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Whisper Aero designs and manufactures electric propulsors, focusing on electric ducted fans to power quieter, more efficient propulsion for aircraft, drones, and other devices. Its tech reworks how electricity becomes thrust so noise shifts to ultrasonic frequencies, claiming up to 100x quieter performance. The company acts as a propulsion-system supplier across defense, commercial, and civil aviation markets, with customers such as the U.S. Air Force and NASA and concepts like the Whisper Jet. Its goal is to scale production and broaden adoption of ultra-quiet propulsion across multiple industries, including consumer tools and HVAC, through diverse revenue streams and partnerships.
Industries
Hardware
Industrial & Manufacturing
Aerospace
Defense
Company Size
51-200
Company Stage
Series A
Total Funding
$48.9M
Headquarters
Crossville, Tennessee
Founded
N/A
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Total Funding
$48.9M
Above
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Funded Over
2 Rounds
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Whisper Aero joins Mach Industries programme to develop autonomous systems for the US Navy. eVTOL developer Whisper Aero is joining the Mach Industries-led programme to develop advanced autonomous systems for the U.S. military and its allies, under a contract award for the Defense Innovation Unit (DIU) Runway Independent Maritime Expeditionary Strike (RIMES) programme. "Serving as the aircraft integrator, Mach Industries will lead development and overall program execution for the effort," said Mach in a press release. "Mach Industries will execute this effort through a strategic partnership with Whisper Aero. Together the team is leveraging commercial technologies to design and deliver Atlas, a next-generation aircraft with a novel aero and propulsion approach that gives the warfighter an entirely new advantage for operations in contested environments." Mach Industries' integration of Whisper Aero's JetFoil(TM) in a scalable aircraft design, enables entirely new concepts of operations, said Mach. "Atlas can use unimproved rotary-wing landing zones, while maintaining the control simplicity of a fixed-wing aircraft and a thrust-to-weight ratio that is less than half of what is required for vertical flight. This, along with highly efficient propulsors, result in significantly increased range, as well as radical reductions in acoustic signature. The combination of these attributes, along with price points that enable low-cost mass, gives Atlas the ability to reduce cost per effect and fuel per effect in a contested environment."
Whisper Aero working with USAF on electric contested logistics aircraft. Whisper Aero has unveiled a new family of systems for contested logistics known as Collaborative Logistics Aircraft (CLA) during Special Operations Forces (SOF) Week. "Light (500 lbm payload) and heavy (3,000 lbm payload) variants of CLA were revealed utilizing Whisper's proprietary UltraQuiet(TM) propulsion and JetFoil(TM) integrations for conventional and short takeoff and landing (STOL)," said the company in a press release. "Development of these aircraft is being accelerated by the US Air Force who has selected Whisper Aero for funding via Strategic Finance Increase (STRATFI) and Operational Energy Capabilities Improvement Fund (OECIF) contracts. Whisper's propulsion systems are the core enablers for these platforms, said the company. "Multiple eQ250 propulsors, capable of 80 lbf of thrust, are integrated into the leading edge of the wings of these aircraft, in a concept known as JetFoil, to achieve coefficients of lift as high as 14, critical for short takeoff and landing from degraded runways. eQ250 propulsive efficiency improves at higher speeds, enabling higher speed flight of up to 250 kts with reduced acoustic and thermal signatures compared to existing turboprop or turbojet propelled aircraft. Static performance has been verified through tests with the Air Force Test Center (AFTC) at White Sands Missile Range's (WSMR) Acoustic Range Complex (ARC). "Whisper Aero has been selected for STRATFI and OECIF funding by the US Air Force to advance its CLA development. This comes after multiple years of maturing and validating its propulsion technologies together with AFWERX and the Air Force Research Lab (AFRL) on prior small business contracts. "First, Whisper is leveraging its Ultralight, a retrofitted Swift3 glider with two eQ250s to gather flight test data and advance the thrusters to technology readiness level (TRL) 7/8. Whisper recently announced a USD500K effort by the State of Tennessee in conjunction with Tennessee Tech to accelerate this effort. After successful civil flight tests, the team expects to advance to testing with the Air Force Test Center at White Sands Missile Range's Acoustic Range Complex in 2026. Once the Whisper Ultralight is airborne, the engineering team will set its sights on the CLA Light, a 1,300 lbm Group 3 UAS capable of carrying 500 lbm payload over 200 NM or ferrying over 2,000 NM with no payload. The CLA Light is a clean sheet design leveraging JetFoil arrays of twelve eQ250 on its main wing to enable CTOL or STOL with a 50 ft takeoff/landing ground roll. Its long range and STOL capabilities are enabled by a 40 kW powerplant and a small battery and can dash at 175 kts. The nose easily opens to reveal an accessible payload bay for cargo specialists to load and unload necessary supplies. The team expects flight tests for this aircraft to begin in 2027. "CLA Heavy will then build upon the learnings of the CLA Light and its flight test campaign. As a 10,140 lbm optionally crewed retrofit Group 5 UAS, the CLA Heavy will feature a new wing with eQ250 JetFoil arrays for CTOL or STOL flights with a 300 ft takeoff/landing ground roll. Its 50 ft wingspan features 30 higher voltage eQ250s proven out on the glider and CLA Light, enabling more robustness in flight due to no critical propulsor parts or subcomponents. Equipped with a 600 kW powerplant, the CLA Heavy will be capable of up to 250 kt speeds, 800 NM range with 3,000 lbm of payload, or 3,000 NM ferry flights with no payload. While the aircraft has been designed for cargo missions, it can be reconfigured for multiple missions where STOL and UltraQuiet(TM) flights may be enablers."
