Hermeus-Pratt & Whitney Partnership Announced | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Most Recent Daily Episodes

Episode Date



Airborne-Wednesday Airborne-Thursday


Airborne On YouTube






Thu, Dec 29, 2022

Hermeus-Pratt & Whitney Partnership Announced

Something Old, Something

Founded in 2018 with a stated mission of “radically accelerating air travel,” Atlanta-based Hermeus is about the business of developing a trio of hypersonic aircraft. For all its implicit hyperbole, hypersonic is a valid aerospace term describing velocities greater than five-times the speed of sound—Mach 5.0.

In pursuit of its ambitious goal, Hermeus has taken on powerful partners the likes of the United States Air Force and NASA. So allied, the company has developed a series of autonomous aircraft for purpose of vetting inchoate technologies and addressing urgent national security challenges.

On 20 December 2022, Hermeus announced it had selected Pratt & Whitney’s F100 turbofan engine to serve as the turbine portion of its combined-cycle hypersonic engine—to which the company has ascribed the apposite moniker Chimera II.

For more than half-a-century, the 29,000-pound-thrust F100 engine has powered Boeing’s F-15 and Lockheed-Martin’s F-16 fighters—racking up north of thirty-million flight hours over innumerable sorties, training hops, demonstration flights, and combat deployments. By basing its hypersonic powerplant on an off-the-shelf engine, Hermeus posits it will save “billions of dollars in research and development costs and years of schedule.”

Chimera II comprises a hybridization of turbine and a ramjet architectures to facilitate both low-speed and high-speed flight, thereby allowing aircraft powered by the contraption to operate from extant airports—a feat beyond the purview of rocket-propelled hypersonic vehicles. Chimera II will power Darkhorse, a 45-foot-long, hypersonic UAV being developed by Hermeus for defense and intelligence customers. Darkhorse is a delta-winged, twin-tailed derivative of Quarterhorse, a proof-of-concept flight vehicle which—in addition to substantiating Hermeus’s penchant for equine sobriquets—is powered by the GE-J85-based Chimera engine from which the Chimera II evolved. Quarterhorse is slated to fly in late 2023.

By dint of Chimera II’s combined-cycle design, Darkhorse will take-off, land, and low-speed-cruise under turbojet power. Once the aircraft reaches Mach-3, however, diverters will bypass incoming air around the turbojet and into the ramjet, which will accelerate Darkhorse to hypersonic speeds.

Flight tests of Darkhorse are expected to commence in the mid-2020s.

FMI: www.hermeus.com


More News

Kickstarting Your Aviation Journey at Oshkosh 2024

A Guide to Making the Most out of the World’s Biggest Airshow EAA’s Oshkosh Airventure generates fun for all aviation lovers. You get a chance to see, touch, and maybe >[...]

Aero-News: Quote of the Day (07.22.24)

"We're excited to offer our advanced avionics to a broader range of aircraft while maintaining our commitment to value. Twin-engine aircraft usually pay a significant premium to eq>[...]

Electric Power Systems Seeks TSO for Rechargeable Battery System

Modular, Scalable Lithium Battery System for Select Aircraft Electric Power Systems, Inc., announced that it has submitted its application to the FAA for a Technical Standard Order>[...]

Advanced Micro Turbines Find Footing in USA

350 Pound-feet of Thrust Now Available in a Small, Lightweight Package UAV Propulsion Tech signed an agreement with AMT-Advanced Micro Turbines to begin marketing their tiny little>[...]

Klyde Morris (07.22.23)

Klyde Provokes The Ultimate Oshkosh Invite... Sorta... FMI: www.klydemorris.com>[...]

blog comments powered by Disqus





© 2007 - 2024 Web Development & Design by Pauli Systems, LC