H-1 and H-1 Replica

Discussion in 'Aircraft Design / Aerodynamics / New Technology' started by macdonca, Mar 12, 2010.

Help Support HomeBuiltAirplanes Forum by donating:

  1. Mar 12, 2010 #1

    macdonca

    macdonca

    macdonca

    Active Member

    Joined:
    Jan 25, 2010
    Messages:
    29
    Likes Received:
    1
    Location:
    Nowhere
    Has their been any analysis done as to just how aerodynamic the Hughes H-1 and H-1 replica was?

    We all know the speeds that Hughes and Jim Wright had there aircraft up to..... with aruably limited power.

    Jim Wright stated that the propeller he had on his craft actually started to bog the plane down at higher RPM. Would a more powerful engine (r-2800 or possible retrofit to RR Merlin ) result in higher speeds for the H-1?
     
  2. Mar 14, 2010 #2

    Autodidact

    Autodidact

    Autodidact

    Well-Known Member

    Joined:
    Oct 21, 2009
    Messages:
    4,513
    Likes Received:
    799
    Location:
    Oklahoma
    A more powerfull engine will result in more speed (Rare Bear, Sea Furies with R-4360s and such) but the H-1 was not designed for substantially heavier and larger engines.

    One engine that the H-1 could have benefitted from, I think, would have been the Rolls-Royce Kestrel or possibly even it's later developement, the Rolls-Royce Peregrine.

    The Kestrel powered the Fury and Hart/Hind biplanes and the Peregrine powered the Westland Wirlwind fighter.

    With an 800 hp liquid cooled inline (Peregrine), the H-1 might have been quite a bit faster since it would have had less drag and more power.
     
  3. Mar 14, 2010 #3

    autoreply

    autoreply

    autoreply

    Moderator

    Joined:
    Jul 8, 2009
    Messages:
    10,732
    Likes Received:
    2,552
    Location:
    Rotterdam, Netherlands
    I don't know about the altitude performance (turbo's). It achieves comparable values to the Nemesis NXT, with a 1000 hp engine while the Nemesis has about half of that. So about 50% as efficient, which isn't surprising given the year of construction and the big radial in front.
     
  4. Mar 17, 2010 #4

    BruceS

    BruceS

    BruceS

    Member

    Joined:
    Apr 25, 2007
    Messages:
    18
    Likes Received:
    0
    If you haven't had the chance to see or hear the HR-1, here's a clip of Jim Wright doing a high speed fly by. This was his first flight after doing a major rebuild of the right wing and putting a new prop on, the right gear didn't fully extend on the previous landing. He's doing 340MPH at 75% power at the end of the runway in this pass, Jim was extremely pleased.

    It was during the rebuild that they discovered the previous prop was not built to their specs. The new one was and they felt that Howard's records could be easily broken now. One of Jim's goals was to break Howard Hughes records on the very same date that he set them.

    Hughes Racer Fly-by

    Bruce
    Pursuit of Flight
     

Share This Page

Group Builder
arrow_white