NROL-76 – Falcon 9 – Кеннеди LC-39A – 01.05.2017 11:15 UTC

Автор Salo, 17.03.2017 09:19:15

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Прол

#440
Цитироватьвлад краев пишет:
MARS Kineto Tracking Mounts увидишь чем снимают. (ну или по крайней мере очень схожее)
Схожее российское:
http://www.npk-spp.ru/deyatelnost/dlya-poligonov/136-sagen-ta.html
http://www.npk-spp.ru/deyatelnost/adaptivnaya-optika.html

ВВК

ЦитироватьПрол пишет:
Схожее российское:
 http://www.npk-spp.ru/deyatelnost/dlya-poligonov/136-sagen-ta.html
 http://www.npk-spp.ru/deyatelnost/adaptivnaya-optika.html
Только почему-то при пусках возможности этой техники не наблюдается

tnt22

https://spaceflightnow.com/2017/05/04/photos-spacex-kicks-off-the-week-with-falcon-9-launch-and-landing/
ЦитироватьPhotos: SpaceX kicks off the week with Falcon 9 launch and landing
 May 4, 2017 Stephen Clark
 
SpaceX started the week with the launch of a Falcon 9 rocket from NASA's Kennedy Space Center in Florida just after sunrise Monday, delivering a classified U.S. government spy satellite to orbit as the booster's first stage returned to Cape Canaveral for a vertical landing.

The nine-minute flight from launch to landing produced stunning imagery, showing the Falcon 9 soaring into the sky from pad 39A at 7:15 a.m. EDT (1115 GMT) Monday on top of 1.7 million pounds of thrust from its nine Merlin 1D engines.
Спойлер
Three of the Merlin main engines reignited after the Falcon 9's first stage let go from the second stage around two-and-a-half minutes after liftoff, beginning maneuvers to boost back toward the Florida coastline. Three engines fired again for an entry burn to slow down the descent, then the center engine on the first stage ignited for a final burn as the rocket's four landing legs extended for touchdown at Landing Zone 1.

Read our full story for details on Monday's mission.


Credit: SpaceX


Credit: SpaceX


Credit: SpaceX


Credit: SpaceX


Credit: SpaceX


Credit: SpaceX


Credit: Stephen Clark/Spaceflight Now


Credit: Stephen Clark/Spaceflight Now


Credit: Stephen Clark/Spaceflight Now


Credit: Stephen Clark/Spaceflight Now


Credit: SpaceX


Credit: Ken Kremer/kenkremer.com


Credit: Ken Kremer/kenkremer.com


Credit: Ken Kremer/kenkremer.com


Credit: SpaceX


Credit: SpaceX
[свернуть]

Apollo13

https://www.nasaspaceflight.com/2017/05/falcon-9-static-fire-1-inmarsat5f4/

ЦитироватьAfter SES-10, a two week delayed due to the NRO's secretive payload precluded SpaceX from repeating its rapid turnaround efforts with the NROL-76 mission, though it is understood and documented in L2 that Pad-A and the TEL (Transporter/Erector/Launcher) were ready to support the NRO launch in its original mid-April slot.

Lanista

А господин Молчан КА не нашел случаем?

Штуцер

Но в виде обломков различных ракет
Останутся наши следы!

tnt22

ЦитироватьLanista пишет:
А господин Молчан КА не нашел случаем?
USA276 2017-05-01 вроде был наблюдаем (Cees Bassa) над Европой (#426)... Пока других сообщений на satobs.org нет.

trrr

Круговая орбита, наклонение 50, высота ок. 400.

Lanista


tnt22

Цитироватьtrrr пишет:
Круговая орбита, наклонение 50, высота ок. 400.
Цитировать Jonathan McDowell‏Подлинная учетная запись @planet4589 7 ч. назад

Congrats to Leo Barhorst for locating the secret NRO sat launched by SpaceX on May 1 in a 400 km, 50 deg orbit (http://satobs.org )
ЦитироватьFrom: Ted Molczan via Seesat-l <seesat-l_at_satobs.org>
 Date: Tue, 23 May 2017 23:15:34 -0400

 The following elements are derived from Leo Barhorst's observations of early 2017 May 24 UTC:

USA 276 | 398 X 401 km
1 42689U 17022A 17144.06548369 .00000000 00000-0 00000-0 0 02
2 42689 49.9572 164.5366 0001907 186.7642 173.3300 15.56136012 06

Arc 20170524.02-0524.08 WRMS resid 0.044 totl 0.009 xtrk

The arc is short, so this solution is approximate, but it should be adequate to reacquire the object tonight andtomorrow.

