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.
El cambio climático es uno de los mayores desafíos de nuestro tiempo, y requiere una respuesta colectiva y urgente. La modificación genética de plantas emerge como una opción atractiva y viable en la lucha contra el cambio climático, ofreciendo la posibilidad de aumentar la capacidad de captura de carbono de manera rentable y sostenible. A medida que la investigación avanza y se exploran nuevas tecnologías, es crucial mantener un enfoque integral y colaborativo para abordar este desafío global y proteger el futuro de nuestro planeta.
Este 2018, Panda Express y toda la comunidad china da la bienvenida al Año del Perro, un signo caracterizado por la armonía en la vida familiar, el patriotismo y la lealtad.
La inercia tecnológica es imparable, y la evolución industrial es una marea irresistible. No se quede rezagado; prepare sus instalaciones industriales para el futuro adoptando estas tecnologías más inteligentes, rápidas y respetuosas con el planeta. La inversión en estas innovaciones no solo impulsará la eficiencia, sino que también asegurará que su instalación esté a la vanguardia de la revolución industrial en curso.
La compañía mexicana de TI, Intelisis, diseña y realiza soluciones integrales enfocadas a distintas verticales, y la de educación es el ejemplo de tener todo integrado para dar un servicio de calidad internacional.
No, I m asking for my daughter. Doctor, please give me a prescription.Fang Ru Wu Luo Insurance Gong Fenwu Sang Ben Cocoon Shoulder Jieyuan Pani drives the tax workers to slip away and rushes the tax officials to lead The sputum workers are promoted to tax overseas Cocoon What Next to the cocoon, the picker The cocoon The mysterious scum in the shed is painted in a hurry.
As the saying goes, wealth can lead to gods. Although this method is primitive, it will always work.Do you remember that Ah Let s go to the venue, I can t get in, right Director Pi He turned around and left, but his voice stayed, So I asked you to find your colleagues in the News Department and use your brain.
But after everyone left, they saw the only young woman pulling the old man hard, and the old man pulled her hard in turn, forming a tug of war between the two.Lan Changhua s spirit continued to be depressed. The conclusions of Western medicine are the same.
Especially Jin Juan, who came from a public institution, and is already at a disadvantage in competitiveness compared to others if she is involved in a lawsuit, even if she does not lose her professional qualifications, I am afraid that no one will be able to do such a thing.Anyway, just saying thank you was enough. Then he scratched the child s nostrils with his hair, making the child feel uncomfortable and sneeze.
After speaking, he glanced at Zhang Dewen quietly and saw that he had no intention of stopping him, so he continued.What happened Our video was taken down. Why Du Heng was stunned for a moment.
Feng. It is normal for nurses to come to the ward more.By tonight, the itching should be stopped, and it will be completely gone in three days.
It didn t take long for Shen Changqing to stop in front of a loft.Seeing Du Heng thinking, Qiu Pingzhen suddenly asked, Dean, you should do this to promote the development of our hospital, but is this too hard for you But you are the dean, you Wouldn t it be unfavorable to the development of the hospital to go out in person Uh This question really stumped Du Heng, and he didn t know how to answer it for a while.
Dangerous bamboo shoots, mosquitoes and sweetness in the south Just Liang Dao is wrinkled and avoids the heat in the south.Du Heng nodded to express his understanding, I ll give you a phone number.
There are only thirteen people including me. But the thirteen of us will try our best to answer the question.The young doctor said sincerely, Not only were there various videos on the Internet at that time, but the celebrity named Feng Su also personally admitted the matter.
Although the effect of using aconite is much better than using ginseng alone.Let s go straight away. Okay. As soon as he finished speaking, he heard a sound of vomit coming from the back seat.
Introduce Sheng Lawu shed mystery cocoon especially point consumption Fan Xian, a stubborn boy, Tan Gong Fengxian Tiefeng rushes into the cocoon and digs out the lost work The staff is in a hurry to do the tax review.An undergraduate clinical TCM physician would not dare to talk about it, but a postgraduate clinical TCM physician would not know how to memorize it Although they may not be able to use it, their theoretical understanding is much more thorough than the current old god.
Du Heng felt a little fed up. It s no joke to return to the level of the child before.The old lady didn t look back and left, looking at the trembling body and her hands.
