5 Thursday, March 23, 1978 Prof trying to make planes quiet as cars By ROB HAGAN By ROB HAGAN Staff Writer Jan Rockam wants to make airplane cabins as quiet as Cadillacs. Roskam, professor of aerospace engineering, is testing certain metals to see whether they will minimize plane cabin noises. "The goal is to have the cabina like quiet cars. Rooksmart "It's easy to say that but not really." CAR MANUFACTURERS make cars silent with extra casing material around the engine and by padding the body of the car to keep it quiet. The result can be an almost soundproof car. Soundproof in unpressured airplanes is bad, Roskam said, because airplanes are made from lighter metals so that they can fly. Pressurized commercial airliners are quieter than unpressurized planes, he said, because they have heavier metal and pressure strengthens the metal for sound passages. Pressurized so that passengers can breathe at high altitudes without oxygen masks. “LITTLE PLANES, like Cessnas, are built with strong sheet metal,” Roskam said. “It does a poor job of keeping the noise out.” The project is funded by NASA. Each year NASA critiques the work, he said, and then decides whether the funding should continue. The $70,000-a-year project is now in it’s third year, Roskam said. The researchers bombard test metal with high volumes of noise. By placing a microphone on the other side of the metal determine how much noise goes through. With this method the researchers have found that a little pressure in the cabin of a jetliner can reduce fuel consumption. A blower is put at one end of the cabin to push air in and pressurize the cabin. The slight amount of pressure produced is just as effective a noise reducer in low-altitude planes as the commercial pressurized planes. HOWEVER, THIS is only a laboratory finding, Roskam said. Beech Aircraft Corporation of Wichita, which has helped with the project, is going to do the testing. The results, Roskam said, probably will remain secret for competitive reasons. "They wouldn't want Cessna Corporation to get the results and beat them out of a position." Roskam said that within the next decade there would be plane cabins that people could sleep in. "We believe," Roaksm said, "that it will be possible in 10 to 15 years to develop a large-scale research project." Striking Kansas farmers plow under part of crop JOHNSON (UP1) - Striking farmers plowed part of their wheat crop under in at least 20 southwest counties yesterday to overcome a failure to increase agricultural prices. Bob Scribner of the American Agriculture movement said all of 10 counties and parts of seven states were inundated. Scrivener said about 16,900 acres and 62 farmers were involved in Siantan County. OVER THE STATE, farmers plan to plow under 5 percent each week until they plow under 30 or 50 percent of their crop, a spokesman. There was little activity in some sections of the state. Frozen or wet ground forced snow to cover the sides of roads. Northwestern Kansas farmers, particularly those in the Goodland area, said they would be ready by Monday. Strikers in central Missouri said they planned to plow under wheat April 3. "Jayhawk Celebration Sale" 25' each/4 for $1 - Little Breaker Burger - Grilled Cheeze - Corn Dog - Reg. Order French Fries - Med. Soft Drink Offer good through March 31 WHEEL MEALS DRIVE IN' 2554 Iowa UNIVERSITY DAILY KANSAN On Campus TODAY: PETER JONES, professor at the University of Edinburgh, will present "Causes and Conditions in Hume," in a MASU seminar at 10 a.m. in the International Room of the Kansas Union. The UNIVERSITY COUNCIL meets at 3:30 p.m. in 108 Blake Hall. Events University Daily Kansan TONIGHT: PHI LAMBDA UPSILON will hold its award banquet and initiation at 5:30 in the Eldridge House, 7th and Massachusetts streets. SUA BRIDGE meets at 6:30 in the Union Parlor. A SELF HEALTH program will be presented at 7:30 in the Litchfield Library, followed by a Forum Room of the Union, ROCK CHALK Evaluation group meets at 7:30 in Woodruff Auditorium in the Union. MORTIMER ADLER, an American philosopher, will discuss contemporary education in an Integrated Humanities Program lecture at 7:30 in the Union Ballroom, followed by an HIP reception at 8:30 in the Litchfield Library. SHEPARD percussion, will present student recitals at 8 in Bwinton Hall in Murphy Hall. MARY FULKERSON, a choreographer and dancer from Dartington College of Arts in England, will perform an evening of dance as part of the professor's presentation. SHEPARD percussion, will present professor of paleontology, will present a program, "Fossil Birds in Kansas," at 8 in Dyche Auditorium to members of the Jayhawk Audubon Club. ADVENTURE a bookstore in the Hillcrest Shopping Center 9th & Iowa invites you to a SPRING BOOK SALE Thursday 9 a.m. to 9 p.m. Fri. & Sat. 9 a.m. to 6 p.m. Clearance of hundreds of fine books from our regular stock. Art, biography, business, cooking, crafts, education, games, gardening, health, history, literature psychology, science, technology... and lots of children's books. Paperbacks $ \frac{1}{2} $ price. Hardcovers $ \frac{1}{3} $ to $ \frac{1}{2} $ off. Sale tables downstairs (Our permanent sale room will be open as usual) Come in for real book bargains. A summer of intellectual stimulation This June, you can go to one of the world's top universities and take courses in such fields as history, literature, languages, sciences, mathematics, technology, the social sciences, and education. Between classes you'll find yourself in one of the world's top recreation areas — near hills for hiking, ocean beaches, San Francisco Bay, and San Francisco itself — in some of the world's top weather. Send for your copy of our 1978 Summer Session Bulletin and an application for admission by mailing the coupon below. in a Mediterranean climate. NAME ADDRESS June 26-August 19 Stanford Summer Session SAN JOSE Stanford, California 94305 (415) 497-3109 MONTEREY CARMEL LEO KOTTKE Appearing with Special Guest John Hammond Friday, March31 8:00 p.m. Hoch Auditorium University of Kansas Reserved Seats $6.50 & 5.50 Available at SUA Box office, Kief's, Caper's Corner & Peaches in Kansas City Mother Earth, Topeka An SUA & Schon Production in cooperation with KY102 All Natural Soft Frozen Frogurt cones cups sundaes frogurt splits frogurt supremes frogurt shakes 2545 Iowa St. 7 a.m.-11 p.m. til 12 p.m. Fri & Sat And . . . 1835 Mass. St. 11 a.m.-11 p.m.