Justo después del amanecer del 22 de mayo, Facebook alcanzó otro hito emocionante e importante en el proyecto Aquila –completamos exitosamente nuestro segundo vuelo a escala real de la aeronave–. Esta voló por 1 hora y 46 minutos y aterrizó a la perfección en nuestro sitio designado.
Para poder lanzar la aeronave antes del amanecer, que ese día fue a las 5.15 a. m., estábamos en la entrada del Campo de Pruebas Yuma (YPG) en Arizona desde las 12.30 a. m. Mientras que unos miembros de nuestro equipo empezaban a abrir el hangar y levantaban la aeronave hasta su base de despegue, el resto de nosotros preparábamos las estaciones de control en tierra e ingeniería. Prácticamente todos revisamos las predicciones sobre vientos, constantemente.
El segundo vuelo de Aquila tuvo en cuenta todas las lecciones aprendidas durante nuestro primer vuelo. Antes de este, incorporamos una serie de cambios a Aquila que incluyeron:
La adición de spoilers a las alas, que incrementan resistencia y la propulsión en el acercamiento al aterrizaje.
Incorporamos cientos de sensores para recolectar más datos
Modificamos el software de piloto automático
Integramos nuevos radios al subsistema de comunicaciones
Cubrimos la aeronave con un acabado más liso
Instalamos un mecanismo de detención del propulsor horizontal para poder tener un aterrizaje exitoso.
A las 5-27 a. m., cuando el sol estaba apenas encima del horizonte comprobamos que la aeronave pasara todas nuestras verificaciones anteriores al vuelo: los vínculos de radio (redundantes tanto para la carga como descarga y con ancho de banda extra) eran funcionales, las superficies de control y los spoilers estaban libres y eran correctos y los cuatro motores respondían adecuadamente a los comandos.
Tras completar nuestra lista de verificación anterior al vuelo, nuestra corta espera fue premiada con poco viento medido y poco viento en las predicciones del clima. Un breve sondeo de nuestros pilotos e ingenieros nos dio luz verde para el lanzamiento. La velocidad de despegue estuvo calculada en 43.45 km/h, lo que notificamos a nuestro remolque. El equipo observó de cerca todas las pantallas, esperando la seña que confirmara que el piloto automático hubiera tomado el control y que la aeronave ya estaba subiendo, lejos de su base de despegue.
El lanzamiento fue normal. También se hizo evidente prontamente que todos los sistemas funcionaban normalmente: la corriente del motor, el seguimiento a la velocidad del aire, los indicadores de dirección, vínculos de radio y GPS diferenciales mostraban todos comportamientos normales. La única sorpresa que tuvimos fue del tipo alegre: la tasa de ascenso –54.86 mt/s– fue casi el doble de la de nuestro primer vuelo, lo que atribuimos a los múltiples ajustes de Aquila –puntualmente el acabado más liso– que implementamos desde el primer vuelo.
Así, continuamos nuestro ascenso hasta los 914 metros, esperando todas las señas que mostraban el buen estado de la aeronave antes de que esta excediera nuestro rango de vuelo planeado. Con todas las telemetrías “en negro”, continuamos subiendo. Por diseño, Aquila se toma su tiempo: asciende lentamente, desciende incluso más lento y cuando vuela con el viento no lo hace a más de 16-22 km/h respectivo al suelo. Hemos diseñado Aquila de esta forma porque su fin es quedarse en la misma zona por largos periodos de tiempo proveyendo acceso a internet. Aquila se alimenta de energía solar y es extremadamente eficiente –funciona con la electricidad equivalente de tres secadores de pelo–.
El segundo vuelo se trataba solo acerca de datos. Volamos para surtir largas pruebas a una velocidad, inclinación y altitud constantes para medir la resistencia de la aeronave. Los datos de estos “trim shots”, como los llamamos, serán usados para refinar nuestros modelos aeronáuticos, lo que nos ayuda a predecir mejor el consumo energético y, así, optimizar el uso de nuestras baterías y la ubicación de los paneles solares. También instrumentamos extensamente la estructura del avión, agregando cientos de sensores a este para entender cómo la forma de Aquila responde al vuelo en tiempo real. Estos incluyendo cientos de medidores de esfuerzo y tres ejes de medición de inercia (IMU). Estas herramientas nos sirven para verificar y refinar nuestro modelo estructural, lo que predice la firma estática de la aeronave –además, diseñada para ser muy flexible y responder tanto a los vientos como a las maniobras–.
