European Stars And Stripes (Newspaper) - August 3, 1987, Darmstadt, Hesse Page 4 the stars and stripes monday August 3,1987 Navy developing quieter submarines laser system significant Advance state College. A. A a computerized laser inspection system on the of technology will help the Navy make quieter harder to find submarines by improving propeller design officials say. The intelligent robot inspection system or Iris developed at Pennsylvania slate University will measure the shape and Complex curves of propellers More precisely and More quickly than before said Norman Overway a civilian in charge of the Navy s submarine pro Pulsar Branch. We consider it a significant Advance Overway said in a recent Telephone interview from Washington . Making quieter propellers is important because sound is the principal method of detecting and locating subs Overway said. And most of the Low frequency sound produced by a cruising sub comes from the turning propeller As its Blades Cut through the water. Last month . Officials denounced the Toshiba machine co. Sale to the soviet Union of computerized Mil Ling machines capable of making Ultra Quick propellers calling the Sale a serious blow to Western Security. Iris will help the United states maintain its technological Edge by enabling Navy researchers to evaluate How Small changes in propeller Blades affect performance Overway said. Much propeller research has been trial and error until now with scale models of new Blade shape designs tested in water tanks he explained. The Navy measures each Blade of a propeller by taking a tracing of its shape z system with an accuracy to within five one thousandths of an Inch said Henry e. Watson who headed the research team that developed the device. Iris which will be ready for production in september is five times As accurate and will be 10 times As accurate when enhanced computer software is added Watson said. Scale models will still be tested in tanks but the greater accuracy of Iris will improve the correlation Between design and performance giving designers a better idea of what results a Given change in shape will produce. In a test this Spring Iris was Able to detect a layer of paint on one part of a propeller Blade he said. Iris gives a three dimensional readout of the exact measurements of a propeller Blade and How it compares to the design. This is the cutting Edge of technology Watson said. There is not another system like this in the known world. If the soviet Union has it it s behind closed a computer guides the system s laser probe across a propeller Blade measuring 5,000 Points on each sweep Watson said. Overway said Iris is especially useful because it allows the measurements to be concentrated around the edges and tips of the Blades. It s the edges and tips where the future advances in performance lie Overway said. Above a certain Speed depending on the shape of the propeller Blade the tip of the Blade will move too fast for the water to keep up. In a process called cavitation that produces a vacuum cavity which separates from the Blade and Breaks up into bubbles like the spiral of bubbles that Trail a Fisherman s speeding outboard motor. The bubbles quickly collapse producing sound. Changing the outline or the Complex curve of the made can change the propeller Speed at which these noisy bub Bles begin forming and a successful design can result in a submarine which can go faster with less noise. Penn state researchers developed Iris Over 2vj years with a $4 million Navy Grant much of the technology was derived from a High Preci Sion High powered laser welding device that was devel oped with a 3 a year $ 10.5 million Navy Grant and also is expected to be ready this fall Watson said. Iris also has a number of civilian applications he said. More than 50 companies in Fields ranging from computers to cameras aerospace and medical supplies have expressed an interest in Iris Watson said. Its inc. Of Minneapolis which built Penn state s prototype will manufacture the device for about $750,000, he said. Pershing Issue threatens arms Accord soviets say new York a soviet negotiators said sunday that disagreements Over missiles and . Nuclear warheads i Germany pose the most serious threat to reaching an arms control agreement be tween the superpowers. But an american official said mos cow s demand that the United slates scrap nuclear warheads that it controls for Germany s 72 Pershing a missiles was a ploy to delay negotiations. And Well go on and on with soviet Bluffs Kenneth Adelman director of the . Arms control and disarmament Agency said on the lbs television interview program face the i predict to you right now that before soviet Leader Mikhail Gorbachev signs on the dolled line there will be two or three More issues come up Adelman said. Viktor Karpov chief of the soviet foreign ministry s arms control depart ment said during an interview on the same program that the dispute Over the Pershing 1a missiles and warheads is the stumbling Block to we feel this is a Security problem not just for the soviet Union Karpov said. . Officials maintain that the per Shing Las should not be included in discussions to eliminate intermediate Range nuclear missiles because they Are con trolled by Germany and included in nato agreements. Alexei Obukho Deputy chief soviet negotiator said on another program that a agreement is close at but during an interview on the Abc network s meet the press show he called the Pershing a Dis agreement a serious our position As of now is that All the warheads All the american and soviet War Heads on medium Range and Short Range missiles must be scrapped in order to have a global solution Obukho said. Chief . Negotiator Max Kampelman said on the Abc program that the unite states will not change its position regarding the Pershing a missiles and warheads. The United slates will not agree to a provision that adversely affects an ally Kampelman said. It would be irresponsible for us to do that. These Are German last Friday the soviet Union presented a draft treaty calling for the two superpowers to Cut their Long Range nuclear arsenals in half but it linked the Accord to limits on the ."star wars program. . Officials said reductions should not be tied to american space and defense systems. In the treaty presented during a joint plenary meeting of the Geneva arms talks the Kremlin also called for the 50 percent reduction to be achieved in five years. The United slates presented a treaty in May thai called for 50 percent reductions but Over seven years. The two sides also disagree on How to implement the reductions. Up photo new yorkers show their Street smarts new York dry dwellers learn to make do in the worst of conditions. When a water main broke in lower Manhattan Friday a woman shed her shoes and waded across 14th Street. Erin the store owner wasted no time in Gett fag out his sign announcing a flood Sale for his merchandise. Former army nurse leads Vietnam vets1 group Washington up former army surgical nurse Mary Slout was sworn in sunday As president of the Vietnam veterans of America becoming the first woman to Lead a National veterans group. About 400 via convention delegates overwhelmingly approved Slout 43, of Arlington va., for the Post saturday night Over two male combat veterans. This is going to put the other veterans groups on their ear we have a lady As a president said Veter an Patrick Kline 37, of Petoskey Mich. The key in l that she is a Man or a woman but that she is a Veteran and a Good one he said. The via said Slout received More than 60 Pyrc Cal Folh Volc. Stout who served in Vietnam in 1967-68, succeed1. Bobby Muller 42, who in 1978 founded the Organiza Tion which now has 35,000 members. Muller has been a key National figure during the past decade in winning Public recognition and Federal assistance for those who fought in Southeast Asia and he has been called the heart and soul of the Vietnam veterans movement. He did not seek re election As via president and he supported Stout who had served As the Organiza Tion s National Secretary since 1985. After being sworn in Stout in the interest of time dispensed with her prepared remarks the text of which had been Given to news organizations. In the text of her speech. Stout said clearly the climate is changing and that s a Welcome sign. But we would be foolish not to remember this re Csc notary fact no one is going to help us unless we first help the text said that although the american Public is not willing to talk about the Vietnam War it will take the tireless efforts of Vietnam Veteran working together to keep the Issue of the Post Vietnam Era in the Public s Stout said the via must remain in the Lead in seek ing adequate health care for those who served in Viet Nam. She condemned the Veteran administration s sluggish funding for Post traumatic stress syndrome described the a s attitude toward the disorder Asho hum and completely although More than 4u percent of the in patients treated in a hospitals arc there for neurological or psychological conditions the a appropriates Only 9 percent of us budget for menial health Slout said in or prepared remarks. P h
