Momentus space

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Momentus Inc, sometimes styled Momentus space, is an American spaceflight company founded by Mikhail Kokorich which plans to offer space infrastructure services in the form of on-orbit services. [1] [2] [3] The company advertises three orbital tug services which are based around spacecraft electric propulsion and vary in payload mass and Delta-v. As of late 2022 the company has launched one demonstration mission, which produced positive results. [4]

Contents

History

Momentus space was a 2018 graduate of the Y Combinator program.

Momentus space received 8.3 million US dollars of seed funding in November 2018. [3] The investors were Prime Movers Lab, Liquid 2 Ventures, One Way Ventures, Mountain Nazca, Y Combinator, and others.

In 2019, Momentus claimed that its Microwave Electrothermal Thruster (MET) was successfully tested in space, though the U.S. Securities and Exchange Commission accused it of misleading investors via this claim. [5]

In 2020, Momentus was merged with a SPAC which valued it at 1.2 Billion US dollars [6] though its valuation quickly dropped to half of this value when it began public trading. [2]

Momentus space had its first demonstration launch of a vehicle in 2022, which achieved great results.

Services

Momentus space lists plans to offer "space infrastructure" services, including space transportation, on-orbit refueling, and on-orbit services of satellites. Space transportation in the form of space tugs is particularly emphasized. The website lists three models of tug with successively larger payload masses and Delta-v capabilities, in ascending order, name Vigoride, Ardoride, and Fervoride. A still larger tug, called Valoride, has since been removed from their website. [3] These tugs are propelled by the company's Microwave Electrothermal Thruster (MET), a form of spacecraft electric propulsion in which water is ionized by microwaves and accelerated out of the spacecraft. The specific impulse of these propulsion systems is targeted to be "two or three times" that of chemical propulsion systems, putting them at the low end of existing electric propulsion systems (this conversely puts them at the high end of the specific thrust, or thrust per unit input power). [3]

First demonstration flight

On May 26, 2022, Momentus space launched its first demonstration mission on a SpaceX Falcon 9 launch vehicle as part of the Transporter-5 multi-payload ride-share launch. [7] The Momentus Vigoride-3 space tug was one of several private space tugs launched by that mission. The Vigoride tug carried several payloads for two customers, FOSSA Systems and Orbit NTNU. The Vigoride spacecraft experienced multiple anomalies: at least one due to folding solar panels not deploying, and at least one which caused an off-nominal communication mode. [4] [8] [9] The spacecraft deployed two FOSSA satellites on May 28, 3 days after its launch, and four more between June and August inclusive. Between August and September inclusive, the spacecraft deployed its Orbit NTNU payload, called SelfieSat. As of September 2022, two remaining FOSSA payloads remained un-deployed on the Vigoride spacecraft. [10]

Another Vigoride demonstration mission, using the Vigoride-5 spacecraft, launched on the SpaceX Transporter-6 launch on 3 January 2023. [11]

Related Research Articles

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Vigoride is a space tug that is under development by Momentus Space. The total payload capacity that it can support to LEO is 750 kg. Vigoride is capable of changing orbital planes, inclination, and propelling spacecraft to up to 2 km/s. It also provides small satellite operators access to power, communications, and station keeping while with the tug. Momentus states that the cost is roughly $15,000 per kg depending on the exact customer specifications. Vigoride uses a microwave electrothermal thruster (MET) and water as the propellant. In 2019, the first test of the MET in space was completed and was deemed a success in a press release, while the U.S. Securities and Exchange Commission accused it of misleading investors. The maiden launch was originally scheduled for January 2021, but was delayed due to Momentus not being able to receive FAA approval before the launch. On 22 March 2021, a Vigoride mock-up named Vigoride SC was launched in place of a functional Vigoride. In October 2020, the company stated that it had already booked 1.5 Vigorides out of the 3 planned to be launched in December 2021. On 25 May 2022, Momentus launched its first Vigoride spacecraft aboard SpaceX Transporter 5 mission.

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References

  1. "Momentus" . Retrieved 21 December 2022.
  2. 1 2 Sheetz, Michael (13 August 2021). "Space company Momentus begins trading on the Nasdaq, with new CEO after turbulent SPAC merger". CNBC. Retrieved 2022-12-28.
  3. 1 2 3 4 "Momentus Plasma Water Propulsion Will Be Two to Three Times Better Than Chemical Rockets | NextBigFuture.com". 2018-11-14. Retrieved 2022-12-28.
  4. 1 2 "Vigoride™ First Flight". momentus.space. Retrieved 2022-12-28.
  5. "Order Instituting Cease-and-desist proceedings against Momentus, Inc" (PDF). US Securities and Exchange Commission.
  6. "MOMENTUS TO BECOME PUBLIC THROUGH MERGER WITH STABLE ROAD ACQUISITION CORP". US Securities and Exchange Commission. Retrieved 2022-12-28.
  7. Foust, Jeff (2022-05-26). "SpaceX launches Transporter-5 dedicated smallsat rideshare mission". SpaceNews. Retrieved 2022-12-28.
  8. Mike Wall (2022-06-10). "Momentus troubleshooting problems with newly launched space tug". Space.com. Retrieved 2022-12-28.
  9. Foust, Jeff (2022-06-14). "Momentus increasingly pessimistic about first Vigoride mission". SpaceNews. Retrieved 2022-12-28.
  10. "Momentus First Demonstration Mission Update #5". momentus.space. Retrieved 2022-12-28.
  11. "Live coverage: SpaceX counting down to first launch of 2023". 3 January 2023.