Virgin Galactic finally admitted to its engine troubles on Friday.
Virgin Galactic finally admitted to its engine troubles on Friday.
They have dumped the original engine, switching to a different engine design that the rumors have said they have been testing for the past year.
The company press release is here, with commentary here.
Though it is a good thing that the company has finally come clean and made the switch, they probably waited far too long to do it, as the problems with the old engine likely caused several years delay in their schedule, allowing other companies to catch up with them and thus losing the significant technological advantage that they once held.
Readers!
Please consider supporting my work here at Behind the Black. Your support allows me the freedom and ability to analyze objectively the ongoing renaissance in space, as well as the cultural changes -- for good or ill -- that are happening across America. Fourteen years ago I wrote that SLS and Orion were a bad ideas, a waste of money, would be years behind schedule, and better replaced by commercial private enterprise. Only now does it appear that Washington might finally recognize this reality.
In 2020 when the world panicked over COVID I wrote that the panic was unnecessary, that the virus was apparently simply a variation of the flu, that masks were not simply pointless but if worn incorrectly were a health threat, that the lockdowns were a disaster and did nothing to stop the spread of COVID. Only in the past year have some of our so-called experts in the health field have begun to recognize these facts.
Your help allows me to do this kind of intelligent analysis. I take no advertising or sponsors, so my reporting isn't influenced by donations by established space or drug companies. Instead, I rely entirely on donations and subscriptions from my readers, which gives me the freedom to write what I think, unencumbered by outside influences.
You can support me either by giving a one-time contribution or a regular subscription. There are four ways of doing so:
1. Zelle: This is the only internet method that charges no fees. All you have to do is use the Zelle link at your internet bank and give my name and email address (zimmerman at nasw dot org). What you donate is what I get.
2. Patreon: Go to my website there and pick one of five monthly subscription amounts, or by making a one-time donation.
3. A Paypal Donation or subscription:
4. Donate by check, payable to Robert Zimmerman and mailed to
Behind The Black
c/o Robert Zimmerman
P.O.Box 1262
Cortaro, AZ 85652
You can also support me by buying one of my books, as noted in the boxes interspersed throughout the webpage or shown in the menu above.
Virgin Galactic finally admitted to its engine troubles on Friday.
They have dumped the original engine, switching to a different engine design that the rumors have said they have been testing for the past year.
The company press release is here, with commentary here.
Though it is a good thing that the company has finally come clean and made the switch, they probably waited far too long to do it, as the problems with the old engine likely caused several years delay in their schedule, allowing other companies to catch up with them and thus losing the significant technological advantage that they once held.
Readers!
Please consider supporting my work here at Behind the Black. Your support allows me the freedom and ability to analyze objectively the ongoing renaissance in space, as well as the cultural changes -- for good or ill -- that are happening across America. Fourteen years ago I wrote that SLS and Orion were a bad ideas, a waste of money, would be years behind schedule, and better replaced by commercial private enterprise. Only now does it appear that Washington might finally recognize this reality.
In 2020 when the world panicked over COVID I wrote that the panic was unnecessary, that the virus was apparently simply a variation of the flu, that masks were not simply pointless but if worn incorrectly were a health threat, that the lockdowns were a disaster and did nothing to stop the spread of COVID. Only in the past year have some of our so-called experts in the health field have begun to recognize these facts.
Your help allows me to do this kind of intelligent analysis. I take no advertising or sponsors, so my reporting isn't influenced by donations by established space or drug companies. Instead, I rely entirely on donations and subscriptions from my readers, which gives me the freedom to write what I think, unencumbered by outside influences.
You can support me either by giving a one-time contribution or a regular subscription. There are four ways of doing so:
1. Zelle: This is the only internet method that charges no fees. All you have to do is use the Zelle link at your internet bank and give my name and email address (zimmerman at nasw dot org). What you donate is what I get.
2. Patreon: Go to my website there and pick one of five monthly subscription amounts, or by making a one-time donation.
3. A Paypal Donation or subscription:
4. Donate by check, payable to Robert Zimmerman and mailed to
Behind The Black
c/o Robert Zimmerman
P.O.Box 1262
Cortaro, AZ 85652
You can also support me by buying one of my books, as noted in the boxes interspersed throughout the webpage or shown in the menu above.
The first step is admitting there is a problem
The whole of the engine design is flawed. Just changing the solid fuel will not help much. It will never correct the real problem.
Adding He to the mix is not a solution either. Just a patch job.
By adding the oxidizer to the top of the engine away from the nozzle you create a situation in which the burn chamber is ever changing and changing in unpredictable ways.
I bet they added a few knock sensors to the side of the engine and tried adding He as needed to keep the vibrations down. Sort of like they add less or more fuel and change the ignition timing to keep knocks out of internal combustion car engines. It works but only to a point. While stopping knocks it lowers engine power.
Since VG has recently stated they will not be able to reach space even with the new engines I bet they found that out.
This could impact Dream Chaser as well. The company that makes it also makes the SS2 engines – and uses the same kind of engines on the DC. ….with issues they don’t like to admit to.
Well really, hybrids are a dump system. You kinda mix the problems with solids, liquids, and pressurized feed systems, with out really getting the best of any of them.