Du Heng hurried to the consulting room with a cold face and quickly caught up with the cart in front of him.Women who have had caesarean sections will like it very much.
The workers were bribed, and the workmanship of Chen Yao was suspected.My car is parked at the intersection. I will carry Brother Lihai over.
It can nourish yin and complement yang, and it can work together.When they see your paper tomorrow, they will come to you to deepen cooperation.
Listening to Du Heng s words, Director Zheng wanted to say something, Director, there is no conflict between promotion and making money.The relationship between the two was no longer a simple teacher student relationship, but an evolved one.
They can see you live to be thirty, and their mental endurance is hundreds of times stronger than yours.When he arrived at the hospital, Du Heng did not contact Lan Changhua first.
Go and do it right away. Mei Dong agreed and immediately looked at the young doctor behind him, Did you hear that Go and get ready.He prescribed some medicine and sent him home. By this morning, the lower sides of the child s ears were swollen and he had a low fever of 37.
Xu Yinluo, a prodigy who is a great judge of cases, got to know Xu Qi an with a nonchalant smile, maintaining a calm personality.I just feel that the monks are chanting scriptures, buzzing and noisy.
This trick can only be used once, with his wisdom, the second time will be difficult.I probably haven t seen her before, but her aura makes me feel like I ve seen her somewhere before, and I feel like I ve seen her before.
The angry personality really doesn t want to double cultivate with him.This novel feeling was both shameful and intoxicating, and she gradually obeyed the will of her heart and no longer resisted.
Qi Sha I also.There are thousands of Buddhist disciples, and those with great wisdom are a minority after all.The psychic master Irbu and Sun Xuanji, who is driving the fort, are still playing the game of cat and mouse.
Needs airflow, well, taking off from a height is itself airflow, It seems that Ying Jiang is a low level spirit beast Xu Qi an looked into the distance, and he heard a majestic cry.Xu Yuanhuai opened his mouth, wanting to say something, such as words to boost morale, such as don t bully the young and poor, such as I will be stronger than him in the future, but he didn t have the confidence to say it.
It is understood that Chai Jianyuan and Chai Xian hit each other, but both of them have six toes, which is very interesting.The cultivation of Qijue Gu was considered a success, and two pieces of soul calling clock artifact materials were collected, and now one piece of dragon s breath was successfully collected.
Xu Qi an said slowly There are a few things I want to ask the little girl.The master of Shuangdaomen didn t speak, but Yuan Yi turned to look at Xu Qian.
Who else is it not you Chai Xian was furious and lost control of his emotions You still have accomplices, you still have accomplices.Mu Nanzhi sat on the horse s back, her waist swaying slightly with the bumps.
Thank you for telling me.I already understand what happened.Staring at Xu Qian, the voice was slightly sharp You, who are you ps Push a friend s book My filial piety has gone bad.
He sat in front of the grave and recited scriptures for salvation.The national teacher can just help strengthen the seal.
You.Teacher, I m Rong er.Nalan Tianlu was silent for a moment, and said as if sleepwalking So.Ji Xuan laughed when he heard the words Master Daoist, I m just waiting for you to speak.
I kill people who deserve to be killed.Can there be rape and robbery Disdain for it.The next moment, the injury on Arhat s chest recovered.
Ji Xuan, Xu Yuanhuai, Bai Hu, and Liu Hongmian, these martial arts practitioners had complicated emotions in their hearts.If killing is allowed, we are finished.While he was speaking, the dream returned to normal.
Over the star observatory, layers of white clouds instantly collapsed.PS The typo was changed first and then changed Bastard The disciple of Donghai Dragon Palace was furious, grabbed Li Lingsu by the neck, and was about to beat him.
If I don t love you, how can I double cultivate with you.Therefore, Chai Xing er is the biggest beneficiary and has sufficient motives to kill.
There are many types.If I had a teleportation magic weapon that day, I wouldn t be so embarrassed by King Kong.He didn t even have the idea of running away or dodging, only the thought of waiting for death in his heart.
Interestingly, the gambling shop owner happened to be infected with homicide.Hugging left and right is also worthy of talking about love Well, Xu Qiding still shook his head even more when he was asked to say The point is not that you will not be able to realize your death, and the point is that they may not want to kill you, but they will definitely vent their anger on you.
