European Stars And Stripes (Newspaper) - September 28, 1967, Darmstadt, Hesse                              The stars and Stempk  attention getter at Frankfurt Auto show Thor ado september 28, t967 new German Sedan boasts a rotary Piston engine by Peter Kuhrt staff write Frankfurt is trim racers and futuristic sport models which usually draw the biggest crowds had to compete for attention at the just concluded International Auto show Ian with what looked deceptively like just another Ordinary medium sized Sedan. The Magnet was the All new German Nus to 80. Throngs of visitors h and to wait a turn at peeking under the Droop nosed Hood harbouring the world s first rotary Piston engine in a Standard  also As the Wankel engine after its German in Ventor Felix Wankel it was introduced to the Public in 1964in a mini sports car called the  car did t break any sales records but its unusual engine raised a lot of dust in the automotive  ironing out the bugs engineers proceeded to incorporate it in the design of a Fig.1 chamber a is at its smallest denoting the end of the exhaust  the beginning of induction. Chamber b is being compressed. Chamber c is expanding after combustion. Fig 2 chamber a continues to grow larger induction continues. Chamber b is being further compressed. Chamber c has reached its maximum volume i. E. End of the expansion phase and the exhaust port is uncovered. To Fol Fig. 3 chamber a continues to grow larger As induction continues. Chamber b is at its smallest maximum compression has taken place and the mixture is or will be ignited. Chamber c is growing smaller As the exhaust gases escape through the port. Fig. 4 chamber a has approached Ita maximum volume the Inlet port is about to be closed. Chamber a expansion phase in Progress Gas pressure acting on the Rotor flank turns the eccentric Shaft. Chamber a exhaust phase in Progress. The result was the $3,500, up for rotary which made its Bow at this year s Ian amid plenty of fan fare. What is so revolutionary about the Wankel Power Plant and How does it operate its main feature is a roughly triangular Piston revolving around an eccentric Shaft the equivalent of the crankshaft the to engine works with twin pistons in other words the engine has no reciprocating pistons and connecting rods which must be accelerated and retarded at the beginning and end of every stroke. Consequently it does t require complicated induction compression expansion the next figure would in effect be a repetition of Fig. 1 except that the letters will have moved round and the phases would then be repeated in sequence. However the eccentric Shaft equivalent of crankshaft has made one com plete revolution and one Complete thermodynamic Cycle has occurred. Three Complete cycles take place during every Complete Rotor Revo Lution which requires three crankshaft revolutions. Valve  this kind of simplicity the Wankel requires less than half the moving parts of a Reg ular engine. Moreover All of it essential parts rotate cutting Down vibration and noise to the Barest minimum. Nus says the engine s Prin Cipal advantages Are compact proportions about half those Ofa comparable Normal engine Light weight and the concept of arranging the mechanism so that the sequence of the Cycle occurs in rotary  otherwise says the manufacturer the Wankel is an inter Nal combustion engine possess ing the same physical characteristics As the familiar reciprocating Piston engine. It is a four Cycle engine with clearly defined thermos Nam i c  who took the to 80 out on the roads reported the most striking thing about the engine s performance was the fact that it became quieter the faster the car ran. It develops130 horsepower at 5,500 rpm it really takes some mental readjustment wrote one test Driver. At top autobahn speeds there is none of that loud humming which would remind of this car s Speed and  loudest noise. Is the air Rushing by the  there in t even much of lesson repeated at con Thien in enemy is hard to Hoot out by Fred s. Hoffman Washington a Veter an . Officers say the Battle of con Thien is driving Home again the lesson Learned in world War hand Korea that massive Airpower and big guns have Only limited effect against a dug i enemy. These officers Many of who saw action in both earlier wars said the Only Way to do the jobs to Send in infantry to Root out enemy batteries burrowed int holes and caves. Current . Policy forbids any . Infantry attacks across the Border into North Vietnam from which most of the communist Ai Tillery fire is aimed Atcon Thien. . Sources said the North vietnamese have arrayed be tween 75 and 125 artillery piece North of the Ben Hai River  soviet designed guns ranging from 85 to 152 Millie ters have been pounding the . Marine outpost about 2miles South of the demilitarized zone for nearly a month.. Batteries have fired As Many As 10,000 shells at the North vietnamese guns in a sin Gle  was 10 times As Many As the North vietnamese gun were throwing at con Thien. In addition Waves of .bombers and fighter bomber s dumped 600,000 