R3D2 (DARPA) – Electron – Mahia – 28.03.2019 22:37 UTC

Автор tnt22, 23.01.2019 01:27:29

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tnt22

ЦитироватьDARPA‏Подлинная учетная запись @DARPA 9 мар.

R3D2 carries a tissue-thin Kapton membrane antenna that stows compactly for launch and then deploys to 2.25 meters diameter once in LEO. Learn more about R3D2 at https://www.darpa.mil/news-events/2019-01-22b ....
См #3

tnt22

ЦитироватьRocket Lab‏Подлинная учетная запись @RocketLab 12 ч. назад

Launch update: DARPA's payload team is conducting final ground station configuration work over the coming days. To allow for the completion of this, we are currently targeting late next week for lift-off of the #R3D2 mission.


tnt22

ЦитироватьMMA P DaHGR Movie

MMA Design

Опубликовано: 6 нояб. 2018 г.

Deployment Video for the MMA P-DaHGR Antenna. Approved for public release. Unlimited distribution.
https://www.youtube.com/watch?v=likeDzx5nrwhttps://www.youtube.com/watch?v=likeDzx5nrw (1:23)

tnt22

https://mmadesignllc.com/product/p-dahgr-antenna/
ЦитироватьPantograph Deployable High-Gain Reflectarray ("P-DaHGR") Antenna

MMA's DaHGR Antennas enable a range of high-performance systems packaged in small stowed volumes. Our DaHGRs are configurable and feature both wideband and narrowband architectures.

The P-DaHGR antenna architecture is realized using very lightweight, flexible membrane substrates, tensioned via a pantographic mechanism, where the prefix "P" denotes the Pantograph-tensioning method.

The P-DaHGR antenna solution combines the best attributes of successfully flown solutions, but with advantages in performance, compaction and simplicity, and significantly reduces the development and implementation risk by leveraging proven technologies. A large, space-fed reflectarray provides equivalent performance as a conventional parabolic reflector for all missions not requiring extremely large bandwidth. Bandwidths achievable by reflectarrays easily support a multitude of mission requirements.

Key characteristics:
    [/li]
  • Prime offset-fed reflector configurations
  • UHF – Ka band
  • 5 – 10+% bandwidth
  • 1m² – 20m² aperture
  • Up to 0.4m²/U packing efficiency
  • 6U+ volume
DaHGR™ and P-DaHGR™ are trademarks of MMA Design LLC.







tnt22

ЦитироватьNorthrop Grumman‏Подлинная учетная запись @northropgrumman 10 ч. назад

We're getting excited for this month's @DARPA R3D2 launch! #NorthropGrumman is the prime contractor & integrated the satellite; @BlueCanyonTech provided the bus; @TridentSystemsi designed R3D2's radio; @mmadesignllc designed & built the antenna. Here's an idea of what'll happen.

Video (0:30)

tnt22

NOTMARs
ЦитироватьHYDROPAC 858/2019 (76)

WESTERN SOUTH PACIFIC.
NEW ZEALAND.
DNC 06.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
   2230Z TO 0230Z COMMENCING DAILY
   19 MAR THRU 03 APR IN AREA BOUND BY
   39-15.0S 177-49-0E, 39-12.5S 177-51.0E,
   39-12.5S 178-11.9E, 39-19.0S 178-11.9E,
   39-19.0S 177-49.0E.
2. CANCEL THIS MSG 040330Z APR 19.

( 150909Z MAR 2019 )


HYDROPAC 853/2019 (76,83)

SOUTH PACIFIC.
DNC 06.
1. HAZARDOUS OPERATIONS, SPACE DEBRIS
   2230Z TO 0230Z COMMENCING DAILY
   19 MAR THRU 03 APR IN AREA BOUND BY:
   A. 39-00S 176-00W, 39-00S 171-30W,
   40-15S 171-30W, 40-15S 176-00W.
   B. 38-30S 161-45W, 37-30S 155-15W,
   38-30S 155-00W, 39-30S 161-30W.
2. CANCEL THIS MSG 040330Z APR 19.

( 142358Z MAR 2019 )
Пусковой период: с 19.03.2019 по 03.04.2019
Пусковое окно: ежедневно с 22:30 до 02:30 UTC

кукушка

Rocket Lab: 

"Команда DARPA в течение ближайших дней проведёт окончательную работу с полезной нагрузкой предстоящей миссии. В конце следующей недели мы планируем запустить миссию R3D2" 

Ранее, 18 февраля, уже были проведены статические (Wet dress) испытания.

