolio, including another Houston-based, space-focused startup, Axiom Space. The round also saw participation from previous investors: Draper Associates, Boost, Saturn 5, Seraph Group, Cantos, The Helm & Tamarack Global.

Venus Aerospace was founded by Sarah "Sassie" and Andrew Duggleby, who serve as the company's CEO and CTO, respectively, in 2020 in California. The Texas A&M University alumni later moved the business into its current facilities in the Houston Spaceport.

"The U.S. is in the middle of a global race for hypersonic technology, and the breakthroughs being developed by Sassie, Andrew, and their team have numerous civilian and defense applications," says Prime Movers Lab General Partner Brandon Simmons in a news release. "Venus hit critical engine tests, vehicle design, and growth milestones that make me tremendously excited about the future of American hypersonic flight."

According to the release, the company will use the fresh funding on enhancing its three main technologies: a next-generation rocket engine, aircraft shape, and leading-edge cooling system, which allows for the Venus spaceplane to take off from existing spaceports.

"These recent advances in technology finally enable a spaceplane, a vehicle long imagined, but only now possible," says Andrew Duggleby in the release. "We will use this round of funding to get into flight testing and engine testing at Spaceport Houston. Bringing this technology forward into systems, drones and ultimately spaceplanes, it will take both new space veterans and bright new minds to solve. We've gone from impossible to hard, and this investment will allow us to knock down the next few steps."

The past year has represented significant growth for Venus, with developing contracts with the government and building out the company's team — and the company still has eight positions listed on its website. After building out and testing its technology, Venus also started a ground test campaign at Spaceport Houston.

"We are excited to continue our partnership with Prime Movers Lab and our other great investors. In the past year, with our initial funding, we have scaled from 3 people to 40. These are the world's best rocket scientists, engineers, and operators," says Sassie Duggleby in the release. "With this funding, we will continue to push forward toward our next technical milestones, hire great people, and scale our organization. We are excited to continue engineering the future of high-speed aviation."

Ad Placement 300x100
Ad Placement 300x600

CultureMap Emails are Awesome

Property Showcase

2 Houston universities excel on 2026 list of best U.S. colleges

Best in Class

Two top-tier Houston universities have been inducted into a new "hall of fame" list of the best colleges in the U.S. for 2026.

Rice University and the University of Houston were both praised in The Princeton Review's "The Best 391 Colleges: 2026 Edition."

Released August 12, the comprehensive guide annually ranks the best universities across 50 categories based on a survey of 170,000 current college students. Survey questions cover topics such as a school's academics and administration, student quality of life, politics, campus life, city life, extracurricular opportunities, and social environment.

The Princeton Review did not numerically rank the schools overall, but it does report the top 25 schools (out of the total 391) for each of the 50 different categories. The report also clarifies that while schools did not pay to be included in the guide, they could pay for a "featured" designation. Neither Houston university paid to be featured on the list.

Rice University, Houston's most prestigious private institution, appeared in the overall 391 best colleges list, and it also appeared in the regional "Best Southwest" list, the "Best Value Colleges" list, and the "Colleges That Create Futures" list. Rice's overall quality and its academic integrity are what students say are its greatest strengths. Students are additionally encouraged to think creatively — and even unconventionally — about how to approach course assignments.

"There's also an outside-the-box thinking when it comes to assessments, like 'the option to make a 30 minute scientific podcast instead of taking the final,' explains one sophomore," the school's profile says. "This isn't unusual for first-years either; one notes that 'instead of doing a bunch of writing and essays, I was tasked with creating...a TED Talk, which really lit a creative flame in me.'"

Rice students can brag about attending a school with the seventh best college newspaper and the 10th best college dorms and quality of life out of all colleges nationwide. The university's financial aid is also the ninth best in the country.

Here's how Rice fared in other Princeton Review rankings:

  • No. 14 – Top 50 Best Value Private Colleges
  • No. 14 – Lots of Race/Class Interaction
  • No. 17 – Best College Radio Station
  • No. 18 – Top 20 Best Value Private Colleges without Financial Aid
  • No. 19 – Best Science Lab Facilities
  • No. 23 – Best-Run Colleges
  • No. 25 – Students Study the Most

Rice has recently earned praise in a separate 2026 ranking of the best universities in the world, and its MBA program scored highly in The Princeton Review's 2025 best business schools list.

University of Houston also appeared in The Princeton Review's "Best Value Colleges," "Best Southwest," "Green Colleges," and "Colleges That Create Futures" lists. Students at this university also benefit from having the No. 1 undergraduate entrepreneurship program in the nation.

"Whether you're in or out-of-state, students consider their school to be 'not very expensive for the quality of education you're getting,' and the constant improvements help 'you feel like your degree is appreciating in value over time along with the school itself," the university's profile says.

