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CNN CNN Primetime June 4, 2024 01:36:00

We all became familiar with bird strikes, with ambassador sully and the miracle on the hudson more than a decade ago, and they re still reeking havoc in the air. a flight from cuba recently made an emergency landing. we go inside a simulation. reporter: a passenger jet takes off, climbing rapidly over 200 miles an hour. birds. reporter: then calamity. birds slam into the nose, wings and engine. that happened to captain sully leaving new york in 2009. we lost thrust on both engines very quickly, almost simultaneously. reporter: the effect was ....

Bird Strikes , Delta Flight , Emergency Landing , Passenger Jet , Captain Sully , New York , Birds Slam ,

CNN Early Start With Christine Romans June 4, 2024 09:28:00

Or the interception fails, an icbm launched from north korea would take a little bit more than 30 minutes to reach the homeland u.s. and also east coast will take slightly more time. reporter: they simulated an attack. and the simulation shows 33 minutes from the time of launch to the time of impact if u.s. missile defenses fail to shoot down the icbm. missile defense begins here. reporter: for years u.s. leaders have reassured the public. the nation should be very confident. reporter: and america s allies. we will shoot them out of the sky. reporter: missile defense systems can keep them safe. but virtually all ballistic missiles travel at more than five times the speed of sound. sometimes faster. it has been described as hitting a bullet with a bullet. ....

North Korea , United States , East Coast , Rogue Nation , Missile Defenses , Missile Defense , Missile Defense Systems , Speed Of Sound ,

"A simulation model to study truck-allocation options" by W. Zeng, E. Y. Baafi et al.

We present a discrete event simulator, TSJSim (Truck-Shovel JaamSim Simulator), for evaluating the stochastic and dynamic operational variables in a truck-shovel system. TSJSim offers four truck allocation strategies: Fixed truck assignment (FTA), Minimizing shovel production requirement (MSPR), Minimizing truck waiting time (MTWT), and Minimizing truck semi-cycle time (MTSCT) including the genetic algorithm (GA) optimization and the frozen dispatching algorithm (FDA) optimization rules. Multiple decision points along the haul routes for all the trucks close to the decision points were included in the model. The simulation results indicate that the trends associated with production tons and queuing time utilizing the four truck allocation strategies (MSPR, MTWT, FDA, and GA) all demonstrated similar patterns as the fleet size varied. As the system fleet size increased, the system production tons under these strategies at first increased significantly and then remained relatively consta ....

Truck Shovel Jaamsim Simulator , Ruck Allocation Strategy , Ruck Shovel System ,

CNN CNN Primetime June 4, 2024 05:12:00

To see the actual runway environment. fog and low visibility worthy where the conditions in austin, texas in february. a fedex plane was approaching the international airport to land as a southwest plane was supposed to have taken off from the same runway. with the weather, it would have been hard to visually confirm. maybe by now, that southwest should be off the ground, maybe i should be able to see on my radar. southwest aboard fedex is on the go. at the last minute, fedex pulled up and an action led by the pilots, the two planes came within just 100 feet of each other. they are the types of scenarios that the school transfer in the simulator. contact departure i think what is most important is i can learn from any mistakes that happened in the real world or even our simulation. treat it as a learning opportunity. we are always trying to look at the positive side and prevented for the future. what would you say the weight of the job is? you hold peoples lives i ....

Southwest Plane , Runway Environment , Faction Led , Each Other , School Transfer , Contact Departure , Learning Opportunity ,

"Simulation and optimum control of a two-stage compression air source h" by Shuang Jiang, Yao Yu et al.

Two-stage vapor compression technology can effectively improve the performance of an air source heat pump, and a staged compression system with two separate compressors has a highly flexible modulation capacity. However, the effect of different volume modulation approaches on the heating COP requires further analysis. In this study, a Modelica-based dynamic simulation model of a two-stage air-source heat pump was developed and verified with experimental data. A numerical optimization method was used to obtain the optimum frequencies and low- or high-stage cylinder volumes of the compressors that maximize the COP. The results show that the three optimization approaches have different effects. At lower ambient temperatures, varying the high-stage compressor cylinder volume can yield the maximum COP among the three optimization methods, followed by varying the low-stage compressor cylinder volume and compressor frequencies. At higher ambient temperatures, varying low-stage cylinder volume ....

Air Source Heat Pump , Wo Stage Vapor Compression ,