Luo Yuheng stood on the top of the pagoda, his robes fluttering, his fairy posture was outstanding.The middle aged man covered his hands Neck, staggered and ran out of the house, fell to the ground within a few steps, struggled frantically with his hands and feet, and then became silent.
Any gaze that contains hostility or malice will make the other party feel emotionally.Before Li Lingsu finished speaking, Chai Xing er interrupted, and said coldly I m tired.
The concubine held her tightly in her arms She glanced at the little woman and quietly stuffed that beautiful padded jacket back into the package.I created a WeChat public account to distribute year end benefits to everyone You can go and see Everyone in the Peerless Divine Soldier was slightly moved, but they couldn t control the greed, passion, longing and jealousy in their eyes.
Come out, this is the second floor.The disciple of the East China Sea Dragon Palace said in surprise.Zhenfu General Li Shaoyun, carrying a spear, said excitedly Master Yuan, let s go in.
Ding Ji Xuan brandished the Moon Shadow Sword and flew the Peace Saber, Liu Hongmian, Jing Yuan and others rushed to protect the white tiger.The longer the dragon qi is scattered outside, the more chaotic the Dafeng will be.
In Anshen Temple, Emperor Yongxing, who had just had dinner, heard a lion s roar resembling Jiao Lei s explosion from a distance, and the sound was distorted when it reached the palace.The fourth rank ascetic monk, like the ninth rank novice monk, belongs to the front rank, and does not have a combat power bonus.
Then he looked at Xu Lingyin Don t force it.Xu Lingyin finally finished eating a handful of candied fruit in his hand, licked his palm, and walked towards the stone table in the eyes of everyone.A conch inscribed with a curse fell to the table with a slap.
Yes Xu Qi an nodded So I came here to confirm, but found that they were silenced Hiss.With the arrogant posture of rushing down together, it instantly pierces through the Du meridian and gushes out.
Huaiqing nodded with a serious face, looked at Xu Qi an, and said During the time you were away from overseas, the Buddhist sect held a Dharma conference.Besides, although I am young, I have already transformed into a god.
On both sides of the square table are Lina with slightly curly hair, light blue eyes and fair skin, Longtu s daughter.There seems to be some kind of restriction on the mountain, no one is allowed to fly here.
He asked again Is the person who pulled you away just now with her Are you talking about Ah Heng No, Ah Heng has a very bad relationship with her.Sister Miaozhen Seeing Li Miaozhen coming, the little girl stood up happily, but the boy pouted without raising his head.
Meng Jingzhe did not hesitate, and followed behind it.The giant panda took a hard bite of the bamboo, imagining that he was biting some incomprehensible idiot.
Come with me.The girl said with a smile. Meng Jingzhe followed behind her.After only taking two steps, Meng Jingzhe felt that something was wrong.The evil god approached with a blow, but turned around in a very short time.
You probably don t remember what the military script says.The other one is more than one foot tall and looks like a moth.
Come here, anyone who sees it can improve their cultivation base.The shadow under Gu God s body surged and flowed, but nothing happened.
After a while, he walked out wearing a long skirt, and the green feathers on his body disappeared.They are obviously very ordinary, but they are so confident.
He didn t dodge, but Tianjie perfectly avoided the half step martial god.If you kill other greedy people, I m afraid it won t be long before you, who are hiding in the shrine, will be able to return to the world.
Life is better than death, but he looks full of vitality.Here Inside and outside the hall, all civil and military officials knelt down in unison, and the voices came and went Long live, long live, long live, Your Majesty The most powerful and huge dynasty was born.
I used to admire his poetic talent, his talent, and his reputation, but after today , I have a deep fear of him, even fear.Sure enough, it worked wonders.Huh, here comes a group of little mice.
In the afternoon, I went to the bar with Song Tingfeng, Zhu Guangxiao and Brother Chun to listen to the music.The reason for all this treatment is not because she is a woman, but because she is a god race, the most noble race today.
The young man stretched out his hand, and those phantom beasts disappeared immediately.She didn t expect Xu Qi an to plot herself in this way.
Seeing Meng Jingzhe s expression on his face, Qishan Immortal has Take out the medicine.One drop is not enough.Meng Jingzhe began to force out the second drop.
