Rivolo

Rex Rivolo , a former Black Hawk aviator and helicopter expert, said the distinctive noise of a helicopter's rotor blades is "the signature that gives you away."

Crashed Copter Sparks Concern About Secrets Nathan Hodge 2011

Rex Rivolo , a former Pentagon defense analyst and aviator, said helicopters are "inherently very vulnerable"—especially in takeoff and landing.

Military Aims to Reduce Helicopter Vulnerability to Low-Tech Weapons Nathan Hodge 2011

Mr. Rivolo said the military had studied a number of methods for reducing helicopter noise, including pairing helicopters with unmanned aircraft to cancel out noise.

Crashed Copter Sparks Concern About Secrets Nathan Hodge 2011

The HROD tests were continuing, though, because Navair was trying to satisfy Institute for Defense Analyses expert Rex Rivolo that the tests had been adequate.

The Dream Machine Richard Whittle 2010

Rex Rivolo and other critics deemed that a test failure, but Walters and his testers concluded the Osprey could do such a mission in a single night if need be, for a couple of reasons.

The Dream Machine Richard Whittle 2010

“I intend to get the maneuvering issue squarely on the table,” Rivolo assured.

The Dream Machine Richard Whittle 2010

A helicopter, with its rotor or rotors over the fuselage, could recover nine out of ten times in such circumstances but the Osprey would always crash, Rivolo asserted.

The Dream Machine Richard Whittle 2010

Rivolo had been doing that work for IDA since the early 1990s, when he joined the think tank after an extraordinary early career.

The Dream Machine Richard Whittle 2010

When the committee met in June 2001 to hear briefings by invited experts, one was Arthur “Rex” Rivolo of the Institute for Defense Analyses, one of a handful of federally funded think tanks paid to do independent research for the Pentagon.

The Dream Machine Richard Whittle 2010

Rivolo replied that while FAA statistics attributed only 8 percent of major helicopter accidents to vortex ring state, the figure really should include mishaps resulting from failed attempts to autorotate and other hard landings.

The Dream Machine Richard Whittle 2010