I have known Ray from the day he came to NASA and joined the TDT Aeroelasticty Branch, which I headed at the time. His research and engineering contributions in the field of rotorcraft aeroelasticity are many and widely recognized worldwide. Ray was not only an extremely smart, talented engineer, but also his search for knowledge in many other areas never ceased.
With my condolences
I had the pleasure of working with Ray for many years. He was an incredibly smart and talented individual that never stopped learning (even Spanish). Ray always had a smile on his face and a positive attitude no matter what. We will miss him at work and at St. Joseph Church. (Dr. Lucas Horta)
Ray was a giant in rotorcraft research engineering, making countless contributions to the state of the art. He will be greatly missed for his expertise, but he will be especially missed for his gracious, compassionate, and unassuming style that made him so approachable. I consider myself incredibly fortunate to have known him for the last 33 years. My sincere condolences to the Kvaternik family.
"Very Saddened to hear this! Ray and I worked closely in late 1960's on tiltrotor aeroelastic models. He was a great teacher; and truly a professional. We all will miss him."
Dr. Jing G. Yen