Whisper Aero Launches Collaborative Logistics Aircraft for US Military

This article is based on an official press release from Whisper Aero.

In May 2025, Tennessee-based aerospace Startups Whisper Aero unveiled its new Collaborative Logistics Aircraft (CLA) family during Special Operations Forces (SOF) Week in Tampa, Florida. According to the company’s official announcement, this new line of autonomous cargo drones is specifically designed to address the United States military’s escalating challenges with contested logistics in austere environments.

The Department of Defense currently relies heavily on large, runway-dependent Cargo-Aircraft, such as the aging C-130 fleet, which consume significant amounts of fuel. As the military shifts toward Agile Combat Employment (ACE), a strategy emphasizing decentralized operations, Whisper Aero proposes replacing single, massive cargo planes with distributed fleets of autonomous, hybrid-electric unmanned aerial systems (UAS). The press release notes that these “right-sized” aircraft are engineered to operate quietly from restrictive, degraded, or unmaintained runways at any time of day.

To achieve this, the CLA fleet utilizes Whisper Aero’s proprietary UltraQuiet™ electric ducted fans and a novel wing integration concept called JetFoil™. The development of this technology is being funded and accelerated by the U.S. Air Force through Strategic Finance Increase (STRATFI) and Operational Energy Capabilities Improvement Fund (OECIF) contracts.

Aircraft Specifications and Capabilities

Whisper Aero is adopting a phased approach to its aircraft development, beginning with an ultralight demonstrator before scaling up to heavy cargo variants. The official release highlights two primary models in the CLA family: the CLA Light and the CLA Heavy.

The CLA Light

Classified as a Group 3 UAS, the CLA Light is designed for agile, short-range logistics. According to the company’s specifications, the aircraft features an easily accessible nose-loading payload bay capable of carrying 500 pounds. It boasts a range of 200 nautical miles (NM) with a full payload, or a 2,000 NM ferry range when empty.

The propulsion system consists of 12 eQ250 propulsors integrated directly into the main wing, powered by a 40-kilowatt (kW) hybrid-electric system with a small battery. This configuration allows the CLA Light to dash at speeds of 175 knots and requires only 50 feet of ground roll for takeoff.

The CLA Heavy

For larger logistical needs, Whisper Aero introduced the CLA Heavy. This variant significantly increases capacity, offering a 3,000-pound payload. The company states it can achieve an 800 NM range fully loaded, or a 3,000 NM ferry range.

The Heavy model utilizes a 600 kW powerplant driving 30 wing-integrated eQ250 propulsors. It can reach speeds up to 250 knots and requires a 300-foot ground roll for takeoff. Notably, the press release indicates that the CLA Heavy is designed for flexible operations and can be flown either autonomously or with a pilot on board.

Technological Innovations: JetFoil and UltraQuiet

The core enabler of the CLA fleet’s Short Takeoff and Landing (STOL) capabilities is Whisper Aero’s unique approach to aerodynamics and electric propulsion. The company has developed eQ250 propulsors, electric ducted fans measuring less than a foot in diameter, that generate 80 pounds of thrust each. According to Whisper Aero, these propulsors operate with significantly reduced acoustic and thermal signatures compared to traditional turboprops, enabling stealthier operations in combat zones.

Rather than utilizing tilt-rotors for vertical lift, common in many electric vertical takeoff and landing (eVTOL) designs, Whisper Aero employs its JetFoil™ integration. This method embeds multiple propulsors directly into the leading edge of a fixed wing. The array accelerates airflow over the wing, generating massive amounts of lift at very slow speeds, achieving lift coefficients as high as 14.

“The CLA really opens up the distributed operations portfolio in a way that materially extends the reach and rightsizing capability of cargo operations,” stated Mark Moore, CEO of Whisper Aero, in the release.

When comparing the JetFoil design to competing electric jets, Moore noted that while competitors often rotate their entire propulsion system to redirect thrust, the JetFoil technology “turns only the airflow with a fixed [propulsion system].” He claims this makes the aircraft highly efficient for short takeoffs, requiring about half the thrust of a conventional eVTOL to achieve liftoff.

Development Timeline and Strategic Backing

The U.S. Air-Forces financial backing through STRATFI and OECIF contracts is driving a rigorous testing and development timeline. Whisper Aero is currently testing its propulsion technology on a retrofitted Swift 3 glider, dubbed the “Whisper Ultralight.” This initial phase, spanning 2025 to 2026, is supported by a $500,000 grant from the State of Tennessee and Tennessee Tech University.

According to the company’s projected timeline, acoustic and static testing will be conducted in 2026 with the Air Force Test Center at the White Sands Missile Range in New Mexico. Flight testing for the CLA Light prototype is anticipated to begin in 2027. Looking further ahead, Whisper Aero expects to introduce this technology to commercial and civil air cargo markets between 2030 and 2032.

“There is a significant need to improve logistics, save fuel and sustain air power in new ways,” said Ian Villa, COO and Chief Product Officer at Whisper Aero. “It is logical to develop a 21st-century autonomous cargo logistics vehicle.”

AirPro News analysis

The introduction of the Collaborative Logistics Aircraft highlights a critical pivot within the U.S. Department of Defense. As military planners look toward potential conflicts in the Pacific theater, the vulnerability of massive, centralized supply chains has become a primary concern. By investing in swarms of quiet, autonomous, and runway-independent Drones, the military is actively attempting to mitigate the risks associated with “contested logistics.”

Furthermore, Whisper Aero’s JetFoil concept represents a fascinating divergence from the broader aviation industry’s current obsession with pure eVTOL aircraft. By proving that extreme STOL capabilities can be more energy-efficient and practical than vertical hover, Whisper Aero is challenging established design paradigms. While the immediate application is defense-oriented, the dual-use nature of this technology positions the company to potentially disrupt the commercial middle-mile cargo and regional air mobility markets by the early 2030s.

Frequently Asked Questions

What is the Whisper Aero CLA?

The Collaborative Logistics Aircraft (CLA) is a new family of autonomous, hybrid-electric cargo drones developed by Whisper Aero. Designed primarily for the U.S. military, the aircraft utilize extreme Short Takeoff and Landing (STOL) capabilities to deliver supplies in contested or austere environments.

How does JetFoil technology work?

JetFoil technology embeds multiple small electric ducted fans (propulsors) into the leading edge of a fixed wing. This design accelerates airflow over the wing to generate massive lift at low speeds, allowing the aircraft to take off on very short runways without needing to rotate its propulsion system like a traditional eVTOL.

When will the CLA be operational?

Whisper Aero plans to begin Test-Flights the CLA Light prototype in 2027, following acoustic and static testing in 2026. The company anticipates commercial and civil applications of the technology to roll out between 2030 and 2032.

Sources: Whisper Aero Press Release