Here's how University of Houston performed in other rankings:

  • No. 20 – Students Love Their School Teams
  • No. 21 – Scotch and Soda, Hold the Scotch (this list measured schools based on "the use of hard liquor" as reported by student surveys)
  • No. 22 – Cancel the Keg (this list measured "how widely beer is used" at schools based on student survey results)
  • No. 22 – Pot's Not Hot (this list ranked colleges with the "least marijuana usage based on ratings from real students about the popularity of marijuana on campus")
  • No. 25 – Most Politically Moderate Students
  • No. 42 – Top 50 Best Value Public Colleges
Unfortunately, UH ranked No. 11 in The Princeton Review's ranking of schools where financial aid is "not so great." However, there is plenty else to appreciate about this high performing university.

Other Texas universities included in The Princeton Review are:

  • University of Texas at Austin
  • Southwestern University in Georgetown
  • Texas State University in San Marcos
  • Trinity University in San Antonio
  • Texas A&M University in College Station
  • Angelo State University in San Angelo
  • Baylor University in Waco
  • Texas Christian University in Fort Worth
  • Southern Methodist University in Dallas
  • The University of Texas at Dallas in Richardson
  • University of Dallas in Irving
  • Austin College in Sherman
---

This article originally appeared on CultureMap.com.

Intuitive Machines partners with Houston college for workforce training

space training

Intuitive Machines, a Houston-based space technology, infrastructure and services company, has forged a partnership with San Jacinto College to develop a program for training workers to handle biopharmaceutical materials delivered to Earth on Intuitive Machines’ re-entry vehicle.

Intuitive Machines is working with biotech company Rhodium Scientific on the project. Rhodium, also based in Houston, is developing biomanufacturing payloads for Intuitive Machines’ re-entry vehicle.

“Delivering life-improving pharmaceuticals from orbit is only valuable with reliable recovery and processes on Earth,” Tim Crain, chief technology officer at Intuitive Machines, said in a news release. “That requires more than a spacecraft — it demands the workforce, facilities, and regulatory alignment to support safe, repeatable operations. San Jacinto College has the credibility and technical depth to make this vision a reality.”

San Jacinto College provides training certified by the National Institute for Bioprocessing Research and Training. Christopher Wild, assistant vice chancellor and vice president of biotechnology at San Jacinto College, said that with this certification and the college’s presence at Houston Spaceport, the school “is uniquely positioned to train the workforce needed (for) commercial space-based pharma recovery.”

The first-phase grant supporting Intuitive Machines’ Earth re-entry program will culminate in a full-scale mockup tailored to real payloads and use cases in early 2026.

Intuitive Machines said the collaborations with San Jacinto College and Rhodium “aim to align future landing infrastructure, research opportunities, and funding pathways that deliver lasting economic impact from space.”

Nominate top innovators for the 2025 Houston Innovation Awards by Aug. 31

Calling All Innovators

Editor's note: Houston innovators, this is your reminder that the nomination period for the 2025 Houston Innovation Awards closes on Sunday, August 31. Please provide your nominations for Houston's best and brightest innovators and innovative companies at at this link. Our panel of judges will review the nominees to determine the 2025 Houston Innovation Awards finalists and winners. Finalists will be named September 30, and winners will be revealed at our event on November 5.

---------

Calling all Houston innovators: The Houston Innovation Awards return this fall to celebrate the best and brightest in the Houston innovation ecosystem right now.

Presented by InnovationMap, the fifth annual Houston Innovation Awards will take place November 5 at TMC Helix Park.

The awards program will honor the top startups and innovators in Houston across 10 categories, and we're asking you to nominate the most deserving Houston innovators and innovative companies today.

This year's categories are:

  • Minority-founded Business, honoring an innovative startup founded or co-founded by BIPOC or LGBTQ+ representation.
  • Female-founded Business, honoring an innovative startup founded or co-founded by a woman.
  • Energy Transition Business, honoring an innovative startup providing a solution within renewables, climatetech, clean energy, alternative materials, circular economy, and beyond.
  • Health Tech Business, honoring an innovative startup within the health and medical technology sectors.
  • Deep Tech Business, honoring an innovative startup providing technology solutions based on substantial scientific or engineering challenges, including those in the AI, robotics, and space sectors.
  • Startup of the Year (People's Choice), honoring a startup celebrating a recent milestone or success. The winner will be selected by the community via an interactive voting experience.
  • Scaleup of the Year, honoring an innovative later-stage startup that's recently reached a significant milestone in company growth.
  • Incubator/Accelerator of the Year, honoring a local incubator or accelerator that is championing and fueling the growth of Houston startups.
  • Mentor of the Year, presented by Houston Community College, honoring an individual who dedicates their time and expertise to guide and support budding entrepreneurs.
  • Trailblazer, honoring an innovator who's made a lasting impact on the Houston innovation community.

Nominations may be made on behalf of yourself, your organization, and other leaders in the local innovation scene. The nomination period closes on August 31, so don't delay — nominate today at this link, or fill out the embedded form below.

Our panel of esteemed judges will review the nominations, and determine the finalists and winners. Finalists will be unveiled on September 30, and the 2025 Houston Innovation Awards winners will be announced live at our event on November 5.

Tickets will go on sale this fall. Stay tuned for that announcement, as well as more fanfare leading up to the 2025 Houston Innovation Awards.

Nominate now:

Interested in Innovation Awards sponsorship opportunities? Please contact sales@innovationmap.com.
View All Listings