In 1934, on the eve of World War II, the United States Department of Defense bombers carried out the tender, Douglas, Martin and Boeing three companies to bid, Boeing lost a single high price.
In 1939, Hitler attacked Poland, World War II broke out. This is not only massive bombers tender, the military requirements and aircraft manufacturers to design for the European and North African battlefield bomber. In order to restore a disadvantage, in preparation for the World War II mass market, Boeing engineer Joel Ruisen Man to come forward and lead the team, while demand analysis, while doing the program, this is not emphasized weaponry and mobility, security key consideration. Bombers can not guarantee security, will become the mobile shooting range, so Boeing B17 bomber all critical components, such as air defense radar, engine power, weapon systems are all redundant design, known as the "Flying Fortress."
B-17 bomber reliability and safety of the design, approved by the military, the war also proved his strength, after battering still "shaky" to fly back to the airport, thus saving a lot of crew members, which exploits fighters "B-17 Memphis belle No." was also made into a movie.
Legendary World War II bomber "Memphis Belle No."
More importantly, Joel Ruisen Man led the team to a detailed analysis of the theater climate, topography, bombers parameters, study how the German bombers strangulation, how bombers out of the woods combat simulation, a bomber flying in formation design. The number of formations, units from different combinations of height, the number of escort fleet, the Boeing team gives detailed recommendations to ensure safe fleet, while guaranteeing maximum efforts to destroy strike, recognized by the military. The final total of the end of World War II Boeing B-17 bomber purchase 12726, Boeing established its status in the military, active duty US Air Force strategic bomber is still plenty Boeing B-52. 
Bomber formations
Joel Ruisen Man is not just selling a product (aircraft), but selling the entire war Solutions (formation design).
After the war, this type of engineer Joel Ruisen Man, is defined as Sales Engineer, Sales Engineer, also known as Presales or Consult Engineer, pre-sales and consulting engineers.
Focus on pre-sales capacity building, sharing plan templates, industry experience, confused answers to the workplace.
[QQ group]: IT pre-sales consultant (group number: 142 231 407)
a decade consulting and pre-sales team management experience, industry consultant / solutions experts