Model Airplanes

Boeing CEO Dennis Muilenburg is apologizing to relatives of the 346 people killed in two fatal crashes of its 737 Max planes and said the company has work to do to restore the flying public’s trust.

“I do personally apologize to the families,” Muilenburg said in an interview with the “CBS Evening News” that aired Wednesday. “We feel terrible about these accidents. We apologize for what happened. We are sorry for the loss of lives in both accidents.”

Aviation authorities across the world grounded Boeing’s 737 Max planes in mid-March following a crash of one of the aircraft in Ethiopia. That crash happened less than five months after another Max went down in Indonesia. The worldwide grounding has hit the company’s stock, which is down more than 17% since the March disaster and left some airlines scrambling to find enough planes to meet peak summer demand.

Investigators in both crashes have implicated an automated flight control system that many pilots said they didn’t know about until after the first crash. That system appeared to have been triggered by erroneous sensor data that pushed the nose of the planes down repeatedly into deadly plunges.

Boeing is facing multiple lawsuits from victims’ families. The Chicago-based aircraft manufacturer and the Federal Aviation Administration are under fire over the regulator’s approval process for the jets, which included outsourcing some functions to Boeing employees, which is allowed under FAA regulations.

Boeing

Article source: https://www.cnbc.com/2019/05/29/boeing-ceo-works-to-regain-public-trust-following-737-max-crashes.html

By Julie Slama | [email protected]

“This is where we would fly our model airplanes very early in the mornings,” Canyons Board of Education member Mont Millerberg told a crowd of hundreds of neighbors.

He pointed beyond the yellow caution tape around Midvalley Elementary’s former grassy field east of the school, which had been torn up and become muddied from the rain the previous day when the groundbreaking was originally scheduled. 

“The neighbors would call the police, because the motors are very loud. The police would come, and we would grab our stuff and head to the back gate. I think the police figured giving us a good scare was justice enough, because we got away every time,” he said. “Then, the sign showed up.”

The sign, at the entrance of the school grounds, prohibits the flying of model airplanes.

“We proudly refer to that as the ‘Millerberg/Tennyson’ rule,” he said, pointing out houses of the Tennyson family, his grandparents and great grandparents across 7800 South. Millerberg now lives in that same block.

He recounted tales of how Midvalley school grounds served as memories for his childhood and for those of his children and now, grandchildren at the ceremonial groundbreaking for the new school on April 17, which was delayed one day because of downpours. 

Midvalley is the first elementary school to be rebuilt (at a cost not to exceed $21,242,000) from a $283 million bond approved by voters in November 2017. Already underway are the rebuilding of Hillcrest and Brighton high schools and additions for Alta and

Article source: https://www.midvalejournal.com/2019/05/29/200687/memories-aside-midvalley-community-eager-for-new-school

JOHNSTOWN — The Lazy Eight Radio Control model airplane Club will host a Community Open House on Sunday, June 9 at the club’s flying site, 144 Knoblauch Road in the Town of Johnstown (Behind Roger’s Family Orchard) from 8 a.m. to 4 p.m. to promote public awareness and interest in the sport/hobby.

All are welcome to join a day of flying demonstrations. Flight instructors will be available all day for free check-out flights for anyone interested in trying their hand at flying a radio controlled model airplane.

Free hot dogs and drinks will be available from 11:30 a.m. to 1 p.m.

For more information and driving directions visit www.lazy8rcclubjohnstownny.com.

Article source: https://www.fultoncountyexpress.com/lazy-eight-model-airplane-club-to-host-open-house/

May 28, 2019

Every day, Americans
rely on engineered systems such as bridges, buildings and offshore structures
that are subject to extreme weather, earthquakes and a range of other
conditions. Knowing how materials used in these systems respond to stressors is
crucial to creating components that successfully and efficiently do the job.

Engineers rely on
mathematical models to predict how the materials they use will react to stressors.
However, some “state-of-the-art” models for ductile metals that have been in
place for years have done an inadequate job of predicting when and how these materials
will eventually fail when exposed to repeated multidirectional permanent
deformation, a condition known as multiaxial ratcheting.

Heidi Feigenbaum, professor in Northern Arizona University’s Department
of Mechanical Engineering,
recently received a $544,758 grant from the U.S. Department of the Army to
develop a mathematical model that will more accurately predict how deformation
will accumulate and materials will ultimately fail under cycles of twisting,
pulling and pushing. Such a mathematical model has the potential to reduce structure
weight, minimize cost, maximize material efficiency and ultimately ensure the
Army will have safer and more reliable systems.

Feigenbaum will
work with fellow mechanical engineering professor Constanin Ciocanel and graduate and undergraduate students on
the project. She also will collaborate with engineers at the University of
California, Davis and the Institute of Thermomechanics,
Academy of Sciences in the Czech Republic, who are funded through different
sponsors.

Improving
safety, reliability and material efficiency

“We will develop a means to predict and
analyze ratcheting failure

Article source: https://news.nau.edu/feigenbaum-ductile-metals/