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  1. jaceb

    Discussion on circumferential non-uniform temperature distribution and deformation in aero-engines

    to realize how sensitive this information is i just point you to the fact that only one of listed by me companies is using ACC (active clearace control) system in their engines and this company is finding this system as a factor giving them significant edge over competition
  2. jaceb

    Discussion on circumferential non-uniform temperature distribution and deformation in aero-engines

    what you are asking for is strictly controlled, properietary information, part of specific DPs, directly related to engine performance - you will have no access to this untill you will be a member of inner circle of trust at GE, PW, RR or Safran.... not just emplyee, but you have to work for a...
  3. jaceb

    A little sanity ...

    finally....
  4. jaceb

    Boeing Drawings

  5. jaceb

    Boeing Drawings

    in Boeing (seocond name "organized mess") it is not so simple: 1) there is no uniform numbering system within company (even within specific program - for example it is differen for 747 classic, 747-400 and 747-8), 2) drafting manual you are mentioning have evolwed and is "program unique", and...
  6. jaceb

    BOOM lives up to its name

    is it means basic rule to avoid project crash to not develop engine and airframe simultaniously is gone in this case? anyway we are talking about dozens of billions of USD for relatively small size compan - yes that sounds realistic...
  7. jaceb

    Engine Shock Loading

    I'm assuming that from mechanical standpoint, definition is/will be pretty the same. For electric motors major difference are requirements for insulation resistance - and this is really tricky part for HV electric propulsion in aviation (HV in aviation term for typical electrician is in fact MV...
  8. jaceb

    Engine Shock Loading

    yes it is...
  9. jaceb

    Engine Shock Loading

    "A normal shock load is defined as having a 10 g acceleration in a given direction over a period of typically 11 ms. This assures the LRU will survive takeoff, landing, aerodynamic gusts, or any other normal aircraft maneuver."
  10. jaceb

    Avionic- GPS NAV solution

    i don't think so - garmin's specification is not mentioning anything similar to your requirements. Also what comes to my mind is fact that linking remote GPS sensor to the GTN will give you very limited level of system redundancy. For remote option, like mentioned by you Genesys or GPS 3000...
  11. jaceb

    Good wording to state fabrication based on model geometry.

    "FOR MENUFACTURING REFER TO CAD DATA" SIMPLIEST "MANUFACTURE PER CATIA MODEL" GD&T SYMBOLS AND NUMBERS CAN BE ADDED IN 3D MODEL - AT LEAST IN PRIME TYPE SOFTWARE LIKE CATIA AND SIEMENS NX OF COURSE IF YOU CAN AFFORD ON RESULTANT PRICE TAG :D AS MENTIONED BEFORE...
  12. jaceb

    Hi Lok / Collar Selection

    you may use KFN305 nuts instead collars - it should meet your expectations
  13. jaceb

    CF6-80C2 Nacelle - Deviated Repairs from OEM SRM/CMM

    fully agree - Continental Airlines can say something about that....
  14. jaceb

    CF6-80C2 Nacelle - Deviated Repairs from OEM SRM/CMM

    My suggestion is to contact directly nacelle manufacturer with this issue - probably it will be STE/MRAS in Baltimore in this specific case...
  15. jaceb

    optimism d'jour ...

    it proves not only his limitless optimism but also lack of imagination. I would say he didn't see showstoppers it may be understood as an invitation for another A380 style adventure - money does not count for us (EU will pay) only important factor is fun... Probably you remember transparent...
  16. jaceb

    Pencils.

    i'm using "pica" made pencils and markers - for the pencils they are offering inserts in different colors and compatible with different materials, my favorite form of their marker is long reach one for deep holes marking - good enough to be used as a sole tool of it's kind - really nice...
  17. jaceb

    Control surfaces electric actuators stops.

    both solutions may be used - there is no restriction to use either of this mentioned by you. Everything comes to the cost/reliability/maintainability trade.
  18. jaceb

    A350 ?

    rb1957, yes - ailerons drop off for take off, and i think as well this is part of low speed control laws in general, but it is my guess only, i haven't been involved in control system design for this project
  19. jaceb

    A350 ?

    is member of the wing's FTE subassembly - fixed trailing edge - is not movable part
  20. jaceb

    A350 ?

    Yes it is part of FTE structure. Laminar composite panel with thickness similar to the frontal armor of MBT. Initially it was planned as a sandwich panel as other one components of FTE but gentlemen from Toulouse keep reducing it's size and finally we have realized that there is no room for...

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