MUOS-4 – Atlas V 551 (AV-056) – Канаверал SLC-41 - 02.09.2015 10:18 UTC

[Старый]

G.K. пишет:

Старый пишет:
А главное - надо посмотреть яркость чтоб подтвердить или опровергнуть теолрию что на Менторах антенны как на Муосах.
Заодно будет разгадана загадка высокой яркости Менторов. И её изотропности.

Не поможет. Менторы уникально яркие. Если бы это было только из-за антенн та же Турайя с её лопухами была то же очень яркой.
А на деле...
 
Взято из Вики , как не странно.

У Турайи не харрисовская антена. Нужно Гаруду.

[Старый]

Почувствуйте разницу:

[Старый]

Где ярче?

[G.K.]

Старый пишет:
Где ярче?

Это два рендера. Без данных  о площади антенны и коэффициенте отражения нельзя сказать.

[Старый]

G.K. пишет:

Старый пишет:
Где ярче?

Это два рендера. Без данных о площади антенны и коэффициенте отражения нельзя сказать.

На всех картинках харрисовские антенны яркие а Астромеш - прозрачная. И даже на телесъёмке. 
Однако чего гадать? Надо яркость хоть одного спутника с Харрисом. А нету. 

[ОАЯ]

Старый пишет:
Почувствуйте разницу:

Разве не так?

Thuraya частоты 1634-1635 МГц, 1650-1656 МГц, 1532.5-1533.5 МГц, 1548.5-1554.5 МГц Антенна может быть не сплошной, отражатели расположены редко с большим просветом между собой. Можно 10...15 см.

Garuda частоты 6425-6725 МГц,   3400-3700 МГц, 1626.5-1559 МГц . Здесь максимальная частота 6500 МГц. Т.е. длина волны 300/f. Сетка не реже 5 мм. Почти сплошное полотно. Отсюда и ярче.

[Старый]

Везде на всех частотах антенны Харриса яркие а Астромеш - прозрачные.  Просто разные фирмы - разные конструкции. 
Однако чего гадать? Надо просто посмотреть яркость спутников. А нету. 

[Старый]

Кстати, я так думаю что частоты для связи с телефонами на которых работают большие антенны и у Турайи и у Гаруды одинаковы.

[G.K.]

Старый пишет:
Везде на всех частотах антенны Харриса яркие а Астромеш - прозрачные. Просто разные фирмы - разные конструкции.
Однако чего гадать? Надо просто посмотреть яркость спутников. А нету.

Скинь список в ЛС. Пора передавать привет TAU. А заодно и специалистам по паранормальным явлениям. Милая там компания собралась.

[ОАЯ]

Старый пишет:
Кстати, я так думаю что частоты для связи с телефонами на которых работают большие антенны и у Турайи и у Гаруды одинаковы.

А частоты для других полезных дел? Рефлекторы же могут быть общими.

[Salo]

http://spaceflightnow.com/2015/08/24/photos-navy-satellite-joins-rocket-booster-for-launch/

Photos: Navy satellite joins Atlas booster rocket for launch       
Posted on August 24, 2015 by Justin Ray
          
This photo gallery shows the U.S. Navy's fourth Mobile User Objective System communications satellite, already encapsulated in the 18-foot-diameter nose cone, being lifted atop the United Launch Alliance Atlas-Centaur rocket Wednesday, Aug. 19 at the Vertical Integration Facility. Launch is planned for Aug. 31 during a window of 6:07 to 6:51 a.m. EDT.
Photo credit: United Launch Alliance
See earlier MUOS 4 coverage.
Our Atlas archive.

[Старый]

ОАЯ:
А частоты для других полезных дел? Рефлекторы же могут быть общими.

Для других дел не нужен крупногабаритный рефлектор.

[ОАЯ]

Красивая картинка:
http://www.jammer.su/media/wysiwyg/radio-frequencies-in-russia.jpg

и таблица 
https://en.wikipedia.org/wiki/NATO_Joint_Civil/Military_Frequency_Agreement
И .pdf
http://stakeholders.ofcom.org.uk/binaries/spectrum/spectrum-information/UKFAT_2013.pdf


На более высоких частотах труднее получить большую мощность в небольшом объеме. Следовательно, для того, чтобы принять сигнал малой мощности нужен рефлектор или несколько простых антенн (ФАР).

