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.
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Anyway, I won t let you make such an ugly fuss today, you know.Lou, but the rules are the rules. In my heart, Bai Lao s sword itself is a priceless treasure.
A bunch of trash Seeing these four people running away, Du Tianhu gritted his teeth, his face full of hatred.Do you still need us to remind you Qin Feng chuckled If I say that this matter was framed by Qin Chuan and others, would you believe it The short haired woman sneered Haha, we asked before you came here.
challenge. Among the four geniuses Dietary Supplements for Weight Loss: Do They Really Work
present, only Xu Yue er and Wu Mian were his better choices.The Dragon Palace comes back to life, the sleeping dragon wakes up He stared at Qin Feng with burning eyes.
Thinking of this, Song Qinghui snorted coldly, knowing that Chen Chuqing was deceiving him.A group of women looked at Qin Feng with even more contempt.
She seemed as if He smiled casually and said Before I came here, I heard that there is a poison in the hidden sect Jiuxuan Sect.You know, let alone a nephew he has never met since childhood, even if Ye Zhenzhen is still here, he will still become the target of his attacks as long Are You Struggling to Shed Pounds? Try These Effective Weight Loss Pills
as it threatens his interests and status.
If people like Mr. Chu and the others didn t exist, would those bastards still have the opportunity to eat, drink and have fun now A bunch of bastards who are trying to kill people Fan Zhenhai didn t stop him this time, but instead showed a sinister expression on his face.Qin Feng, why are you still here Just as Du Long s body was being carried off the field, Dou Yi turned around and was surprised to find that Qin Feng was still there Seeing Qin Feng still standing there, Dou Yi and the others showed a hint of surprise on their faces.
All the power came from his hands. The strong push made him lose his balance.Du Luoyan took over the conversation with a smile. Qin Feng has heard about this.
Only Chu Huaijiang and others were still sitting where they were, motionless.And this female staff member happened to know the staff of the Bai family and knew about this situation.
Finally, it was Qin Feng who walked towards her Long time no see, why did you come to Longdu But Lin Wan er stabbed her as soon as she opened her mouth Haha, why, you are allowed to come to Longdu, why don t you let me come Her tone was a bit harsh, which made Qin Feng startled, and he looked at Lin Wan er with a somewhat probing look.
On the contrary, you brought the things into my aunt s room and deliberately framed me Video As soon as it was released, many people present fell silent.Don t worry, I will definitely play with you to death before I go to jail.
After his words fell, Xuanyuan Feng s expression became much more relaxed, but Ye Tiantian shouted angrily How dare you Those four Although his status as a martial artist from the Ming Yang Kingdom is not high, his status is very special.Han Qiusheng s New Dragon Gate Qin Feng was no stranger to him.
However, his reputation in Sichuan is very secretive, and Lin Wan er and the others have never shown their faces in Sichuan.But also because the minister of Splashing Star Hall in Longdu is his student.
You come from a small place. Mr. Qin and the others are the bosses of Shencheng. Why are you trying to frame you I think it s better for you not to waste your time.Qin Feng shook his hand casually, and the fish intestine sword turned into a bracelet and wrapped around his wrist.
Before her knife could reach her first, Qin Feng was the first to block it.Then he stepped on the chair and flew up. Faced with the siege of seven or eight people, he refused to retreat but advanced directly into the crowd.
If the older one takes action
even if we are not afraid of him, Qin Feng is the first disciple of Long Daoling to close his door in ten years.This matter needs to be discussed. If I want to deal with Chen Chuqing, I will be exposed, and the benefits are not directly proportional to the risks.
She subconsciously wanted to refute Qin Feng, but as soon as she opened her mouth, she found that she could not refute.However, seven years ago, Fan Zhenhai may have drifted away.
Chu Tiankuo on the other end smiled lightly Obviously, that Martial Alliance genius is looking down on you.Liang. How dare we Are you going to hit someone Liang Jing looked at him lukewarmly What, are you questioning me As soon as he finished speaking, the strong man just slapped Qin Chuan in the face again, hitting him hard.