Напомним, Rocket Lab планируют запустить на орбиту миссию R3D2 (Radio Frequency Risk Reduction Deployment Demonstration) по заказу Агентства перспективных исследовательских проектов в области обороны (DARPA) в интересах Министерства обороны США.

tnt22

Согласно крайним NOTMARs, пусковой период может быть сдвинут вправо

NOTMARs
ЦитироватьHYDROPAC 914/2019 (76)

WESTERN SOUTH PACIFIC.
NEW ZEALAND.
DNC 06.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
   2030Z TO 0300Z COMMENCING DAILY
   25 MAR THRU 06 APR IN AREA BOUND BY
   39-15.0S 177-49-0E, 39-12.5S 177-51.0E,
   39-12.5S 178-11.9E, 39-19.0S 178-11.9E,
   39-19.0S 177-49.0E.
2. CANCEL THIS MSG 070400Z APR 19.

( 200812Z MAR 2019 )


HYDROPAC 915/2019 (76,83)

SOUTH PACIFIC.
DNC 06.
1. HAZARDOUS OPERATIONS, SPACE DEBRIS
   2230Z TO 0230Z COMMENCING DAILY
   25 MAR THRU 06 APR IN AREAS:
   A. BETWEEN
   39-00S 40-15S AND 176-00W 171-30W.
   B. BOUND BY
   38-30S 161-45W, 37-30S 155-15W,
   38-30S 155-00W, 39-30S 161-30W.
2. CANCEL THIS MSG 070330Z APR 19.

( 200824Z MAR 2019 )
Пусковой период: с 25.03.2019 по 06.04.2019
Пусковое окно: ежедневно с 22:30 до 02:30 UTC

При этом NOTMARs (#27HYDROPAC 853/2019 и HYDROPAC 858/2019 не отменены и остаются в силе.

tnt22

https://www.rocketlabusa.com/launch-info/launch-complex-1/
Цитировать
LAUNCH INFORMATION
Rocket Lab is currently targeting no earlier than 22:30, Sunday 24 March UTC (11:30 am, Monday 25 March NZDT) for the next Electron mission.

Launch window: Rocket Lab is currently targeting no earlier than 24 March UTC, and the launch window is open until 29 March 2019, UTC (25 March NZDT). 
Launch timing: Launch attempts will only take place between 11:30 - 15:30 NZDT (22:30 - 02:30 UTC). 

tnt22

Карта закрываемых зон

tnt22

ЦитироватьRocket Lab‏Подлинная учетная запись @RocketLab 1 ч. назад

The launch window for the DARPA R3D2 mission is four hours long each day.
Here's your handy dandy timezone guide!

NZDT: 11:30 - 15:30
UTC: 22:30 - 02:30
PDT: 15:30 - 19:30
EDT: 18:30 - 22:30


1 ч. назад

Following today's launch readiness review for the DARPA #R3D2 mission, Electron is go for launch! We are currently targeting no earlier than 22:30, Sunday 24 March, UTC.


tnt22


tnt22

ЦитироватьRocket Lab‏Подлинная учетная запись @RocketLab 7 ч. назад

We don't just go to orbit, we deploy satellites with exquisite accuracy. Electron's Kick Stage takes our customers' satellites exactly where they need to go. Looking forward to flying another Kick Stage on our @DARPA #R3D2 mission. L-2 days! http://www.rocketlabusa.com/vehicle/kickstage/ ...


tnt22

ЦитироватьRocket Lab‏Подлинная учетная запись @RocketLab 10 ч. назад

We are at L-1 day for the @DARPA #R3D2 mission on Electron! Weather is tracking green and we're currently targeting no earlier than 22:30 UTC tomorrow (11:30 NZDT) for lift-off.

tnt22

https://www.rocketlabusa.com/live-stream

ЦитироватьLIVE STREAM

Rocket Lab is currently targeting no earlier than 22:30, Sunday 24 March UTC for the DARPA R3D2 mission on Electron.

A live webcast of the launch will be available on this page approximately 15 minutes prior to the target T-0 time.

tnt22


tnt22

https://spaceflightnow.com/2019/03/23/rocket-lab-readies-for-launch-with-u-s-military-satellite/
ЦитироватьRocket Lab readies for launch with U.S. military satellite
March 23, 2019Stephen Clark


The Electron rocket's payload shroud for the R3D2 mission. Credit: Rocket Lab

Rocket Lab teams in New Zealand are preparing for the company's first launch of the year Sunday (U.S. time) with a small experimental satellite for DARPA, the U.S. military's research and development agency.

Liftoff of Rocket Lab's two-stage Electron rocket fr om the company's commercial launch base in New Zealand is set for a four-hour window opening at 6:30 p.m. EDT (2230 GMT) Sunday.

In New Zealand, the launch window opens at 11:30 a.m. local time Monday. Rocket Lab plans to webcast the launch live beginning around 15 minutes before liftoff.

Standing 55 feet tall, Rocket Lab's Electron Rocket will take off from Launch Complex 1, located on Mahia Peninsula on the east coast of New Zealand's North Island.

The launch will mark the fifth flight of the company's privately-developed Electron booster since its inaugural test flight in May 2017, and the third in less than five months.

Made of lightweight carbon fiber structures, the Electron is designed to deploy small satellites into orbit on dedicated rides, freeing spacecraft owners from often-restrictive rideshare launches, wh ere smallsats have little say over launch schedules and target orbits.