[Salo]

http://www.ulalaunch.com/ula-and-the-us-air-force-work-together-ovi.aspx

United Launch Alliance and the U.S. Air Force Work Together to Improve Launch Processing and Enable Schedule Efficiencies

Cape Canaveral Air Force Station, Fla., (Aug.  25, 2015) – United Launch Alliance (ULA) and the U.S. Air Force have demonstrated a commitment to innovation and continuous improvement through implementation of Off-site Vertical Integration (OVI) of several structural elements and the Centaur upper stage for the Atlas V launch vehicle. OVI significantly reduces the number of lifting operations performed at the Vertical Integration Facility (VIF) at Cape Canaveral, taking them off the critical path and allowing for reduced time between launches. Relocating these operations to the Delta Operations Center (DOC), an indoor facility, also mitigates risk of weather-related processing delays.

"We are very pleased to have successfully completed the first Off-site Vertical Integration for the upcoming Mobile User Objective System launch. With OVI, the team developed an innovative process that provides safer and more efficient launch processing of the Atlas vehicle." said Jim Sponnick, ULA vice president, Atlas and Delta Programs. "The associated one-week reduction in the launch-to-launch processing spans enables us to better meet the launch needs of our customers."

For a 500-series Atlas V rocket like the one launching the MUOS-4 mission, the OVI process accomplishes the integration of six structural elements along with the Centaur upper stage inside a test cell in the DOC, rather than conducting major portions of these complex hardware lifting and mating tasks outside at the VIF. Moving these operations inside provides a safer working environment for employees and mitigates weather impacts to launch schedules. In the last six years, there were 25 days of weather delays to launch vehicle stacking operations at the VIF.   

One of the innovations required to enable OVI was the development of a transporter to safely move the five-story stack of rocket hardware approximately six miles from the DOC to the VIF. The transporter includes a tank pressure control system for the Centaur upper stage.  

"The Off-site Vertical Integration process, including ground support equipment designs and operational procedures, were developed in collaboration with our Air Force customer to support launch manifest needs and enable continuous improvement to these critical launch operations," said Sponnick.

"The Air Force is pleased to partner with ULA to find and implement efficiencies. We are fully onboard with efforts to implement continuous process improvement, a key tenant of Better Buying Power 3.0," said Lt. Gen. Sam Greaves, commander, Space and Missile Systems Center.

ULA's next launch is the MUOS-4 mission for the U.S. Air Force and the U.S. Navy, scheduled to launch Aug. 31 aboard an Atlas V from Space Launch Complex-41 from Cape Canaveral Air Force Station, Florida.

The Evolved Expendable Launch Vehicle (EELV) program was established by the United States Air Force to provide assured access to space for Department of Defense and other government payloads. The commercially developed EELV program supports the full range of government mission requirements while delivering on schedule and providing significant cost savings over the heritage launch systems.

With more than a century of combined heritage, United Launch Alliance is the nation's most experienced and reliable launch service provider. ULA has successfully delivered more than 95 satellites to orbit that provide critical capabilities for troops in the field, aid meteorologists in tracking severe weather, enable personal device-based GPS navigation, and unlock the mysteries of our solar system.

For more information on ULA, visit the ULA website at www.ulalaunch.com, or call the ULA Launch Hotline at 1-877-ULA-4321 (852-4321). Join the conversation at www.facebook.com/ulalaunch, twitter.com/ulalaunch and instagram.com/ulalaunch.

[che wi]

30% по прогнозу на благоприятные погодные условия в день пуска. С ухудшением до 10% во вторник.

http://www.patrick.af.mil/shared/media/document/AFD-070716-027.pdf

[Salo]

http://spaceflightnow.com/2015/08/29/tropical-weather-postpones-mondays-atlas-5-rocket-launch/

Tropical weather postpones Monday's Atlas 5 rocket launch       
Posted on August 29, 2015 by Justin Ray     