Durante todo el vuelo, continuamos monitoreando la resistencia creada por los nuevos spoilers de Aquila en diferentes ángulos. Estos spoilers son estructuras móviles en el ala de una nave que le permiten incrementar la resistencia para reducir la velocidad y la propulsión. También probamos la fuerza de señal de los dos vínculos radio desde varios puntos angulares.
Después de probar el algoritmo de aterrizaje con una versión elevada, hemos puesto la nave a hacerlo de forma completa, y exitosa, en el lugar designado.
Aquila no tiene un mecanismo de aterrizaje en el sentido tradicional. En cambio, aterriza sobre bases de Kevlar unidas a la parte baja de las cápsulas del motor. Nuestro razonamiento para esto se debe a dos razones: primero, aterrizamos a una velocidad respecto al suelo y nos acercamos al suelo de forma muy lenta, para que podamos disminuir el peso y la resistencia en las riostras y ruedas; y, segundo, porque mucho del peso de la aeronave está concentrado en las cápsulas del motor, pues es acá que están instaladas las baterías. Una vez las baterías han tocado suelo, detener el descenso del resto de la aeronave no representa un gran esfuerzo para la estructura.
Para la base de aterrizaje creamos un círculo de 152 metros de gravilla de unos 15 centímetros de profundidad con la consistencia de arena gruesa. El vuelo de Aquila es autónomo salvo por intervenciones manuales, como las necesarias para alinearse con el viento. Por lo tanto, justo antes del aterrizaje, el equipo de vuelo carga un plan de aterrizaje basado en la dirección del viento para que la aeronave aterrice con el viento y respetando el límite de vientos cruzados.
Al aterrizar Aquila sigue un camino de descenso con inclinación de 3 grados que empieza en el aire y termina en el piso. Una característica de este tipo de aeronaves es la baja resistencia –es la única forma posible de volar con la energía limitada que provee la luz solar–. Pero mientras la resistencia es el archienemigo del vuelo, ella es la primera aliada del aterrizaje. Los spoilers que agregamos a la aeronave son controlados por el piloto automático. Cuando este siente que la nave excede la inclinación, cierra los spoilers. Cuando siente que está pode debajo, los abre más. Mientras tanto, como durante todo el vuelo, el piloto automático sube y baja su punta usando elevons, que ayudan a incrementar o reducir la velocidad de vuelo.
A unos segundos del aterrizaje, el piloto automático detiene los motores del avión y los bloquea automáticamente. Se bloquean así para evitar dañarlos durante el aterrizaje. Todos los motores están detenidos, pero solo uno de los propulsores está horizontal. La aeronave hizo contacto gentilmente en la superficie de aterrizaje y se detuvo en unos 10 metros. Fue absolutamente perfecto. Igual que cuando se conduce un auto en gravilla, aterrizar la aeronave en este material causa apenas unos pocos y fáciles de reparar rayones. En todos los otros aspectos, Aquila aterrizó en la mejor forma.
Desde nuestra estación de ingeniería, en las cercanías, el equipo de Aquila vimos una transmisión de video que nos mostraba la vista desde el aire, tomada por nuestro helicóptero de seguimiento. Tuvimos asientos de primera fila para ver a la aeronave deslizarse suavemente hasta la quietud en una nube de polvo –y ver a la estación de ingeniería levantarse en aplausos–. Después del aterrizaje de Aquila, el equipo de YPG informalmente bautizó el área de aterrizaje como “Playa Aquila” –¡nombre que nosotros estuvimos orgullosos de adoptar!–.
Sobra decir que el equipo entero estaba sumamente feliz con estos resultados. Nuestro objetivo de conectar a la gente con aeronaves de vuelo a gran altitud y con energía solar es valiente, pero hitos como el marcado por este vuelo hace que meses de arduo trabajo valgan la pena. Por eso, es particularmente gratificante, que las mejoras hechas según el desempeño de Aquila en su primer vuelo hicieran una diferencia significativa en este segundo vuelo.