Qin Shufang was dazzled by the enthusiasm of the family, and her face was full of smiles for a while Actually, Xiaofeng took the initiative to bring this up, and I feel very relieved.The main reason is that he has not met a comparable opponent.
She is also the daughter of the Yangguo Muyang Chamber of Commerce.Came with high expectations and left empty handed. Qin Feng walked out of Splashing Star Hall without even taking a bullet with him.
She was raised rich and surrounded by young men from good family backgrounds.She turned around and left without hesitation Let s go In one sentence, she took several Yang Kingdom warriors with her and prepared to leave.
Her two white arms directly hugged Qin Feng s neck.Haha, if you don t use weapons, I won t use them either.
Now that he has met an old friend and is sitting at the same table with his friends, does Mr.Of course, what makes people feel even more sad is that there are tens of thousands of tombstones in Qinglongshan Cemetery, but more than half of them are just burial tombs.
Zeng Ke, who was next to him, was unhappy Beina, what are you doing Beina took her hand I don t mean anything else, but don t misunderstand me.There was already a stench coming from his lower body, and yellow and white things were mixed together, staining the expensive suit.
Ye Linyuan watched coldly from behind, as if he had expected this outcome Mr.Chen Chuqing is also a strange woman. Not only can she resist the Song family, but she also wants to develop Qinghai into Longdu.
Everyone was startled, completely frightened by the boldness of these people.This is not discrimination, but doing things according to the rules.
A group of rough guys standing next to him were also puffing smoke, spitting the smoke right in Su Peipei s face, all smiling playfully, completely ignoring Su Peipei and the others.Qin Feng reluctantly followed her into the car. What she was thinking was basically written on her face, but she still had to make excuses, which was inexplicably cute
Sure enough, Dai Ruolan revealed her true purpose as soon as she got in the car Finally I have a chance to come out.
After all, Lin Wan er used to be very jealous. Even if he glanced at another girl on the street, it would cause a huge commotion Maximize Your Potential with Maximum Strength Performance CBD Gummies
when he turned around.However, Chen Chuqing did not answer him, and just smiled faintly He, his existence itself is a secret.
Among ordinary people, he would be considered tall and decent looking, but to say he was a warrior would be ridiculous.In the narrow box, the battle between the two sides became more and more anxious.
He is far behind compared to Mr. Xu If I were him, I would feel so inferior that I would find a crack in the ground to crawl in
During the discussion, Mr. Bai also looked this way.What the Martial Alliance wants to do is to completely replace Panlong Palace and gradually include secular martial arts.
But they will also be subject to the control of the court.Su Ye understood instantly, isn t it just a character creation Liang Long sighed My life will be like this from now on.
The clerk smiled and emphasized again This thing is a treasure of the store and is not for sale.The female skeleton said They don t want to come back, it s amazing Just recruit a new group of people.
Su Ye was really not fooling around. This is an interesting story about the Great Yuan Dynasty.Sure enough, more than ten years later, he built Yunyi City, but it was a pity that it was gone.
I hope. Is there any problem between the second prince and the fourth prince The second prince is very knowledgeable, but his cultivation is not good, or to be more direct, he has no cultivation because he fell into the water when he was young and has been unable to practice.As the woman Combining Sertraline and CBD Gummies: Benefits, Interactions, and User Experiences
spoke, she bent down and took out several trays from below, which contained various kinds of food.
He didn t believe it. Could Su Ye still be able to defend against all attacks Then
The moment the attack came within three feet, the Yin energy surrounding Su Ye began to swim again, like two big purple snakes, surrounding Su Ye s body and blocking those attacks again.Su Ye asked doubtfully What does that mean No matter what, find a way to meet Diplodocus first, and then think about the 4 Healthy Lifestyle Changes from Kelly Osbourne Weight Loss Journey
rest.
