search

UMD    CORE




UMD’s compound helicopter rig in the Glenn L. Martin Wind Tunnel, the first university-led wind tunnel test of a lift and thrust compounded Mach-scaled rotor with a single wing.

UMD’s compound helicopter rig in the Glenn L. Martin Wind Tunnel, the first university-led wind tunnel test of a lift and thrust compounded Mach-scaled rotor with a single wing.

 

University of Maryland (UMD) Department of Aerospace Engineering Ph.D. student Vivek Uppoor was recognized with the best paper award from the Dynamics Committee technical session at the Vertical Flight Society’s (VFS) 80th Annual Forum & Technology Display.

His paper, “Aeromechanics Investigation of a Dual-Wing Lift Compounded Slowed Mach Scale Rotor,” investigated the effect of lift compounding on the aeromechanics of a rotorcraft, and more specifically, the Mach-scaled UMD compound rotor rig which was tested in the Glenn L. Martin Wind Tunnel in 2023.

That test was the first university-led wind tunnel test of a lift and thrust compounded Mach-scaled rotor with a single wing. The UMD rig, shown at right, is uniquely capable of measuring loads at three distinct locations: rotor, wing, and propeller.

“We used the data from this test to validate the comprehensive analysis models used in the paper,” explained Uppoor. “And, we compared the asymmetric single wing (wing only on the left, retreating, side of the helicopter) and dual wing (wings on both sides of the helicopter) configurations at various wing incidence angles and rotor shaft tilt angles to identify the configurations that yield the best performance and minimize blade and hub structural loads.”

According to Uppoor, his research identified several key conclusions: single wing configuration maximizes lift to drag ratio (best performance); high wing incidence angle minimized blade and hub vibratory loads; rearward tilted rotor minimizes required rotor torque, and wings negatively interfere with the rotor aerodynamically.

“Lift compounding with wings allows a helicopter to achieve higher speeds than conventional helicopters with greater efficiency,” explained Uppoor. “This results in decreased travel time and better fuel economy.”

Uppoor is a second-year Ph.D. student, and graduated with his B.S. in aerospace engineering from UMD in 2022. Working under Distinguished University Professor Inderjit Chopra in the Alfred Gessow Rotorcraft Center, he researches lift and thrust compounded rotor systems at high advance ratios using wind tunnel testing and comprehensive aeromechanics modeling. Beyond his current research, Uppoor is passionate about aircraft design and intends to enter the VTOL industry to work on initial-stage vehicle development after completing his Ph.D.



Related Articles:
Seven Maryland Students Receive Vertical Flight Foundation Scholarships
Five UMD Alumni Receive Vertical Flight Society Honors
Alum Named Distinguished Professor of Aerospace Engineering at PennState
UMD Takes Second at VFS Design-Build-Vertical-Flight Competition
Seven UMD Students Receive Vertical Flight Foundation Scholarships
Undergrad Hailu Daniel Selected for 2023 Matthew Isakowitz Fellow Program
UMD’s Chopra: A Driving Force in Rotorcraft Engineering
Chopra to Receive Prestigious AIAA Walter J. and Angeline H. Crichlow Trust Prize
A Maryland Built Lifetime
Aerospace Engineering Welcomes Umberto Saetti, Assistant Professor

June 18, 2024


«Previous Story  

 

 

Current Headlines

Two UMD Students Win Spots in SAMPE University Research Symposium

UMD Team Wins Spaceport America Cup

Designing for Moon Mission

Ph.D. Student Receives Best Paper Award at VFS 80th Annual Forum

Maryland Engineering: Top 10 Among Public Graduate Programs, Six Years Running

Roving Reporter

Students with Entrepreneurial Curiosity: Launch Your Business Idea at Maryland

Congratulations to our 2024 Honors and Awards Recipients

Engineering Students Fabricate Tomorrow’s Solutions Today

Alum Appointed Space Domain Lead for AIAA

 
 
Back to top  
CORE Home Clark School Home UMD Home Aerospace Engineering