pounds of High explosives on enemy positions. The american officers said i appears the communists wheel their artillery out of caves and tunnels to fire and then Proba Bly Roll them Back in under cover. In addition communist mor tars ranging from 60-millimeter to 120-millimeter weapons fir into the outpost from positions inside South Vietnam West an South of con Thien. These mor tars Are believed dug into peepholes. Experts said american shells and bombs would have to score direct hits or near misses to collapse the caves Tunnel Sand holes from which the communists Are pumping rounds into the Marine outpost. The communist artillery an mortars Are believed highly to bile so that they probably Are shifted from position to position after bursts of fire. This makes them hard to hit too. So far As is known Here the communist positions for the most part Are not reinforce with Concrete but May be shored up with Timber. The marines have available totem a new army produced to bile radar designed to detect the positions of mortars and other High Angle weapons such a howitzers. The specifications say these mortars can locate a position with an accuracy of about 160 feet at a Range up to about similes. But officers acknowledge that the radar has limitations in that it emits a relatively narrow beam and must be pointed in the direction from which the enemy s fire comes in order to spot the trajectory and plot Witback to the mortar or howitzer position. There is a difference i opinion among . Military men Here As to How severely the american air and artillery bar rage May be punishing the North vietnamese gunners and mortar men. One . Army artillery authority said the North Viet namese have to be  he said he considers it remarkable that they Are willing to take heavy losses in people and guns and keep on with their  but other americans who re member world War ii and Korea dispute the belief that the enemy is being badly bloodied. I ran into this kind of thing on iwo Jima and Okinawa said one Marine  they get enough cover it s hard to Knock them out eve with a direct  Gen. William c. Westmore land . Commander in South Vietnam has said that .forces facing the demilitarized zone Are laying Down the heaviest concentration of firepower in the history of  records appeared to cast doubt on  example the history of the army air Force in world War ii says that the total weight of explosives rained on iwo Jima in february and March of 1945 amounted to about 2,300 tons or about 4.6 million pounds per Square mile. Yet Many of the Well constructed and cleverly concealed positions were untouched an had to be captured or sealed up by tank infantry demolition teams the history says. An army historical report on the Battle of Cassino Italy in Early 1944 says that 475 heavy and medium bombers dropped about one million pounds with in the 1,400-Yard by 400-Yard limits of the town in s1/  the enemy was Dis organized the history says the did recover and took up Strong positions in the ruins. That because of the car s advantageous aerodynamic de  its birth pangs chatter Marks Apex Seal Wear and excessive Oil consumption area thing of the past the firm  opinion apparently is shared by manufacturers another countries who have obtained licenses to build engine based on the Wankel principle. The japanese reportedly Are planning a car with a rotary Piston engine and two year Sago the american Curtiss Wright corp. Announced that stand Rolls Royce had received a joint contract from the British government to develop a wan Kel Type engine. The Man who dreamed up the revolutionary engine 65 year old Felix Wankel of Lin Dau Lake Constance does not even hold a formal engineering degree and describes himself As an autodidact a self taught Man. He says he has tinkered wit the rotary Piston concept since the 1920s but did t perfect his invention until 1951. Even then years of More research and improvements were necessary be fore the engine could be marketed in the Wankel spider. Wankel is convinced that on Day his engine will replace the conventional reciprocating engine in the automotive Indus  City Council of Neckar Ulm Home of Nus apparently agrees. It has just voted to name a Street after the bespectacled inventor. A european edition col. James w. Campbell Usa editor in chief it. Cou. F. 6. Michael jr., u8af Deputy editor in Chi Arnold Burnett managing editor Elmer d. Frank., production manage Henry 8. Epstein circulation manager an unofficial newspaper of and for the . Armed forces printed Dally a Darmstadt Germany under the auspices of the office of the chief of Public affairs he Usa eur. Military address the stars and stripes Apo 09175. International mall the stars and stripes pest Fach 1034, 61,Darmstadt, Germany. Tel Griesheim c prefix 06155 2071 m Darmstadt air strip prefix 2376 741. New York office 641 Washington St new York 10014, Tel area code 212 620-6771. Second Clas postage paid at new Vork . ". The United states is an open society in which the people s right to know is cherished and  president Lyndon b. Johnson