Ted Molczan

tnt22


tnt22


tnt22

Теперь птиц пойман и на видео (пролёт 5 сек) по приведённым TLE
ЦитироватьUSA276
 
 
 Kevin Fetter
https://www.youtube.com/watch?v=4KxNq9vaG20
https://www.youtube.com/watch?v=4KxNq9vaG20

tnt22

http://spaceflight101.com/falcon-9-nrol-76/satellite-trackers-spot-classified-nrol-76-usa-276-satellite-in-low-earth-orbit/
ЦитироватьSatellite Trackers spot Classified NROL-76 (USA-276) Satellite in Low Earth Orbit

May 24, 2017



NROL-76 Mission Patch – Credit: NRO

Three weeks have passed since the secretive NROL-76 satellite launched atop a Falcon 9 rocket. Now satellite trackers have gotten hold of the clandestine spacecraft operated by the U.S. National Reconnaissance Office in a Low Earth Orbit 400 Kilometers in altitude.
Спойлер
lifted off fr om the Kennedy Space Center atop a SpaceX Falcon 9 rocket back on May 1st, becoming the first mission of the California-based launch services provider with a secret NRO satellite as main payload. Standard for NRO missions, no information on the payload's identity nor its target orbit were released for this mission.

However, safety zones identified for this launch showed Falcon 9 was most likely headed into a Low Earth Orbit and the propulsive return of the rocket's first stage to Cape Canaveral placed an upper bar on the satellite's mass.

The consensus among satellite watchers prior to launch was that NROL-76 is most likely a medium-weight technology demonstration satellite targeting a Low Earth Orbit, possibly to test out sensor technology for a future NRO project. In a departure fr om the complete secrecy surrounding its missions, the NRO said that the NROL-76 launch contract was procured by Ball Aerospace, strongly suggesting the company also manufactured the satellite which adds merit to the theory of NROL-76 carrying experimental optical or radar sensor equipment based on Ball's previous experience.


NROL-76 Liftoff – Photo: SpaceX

With high certainty that NROL-76 was headed into Low Earth Orbit, satellite trackers drew up possible orbital parameters that matched the north-easterly departure path identified by navigational warnings issued prior to launch as well as the impact location of the rocket's second stage that conducted a multi-hour coast & re-start test after dispatching the NROL-76 payload.

Various orbital scenarios fit with these constraints, indicating NROL-76 would most likely end up somewh ere between 300 and 400 Kilometers in altitude and an orbital inclination around 50 degrees – assuming no excessive out-of-plane maneuvers during launch.

Falcon 9 lifted off with its clandestine satellite payload at 11:15 UTC on May 1st and NROL-76 received a smooth ride up to the point of payload fairing separation shortly into the second stage burn when the mission headed into the typical news blackout of NRO launches. As evident from the flight timeline and live broadcast, Falcon 9 flew a lofted trajectory resembling that of Dragon missions headed to the International Space Station – indicating a single-burn ascent into a near-circular Low Earth Orbit.

The Joint Space Operations Center cataloged NROL-76 as USA-276 in the numbering system of U.S. military satellites, confirming the craft had arrived in orbit. Spotting the satellite in its classified orbit proved out to be difficult, not only due to uncertainty in orbital parameters but also a lack of visibility for much of the global satellite tracking community in the weeks after liftoff.


Photo: NRO

Initial attempts to identify NROL-76 through its radio downlink came up empty handed when no candidates showed up in the typical S-Band frequencies used for telemetry downlink. It became clear that several weeks would pass before the satellite would become visible for observers in Europe at which point it could have drifted far off any reasonably close pre-launch predictions.

Observer Leo Barhorst reported to the SeeSat Mailing List on Wednesday that he managed to catch NROL-76, showing up around nine minutes ahead of the pre-launch estimate. His measurements were used to upd ate tracking elements for the hush-hush satellite, circling the planet in an orbit of approximately 398 by 401 Kilometers at an inclination of 49.96 degrees.

