General Motors Diesel Division Division. In 1965 GMDD was absorbed by the General Motors Detroit Diesel Engine Division. General Motors Diesel Division is not to be confused with General Motors Diesel, Ltd., the Canadian subsidiary of EMD formed in 1949, or the Diesel Division of General Motors of Canada, the entity for General Motors of Canada's diesel equipment manufacturing operations formed in 1969. Diesel engines produced by the General Motors Cleveland Diesel and Detroit Diesel Engine Divisions General Motors Diesel Division General Motors Diesel Division (GMDD) was a marketing and customer service unit of General Motors founded in 1938. It sought customers for GM's
HQ-61 have claimed that because of the new rocket motors adopted, the size and the weight of the missile is also reduced slightly, but this has yet to be confirmed by other credible sources. PL-11 is the air-to-air derivative of HQ-61, and it is also developed by the same developer of HQ-61, Shanghai Aerospace Bureau. The first successful flight test of PL-11 was conducted in 1992, and the missile entered Chinese service in the mid-1990s. The latest upgrade of PL-11 was completed in 2002. The first PL-11 was an air-launched HQ-61 armed with a mono-pulse SARH seeker based on Italian Selenia