By George Nicholas Bullen
Sleek airplane production includes drilling and countersinking thousands to thousands of holes. Doing this paintings via hand money owed for sixty five% of the price of airframe meeting, eighty five% of the standard concerns, and eighty% of the misplaced time because of injuries.
The concentration of this ebook is on automating the method of drilling and countersinking holes in the course of airframe production. given that this can be the realm of maximum go back on funding for airframe manufacturers, the publication presents a stepped procedure for comparing attainable components for making use of automation and an in depth description of the method for selecting, buying, and transitioning the precise equipment for fulfillment. It additionally presents a imaginative and prescient for a ten- to 15-year destiny country of airframe manufacture. Read more...
summary: sleek plane production includes drilling and countersinking millions to hundreds of thousands of holes. Doing this paintings via hand debts for sixty five% of the price of airframe meeting, eighty five% of the standard matters, and eighty% of the misplaced time because of injuries.
The concentration of this booklet is on automating the method of drilling and countersinking holes in the course of airframe production. in view that this can be the realm of maximum go back on funding for airframe manufacturers, the booklet offers a stepped procedure for comparing attainable components for utilising automation and a close description of the method for selecting, buying, and transitioning the precise equipment for achievement. It additionally offers a imaginative and prescient for a ten- to 15-year destiny kingdom of airframe manufacture
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Glossy airplane production includes drilling and countersinking millions to thousands of holes. Doing this paintings through hand bills for sixty five% of the price of airframe meeting, eighty five% of the standard matters, and eighty% of the misplaced time as a result of accidents. the point of interest of this ebook is on automating the method of drilling and countersinking holes in the course of airframe production.
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Extra resources for Automated/mechanized drilling and countersinking of airframes
Military suppliers are restricted to exporting their technology to government-approved buyers, if at all, whereas commercial airplane producers can and do sell to whoever can find the money to buy. Military airplanes in the United States and Europe do not have competition. Once the contract is let, they are the source for all buyers. There is competition in the commercial market, and even though options are restricted, a commercial airplane can be bought by airlines from a number of sources. In military acquisitions, production tooling, method of manufacture, lot quantities, restricted sales, restricted profit, and single-source procurement disincentivizes the application of automated systems for production.
4 Time Horizon When a production line for an automobile is built, the goal is to get in and get the line running as fast as possible. Time is money. Money does not flow until the line ramps to maximum efficiency. Military production lines are built in blocks over time horizons that extend out ten years or so. This blocked approach to build production lines incentivizes a short-sighted approach to goals. 5 years with a completion bonus when successfully completed on time drives a ten-airplane goal.
The advancement in the field of airframe forensics and technologies to enable the evaluation of catastrophic failures has increased the emphasis on improving hole and countersinking quality. Fastener failure is attributable to the hole and countersink that the hole occupies. Escape defects and even marginally acceptable holes can cause catastrophic failure or reduce an airframe’s predictable life. Many structural failures can be traced to a defective mechanically fastened joint. For example, longitudinal and circumferential fuselage joints are among the most highly loaded parts of an airframe, subject to loading each time the aircraft is pressurized.