August 24, 1982

The hoopla of September that once ushered in the new model year here is long gone. Trying to make the best of a market that has stubbornly refused to respond to three years of rebates, new models and advertising blitzes, car makers have stretched the season for introducing new cars to the point where it is now as long as a Detroit winter. While this September will bring some new offerings, it will be marked more by marketing wrinkles and luxury models rather than breakthroughs, and the introductions will continue through the spring of 1983. One of the few new developments will be the appearance of another domestic auto manufacturer on Nov. 1, when the Honda Motor Company plans to start production of its 1983 four-door Accord models in Marysville, Ohio.

Israel complained today that Palestinian guerrillas leaving Beirut were being allowed to violate a carefully negotiated withdrawal plan through improper supervision. Officials in Jerusalem said there was no apparent registration of the guerrillas, that they were departing with weapons and equipment they should be leaving behind and that women and children disguised as men were included among those going. At the same time, the Israelis expressed satisfaction at the election of Bashir Gemayel as President of Lebanon. Prime Minister Menachem Begin sent Mr. Gemayel, the leader of the rightist Christian militia that has been long allied to Israel, a message signed ''Your friend Menachem Begin.''

''Leisure should be relaxing. Possibly you like complicated puzzles, or chess, or other demanding intellectual games.

The Department of Justice and the Pentagon have created a special investigative unit to prosecute fraud in the Government's multibillion-dollar purchases of military equipment and services, according to Defense Department officials. Michael Eberhardt, director of the Defense Department's Criminal Investigations, Policy and Oversight Office, said that the unit was intended to ''fill a sorely needed vacuum of support from the Justice Department for Defense Department's criminal investigations.'' The new group, which met informally at the Pentagon for the first time Friday, is being organized in part to ease public concern that the $178 billion that the Reagan Administration has requested for the military in the next fiscal year might be misspent. Administration officials also hope that the creation of a high priority unit to combat fraud will ease some of the political criticism of the large increases in military spending being sought at a time when social expenditures are being slashed.

EDWARDS AIR FORCE BASE, Calif. ASOUND from yesteryear is being heard again in the skies over the Dryden Flight Research Facility here. It is the sound of propellers, for aeronautical engineers, in their efforts to develop more fuelefficient airplanes, have been busy of late reinventing the propeller. Flight tests, scheduled to end next week, have encouraged the National Aeronautics and Space Administration to negotiate a contract for new propeller construction, and helped persuade Congress to approve funds for further research that is expected to lead to propdriven airliners capable of flying as high and as fast and presumably as quietly as today's jets. By its action, Congress overturned the Reagan Administration's plan to kill NASA's propeller research program. G. Keith Sievers, manager of the Advanced Propeller Project at NASA's Lewis Research Center in Cleveland, said current studies have found that 150-passenger airplanes powered by a couple of advanced turboprop, or propfan, engines would burn one-quarter less fuel than the most efficient jets. Such estimates appeal to airplane manufacturers and the financially-troubled airline industry, where rising fuel costs now account for as much as 60 percent of direct operating expenses.