Powered by nine Rutherford first stage engines that burn kerosene and liquid oxygen propellants, the Electron rocket will head east from Launch Complex 1 and exceed the speed of sound as it climbs into the stratosphere.

A second stage with a single Rutherford engine will fire more than six minutes to reach a preliminary orbit, then will deploy Rocket Lab's restartable Curie kick stage.

The mission's sole payload is the Defense Advanced Research Projects Agency's Radio Frequency Risk Reduction Deployment Demonstration satellite.

The Curie stage will fire its engine nearly two minutes to place the DARPA-owned payload into a circular 264-mile-high (425-kilometer) orbit inclined 39.5 degrees to the equator.

The Curie upper stage will deploy its satellite payload around 53 minutes after liftoff.

Known as R3D2, the 330-pound (150-kilogram) spacecraft will demonstrate a new type of membrane reflect array antenna that can be packed into a tight volume for launch on a small rocket, then unfurl once in space.


The R3D2 satellite will test the deployment and performance of a ultra-thin antenna reflector in orbit. Credit: MMA Design

R3D2's antenna is made of a tissue-thin Kapton membrane, and will deploy to a diameter of nearly 7.4 feet (2.25 meters) in orbit, according to DARPA.

During a demonstration mission slated to last at least six months, engineers will monitor the dynamics of the antenna's deployment, and evaluate its performance.

"The antenna could enable multiple missions that currently require large satellites, to include high data rate communications to disadvantaged users on the ground," officials wrote in a mission summary posted on DARPA's website. "A successful demonstration also will help prove out a smaller, faster-to-launch and lower cost capability, allowing the Department of Defense, as well as other users, to make the most of the new commercial market for small, inexpensive launch vehicles."

DARPA says the R3D2 satellite cost approximately $25 million, and the agency's commercial launch contract with Rocket Lab has a value of $6.5 million.

"The Department of Defense has prioritized rapid acquisition of small satellite and launch capabilities. By relying on commercial acquisition practices, DARPA streamlined the R3D2 mission from conception through launch services acquisition," said Fred Kennedy, director of DARPA's Tactical Technology Office. "This mission could help validate emerging concepts for a resilient sensor and data transport layer in low Earth orbit – a capability that does not exist today, but one which could revolutionize global communications by laying the groundwork for a space-based internet."

The design and development of the R3D2 satellite took approximately 18 months, according to DARPA.

Northrop Grumman is prime contractor for the R3D2 mission and assembled the satellite. Blue Canyon Technologies of Boulder, Colorado, provided the spacecraft platform, and MMA Design in Louisville, Colorado, built the antenna. Trident Systems, headquartered in Fairfax, Virginia, designed and built R3D2's software-defined radio, DARPA said.

MMA Design's Pantograph Deployable High-Gain Reflectarray antenna can work in a wide range of radio frequencies — from UHF to Ka-band — supporting broadband, voice, video and data relay missions.


Rocket Lab's launch team conducted a wet dress rehearsal on the Electron rocket Feb. 18 at Launch Complex 1, in which the Electron rocket was loaded with liquid propellants during a simulated countdown. Credit: Rocket Lab

The antenna is scheduled to unfurl to its full size around a week after launch to commence a series of tests for DARPA, including the downlink of encrypted data to U.S. government ground terminals, the agency said in response to questions from Spaceflight Now.

The mission is set to last up to six months, but the spacecraft is designed for an 18-month lifetime.

The R3D2 mission is Rocket Lab's first launch for the U.S. military. It is also the company's first launch of a microsatellite, after previous Electron flights carried clusters of much smaller CubeSats to space.

Rocket Lab is a U.S.-New Zealand company, with its corporate headquarters in California and its primary rocket manufacturing plant in Auckland. The company is building a second launch pad at Wallops Island, Virginia, for missions as soon as late this year.

"Rapid acquisition of small satellite launch capabilities is increasingly important to U.S. government organizations like DARPA. The ability to rapidly space-qualify new technology and deploy space-based assets with confidence on short notice is a service that didn't exist for dedicated small satellites until now," said Peter Beck, Rocket Lab founder and CEO. "We're honored to provide Electron's agile and flexible launch service to DARPA and we look forward to delivering the innovative R3D2 payload to orbit."

Rocket Lab announced the R3D2 mission in January, when officials said the launch was scheduled for late February. Rocket Lab said delays in delivering the R3D2 satellite from its U.S. factory to New Zealand caused the one-month slip in the launch date.

tnt22

ЦитироватьRocket Lab‏Подлинная учетная запись @RocketLab 9 мин. назад

Launch update: Rocket Lab is targeting no earlier than 23:36 UTC for today's #R3D2 mission. This T-0 is driven by the Collision On Launch Assessment (COLA). Essentially, this means we time the launch for a break in space traffic from other satellites and the ISS.


7 мин. назад

Timezone conversions:

NZDT: 12:36
PDT: 16:36
EDT: 19:36

tnt22