Erich Wetzel, líder de la Amti, participó en el 9° Foro Nacional IMEF de Infraestructura, en el que se ventilaron acciones clave encaminadas a ofrecer respuestas a los retos de la demanda de servicios de punta.
La participación del ferrocarril en el transporte de carga en México ha crecido de manera continua y ha alcanzado niveles comparables con varios de los grandes sistemas ferroviarios del mundo.
Desarrollar, mantener y mejorar la relación cliente-marca es un dilema para los negocios que están sumergidos en una gran cantidad de datos e inmediatez.
If you don t let me, I will complain to you. There are so many of you, which seriously affects my rest.Ma yesterday, so you came to me to plead for mercy Listening to Du Heng s teasing, Du Xueting s face fell a little, Which Cbd H7r Gummy Is Best For Pain Fugj Uncle, Teacher Ma asks me to copy prescriptions every day.
But no matter what identity I use, I want to discuss it with you.After hearing what Du Heng said, Wu Shengnan s father suddenly let out a sigh of relief, That s enough.
On her eighth birthday, she transformed directly into a woman.Du Heng and Dong Yuezhang were both furious with this woman, but they had no choice but to watch the woman being arrogant.
It has been a week and there is no progress at all.I just need to replenish qi, activate blood circulation and remove blood stasis.
As Zhang Yongjun spoke, he Shark Tank Cbd Gummies Episode Full Episode U5f6 8efs0xp looked at some of the people present, with a look of pride in his eyes.At this time, just like last time, Duda s house was already surrounded by people, and it was overwhelming.
However, he didn t want Zhang Dewen to avoid him and said to the junior student, You should go back by yourself first.Call someone in and let me take a look. Okay, I ll call you now.
What to say later. Du Heng took a breath and said, Sister, don t cry.Du Heng raised his eyebrows. It seemed that being expensive had its own reasons.
Dr. Ma is also focused on diagnosing and prescribing calmly.But Du Heng shook his head directly, That won t work, the prescription I prescribed for you is to purge fire, expel pus and remove toxins.
I m going to use the toilet. then you go. Wu Shengnan ignored Du Heng and turned around to continue chatting with Feng Su.Halfway through the pulse diagnosis, Du Heng suddenly said, Let me take a look at the tongue coating.
He leaned back, pursed his lips and stared, his belly suddenly straightened out, and he kicked Du Heng on the thigh opposite him, You bastard, you just had two good days.Everyone couldn t help but look back and saw Du Heng standing behind with his hands behind his back.
In fact, this goes back to what I just said. When liver qi is strong, liver fire is strong.Fortunately, I found a very good lawyer and only paid a few hundred thousand in taxes.
Let alone entering the old forest now, I estimate that even two baskets of soil would weigh me down and prevent me from getting up.At the beginning, I always felt that I had not slept well and was sleepy.
Okay, I m a straight man, I made a note of it. Du Heng closed the Where Eol978m0o To Get Cbd Gummies Without Thc A Comprehensive Guide Wucg rear door, Hurry up and go home, your mother is already anxious.Du Heng looked at Director Zheng s expression and felt really uncomfortable all over, but he also became more determined that he was really not suitable to be the director of a health center.
Du Heng just smiled at Wu Buwei s words of such an angry young man, and then said, The second hateful thing about this group of people is that they use the form of nine truths and one falsehood to constantly change the mentality of our Experience The Bliss Xl9y Of Dispensary Cbd Gummies Unlock A World Of Wellness And Relaxation Gp2q people.I can t use the money, but my brother, my niece, my nephew, and my children can use it.
After the children were gone and the sister in law helped others, Du Heng sat down with his eldest brother to chat.Du Heng did the same. True to his word, I went to see Gong Daoyang in the morning and re examined him.
Du Heng said slowly, letting the patient listen slowly, And kidney water is this engine oil.Ma and instruct him on the process of decoction. Dr.
Don t tell me, someone actually turned around to catch the boy s urine.Du Heng is really calm now. In four months, there were more than 4,000 cases.
What do you mean the female accountant asked just because she didn t understand, and she definitely didn t pretend.All values, although still not within the reference range, are very close.
What I told the old lady is that the old man needs to go home for recuperation.I ve also heard about this, someone has been cheated, and they even had a fight with the village doctor.
Do you think we can still sit here Be careful and you are not making a big mistake.Then he said something to his family members and took them to his office.