Leave a reply. Whisper Aero unveils JetFoil concept capable of near-vertical takeoffs. 2 hours ago Whisper Aero has unveiled new details of its JetFoil propulsion concept, a distributed electric ducted fan system designed to give aircraft short or near-vertical takeoff capability without exposed rotors or tilting propulsors. The company presented the update during SAE International's AeroTech 2026 event in West Palm Beach, Florida, where Whisper Aero co-founder and CEO Mark Moore received the 2026 AIAA F.E. Newbold V/STOL Award. The award recognizes Moore's work in VTOL and STOL technologies, including distributed electric propulsion, eVTOL aircraft and advanced air mobility. Whisper's JetFoil concept embeds electric ducted fans into the leading edge of a wing. The system uses upper surface blowing and the Coanda effect to redirect airflow over the wing and flap system, allowing the aircraft to generate high lift at very low forward speeds. Whisper said its electric ducted fans produce uniform flow with more than 95% turning efficiency at 90 degrees of flow turning. The company says the design could support conventional, short, vertical, or near-vertical takeoff operations using the same basic aircraft configuration. Whisper has positioned JetFoil as an alternative to aircraft that rely on large exposed rotors, tilting propulsors, or separate lift systems to achieve vertical or short takeoff performance. The system does not appear to offer a pure helicopter-style hover. Instead, Whisper describes JetFoil as a way to give aircraft "runway independent" operations while reducing the noise and mechanical complexity associated with some powered-lift designs. The company said it is continuing to test and validate its propulsors and JetFoil technology with the US Air Force, US Navy and NASA under multiple contracts. Whisper also said it is partnering with OEMs to design, build and fly JetFoil-powered aircraft prototypes over the coming year. The concept builds on Moore's long-running work in distributed electric propulsion. Before co-founding Whisper, Moore spent more than 30 years at NASA, where he worked on projects including Puffin, GL-10, LEAPTech and the X-57 electric aircraft program. He later co-founded Uber Elevate, the former Uber aviation unit that helped popularize the early eVTOL air taxi market. Whisper Aero was founded in 2021 by Moore and Ian Villa. The company is developing electric propulsion systems aimed at reducing aircraft noise while improving efficiency. The company has already applied JetFoil technology to defense concepts. In 2025, Whisper announced JetFoil-enabled Collaborative Logistics Aircraft concepts for the US Department of Defense, including autonomous aircraft designed for contested logistics missions. Those aircraft concepts used Whisper's electric propulsion technology to support runway-independent operations and quiet flight profiles for military logistics applications. Whisper has suggested the technology could apply to a range of aircraft, including unmanned systems, advanced air mobility vehicles and other clean-sheet aircraft designs that need short-field or near-vertical takeoff performance.
