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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Who knew you were there What kind of ghosts are mixed in If you don t give me an explanation today, you won t be able to get into the ring Before Ye Ling could answer, Siko Tingyan, who was on the left side of the ring, shouted loudly Why Mu Han obviously won, You old man is making things difficult in every possible way This is the arena for selecting the sea vanguard army.
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was another sound of the giant lizard spitting out a message, and before Baihua Nu and Zhilan could resist the swords and shadows, a bolt of lightning pierced the air As if carrying the aura of destroying the world, the thunder roared, shocking people, and immediately cut off the giant lizard s long tongue Baihua Nu and Zhi Lan quickly turned around and saw captain Ye Ling holding a thunder bow and firing the evil thunder arrow.
The Wufeng Sect he took over was located in a wasteland.He raised his eyebrows and said Isn t it The spiritual grass and spiritual trees here are affected by the spiritual energy of the mountain.
The more she looked at Ye Ling, the more she found it pleasing to her eyes.He was seriously injured and sank into the sea. But the crazy Drunken Immortal was hit head on by the green and black fish demon How can his old body compete with the demon body He was directly knocked out and became the target of the Golden Crow Clan Leader.
Even the ancestors of any of the nine immortal sects may not be able to obtain so many spiritual stones Very good You and Qingwan ride on the Red Fire Green Tailed Leopard, return to Laiyang City, summon all the Huixing THC CBD Gummies Guide: Benefits, Selection, and User Experiences
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We just need to build defensive barriers and let the spirit beasts carry the rocks.Seeing that he had killed the last person, this demon s figure, not to mention his body skills It was agile, but it could not withstand the pursuit of so many spirit beasts and foundation building experts, so it could only flee in panic.
No one knows about this except the big guys, so I m not worried about most of the Tian Chan troops coming to investigate.He screamed Blue and black brother Mr. Leopard and you are sworn in But the green black fish demon quickly picked up the fallen formation stone, like After obtaining the treasure, he turned around and said calmly Hold on The formation stone that the Lord values is here What do you want Do you still want to rebel against the Lord Come on, fight me Facing the blue and black fish monster The provocative and angry red fire green tailed leopard wanted to eat it alive But when the Red Fire Green Tailed Leopard saw the formation stones and heard the word Lord, he couldn t help but shudder Subconsciously, he glanced back at the location of the evil star master, which made his hair stand on end He quickly stood up in a half squat, with a flattering look on his face.
Said Look These people have gone to the valley, and some of them have come out safe and sound.The tide of beasts came suddenly and fiercely tonight.
There was really no reason for them to believe him.He wants to divert the attention of our police to classmate Lin Beichen to investigate him and achieve the purpose of revenge Sun Chao and the other four were on the verge of tears.
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It only takes more than ten minutes to walk from their school to Teito Aerospace University.Who would pretend to be a security agent in front of a fire Obviously
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The thick clouds that quickly accumulated from the thin ones seemed to have reached the top of the mountain.The body is stronger than ordinary people, but the strength is limited.
Where is the light coming from behind the tree The moment the thought emerged, the blue white electric light was infinitely magnified in front of Eric s eyes.He stopped pretending, jumped up from the stool, and danced with body language.
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Lin Beichen looked at his palm. Those tiny arcs appeared again Everything went so smoothly Lin Beichen What s going on Why are there no disorders between these two forces this time He originally thought that the visualization of Shantingshan s failure was not completely correct, and he thought that maybe it was different from the fantasy of illusion becoming true at the time of enlightenment, or maybe there were other possibilities.
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What was playing on the computer screen was the surveillance video of the specialty supermarket.At this time, Zheng Xia thought of something and quickly opened the weather APP These places are spread Finding Relief with CBD Gummies 300mg for Pain: A Comprehensive Guide
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Where is this kid Every time I ask for leave, there is always shocking news, and it gets bigger every time.Every step you take carries great risks. There s always burning wood falling down and all sorts of random stuff.
He hung up the phone. A thread in my mind became clearer and clearer.Why couldn t I appear behind Li Qiang Mr. Zhang was in the early hours of the morning.
During the chat, many of the classmates Sister Hong mentioned were very famous actors and singers in this era.International brands Obon integrated ceiling International brand endorsement Li Bin was stunned.
