Charles Alcock is managing editor of the AIN Media Group, having rejoined the company in 2019. He has been an aviation journalist since 1986, and previously worked for AIN from 1990 to 2017, most recently as editor-in-chief. His main focus is on covering new aviation technology and business models, as well as international news.
Having been raised in the London area, Alcock studied at the University of Manchester in the UK and earned an honors degree in Politics and Modern History. He speaks English and French, and some German.

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Piasecki Aircraft Corporation (PiAC) is acquiring Lockheed Martin’s Sikorsky Heliplex facility in Coatesville, Pennsylvania, to establish a research and development hub for VTOL aircraft and uncrewed aerial systems. The 219,000-sq-ft site previously served as the production and delivery center for Sikorsky’s S-76 and S-92 helicopters and once served as the site where Schweizer helicopters were manufactured.
PiAC plans to base its PA-890 hydrogen-powered helicopter program in Coatesville.&nbsp;The company aims to fly a technology demonstrator of the slowed-rotor winged helicopter by the end of this year as it works toward&nbsp;FAA type certification in 2028.
The PA-890 is expected to be used for applications including emergency medical flights, logistics, and passenger transportation. In the military market, privately owned PiAC is also working on the Aerial Reconfigurable Embedded System tilt-duct optionally crewed VTOL vehicle and its Adaptive Digital Automated Pilotage Technology flight control system for new and existing rotorcraft.
Lockheed Martin <a href="https://www.ainonline.com/aviation-news/general-aviation/2021-08-23/lockheed-shuttering-sikorsky-coatesville">closed the Sikorsky Heliplex</a> in 2022, causing&nbsp;the loss of hundreds of jobs. PiAC, which has not disclosed how much it paid for the site, expects to reopen it in the fall and to hire around 400 workers there by 2028. The company is headquartered in Essington, Pennsylvania, which is near Philadelphia International Airport and about 40 miles from Coatesville.
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<figcaption style="font-size:1.5rem;line-height:1.2;font-style:italic;">Piasecki Aircraft has acquired the former Sikorsky helicopter factory in Coatesville, Pennsylvania, from Lockheed Martin. (Image: Piasecki Aircraft)</figcaption>
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“This world-class facility will serve as a strong foundation for growth and will enable us to expand our R&amp;D and production capabilities as we deliver transformational vertical lift technologies to the defense and commercial markets,” said PiAC’s CEO, John Piasecki. “We chose to expand our development capabilities in the Delaware Valley because of its deep roots within the helicopter industry, its highly talented workforce, and its robust supplier network.”
<h2>Hydrogen-Powered Helicopter Heads to Market</h2>
PiAC is working with five undisclosed prospective customers to refine the operational requirements for the PA-890. The company has also established a working group with the FAA’s Center for Emerging Concepts and Innovation to develop the G-1 certification basis for the helicopter, which it expects to follow existing Part 27 and 29 requirements.
The aircraft is expected to be able to carry a pilot and up to seven passengers on trips of over 200 nm. Its maximum payload is 1,660 pounds and the maximum takeoff weight is 7,000 pounds.
Hydrogen propulsion developer ZeroAvia is providing its High-temperature Proton Exchange Membrane hydrogen fuel cell technology for the PA-860. This will be integrated with four 125-hp electric motors with a two-stage gearbox to drive the main rotor and a 150-hp motor with a separate gearbox for the tail rotor.
With financial support from the U.S. Air Force, PiAC and ZeroAvia are preparing to start ground testing a 660-kilowatt&nbsp;propulsion system on a full-scale test stand. <a href="https://www.futureflight.aero/news-article/2022-10-06/zeroavia-acquires-fuel-cell-developer-hypoint-expand-hydrogen-powertrain">ZeroAvia</a> acquired <a href="https://www.futureflight.aero/news-article/2021-08-24/hypoint-teams-helicopter-maker-piasecki-market-hydrogen-fuel-cells">fuel cell specialist HyPoint,</a> which had started the project with PiAC and has incrementally expanded its hardware from&nbsp;"mini stack"&nbsp;fuel cells to a full-scale 20-kilowatt&nbsp;stack. ZeroAvia is developing a family of hydrogen propulsion systems to convert existing<a href="https://www.futureflight.aero/news-article/2023-03-13/zeroavia-reveals-record-breaking-hydrogen-fuel-cell-performance-tests"> twin-turboprop regional airliners</a>.
PiAC said it opted for a hydrogen fuel cell propulsion system for the PA-890 over battery-electric and hybrid-electric technology based on its projections for the available specific power and energy density. The company also believes this choice will deliver lower direct operating costs and&nbsp;emissions, as well as less noise.
A ribbon-cutting ceremony in Coatesville on May 31 was attended by PiAC’s industry partners, including ZeroAvia founder and CEO Val Miftakhov;&nbsp;Dan Crowley, CEO of aerostructures group Triumph;&nbsp;Martine Rothblatt, founder of the medical group United Therapeutics, which is sourcing new VTOL aircraft for transporting human organs;&nbsp;and Metro Aviation CEO Mike Stanberry. Also present were Congresswoman Chrissy Houlahan, Pennsylvania’s community and economic development secretary Rick Siger, and Mike Hirschberg, executive director of the Vertical Flight Society.

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