Author Topic: Northrop Grumman: Cygnus Update Thread  (Read 413978 times)

Offline DanClemmensen

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #420 on: 08/03/2023 08:49 pm »
August 2nd updates from the International Space Station Research and Development Conference

Planned:

“Mission B” Variant: 4 segment version debuts with NG-23 in 2025
Uprated from 3750kg (3 segment "enhanced" version) to 5000kg of cargo.
Mass growth is concurrent with extra lift capability of Antares 330

Studying:

Switching to docking (presumably with IDS) vs berthing
Increasing production rate to 2 vehicles a year
Capability to do multiple reboosts per mission for the ISS and other commercial stations (note that they are also bidding for the ISS deorbit vehicle based on Cygnus)
There appears to be a lot of contention for the two IDS ports on ISS already.  Would they (NASA?, NG?) add another IDSS port to ISS?
Isn't the Shooting Star module from Dream Chaser basically an IDSS-to-CBM adapter? I have to imagine they've at least considered the possibility of leaving one of those behind, rather than taking it for disposal...
I'm not very familiar with ISS ports. Is there an unused or little-used CBM somewhere?

Offline russianhalo117

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #421 on: 08/03/2023 09:44 pm »
August 2nd updates from the International Space Station Research and Development Conference

Planned:

“Mission B” Variant: 4 segment version debuts with NG-23 in 2025
Uprated from 3750kg (3 segment "enhanced" version) to 5000kg of cargo.
Mass growth is concurrent with extra lift capability of Antares 330

Studying:

Switching to docking (presumably with IDS) vs berthing
Increasing production rate to 2 vehicles a year
Capability to do multiple reboosts per mission for the ISS and other commercial stations (note that they are also bidding for the ISS deorbit vehicle based on Cygnus)
There appears to be a lot of contention for the two IDS ports on ISS already.  Would they (NASA?, NG?) add another IDSS port to ISS?
Isn't the Shooting Star module from Dream Chaser basically an IDSS-to-CBM adapter? I have to imagine they've at least considered the possibility of leaving one of those behind, rather than taking it for disposal...
I'm not very familiar with ISS ports. Is there an unused or little-used CBM somewhere?
The poster is referring to Sierra Space's Dream Chaser's Shooting Cargo module (and Orbital Service Module) based off of the purpose and function of Boeing's Pressurized Mating Adapter (though designed by LM, SS, and Applied Composites and built by Applied Composites) which has a pass-through tunnel through which it comprises a 1.2m or1200mm internal pressurized diameter IDSS regulated passive mating ring, consisting of either a APAS/IDSS designed/compliant hard capture system with no soft capture system or an APAS/IDSS designed/compliant hard capture system with a soft capture system or as in this current configuration a bolt on pyrotechnically frangible mating ring, on one end that is attached to DC from spacecraft integration for flight until after the deorbit burn and on the other end of the conical module a Boeing Space Systems Passive Common Berthing Mechanism mating ring with an internal pressurized diameter of 1.8m or 1800mm. Dream Chaser has an 1.2m or1200mm internal pressurized diameter APAS/IDSS regulated active mating ring by default with the current configuration using the IDSS contingency separation system  as its redundant primary and secondary jettison method which uses a pyrotechnically frangible charge to split apart and separate the mating ring.

Long winded answer.

The presently available ACBM counterpart equivalent ports are Node-1 Nadir and Node-2 Nadir for visiting vehicles.
« Last Edit: 08/03/2023 09:46 pm by russianhalo117 »

Offline cohberg

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #422 on: 01/16/2024 04:14 pm »
Additional Renders of Cygnus:

Deep Space Cygnus Concept
all handwavy speculation from this point forward
4x segment pressure vessel from mission B variant
4 meter service section
Uprated solar arrays from their geo sat bus line in lieu of Ultraflex solar arrays
2x BT-4 engines
External payloads are now located on the rear of the craft
Artist believes that Cygnus be the first logistics vehicle to get to Gateway, capture the flag and deliver Canadarm3 /s

4 segment, Mission "B" variant


Offline Nighthawk117

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #423 on: 03/28/2024 07:56 am »
« Last Edit: 03/28/2024 07:57 am by Nighthawk117 »

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Offline ddspaceman

Re: Northrop Grumman: Cygnus Update Thread
« Reply #426 on: 07/02/2024 12:28 pm »

Offline StraumliBlight

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #427 on: 01/10/2025 11:05 pm »
NASA acquired an extra Cygnus launch [Dec 23]

Quote
NASA has determined that allowing an exception for this requirement from the Fair Opportunity requirements at FAR 16.505 is in the best interest of the Government because NG is the only CRS-2 awardee capable of providing the required services and unique capabilities to meet the ISS requirements for 2028. NG’s ability to provide uninterrupted reliable cargo resupply services for large items is necessary to ensure sufficient cargo transportation services to and from the ISS. Having NG perform cargo resupply, reboost, and waste disposal services for the anticipated mission will ensure that NASA meets its statutory obligations, its obligations to its International Partners, and the Government's need to maintain the ISS. Due to the unprecedented uncertainty of the timeframe, this also allows the ISS Program to be best postured to support the operations of the ISS.