The Atlas 5 rocket will remain inside assembly building for now. Credit: ULA
 
CAPE CANAVERAL — Plans to launch a Navy communications satellite aboard an Atlas 5 rocket early Monday have been interrupted by Tropical Storm Erika, an unpredictable cyclone with its sights on Florida.
"We've been Erika'ed," United Launch Alliance CEO Tory Bruno tweeted.
Officials made the decision Friday night to postpone the scheduled Saturday rollout of the rocket from its assembly building to the launch pad at Cape Canaveral's Complex 41, choosing instead to leave the 206-foot-tall booster in the safe confines of the hangar for now.
That, in turn, has delayed the Monday liftoff attempt until the storm passes.
"The launch of a United Launch Alliance Atlas 5 rocket carrying the MUOS 4 mission has been postponed to due uncertainty in the weather conditions associated with Tropical Storm Erika," officials said in announcing the delay.
If the rocket was fueled during the countdown for a Monday launch attempt, it would take 24 hours before a rollback to shelter could occur.
Complex 41 is an open-air. clean-pad facility without a protective service gantry, meaning the rocket would have to sit exposed to whatever weather Erika threw at it.
Launch is re-targeted for no earlier than Wednesday morning. The workload and the predawn launch time mean rollout happens roughly 44 hours before liftoff.
A Monday launch was timed to occur at 6:07 a.m. EDT. The launch opportunity moves four minutes earlier for each day it is delayed.
"If you are like me, you probably have a bookmark for the National Hurricane Center website and take a look at everything that's going on," Dr. Walt Lauderdale, MUOS 4 mission director from the Air Force's Space and Missile Systems Center, told reporters at a Friday afternoon news conference.
"The integrated team is following this very, very closely to make sure we don't make any decisions that could compromise the safety of our people or of the mission stack."
The United Launch Alliance rocket is carrying the Navy's fourth Mobile User Objective System mobile communications satellite. MUOS No. 4 will fill the last remaining gap to create global coverage for the military's new rugged smartphone system.

See earlier MUOS 4 coverage.

[Salo]

Не ранее 2 сентября в 12:59-13:43 ДМВ.

[Salo]

http://spaceflightnow.com/2015/08/31/atlas-5-rocket-travels-to-launch-pad-for-wednesday-flight/

Atlas 5 rocket travels to launch pad for Wednesday flight       
Posted on August 31, 2015 by Justin Ray    

CAPE CANAVERAL — Delivering two-and-a-half million pounds of ground-shaking thrust at takeoff, more than any rocket flying fr om Cape Canaveral these days, the mighty vehicle was rolled from its assembly building to the launch pad Monday for Wednesday's early morning blastoff.
The United Launch Alliance Atlas 5 rocket, equipped with five strap-on solid-propellant boosters for added performance, will launch the Navy's MUOS 4 mobile communications satellite at 5:59 a.m. EDT (0959 GMT). The available launch window extends to 6:43 a.m. EDT.
The booster was wheeled out aboard a mobile launcher platform, emerging from the hangar wh ere the rocket's two stages and the payload were integrated over the past few weeks.
The slow drive from the 30-story Vertical Integration Facility to the launch pad used a pair of specially-made "trackmobiles" to carry the rocket's 1.4-million pound launching platform along rail tracks for the 1,800-foot trip.
The 206-foot-tall rocket will launch the MUOS satellite into geosynchronous transfer orbit. Deployment of the payload occurs three hours into flight.
The rocket is flying the 551 vehicle configuration. The version features two stages, five solids and an 18-foot-diameter nose cone. It is powered off the launch pad by an RD AMROSS RD-180 main engine and Aerojet Rocketdyne solids. The Centaur upper stage has an Aerojet Rocketdyne RL10C-1 cryogenic engine.
Countdown clocks begin ticking Tuesday night, seven hours before launch, leading to activation of the rocket, final testing and system preps. Fueling will be underway by 4 a.m. EDT.
There is a 70 percent chance of acceptable weather for Wednesday's launch opportunity. Cumulus clouds will be the main concern.
"A tropical wave (formerly Tropical Storm Erika) is in the Eastern Gulf of Mexico with the trough extending into Central Florida with cloudy conditions. The tropical wave is expected to lift north over the next 24 hours with showers and isolated thunderstorms developing over Central Florida this afternoon," Air Force weather forecasters say.
"On launch day, the wave looks to be in the Northern Gulf of Mexico extending into North Florida with the greater shower threat to the north. Over Central Florida, there is a coastal shower threat during the count with thunderstorms developing after the count near the noon hour. The primary concern for launch is cumulus clouds."
The launch time outlook calls for scattered low- and high-level clouds, coastal showers, good visibility, southerly winds of 10-14 knots and a temperature of 80 degrees F.
See earlier MUOS 4 coverage.
Our Atlas archive.
Photo credit: United Launch Alliance










Photo credit: United Launch Alliance

[Pirat5]

что-то сайт глючит....    

0405 GMT
In today's first weather briefing to mission managers, all current conditions are observed GO for launch of the Atlas 5 rocket and odds for the launch window stand at 80 percent favorable.

[Pirat5]

0725 GMT
Weather conditions remain "GO" at the present time.

0744 GMT
T-minus 120 minutes and counting!
Clocks have one more built-in hold planned at T-minus 4 minutes. During that pause, the final "go" for launch will be given

0758 GMT
Filling of the Centaur upper stage with about 4,100 gallons of liquid oxygen has begun