Aerodynamic parametric analysis of an unconventional joined-wing aircraft configuration

In this paper, the experimental results of an unconventional joined-wing aircraft configuration are presented. The test model uses two different wings, forward and rear, both joined in tandem and forming diamond shapes both in plant and front views. The wings are joined in such a way that it is possible to change the rear wing dihedral angle values and the rear wing sweep angle values in 25 different positions that modify the relative distance and the relative height between the wings. To measure the system aerodynamic coefficients itis necessary to perform wind tunnel tests. The datapresented corresponds to the lift, drag and induced drag aerodynamic coefficients, as well as the aerodynamic efficiency and the parameter for minimum required power, from the calculated values of the lift and drag time series measured by a 6-axis force and torque sensor. The results show the influence on the aerodynamic coefficients of the rear wing sweep and dihedral angles parameters. As a main result, it can be concluded that, in general terms, the lift and induced drag aerodynamic coefficients values decrease as both the distance and height between the wings increase, on the other hand, the total drag aerodynamic coefficient decreases if the distance between the wings increases, but nevertheless shows a slight tendency to increase if the height of the rear wing increases, whereas the aerodynamic efficiency and the parameter for minimum required power increase if the distance between the wings increases

The Amplifier - v. 11, no. 1

In this issue...Student Council, Montana Bureau of Mines, Geology Camp, Dillon, Montana, Senator Mike Mansfield, All-State Basketball, Dolly Labranche, Alumni Association

The Amplifier - v. 11, no. 2

In this issue...Continental Oil Company, Big Butte, Bolivia, Rotary Scholarship, YMCA, Anaconda Company, Butte Wesley Foundation, American Yearbook Company

The Amplifier - v. 11, no. 3

In this issue...Economic Opportunity Act, Magma Staff, International Club, Hillbilly Hop, George Phelps, Butte YMCA, Library, Metals Bank, Sigma Rho, Park Street Mansion

The Amplifier - v. 11, no. 4

In this issue...Montana Power Company, US Coast Guard, Alumni Dinner, Vegas Club, Chess Club, Theta Tau, Butte Civic Choral Society, Sacred Heart Grade School

The Amplifier - v. 11, no. 5

In this issue...Mary McGrath, Geophysics Club, Marcus Daly, Intramurals, Constitution, Circle K Club, Homecoming, Kiwanis Club, Rose Parade

The Amplifier - v. 11, no. 6

In this issue...Continental Oil, Jocko Evans, Engineers Week, Dan Rovig, EIT Examination, Metallurgy Building, Montana Power Company, Boeing Company

The Amplifier - v. 11, no. 7

In this issue...KXLF TV, Mine Rescue, Talent Show, Linda Plubell, Gulf Oil Company, Student Loans, Theta Tau, Alaska, Newman Club

The Amplifier - v. 11, no. 8

In this issue...Chess Club, Yukon, Butte High School Science Fair, Social Security, Talent Show, Shakespear, Mineral Club, April Fool's Day

The Amplifier - v. 11, no. 9

In this issue...M Days, Montana Tech Young Democrats, Mineral Club, Theta Tau, Butte YMCA, Chess Tournament, Student Council, Copper Lounge, Texaco, Montana Power Company

The Amplifier - v. 11, no. 10

In this issue...Butte Tennis Club, Coach Downey, Talent Show, Anaconda Company, Copper Guards, Graduates, Butte YMCA, Intramural Sports, Alex Chaky

The Amplifier - v. 12, no. 1

In this issue...Geology, Mineral Club, Homecoming Queen, Pipestone Pass, Parachute club, Tech Band, High Ore Mine, Cheerleaders, Nitrogen Generator

The Amplifier - v. 12, no. 2

In this issue...Library Building, Mineral Museum, Daylight Savings Time, Pete Knudson, Finlen Hotel, Homecoming, Vending Machines, Veterans' Day

The Amplifier - v. 12, no. 3

In this issue...Business Management, US Geological Survey, Finlen Hotel, Magma Yearbook, Copper Guard, Somewhere Else Coffee House, Marcus Daly Statue

The Amplifier - v. 12, no. 4

In this issue...Butte Symphony, Dr. Adam Smith, NASA, Petroleum Engineering Scholarship, Charlie Brown, Peanuts Cartoon, Glee club, Library-Museum Building