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  1. 5

    Raptor NG Discussion

    I've always enjoyed the howling of a Rolls-Royce RB211 at takeoff thrust. There's something satisfying about that healthy buzzsaw sound.
  2. 5

    10/23 Raptor Video

    The number of people willing to fork over cash exceeded his expectations.
  3. 5

    10/23 Raptor Video

    My goodness. I didn't know I wasn't allowed to post some facts about Muller's intentions, which were clearly spelled out on his website and in his videos. When he made those performance claims and produced videos that showed the Raptor's area ruled fuselage would be a feature of the aircraft...
  4. 5

    10/23 Raptor Video

    But in calling it a research aircraft, you attempted to deflect the bright light glaring on the failure. It is not. There has been no research since the Raptor went airborne. It has been a pinball game of bouncing from one failure to another, and the Band-Aids have barely been effective enough...
  5. 5

    10/23 Raptor Video

    Just substitute the Concorde.
  6. 5

    10/23 Raptor Video

    Kyle's invocation of Moore's law was more figurative than literal. The 66 year progression from the Wright Flyer to Apollo 11 was on loosely on par with the development of the transistor and IC when the exponential progress in aviation is considered.
  7. 5

    10/23 Raptor Video

    That "Research prototype one" moniker was birthed by you, one of your many attempts to normalize a project that has lurched from one aberration to another. Muller did not intend to make the current aircraft a test bed, it was billed as a complete proof of concept that would precede production...
  8. 5

    10/23 Raptor Video

    Lately there are many posts including such phrases as the California group, the new company, the investors, the production group, the new owners, stakeholders, etc. As far as I can tell, these references are to an entity which only exists because Muller has made repeated vague mentions of it...
  9. 5

    10/23 Raptor Video

    Indeed, as has been demonstrated repeatedly.
  10. 5

    10/23 Raptor Video

    The above post by 231TC correctly frames the main reason why the Raptor is proving to be a total failure as a functioning aircraft. It is dependant on surface ambient temperatures below 60° F to stay airborne, and even then it cannot be operated at throttle settings above 60% for more than a few...
  11. 5

    10/23 Raptor Video

    I believe Muller's mentions of California, investors, new company, etc. is just whistling past the graveyard. The present aircraft is so unsuitable as a finished design, it has no value at all.
  12. 5

    10/23 Raptor Video

    Again when presented with a critically important issue, this time being the engine lubrication system, Muller invents a hypothesis based on nothing more than poorly thought out conjecture. His comments about changing the oil viscosity illustrate his ignorance regarding the properties of...
  13. 5

    10/23 Raptor Video

    A huge vibration and rattle occurs at 4:38 as the throttle is advanced for the high speed taxi, as if there's a transient cylinder dropout.
  14. 5

    10/23 Raptor Video

    The resonant wing vibration as the throttle was pushed up was significant, to say the least. Something about the new engine or its installation is causing it. One would think the operator might be curious about the source. His explanation for the turbocharger aberration is another in a long...
  15. 5

    10/23 Raptor Video

    I suppose this could mean all of the V speed tests and other examinations of the Raptor's flight envelope that have been the subject of much discussion here were actually performed and recorded in Muller's extensive testing logs. Maybe he just decided not to include them on the videos.
  16. 5

    10/23 Raptor Video

    Good Lord.
  17. 5

    10/23 Raptor Video

    I Failing from heat according to the Professor. The buna o-rings in the redrive were replaced with Viton a couple of weeks ago. I considered the possibility it was pressure in the redrive causing it, and the blown out seal reinforced that.
  18. 5

    10/23 Raptor Video

    I have been thinking about this since his o-ring leaks began appearing, and it's possible that's what's happening. Unless he provided a properly sized inlet orfice, there's no restriction on the amount of oil that enters the device, because I believe it's fed by a -6 oil line.
  19. 5

    10/23 Raptor Video

    " The engine was spinning at just 65 times a second while the oil pressure dropped. No need to worry about damage, right? I suspect a reason other than decreasing air loads on the propeller caused it and the engine to stop.
  20. 5

    10/23 Raptor Video

    While I was watching the earlier video that showcased his new cowling openings, the thought occurred to me that using tape to secure those parts to the fuselage might be ill advised. You know, propeller and all that. But I suppose the light gauge aluminum will be successfully masticated if the...
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