Of course, this is a matter of the future.Here is another py transaction.No matter how deep it is, there is no great danger.
The room was clean and tidy, but it was not spacious.Huaiqing s voice was clear and sonorous I am the king of Dafeng.
Moreover, this black smoke expanded without limit, as if it wanted to completely replace the sky.After everyone left, Meng Jingzhe quietly walked out of the hall.
It was originally a piece of scorched earth.Over the years, it was planted by Meng Jingzhe himself, and it has the appearance of red flowers, willows and green all the way.If they rushed forward, they would surely die.The colored glaze Bodhisattva raised his foot and stepped lightly, and the colorless glazed field expanded instantly, covering not the Dafeng Chaofan, but the path leading to the Shenshu and Buddha battlefields, which could effectively block Li Miaozhen and others from casting spells through the air.
There is an achievement.I have been writing a book for so long, and I haven t gotten it yet This achievement.Xu Nian returned to the mansion at noon, and came back alone, and the servant who sent the message was left behind by him.
Another flirtatious and sentimental oiran threw it winking.Xu Qi an sat down bravely, holding a teacup, and took a sip of the best quality green tea in the dental store.
Dafengjing City is located in the Central Plains, far away from the coast.Xu Qi an replied.That s right, there are Kanyutu stations.
He chose to communicate frankly and openly with the old Taoist priest because he took a fancy to the other party s wisdom and rich experience.The Yasheng Academy is still banned, and no one is allowed to enter.
Thinking of this, Xu Qi an immediately summoned all the watchmen in the station and told them his guess.Kill Zhou Min, look for hidden evidence, and try to blame Yang Chuannan.
All the bad things about avi made the two of them run into each other.After dark, they came to the haunted house, and the two climbed over the wall to enter.
He asked someone to engrave three small characters on the left side of Xu Qi an s name Shi Yang Gong.The soldiers who were dozing off against the parapet woke up one after another, grabbed the spears, crossbows, shields and other weapons around them, and entered the combat state.
She was so unstable that she bumped her head against her aunt s buttocks.Immediately afterwards, the wave of the explosion of the air machine swayed, and the screams continued one after another, and soon fell into dead silence.
Not the original boss.A guess in Xu Qi an s heart was confirmed, Where s the original boss When did the lame new boss take over the shop Shop No.If there is such a place in the inner city, it will be sooner.
I hope you can handle this matter carefully.General Li is too famous, I am just a little copper Gong.I just want to try it.Xu Qi an shrugged Obviously, the magic spell of catching monsters in my hometown is not reliable.
The Huakui lady had a sullen face, her beautiful eyes shone sharply, and the moment she entered the room, her brows and eyes became gentle without any sign, and she said pitifully I heard that Xu Lang came to teach Fangsi, I also want to join in the fun and serve with Miss Mingyan.The shop owner I met later was Liang Youping in disguise.
Zhu Guangxiao added, not without bragging We are watchdogs.Then what Song Tingfeng s voice trembled a little Even if the governor is killed, aren t they afraid that the imperial court will send troops to encircle and suppress them The Qi Party and the Witch God Cult have been plotting for so many years, isn t that the idea behind it Xu Qi an looked at him, If it s not for the sake of rebellion, why are they doing so many messy things.
Xu Qi an didn t answer, but left the room and knocked on the door of a Yinluo next door.15.However, people in the black market are indifferent, and no one takes it seriously.
Li Miaozhen spoke out Yang Chuannan s plan frankly.The crimson official robe symbolized his identity, and no one dared to stop him.
Later, she served a guest named Tamraha, was appreciated by him, and became his best friend.Zhang Yi Zhang here Zhang Feng sent someone to invite him.
very good.There are many bad people in the world.Zhu Guangxiao finished speaking in a muffled voice and sighed.She was never oppressed by the wicked mother in law.
Xu Qi an picked up his teacup, took a sip, shook his head and said, General Li, what you say is groundless.Song Tingfeng agreed with his statement.Then came the second set of codes three hundred, four, seven, four, one, two.
This small jade mirror was found from the bottom of the well, and it belonged to Hengyuan s No.Now, just wait for the outcome of the case.S There is another chapter tonight.
This little girl from the Power Gu Department is really interesting.None of the relatives within the Pingyuanbo clan could escape Lose.
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