Taking these parameters as a basis, trackers from Canada reported more observations, broadening the observation arc in order to lock down precise orbit parameters for NROL-76.

Satellite watchers will continue monitoring NROL-76 and potential activity such as orbital maneuvers or changes in brightness that could point to reconfigurations of the satellite such as the deployment of any large appendages.
https://www.youtube.com/watch?v=4KxNq9vaG20
USA-276's orbit is consistent with pre-launch speculation of a one-off NRO mission, most likely dedicated to testing out a new type of intelligence-gathering sensor package to retire risk for a future NRO program.


USA-193 Intercept 240km in altitude – Photo: U.S. Navy

A previous NRO Low Earth Orbit tech demonstration mission, USA-193, se t out to demonstrate a new radar payload to retire risk for the agency's Topaz radar constellation prior to its first launch. However, within hours of the craft's December 2006 launch, the satellite failed and could not be recovered, leaving the 2,300-Kilogram vehicle in an uncontrollable state and headed for re-entry within two years of launch. In February 2008, USA-193 was purposefully destroyed by an SM-3 missile when it had decayed to a point wh ere most debris created by the strike would re-enter within a period of days.

Although the architecture under which USA-193 was developed has largely been dismantled with the cancellation of the Future Imagery Architecture, a follow-on mission of similar nature but with different sensor equipment seems within reason given the NRO has shown desire in the past to test out systems for critical future missions beforehand – as illustrated by USA-193 and, more recently, USA-225 that launched in 2011 as a low-cost, small spacecraft mission to test out new technologies.


WorldView-3 (BCP-5000) – Photo: Ball Aerospace

Ball Aerospace's product palette only has two candidates that would fit this mission – the BCP-5000 and BCP-4000 satellite platforms which are the company's largest satellite buses and the only that would justify the use of the powerful Falcon 9 launcher.

BCP-5000 is optimized for large optical payloads and has flown three times to date for DigitalGlobe's WorldView program. These satellites weigh in at up to three metric tons and offer accommodations for high-resolution optical payloads in a variety of wavelength ranges. Of particular interest for optical collection is BCP's high agility through the use of Control Moment Gyros that allow the satellite to move from one target to the next within five seconds. WorldView-3, the most recent BCP-5000, achieves a ground resolution of 31 centimeters whereas the NRO's powerful Keyhole satellites are rumored to have a resolution around 10-15 centimeters.


BCP Radar Configuration – Photo: Ball/CSA

BCP-4000 is optimized for Synthetic Aperture Radar Payloads, having flown only once before on the RadarSat-1 mission of the Canadian Space Agency that carried a Canadian-built radar system primarily used for remote sensing.

The NROL-76 patch features a pair of explorers – Lewis & Clark – one peering into the distance with a telescope while the other intently looks toward the same direction with a rifle at the ready. The words 'Explore – Discover – Know' are inscribed on the patch which could indicate NROL-76 will be used as a technology demonstration, exploring a future sensor for intelligence-gathering craft, potentially making use of new technology or a novel wavelength band not previously used in reconnaissance.

The scope and rifle on the patch could also imply the satellite will take on a tactical role within the NRO's spying fleet.
[свернуть]

Старый

 Спутник-разведчик на наклонении 50 градусов? 
Хорошо хоть в каждом невнятном изображении перестали видеть Хаббл. 
1. Ангара - единственная в мире новая РН которая хуже старой (с) Старый Ламер
2. Назначение Роскосмоса - не летать в космос а выкачивать из бюджета деньги
3. У Маска ракета длиннее и толще чем у Роскосмоса
4. Чем мрачнее реальность тем ярче бред (с) Старый Ламер

