Tag: Alpha

According to the rocket startup Firefly, a software issue prevented the engine on the upper stage of its Alpha rocket from firing its final burn, leaving a Lockheed Martin satellite in the wrong orbit.

In a Feb. 20 statement, Firefly said an error with the guidance, navigation and control (GNC) software for the upper stage of the Alpha on the company’s “Fly the Lightning” mission Dec. 22 kept the upper stage from firing as planned to circularize its orbit. That left the upper stage and its payload, a Lockheed Martin technology demonstration satellite, in an orbit with a low perigee.

The investigation, which included the company’s own mishap team as well as an independent review, found that the error in the GNC software algorithm “prevented the system from sending the necessary pulse commands to the Reaction Control System (RCS) thrusters ahead of the stage two engine relight.” Firefly didn’t elaborate on the issue, but the RCS thrusters likely would have been used to ensure the stage was in the proper orientation and to settle its tanks so propellant would flow from them into the engine.

From this description it appears the attitude thrusters (RCS) had not worked correctly, and this made it impossible for the main engine to fire, either because the computer sensed it was in the wrong orientation, or its fuel could not flow properly to the engine.

The company says it has made corrections, and still expects to launch four times this year.

Capitalism in space: Shortly after Firefly completed the first successful orbital launch of its Alpha rocket, the U.S. Space Force awarded the company its first military launch contract.

The VICTUS NOX mission will demonstrate an end-to-end Tactically Responsive Space capability, including the launch segment, space segment, ground segment, and on-orbit operations. VICTUS NOX will perform a Space Domain Awareness (SDA) mission from Low-Earth Orbit (LEO).

The next Alpha mission, a demonstration launch of a climate smallsat for NASA, presently hopes to launch before the end of the year, though more likely early next year.

Capitalism in space: Firefly, a company that just two years ago had gone into bankruptcy, tonight successfully launched their new Alpha rocket into orbit on its second test launch. The screen capture to the right shows the rocket 1:48 minutes into flight, its first stage still firing.

A final 2nd stage engine burn has completed, and we now have confirmation of deployment of the payload satellites. My sources tell me that the second stage under-performed, putting the satellites into a 223x283km orbit, rather than the planned 300km orbit, which will shorten the lifespan of the smallsats. As this was a test launch, not an operational one, this issue does not to my mind make the launch a failure.They reached orbit and the satellites were successfully deployed.

Thus, Firefly now joins SpaceX, Rocket Lab, ULA, Virgin Orbit, and Northrop Grumman as an operational American commercial rocket companies. Astra had been operational, but it has stepped down as it builds a new rocket.

The leaders in the 2022 launch race:

43 SpaceX
41 China
12 Russia
7 Rocket Lab
6 ULA

American private enterprise now leads China 61 to 41 in the national rankings, and is tied with the entire world combined, 61 to 61.

Firefly will try again to complete the first successful launch of its Alpha rocket tonight from Vandenberg Space Force Base.

Last night they attempted twice to launch, the first aborting about 4 minutes before launch, the second aborting at T-0, with the first stage engine’s actually igniting and then shutting down.

I have embedded the live stream below. The launch window opens at 12:01 am (Pacific) and lasts two hours, giving them time for at least two launch attempts, should an abort occur on the first attempt.

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UPDATE: After a first abort about T-minus 4 minutes at around midnight, the launch team quickly recycled for a new launch at 12:52 am. At T-0 the rocket then aborted at launch.

There is still more than an hour in the launch window, so assuming they can rapidly pin down the cause of the abort, another attempt is possible, though unlikely. CONFIRMED: They will try again tomorrow, with the same launch window.

Though frustrating, these repeated launch attempts are actually wonderful real time training for Firefly’s launch team. The rocket is still in good condition, and they get to practice analyzing a situation under pressure and acting quickly to move forward.

Capitalism in space: Firefly will once again attempt to complete the first successful launch of its Alpha rocket tonight, with the launch scheduled for 12:01 am (Pacific) from Vandenberg Space Force Base. The launch window lasts two hours, so if they have an abort for a minor fixable reason there is a good chance they will still be able to cycle around and try again.

I have embedded below the live feed from Everyday Astronaut, which begins at around 10 pm (Pacific), two hours before the launch.

This will be their second attempt, with the first failing one year ago when one engine in the first stage shut down prematurely due to a loose connection. They attempted to launch this second rocket for the first time earlier this month, but had to scrub due to weather.

The rocket carries five small satellites, including one, Serenity, that was built by BtB reader (and supporter) Joe Latrell, builder of cubesats in a shop behind his garage.
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UPDATE: September 12th launch scrubbed due to weather. No word on when the next launch attempt will be scheduled.

Original post about September 11th scrub:
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After making two attempts, engineers at Firefly yesterday finally scrubbed the launch of their Alpha rocket, rescheduling the next attempt for today with a four hour launch window opening at 3 pm (Pacific).

Firefly has yet to make orbit. Their first launch attempt last year of Alpha failed when one first stage engine shut down prematurely due to a loose connection.

If you wish to watch the launch, I will embed the live stream below, once it goes live later today.

UPDATE: I have embedded the live stream below, with it beginning at 1:30 pm (Pacific).
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Capitalism in space: Firefly Aerospace, which hopes to do the first launch of its new Alpha rocket sometime this spring, has won another launch contract, this time with General Atomics to put an Earth science satellite in orbit in ’22.

The other contracts:

In December, the company won a NASA Venture Class Launch Services launch contract valued at $9.8 million to launch two sets of cubesats into polar orbits. It won a $93.3 million contract from NASA’s Commercial Lunar Payload Services program Feb. 4 for the 2023 launch of the company’s Blue Ghost lander carrying NASA payloads. That lander will be launched on another company’s rocket rather than Alpha.

Like all new rockets, the first launch will be highly risky. If successful however it will add one more launch company to the smallsat market, and encourage a further drop in the cost of getting such smallsats into orbit.

Capitalism in space: Firefly Aerospace today released video footage showing the first successful static fire test of the first stage of its Alpha rocket.

I have embedded one of the videos, showing the test from multiple camera angles, below the fold.

The test is very impressive, and suggests strongly that they are on schedule to meet their target launch date for their first orbital test flight sometime between November ’20 and May ’21. It also suggests that this dark horse smallsat rocket company, once considered dead after filing for bankruptcy, might actually beat to orbit its closest competitors, Virgin Orbit and Astra. The latter two have already completed their first launch attempts, but both ended in failure.

Regardless, it appears the race between these three rocket companies is tightening. In fact, I wouldn’t be surprised if all three achieve their first orbital launches in the six to eight months.
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