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A roundup of most viewed content in April.
Aviation Week Network
Aerospace Digest: Most Viewed Content
Top civil, military and space this month
 
Matthew Jouppi

The U.S. should account for an advanced adversary when making decisions about its future fighter force.
 
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Guy Norris

New propulsion system test site under construction for larger Hermeus hypersonic turbine-based combined-cycle engine.
 
Graham Warwick

Korea Aerospace Industries rolled out the KF-21 Boramae, previously called the KF-X, on April 9 in Sacheon, South Korea. First flight is planned for the second quarter of 2022. The Block 1 air-superiority version is scheduled to enter service in 2026, to be followed in 2029 by the Block 2 multirole variant.
 
Thierry Dubois

Airbus launches superconducting electric research as it provides more detail on hydrogen plans.
 
From replacing the Tornado fighter to buying new unmanned aircraft systems, here is a look at some of Germany’s looming decisions.
 
Jen DiMascio, Steve Trimble, Lee Hudson

After a blistering congressional hearing, Aviation Week editors break down some of the F-35 program’s recent struggles and cost issues to develop the program and maintain and operate the fighter.
 
Jens Flottau

Boeing’s proposed small widebody is the only near-term opportunity for a large new conventional engine.
 
Steve Trimble

A top U.S. Air Force commander on April 1 said the Army’s plan to deploy ground-launched, hypersonic missiles in the Pacific theater is “stupid,” throwing gasoline on a largely behind-the-scenes turf fight raging inside the Pentagon over budgetary resources for long-range strike programs.
 
Jen DiMascio, Irene Klotz

After a successful first flight of the Ingenuity on Mars, Ellen Stofan, the under secretary for science and research at the Smithsonian Institution, talks with Aviation Week editors about the historic nature of the mission, coming 117 years after the Wright Brothers flew at Kitty Hawk, North Carolina. Once astronauts start journeying to Mars, Stofan says, the 4 lb. rotorcraft should be brought back to Earth to take its place at the Air and Space Museum.
 
Jens Flottau, Graham Warwick

Several airlines are exploring business cases and operational feasibility of replacing small turboprops with all-electric aircraft.
 
Graham Warwick

With some 100 companies vying to enter the advanced air mobility industry, the competition was bound to get bloody sooner or later.
 
Lee Hudson

The new maneuvers to watch for during the U.S. Air Force’s flight demonstration team’s 2021 air show.
 
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