Re: Re: F1D in Cat 1 Ceiling

From: <RLBailey_at_care4free.net>
Date: Fri, 21 Mar 2008 10:07:14 -0000

Mark

You may well be right. Generally I don't find much change needed from one day to the next unless it's a big change in conditions. One has to decrease the tail incidence slightly in the salt mine compared with a surface site; why, I don't know. See you tomorrow.

Bob
----- Original Message -----
  From: markbenns
  To: Indoor_Construction_at_yahoogroups.com
  Sent: Tuesday, March 18, 2008 6:42 PM
  Subject: [Indoor_Construction] Re: F1D in Cat 1 Ceiling


  Bob

  You maybe correct but i do think the air conditions on day 2
  contributed to the lack of improvement in our times. Maybe your
  incidence was correct (not over elevated) for day 1 when more
  stable/buoyant?

  If you remember both of us had the dramatically change our pre load
  to effect the change, this also may well be just the poor air
  conditions.

  My wing was actually flying on my 4th string models stick & tailboom
  (not wanting to risk the trials model) but appeared to be very close
  to its predecessor (tipped wing). The prop was a new 19" 28deg.

  Mark

  --- In Indoor_Construction_at_yahoogroups.com, <RLBailey@...> wrote:
>
> Mark
>
> On chewing over the F1D flying, I strongly suspect that my model
  was flying overelevated. It seems that it can go too nose up,
  resulting in too much drag and the prop having to run faster despite
  the low flying speed. The let down is then liable to be rubbish since
  in effect the motor is too thin. You may have had the same trouble.
>
> It seems possible that this setup is inconsistent in behaviour from
  one flight to the next as if there might be more than one stable wing
  angle of attack for the same set up.
>
> I remember Tony Young at Chobham telling me many years ago that he
  had an A/2 with 2 flying speeds!
>
> What do you think?
>
> Bob
>
>
> Did you change the tail incidence when you put the nice new wing on?
>
> ----- Original Message -----
> From: markbenns
> To: Indoor_Construction_at_yahoogroups.com
> Sent: Monday, March 17, 2008 4:20 PM
> Subject: [Indoor_Construction] F1D in Cat 1 Ceiling
>
>
> Having flown full motors under a 25ft Ceiling for the first time
  i have
> to say its a nailbiting experience getting the models to fly upto
  the
> ceiling allow them to drop before the VP kicks in to take them
  back up
> again. It seems alien to fly like this but terribly impressive
  when it
> works if not a triffle nervy a few feet from the floor on the
  first
> decent.
>
> If you havent tried this rollercoaster give it a go its actually
  a real
> scream if not a bit fiddly.
>
>
>
>
>
> [Non-text portions of this message have been removed]
>



   

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Received on Mon Mar 24 2008 - 03:00:02 CET