LinkedIn · Jun 2025
Company hiring signal; frames the product as a hypersonic, air-breathing first-stage aircraft and reiterates active recruiting.
Hypersonic space plane that can take-off from any location and weather
Company research
Public company, workplace, funding, and market signals
Updated Jul 30, 2026
Overview
Velontra is a Cincinnati/Lebanon, Ohio aerospace propulsion startup building low-cost subsonic, supersonic, and hypersonic engines and a hypersonic space-plane concept for unmanned systems and LEO access. The company emphasizes rapid design-build-test cycles, vertical integration, and lower-cost development.
Primary product
Hypersonic air-breathing propulsion systems and hypersonic space-plane concept (Bronco / turbo-ramjet family)
Founded
2021
Headquarters
Cincinnati, Ohio, United States
Team size
1-10 employees
Industry
Defense & Space
Sub-industry
Aerospace propulsion / hypersonic propulsion
Offices
2460 Greentree Rd, Hangar 12, Lebanon, OH 45036-9693, United States
7811 Laurel Avenue, Suite A, Cincinnati, OH 45243, United States
Business model
B2B hardware development
government contracting
commercial aerospace contracting
Funding
Stage
Seed / Early Stage VC
Total raised
$900K
Latest round
Convertible Note - II · Mar 2025
Latest amount
$250K
Mar 2025 · Undisclosed investors
Sep 2022
Aug 2022
Aug 2022
Jul 2022
Oct 2021
Jun 2021
People & investors
Leadership
Chief Executive Officer
Eric Briggs
Chief Operating Officer
Board of Advisors
Founders
Mark Longenecker
Founding member / Chief Legal Officer
Co-founder / Chief Operating Officer
Zachary Green
Co-founder / initial Chief Executive Officer
Work & culture
Mission-driven aerospace culture that values rapid iteration, few meetings, excellence, vertical integration, low cost, and fast design-build-test cycles.
Product & market
Pricing
Custom contract pricing for aerospace hardware and development; public target pricing cited at about $1M for a supersonic system and $5M for a hypersonic system.
Differentiators
- —runway-based horizontal takeoff in any weather
- —air-breathing propulsion claimed up to 6x more fuel-efficient than rockets
- —rapid design-build-test methodology
- —vertical integration
- —low-cost, mass-producible engine development
- —small form-factor hypersonic engines for UAVs
- —space-plane path to LEO access
Technology
air-breathing propulsion
subsonic turbojet engines
supersonic engines
hypersonic propulsion
ramjet / turbo-ramjet (Bronco)
afterburner hardware
additive manufacturing
wind-tunnel testing
vertical integration
rapid design-build-test cycles
LEO space-plane architecture
unmanned aerial systems
Customers
U.S. government / defense customers
commercial aerospace customers
Venus Aerospace (contract partner)
Competitors
Venus Aerospace
Hermeus
Rocket Lab
Astra
Firefly Aerospace
Radian Aerospace
X-Bow Systems
Scale & contact
Estimated revenue
About $5M ARR (public estimate)
Estimated monthly visits
754
Traffic estimate as of Jun 2026
Latest news
Signalbase · Apr 2025
Funding news describing a $250K capital infusion to accelerate hypersonic R&D and space-plane work.
LinkedIn · Dec 2024
Company post celebrating collaboration with Venus Aerospace on the VDR2 engine and hypersonic flight work.
Dayton Daily News · Jun 2023
Local coverage of Bronco testing and the company’s commercial and defense applications, including target pricing and next steps.
Forbes · Jun 2023
Forbes profile of Velontra’s Bronco hypersonic engine testing at Purdue and the company’s low-cost propulsion thesis.
Jobs and careers at Velontra
0 jobs at Velontra
No open positions
Check back later for new openings