Offline jarmumd

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #428 on: 01/11/2025 03:18 pm »
I find it interesting that NASA specifically calls out Cygnus Berthing and the advantages of moving large cargo (docking ports are much smaller diameter/area).  I find this interesting because Cygnus received NASA funding to develop a docking capability.  Does this mean that there were be two variants?  Or a docking to CBM adapter (which would make a lot of sense actually)?  SpaceX specifically avoided having multiple variants by moving only to Dragon 2.

Offline StraumliBlight

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #429 on: 04/18/2025 08:00 pm »


26:30: Cygnus-23 will launch "mid-September".

Offline Tywin

Re: Northrop Grumman: Cygnus Update Thread
« Reply #430 on: 04/20/2025 12:29 pm »
In what rocket will fly the NG-23?
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Offline Tomness

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #431 on: 04/20/2025 08:57 pm »
In what rocket will fly the NG-23?

F9. Antares with FF's Miranda isn't ready yet

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #432 on: 04/23/2025 05:25 am »
In what rocket will fly the NG-23?

F9. Antares with FF's Miranda isn't ready yet
when will the new Antares be ready?
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Offline Tomness

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #433 on: 04/23/2025 11:38 am »
In what rocket will fly the NG-23?

F9. Antares with FF's Miranda isn't ready yet
when will the new Antares be ready?

That’s outdated, the current quote is that Antares 330 is scheduled to launch sometime in Q4 2025 to Q1 2026, “depending on exactly FF ships the first stage of the rocket “

Are you a space industry insider passing on information that wasn't formerly publicly available? I ask because all the public sources I've found still point to an August 2025 first flight. For example Salo's US launch schedule (https://forum.nasaspaceflight.com/index.php?topic=8184.msg2652645#msg2652645) and https://nextspaceflight.com/launches/details/7072 show NET August 2025.


https://arstechnica.com/space/2024/07/firefly-is-building-fast-and-breaking-things-on-path-to-a-reusable-rocket/

From July

Quote
Firefly is moving fast to deliver the first booster stage for the Antares 330 to Northrop Grumman early next year, according to Weber. Once the booster is transported to the Antares launch site at Wallops Island, Virginia, technicians will complete assembly and install the rocket's upper stage. Antares 330 is scheduled to make its first launch in late 2025 or early 2026, Weber said.

More recently (December 10 2024), and more ambiguously, Jason Kim said "we’re going to deliver that MLV first stage next year" https://open.spotify.com/episode/4rZBMqAYvK2FTzVllKRXnE  (~33:00) Which does make it sound like Antares 330 S1 delivery is still planned for 2025.

You guys Interpret it to be 1st quarter next year.  They might make it to end of 2025.

Offline StraumliBlight

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #434 on: 09/11/2025 12:55 pm »
1021-EX-CN-2025 [Sep 10]

Quote from: Technical Description
The overall goal of the HUCSat mission is to deploy a novel payload: a method for deploying and periodically orienting solar panels using Nickel Titanium (a.k.a. nitinol, a shape-memory alloy) springs. The nitinol spring array will be selectively actuated throughout the orbital cycle to orient the solar panel faces toward the sun. The HUCSat project is developed by members of the Harvard Undergraduate Aerospace Collective, an undergraduate student engineering organization at Harvard University.

The satellite will be launched as a secondary payload aboard the NG-24 ISS resupply mission, from Cape Canaveral, Florida, no earlier than April 1, 2026. It will be inserted into an orbit at 410 km apogee and 410 km perigee, on an inclination from the equator of 51.6 degrees. Transmission will begin 30 minutes after deployment and cease upon demise. Atmospheric friction will slow the satellite and reduce the altitude of the orbit, until de-orbiting occurs less than a year after launch.

The spacecraft is a single unit with the dimensions of two stacked 10 cm X 10 cm X 10 cm CubeSat modules (giving an overall dimension of 10 cm X 10 cm X 20 cm). See the Orbital Debris Assessment Report for details.

IARU: Harvard Undergraduate CubeSat [Aug 26]

Quote
Planning a launch to the ISS on Voyager Space on a Northrup Grumman resupply mission (NG-24) from Wallops Island NET April 2026.



LEOPARDSat-1 Satellite Technical Description

Quote
The overall goal of the LEOPARDSat-1 mission is to study the effectiveness of carbon-carbon composite materials in shielding against ionizing radiation by comparing the shielded dose to an unshielded dose. A total of sixteen sensors will be used to gather radiation data: 6 unprotected sensors and 10 sensors shielded with varying amounts of Carbon-Carbon High Density Polyethylene (CC-HDPE) composite samples. LEOPARDSat-1 will utilize a basic store-andforward technique to deliver data to the ground station as the satellite passes overhead.