Release Date June 2, 2026 Whisper Aero reveals 'stall-proof wing,' Mach Industries partnership. When Tennessee-based Whisper Aero unveiled its electric ducted fan technology in 2023, the emphasis was on its extremely low noise - the reason for the company's name. Whisper's unique high-blade-count fan design pushes the blade passage frequency into the ultrasonic range, where the resulting tonal noise is inaudible to humans. The potential applications for the tech range from leaf blowers to regional aircraft; essentially anywhere there is value in moving air quietly. At the time of the unveil, Whisper also revealed the design for a notional Whisper Jet, an example of how its technology could be integrated into an aircraft using a "JetFoil" array of ducted fans along a wing's leading edge. Besides low noise, Whisper said the JetFoil design would provide extremely high lift by virtue of blowing air across the upper surface of the wing, along with very low drag thanks to its smooth integration with the wing and clean exhaust air flow. In 2023, however, these benefits were still largely theoretical. Whisper co-founders Mark Moore and Ian Villa haven't said much about the JetFoil in the three years since, but their team has been busy behind the scenes developing the technology and testing it in the lab. Now, they're finally ready to share some of the results as Moore receives the F.E. Newbold V/STOL Award from the American Institute of Aeronautics and Astronautics (AIAA). In an interview with The Air Current ahead of their reveal at SAE International's AeroTech conference in West Palm Beach, Florida on June 2, Moore and Villa claimed the JetFoil is proving to be even more revolutionary than they originally suggested, with properties that could enable otherwise conventional airplanes to approach the capabilities of vertical take-off and landing aircraft. Whisper is now partnering with California-based startup Mach Industries to develop this "near-VTOL" capability for the Defense Innovation Unit Runway Independent Maritime & Expeditionary Strike (RIMES) program, which seeks drones that can carry fighter-class munitions from destroyers and other warships that lack large flight decks. "We've never been able to get the wing to stall - this is a stall-proof wing," said Moore, explaining how the JetFoil design delivers near-constant lift even as airspeed approaches zero. "Even as you're flying at crazy low speeds, you cannot stall the wing, which is an incredible safety feature." Our award-winning aerospace reporting combines the highest standards of journalism with the level of technical detail and rigor expected by a sophisticated industry audience. * Exclusive reporting and analysis on the strategy and technology of flying * Full access to our archive of industry intelligence * We respect your time; everything we publish earns your attention
Whisper Aero unveils a leaf blower at CES. Whisper Aero has a unique way of showing its cards at the 2026 Consumer Electronics Show in Las Vegas. The Crossville, Tennessee-based company has developed an ultra-quiet electric propulsor that could power aircraft of varying sizes. While nine Red Bull cyclists recently towed an ultralight sailplane skyward, two Whisper units could launch an ultralight flying wing hang glider. Beta testing in the hood. In what seems to be a clever and cagy move, Mark Moore and Ian Villa have created an electric leaf blower using their quiet technology. Putting their demonstrably quieter Whiasper Tone T1 in customer's hands will unleash thousands of beta testers for the device and the technology. Your editor was a bit taken aback by the blower's $599 price, but after comparing the T1 to units with which it is competitve, realized the addage about getting what you pay for is true in this instance. The video below is a good comparison with other similar products. Whisper is clever in its marketing approach, noting the good neighbor benefits of using their product. Interesting Engineering reports on the device. "The Tone T1 uses proprietary aerospace propulsion technology to deliver more power than top gas-powered blowers. "It operates 70% quieter, meeting the growing national demand for silent lawn care. "Tone T1 is born from the same propulsion technology Moore developed for electric aircraft. "'Whisper Aero was founded on a passion to achieve a quieter world, in the air and on the ground. The Tone T1 Leaf blower is the first product to use aerospace-grade technology derived from my years at NASA, where I pioneered electric aircraft,' said Moore." Similar neighborly efforts will be necessary to make drone deliveries and urban commuter flights reasonable. Whisper's Tone T1 can deliver low noise, and the same technology seems ready to deliver quietude while flying overhead. Whisper's management of acoustic perceptions fits neatly between normal adult loss in the upper frequency ranges and just below the enhanced ability of dogs to hear, well, dog whistles. The noise is there, but Sustainable Aviation Foundation and its pets can't hear it. Future plans. While the leaf blower will prove the efficiency of the thrust provided on owner's lawns, Moore and Villa have airborne ambitions to explore. The earliest aerial vehicle to employ the near-silent thrusters is a regional, autonomous people carrier very much in tune with Mark Moore's earlier leadership of the Uber Lift program, meant to provide urbanites with convenient air taxi service. The folks at Whisper Aero see a more suburban, rural kind of potential group of passengers. "Considerate and compelling" are words the team uses to describe their creations. Probably not autonomous. Even grander, Whisper visualizes a 100-passenger machine that would compete with more traditional craft like Embraers and Dash 8s. Whisper machines would be far quieter, though, allowing airports to built closer to population centers while being far less annoying. Designed to operate from 3,000-foot runways, the machine not only reduces noise, but increases performance through its distributed thrusters along the wing. As Whisper explains, " Integration of Whisper's electric ducted fans along the leading edge of a wing increases the aircraft's wing loading by >20% to increase the cruise high speed lift-to-drag ratio from 17.5 to 22." Operating economy should make the airliner a favorite with operators, if Whisper's analysis is correct. Whisper's designs are as unique as its thrusters, and might take a soothing sales pitch to fill seats, but Mark and Ian seem to have a way to sell their product, even in the hinterlands.
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Industries
Hardware
Industrial & Manufacturing
Aerospace
Defense
Company Size
51-200
Company Stage
Series A
Total Funding
$48.9M
Headquarters
Crossville, Tennessee
Founded
N/A
Find jobs on Simplify and start your career today