It only needs to have a department of traditional Chinese medicine, internal medicine, and surgery.Wang Shizhen nodded clearly. He turned his head and saw that the pharmacy doctor was still checking the medicinal materials, so he shouted, Old Shi, that s it.
After the treatment was over and Du Heng packed up his things, he went out and called Wang Lili into his office.Brother, thank you for this today. Don t say that to Brother Gong, I m doing it for myself too.
Even if I close my eyes, I feel light headed and my whole body starts to spin.You must also be bold and careful. If you pinch it in the wrong position, the fetus will be injured, which is a medical accident.
Du Heng was so quick that he didn t even react, let alone stop him.She stocked up a room full of goods, but in the end she couldn t sell them, so she disappeared and never came back.
But what happened last month was that they did something wrong, and in the end they owed Du Heng a favor.At this time, Du Bing s wife still had a long, trembling needle hanging on her forehead.
He just came in and lay down on the sofa. He ate a few mouthfuls of watermelon and some fruits.For example, in my own health center, not to mention that everyone goes to Can I Fly With Of3o63kk2 Cbd Gummies A Comprehensive Guide To Air Travel And Cbd Epv6 work normally on Saturdays and Sundays, even when they get off work during the week, no one wants to stay for an extra minute.
After saying that, Du Heng took a serious look at the old man and said, Can you understand what I say Then after listening to it, , which part of what I said is wrong Do you have these symptoms The old man s face was so red that he was about to Understanding The Benefits Of 60 Mg Cbd Gummies Ipy7u2beu For Enhanced Wellbeing Tlfe bleed, and he lowered his head and did not speak.Dong Yuezhang s transfer information and the messages he sent were all blocked.
Now that he was fine, Du Heng finally slowly moved to the side, away from the big stove that was the police.People sometimes seem very weak. However, he did not express too much emotion.
Du Heng was stunned for a moment. He suddenly said, Holy crap, isn t that your sister s name Is that girl your sister No wonder the grandson felt uncomfortable just now Cannadips Cbd Pouches Review A Comprehensive Analysis Of Quality And Effectiveness 0fzin Zqari H4xu No wonder my brother in law didn t dare to say who it was for a long time because of his look on his face That s what happened He also said that someone else coveted Zhao Xinfang s appearance, but it turned out that he was the one who wanted to guard and steal.
However, considering Liao Yuzhu s status as his daughter in law, Wang Shuqiu s father could only stay far away and keep looking at the child through the swaddling clothes.You are really brave for a master of art. Du Heng smiled bitterly.
He didn t know whether others knew about this award, but he himself knew what this award meant to their institutions.So what is Du Heng doing Of course, I gave medicine to Wang Shuqiu s mother.
But if I win the second prize, I don t have to wait four years.If it is relieved, you must notify me as soon as possible.
After hesitating for a long time, when he saw Du Heng closing the cap of his pen, he couldn t help it anymore, Teacher Du, can I ask you a few questions Du Heng checked his prescription and nodded at the same time, You ask.After attending Wang Fangyu s full moon wine and recognizing a godson, Du Heng Blissful Aura Cbd Gummies For Ed D8dimh L3ig is also ready to fulfill his promise to Liao Yuzhu, and at the same time, he is also ready to cure his own heart ailments.
This is the result of the ten of us. New 512 I want to vent your yang energy Where is he now Du Heng frowned tightly when he asked.At noon, you will come up with a treatment opinion, and I will report it to the Health Commission and the Municipal Bureau according to your treatment opinion.
Don t think that you can fly freely after leaving the unit.What he saw was another face with high cheekbones and a dark complexion.
This makes your surgical cure highly successful. However, There should be no way to guarantee fertility.Qiu Pingzhen asked with some confusion, Does the director have anything else to do You should know who leaked the patient information, right I know, it should be Dr.
A man of only thirty years old actually starts thinking about an old Chinese doctor.You.
Even, I doubt you, you may not have a medical qualification certificate at all.
But I just don t have a brain, I won t take the initiative to do anything.The level of shamelessness has not been raised yet, and I have not yet been able to talk and laugh happily.
