In this article, we develop a methodology for trajectory tracking control of a vertical takeoff and landing (VTOL) unmanned aerial vehicle (UAV) in the presence of unknown mass and time-varying ...

EASA has received a number of requests for the type certification of vertical take-off and landing (VTOL) aircraft, which differ from conventional rotorcraft or fixed-wing aircraft. In the absence of ...

Did you know that QUAD stands for “Quality Unit Amplifier Domestic”? I didn’t until a few days ago when the (IAG-owned) British hi-fi company pulled the covers off a new amplifier. The QUAD 3 is a ...

Things to do in the Quad-Cities: Beer Fest, Luau, classic cars and other weekend events Nina Baker Jun 20, 2025 Updated Jun 20, 2025 0 ...

MOLINE, Ill. — Skills Rebecca Myers learned in Mountain, Wisconsin have made their way to Moline, Illinois to find search crews. Three volunteers with the Quad Cities Missing Persons Network ...

DARPA will begin flight testing five lightweight vertical take-off and landing (VTOL) unmanned aerial systems (UAS) later this month as part of the Early VTOL Aircraft Demonstration (EVADE) initiative ...

In May 1969, a daring race between iconic skyscrapers marked a new chapter in aviation. At the heart of it was Britain’s Harrier Jump Jet, an aircraft that defied traditional take-off and ...

MOLINE, Ill. — The Quad Cities has a thriving community of talented musicians and bands. You can find live music almost any day of the week around the QC metro. Multiple venues across the Cities ...

Notably, the call marks the first direct conversation between the two leaders since the April 22 terrorist attack in Jammu and Kashmir's Pahalgam. "For the next meeting of QUAD, PM Modi invited ...

UNADILLA – On Friday, June 13, the Quad county softball league had its championship game under the lights at the Unadilla youth complex. The Bainbridge white team defeated Sidney white 7-6.