The Xuanyin Taiyi True Fruit was really a good thing.Three months is worth two or three years Is it said that cultivating the elixir is difficult Did you say this was an experiment and a challenge Su Ye scratched his head, not sure why.
Su. I ve already settled this matter for you. I guarantee that no one will harass Experience a Slimmer Winter with Healthy Ground Beef Recipes to Lose Weight
Mr. Su because of the spirit crystals again.Today s elixir will wait a hundred years, tomorrow s elixir will wait a hundred years, and the day after tomorrow will be another elixir.
This time, Su Ye directly released the Taiyin energy from his body, threw it into the warehouse , and then switched to the trumpet.In this How Did Kelly Clarkson Lose Her Weight? The Secret Behind the Pop Star’s Stunning Transformation
way, although the power is only at the peak level of the Nine Realms of the Foundation Establishment Stage, the sword intent contained in it is the sword intent possessed by Zhou Dynasty, the cultivator of the Spiritual Stage The next moment, Su Ye pressed his fingers together to form sword fingers.
out. Everyone around him immediately turned their attention to Su Ye.If the spiritual energy flowed normally and circulated around the sky, Su Ye could do it twice as fast as others.
Moreover, with the name of the Taiyin Secret Realm, it seems that the style has suddenly gone up, and the price has also been rising.Feeling the pain coming from his back, the Night Rakshasa couldn t help but change his expression.
Bad news I don t know if it s because of the differences in the world, or if Su Ye s spiritual speaking technique is not proficient enough.No one likes them, it is just profitable. They don t have to worry about human relationships or the face of others.
Go to Zhang Tongbang and tell him that I want information about the strange fires in the world.Besides, my father is an upright official and it is impossible for him to Pure Kans CBD Gummies: Benefits, Reviews, and Where to Buy
accept your offer.
However, the saying that good fortune and misfortune depend on each other sometimes still makes sense.After all, the popularity of the Double Ninth Poetry Festival is still there.
There are many human monks taking advantage of the chaos to kidnap people.The two of them were dressed the same, with the Fulong Sect s token hanging around their waists.
Xie Jingshan suddenly remembered that Yun Shang had chosen a concubine for Jixiang.Now The Benefits and Uses of La Canna CBD Gummies
Dongqiao Zhenzun is looking for Jiang Yuebai, which is Dongfang Yu s best opportunity.
The last time she entered this place was when she was thrown into the Heaven and Earth Universe Mirror by the Supreme Elder before building the foundation.Leave. Okay, even if someone has the ability to find the energy of chaos, but do you know that to get in here, you need the essence and blood of Nine Dragons.
Lord Jiuchuan was attacked by the Blood Demon in his Dantian when he was trying to save Shen Huaixi.So I was thinking that if the monk s soul left the body, nothing would happen if he returned within forty nine days.
Are we in
the reflection Lu Nanzhi looked around carefully and found that this place was still a little different from the previous place.Lu Nazhi comforted Jiang Yuebai. Jiang Yuebai smiled and said, How can I be discouraged I am full of fighting spirit What are you two talking about outside Xie Jingshan stood at the door of the house with a pot of tea, Today Yi Zhengyang asked someone to The spiritual tea that was delivered tastes better The Benefits of Cannabis Gummies for Sex: A Comprehensive Guide (YaNfd)
than the fine spiritual tea from our spiritual world.
Tang Weimian was suddenly depressed. She was really shocked when she saw True Lord Jiuchuan come back that day with Jiang Yuebai who had successfully formed a pill.So it turns out that you were the one who fought hard to send away that day.
Especially after his grandfather became a god and ascended, his parents still had several years to go before they had a baby.He opposed it openly but did not stop it secretly. The changes in the Iron Feather Kingdom were like a spark, and other foreign countries were also ready to take action.
Jiang Yuebai nodded, and didn t ask who wanted to see her.As soon as he finished speaking, all Yuanying increased their spiritual energy output again and forced Prevent stone pillars from collapsing.
Por Martín Gómez | Blogspot Facebook.