When he got up, he threw the stool back hard, and the stool directly hit the man behind him.Moreover, because these hospitals are general hospitals, their hardware and software are The Benefits And Effects Of Vibez Cbd Gummies For Overall Well Sm4f Being Rawgb Hbkb not comparable to those of municipal maternal and child hospitals, and the gap is not generally large.
Private pain The post was stunned. I studied Binshun scar directly for a while.Xiao Du, you have made progress again. Li Jianwei suddenly said with emotion.
He didn t catch up with Du Heng s train of thought.Any small change in the equipment or the child s body would make several people panic.
Du Heng looked around at the people around him with a cold face, Write down the names of everyone present, and watch the fun here one by one.We are going to take wedding photos. You go with us.
He didn t feel depressed or anything because of Li Qin s rejection during this period.Du Heng didn t want to say much about the Internet celebrity, so he quickly used Cao Binghe as an excuse.
Something else. I have gone to see it and have it checked by professionals.It s too much. It s embarrassing. Lao Zheng nodded, and Qiu Pingzhen also expressed his acceptance.
It s the B ultrasound sheet of the liver area, and it also says normal echo on it.to arrive at the correct diagnosis. M.
Lan Changhua was depressed. He sighed again and said, But I still tried it.
Several fell down in an instant. Two people even fell directly on top of the woman when they fell to the ground.After putting down the things, they went out to get them themselves.
That s just right. Now we, the elders, will leave all these to you.But as the words fell, everyone around him started to He didn t move his steps, and still maintained the same demeanor as before, and there were people who interjected a few words from time to time, not giving Du Heng any face.
What good things are we thinking about How we shoot, it all revolves around the starring role, there is no reason When To Take Cbd Sleep 0t2t Gummies A Comprehensive Guide Rcnw to focus on shooting the supporting roles.The patient also opened his eyes again. No matter how they argued before and how fierce they were, it could actually be seen as a battle of spirits and a debate over their treatment concepts.
Dr. Zheng and his director looked at each other, their eyes full of disbelief, but Du Heng was so powerful that both of them For a moment, I couldn t even talk.However, his problem with explaining in vernacular was also learned from Du Heng.
After taking a look at the screen on his phone, Guan Bo wanted to quit.It was Do Cbd Gummies Expire 3wuz Iqa7hu18l a half dead department. But there is something very different about the dental department, that is, they are not available in the inpatient department.
Du Heng didn t say anything more, but continued to touch lightly with his fingers, feeling the touch of his fingers while observing the aunt s face.The junior student was a little flustered, but he still said He said, Teacher, this is my fault.
You teach me. Du Heng glared at Du Xueting angrily.When Du Heng saw Director Zheng, he turned around and left.
Tsk tsk, listen, you re a duplicitous woman. Du Heng felt that Wu Shengnan had been led astray after spending a few days with Li Qin and Feng Su.Then he turned to Du Jun and asked, Sister in law, do you sweat a lot A lot when you drink water, especially a lot.
For example, the woman in front of me, who is forty years old, has been suffering from recurring aphthous ulcers for more than a year.Do you think a person who can start training doctors to treat strokes at the age of thirty cannot train doctors to treat tumors Everyone was speechless again and all became silent.
Ring the bell, burn yellow paper, and circle around Du Jun s wife who is still outside the house, while chanting something.As doctors, if you don t have great love in your heart, how can you talk about saving lives and helping the wounded I m afraid you will die without saving each one.
Du Ping shook his head, Du Jun s wife from above After being hanged for the first time and being poisoned again, I have been feeling not in good spirits.What if something happens to you That s a lifetime thing.
Can you do this Can not do Jin Zan reached out and touched his bald head from front to back, I won t tell you.Even though she was not Mbz Blissrise Me Cbd Gummies 8mmm in good health, she took Du Xueting to play in the mountains early the next morning.
As he spoke, he seemed to think of something happy, and said with a smile, My dad is very weird.As for the patient, let s go see the patient first.
The village director quickly stopped him and said in a low voice, Director Gong, Duda is crazy now.Dewu Shengnan was in a bad mood, so he comforted him softly, The case is now in your hands.
Especially when the familiar word Du Heng came into my ears, my brain nerves became active.Looking at Du Heng s expression, Du Xueting vomited Sticking out her tongue, she touched Gu Ya lightly, Tell me.
Por Martín Gómez | Blogspot Facebook.