Старый

Девиз "Исследовать-Открывать-Знать" указывает на чтото исследовательское. Но что... :(
 Что там за исследованиями занялось NRO... :(
1. Ангара - единственная в мире новая РН которая хуже старой (с) Старый Ламер
2. Назначение Роскосмоса - не летать в космос а выкачивать из бюджета деньги
3. У Маска ракета длиннее и толще чем у Роскосмоса
4. Чем мрачнее реальность тем ярче бред (с) Старый Ламер

tnt22

Цитировать
Scott Tilley‏ @coastal8049 20 мин. назад

#NROL76 USA 276 analysis by Ted Molzcan after first observation reports confirming orbit. http://www.satobs.org/seesat/May-2017/0127.html ...
http://www.satobs.org/seesat/May-2017/0127.html
ЦитироватьFrom: Ted Molczan via Seesat-l <seesat-l_at_satobs.org>
 Date: Wed, 24 May 2017 12:01:49 -0400
 
The following elements are derived from observations by Leo Barhorst, Kevin Fetter, Sergey Guryanov and Scott Tilley:

USA 276 | 390 X 409 km
1 42689U 17022A 17144.45083662 .00000000 00000-0 00000-0 0 05
2 42689 49.9984 162.7662 0014150 91.2112 269.0477 15.56119177 09

Arc 20170523.76-0524.47 WRMS resid 0.059 totl 0.021 xtrk

Sergey described it as "brighter than 3 mag," which based on the circumstances of his observation, suggests a standardvisual magnitude of about 4 (1000 km range, 90 deg phase angle).

The ground track nearly repeats after 3 days and 46 revs. U.S. imagery intelligence satellites tend to employ orbitswith ground tracks that repeat, or nearly so, after 2, 3 or 4 days.

The orbital solution is still fairly preliminary, but it is interesting to note that the argument of perigee is near 90deg. If this is confirmed by subsequent observations, and if it remains more or less constant long-term, then the orbitis of the frozen type.
Спойлер
Frozen orbits are intended to maintain as nearly a constant altitude above geoid as possible around the entire orbit.The argument of perigee may be frozen near 90 deg or 270 deg.

Below is a partial of list of satellites that have employed frozen orbits that I compiled in Jan 2007:

GEOS-3 radar altimeter
Seasat 1 SAR, radar altimeter
GEOSAT radar altimeter
Spot Earth resources imaging
Lacrosse SAR
UARS various Earth sensors
JERS 1 SAR
Topex/Poeidon radar altimeter
ERS SAR, radar altimeter
RadarSat SAR
GEOSAT FO radar altimeter
Landsat 7 Earth resources imaging
Terra spectroradiometers, radiometer
EO-1 Earth resources imaging
Jason 1 radar altimeter
Envisat SAR, radar altimeter, radiometers
Aqua radiometers, microwave sounder
Icesat altimeter, radiometer
ALOS SAR, radiometer
USA 193 classified

The known sensors of the above payloads predominantly employed radio waves, but some were optical. A frozen orbit isstrong evidence of an imaging payload, but not all imagers employ frozen orbits.

To the above list, we can add the three Worldview optical imaging satellites built on the Ball Aerospace BCP-5000 bus.Ball Aerospace is believed to have built USA 276, the payload of NROL-76, which adds to our interest in the possibilitythat its orbit may be frozen.
[свернуть]
Ted Molczan

Старый

А что, при наклонении 50 градусов перигей не прецессирует?  :o
1. Ангара - единственная в мире новая РН которая хуже старой (с) Старый Ламер
2. Назначение Роскосмоса - не летать в космос а выкачивать из бюджета деньги
3. У Маска ракета длиннее и толще чем у Роскосмоса
4. Чем мрачнее реальность тем ярче бред (с) Старый Ламер

SGS_67

ЦитироватьПрол пишет:
Первый репортаж не о пуске, а о посадке  :)  .
ПМСМ, в основном, потому, что полёт 2-й ступени - топ сикрет. Никаких рокиткамов.
И всё внимание уделили спуску первой.
Аппаратура наблюдения с Земли также впечатляет качеством наведения и картинки.
До этого, такого не припомню. Даже по Шаттлам. 
Теперь мы можем себе хотя бы внятно представить, какой объём работы проделывает 1-я ступень Фалькона при спуске, для возможности собственной посадки.
И поздравить инженеров СпейсИкс с удачным, теперь уже можно сказать, решением столь сложной задачи.
:)

SGS_67

#459
Цитироватьche wi пишет:
Крупный план первой ступени в свободном падении интересно смотрелся.
Она не была в свободном падении.
Она находилась в управляемом полёте.
От момента запуска, и до момента посадки.