Gu Jiangyan looked at Zhang Sheng. This young man is not tall and his appearance is not outstanding, but his eyes reveal a radiance.In the close up in front of the camera, Du Hui was in great pain, without any trace of acting.
This is the director of the police station, named Jiang Yong, who has just returned from a meeting outside the station.The company s turmoil did not affect her. Instead, she was promoted and became the general manager of artist brand services and part of the film business, a branch under Mr.
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It was really funny How much creative talent do you have Who do you think you can compete with I, your question is very strange.You get it for him
That program invited Ma Yunhua from Taozhu. com and Li Zongyao from Hongtian Group , who are famous in the Chinese entrepreneurial circle In the past, not many people thought that they were Internet giants.
Seeing Avery. After Tashi nodded, Zhang Sheng smiled, then looked at Bi Feiyu Director Bi Huh Bi Feiyu looked at Zhang Sheng calling him coldly, was startled, and then walked over.His family beat gongs and drums, and he is still so outstanding.
But after all, it was her first time opening a store and she had little experience.Even if there are professional designers from Yanjing facing it together, it is extremely painful to build word of mouth.
Apart from showing every day, he was not idle, but spent a lot of money to buy tickets for Paging 1988 from these public judges He plans to Kradle CBD Chews for Dogs Reviews: A Comprehensive Guide to Calming and Relaxation Support (LdVuv)
use money to find the best supporting actor But this excitement gradually turned into confusion in another movie.Okay, you, Jiang Xiaoyou, are halfway through talking.
Two minutes ago Sister, pry for a minute It s rare that the old time Run has a lot of talent behind it.Ah K was very excited. And the voice became more and more excited, which shocked the surrounding staff.
It s been several days. I don t know if the ships on the Hundred Yuan Sea have docked
The Sea of 100 Yuan, Weiyuan No. Su Ye appeared in the cabin, then sneaked onto the deck, and quickly blended into the group of sailors who were working.there are very few practitioners who regard it as their The Benefits and Effects of Pure Kanna CBD Gummies: A Comprehensive Review (CItPq)
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Emperor Yang, the sun rises in the east, I give you a spiritual talisman to sweep away the bad luck Su Ye took out two hidden talismans, stuck one on himself and one on Huahu, and then carried Huahu over the wall Enter.Su Ye wasn t too worried about the entrance exam. Although the entrance examination of Find Serenity with Renew Calm CBD Gummies on Amazon: A Comprehensive Review
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Moreover, Su Ye deliberately kept a low profile, just listening and not speaking, so naturally he would not attract anyone s attention.This skill seems to have average destructive power, but the damage is obviously very huge.
Su Ye glanced at the drowned ghost and asked curiously, Do you know that woman That woman is the ghost king Rakshasa Ah It s not from this generation.The word spirit that follows my daughter is called the word spirit that comes true.
Liang Ming said solemnly Senior Lu, there was an accident in the entrance exam.What happened Someone picked off your head halfway.
Even if there are students from the Egret Academy, many of them blend into the crowd
The students from the other three colleges were quite impressive, and many of them would cast their eyes in Su Ye s direction.No, this is not officialdom. Su Yexiao He said This is the human world.
Compared with ordinary talisman paper, it is full of richer spiritual energy and can naturally exert greater power.However, the city has been closed for several days.
Therefore, I think it is just us being suspicious. There is nothing wrong with that woman, 2025’s Hottest Weight Loss Trend: Does Apple Vinegar Help Lose Weight?
and she may not even be Yun Yi.Although it is common, the elixir making rate is high, and Su Ye is also an expert at refining it.
Did you find anything Luo Qingqing shook her head and said, I searched for a long time but couldn t find Pozili.But what we all know is that when Yin Qi gathers in large amounts, the secret realm of Taiyin will appear, and there are many treasures in it, which people flock to.
Su Yezhen wanted to improve his cultivation by conquering demons, and there were thousands of demons and ghosts that needed to be killed.A crisp sword chant sounded, and then sword light surged around.
What are Lu Ke s magical powers and Taoist methods There are three types in total, namely Tian Thunder Sky Break, Dragon Subduing Wood Style, and Heavenly Sword Dance.Su Ye secretly thought in his heart This ghost king is on the road.
Por Martín Gómez | Blogspot Facebook.