The satellite will be launched to the ISS aboard Commercial Resupply Services (CRS) Flight NG24, from Wallops Flight Facility, Virginia, USA no earlier than April 1, 2026. From the ISS, it will be deployed into an orbit at 400 km apogee and 400 km perigee, on an inclination from the equator of 51.6 degrees. Transmission will begin 1-2 weeks after deployment, and cease when atmospheric friction will slow the satellite and reduce the altitude of the orbit. De-orbiting will occur approximately 2 years after launch.

The spacecraft is a single unit with the dimensions of 1U stacked 10 cm X 10 cm X 11.35cm CubeSat modules (giving an overall dimension of 10 cm X 10 cm X 11.35 cm.). The total mass is about 0.960 kg.

Low Earth Orbit Platform for Aerospace Research and Development Satellite 1

Quote
LEOPARDSat-1 is a CubeSat mission to study the effectiveness of lightweight carbon-based composites in shielding against ionizing radiation. To do this, the satellite will measure the difference in radiation dose between sensors partially protected by varying thicknesses of such materials and those which are left unprotected.
« Last Edit: 11/18/2025 02:52 pm by StraumliBlight »

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #435 on: 09/12/2025 04:50 pm »
Quote
Ryan Caton@dpoddolphinpro

BREAKING: NG-24 resupply will fly on a Falcon 9 - this is an additional 4th flight beyond the original 3 booked following the retirement of the Antares 230+. It sounds like this 4th flight was purchased a little while ago.

Beyond that, @NorthropGrumman will work with @NASA on the manifest. "We're making great progress on the Antares 330". The first flight of that vehicle is NET 2026.

The NG-22 mission will be manifested in the future. As a reminder, the Cygnus spacecraft for this mission was damaged at sea.

https://x.com/dpoddolphinpro/status/1966532165153267956
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Offline StraumliBlight

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #436 on: 09/16/2025 03:50 pm »
Northrop Grumman-23 (NG-23), a Cygnus XL resupply mission, launches to the International Space Station [Sep 15]

Quote
In Thales Alenia Space’s Turin plant, the primary structure of NG-24 has already been completed and is ready for testing this fall, while the PCM-25 is already in the welding phase.

Offline StraumliBlight

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #437 on: 11/22/2025 01:30 pm »
SAM.gov: Commercial Resupply Services (CRS) 2 Contract NNJ16GU21B [updated Nov 21]

Quote
This justification documents the basis for issuing an order under the Commercial Resupply Services (CRS) 2 Contract NNJ16GU21B using an exception to the Fair Opportunity process.

Contract Award Date: Sep 23, 2025

Quote from: JEFO+Redacted
This action is a firm-fixed price order for two Northrop Grumman (NG) Resupply Service Standard Mission Bs on a Contract Line Item Number (CLIN) 1 Task Order. CRS-2 CLIN 0001 describes the standard resupply service missions available under each offeror’s contract.

[...]

The total estimated price of the proposed orders is ██████; this amount consists of ██████ for a NG Standard Mission B in calendar year 2028 and ██████ for a Standard Mission B in calendar year 2029. This estimate does not reflect a multi-mission purchase discount which is anticipated to reduce the mission prices. The estimated period of performance for each mission is nominally a █████████ template from the Authority to Proceed milestone to Mission Launch, plus the subsequent berthed mission duration up to ███ days post launch.



Northrop Grumman planning Cygnus upgrades

Quote
An upgraded version in development will increase that to 5,000 kilograms, said Lucas Migliorini, cargo logistics development engineering manager at Northrop Grumman, in another conference presentation.

The “Mission B” version of Cygnus stretches the payload module of the spacecraft by 1.5 meters to accommodate the additional cargo. That version of Cygnus is scheduled to make its first flight on the NG-23 cargo mission, currently planned for launch in mid-2025.

Cygnus XL.
« Last Edit: 11/24/2025 10:45 am by StraumliBlight »

Offline DanClemmensen

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #438 on: 11/22/2025 02:53 pm »
SAM.gov: Commercial Resupply Services (CRS) 2 Contract NNJ16GU21B [updated Nov 21]
Quote
This justification documents the basis for issuing an order under the Commercial Resupply Services (CRS) 2 Contract NNJ16GU21B using an exception to the Fair Opportunity process.
Thanks!
The contract issue date makes it appear that this is assiciated with the decision to not fly cargo Dream Chaser missions.

According to the PDF, it's sole-source because Cygnus uses the Berthing port and Cargo Dragon uses the docking ports. NASA knows the two docking ports are already in use during this period so they cannot add additional long-term CRS Dragons.

Not mentioned in the document, this rules out Starliner for a long-term cargo mission. I suppose NASA could still fly a token Starliner cargo mission, but it cannot replace a real Cygnus mission or a real Cargo Dragon mission.
« Last Edit: 11/24/2025 12:42 pm by DanClemmensen »

Offline StraumliBlight

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Re: Northrop Grumman: Cygnus Update Thread
« Reply #439 on: 11/24/2025 10:48 am »
The contract issue date makes it appear that this is associated with the decision to not fly cargo Dream Chaser missions.

The Sep 23rd contract award date was 4 days after the last NASA ASAP meeting and 2 days before the Dream Chaser cancellation announcement, so it seems likely.

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