Polar diagram for Mosquito?

[Dave Boulter]

Hi,

Does anybody have a polar diagram for the Mosquito?

Thanks

--
-----------------------------------------------
http://www.sgi-extremelinux.com
The source of innovation and discoveryTM
-----------------------------------------------
|"Flying is learning to throw yourself at the ground, and....miss."
| --- Ford Prefect
| Dave Boulter
| Technology Solutions
| Director of Customer Services
| ICON
| Silicon Graphics
| Sydney Australia
|Email:
|Tel: +61.2.8875.9541
|Fax: +61.2.8875.9484

[root]

Dave Boulter wrote:
>
> Hi,
>
> Does anybody have a polar diagram for the Mosquito?
>
> Thanks
>
> --
> -----------------------------------------------
> http://www.sgi-extremelinux.com
> The source of innovation and discoveryTM
> -----------------------------------------------
> |"Flying is learning to throw yourself at the ground, and....miss."
> | --- Ford Prefect
> | Dave Boulter
> | Technology Solutions
> | Director of Customer Services
> | ICON
> | Silicon Graphics
> | Sydney Australia
> |Email:
> |Tel: +61.2.8875.9541
> |Fax: +61.2.8875.9484


Airspeed in km/h, sink speed in m/s, wing loading in kg/m²

Mosquito H-303 [IDA] (36.2)

D-1303
IDA
36.20
mps
70 0.69
75 0.65
80 0.63
85 0.63
90 0.63
95 0.64
100 0.67
105 0.71
110 0.75
115 0.80
120 0.85
125 0.92
130 0.99
135 1.07
140 1.15
145 1.24
150 1.34
155 1.45
160 1.57
165 1.70
170 1.84
175 1.99
180 2.16
185 2.33

Mosquito H-303B [IDA] (34)

D-1436
IDA
34.00
mps
70 0.65
75 0.65
80 0.62
85 0.61
90 0.63
95 0.65
100 0.68
105 0.71
110 0.76
115 0.81
120 0.87
125 0.93
130 1.00
135 1.08
140 1.17
145 1.28
150 1.40
155 1.53
160 1.65
165 1.77
170 1.91
175 2.04
180 2.19
185 2.33
190 2.51

[For Example John Smith]

The columns are kilometres per hour & metres per second?
70kph/0.69mps
75kph/0.65mps
etc
"root" > wrote in message
...
> Dave Boulter wrote:[i]
> >
> > Hi,
> >
> > Does anybody have a polar diagram for the Mosquito?
> >
> > Thanks
> >
> > --
> > -----------------------------------------------
> > http://www.sgi-extremelinux.com
> > The source of innovation and discoveryTM
> > -----------------------------------------------
> > |"Flying is learning to throw yourself at the ground, and....miss."
> > | --- Ford Prefect
> > | Dave Boulter
> > | Technology Solutions
> > | Director of Customer Services
> > | ICON
> > | Silicon Graphics
> > | Sydney Australia
> > |Email:
> > |Tel: +61.2.8875.9541
> > |Fax: +61.2.8875.9484
>
>
> Airspeed in km/h, sink speed in m/s, wing loading in kg/m²
>
> Mosquito H-303 (36.2)
>
> D-1303
> IDA
> 36.20
> mps
> 70 0.69
> 75 0.65
> 80 0.63
> 85 0.63
> 90 0.63
> 95 0.64
> 100 0.67
> 105 0.71
> 110 0.75
> 115 0.80
> 120 0.85
> 125 0.92
> 130 0.99
> 135 1.07
> 140 1.15
> 145 1.24
> 150 1.34
> 155 1.45
> 160 1.57
> 165 1.70
> 170 1.84
> 175 1.99
> 180 2.16
> 185 2.33
>
> Mosquito H-303B [IDA] (34)
>
> D-1436
> IDA
> 34.00
> mps
> 70 0.65
> 75 0.65
> 80 0.62
> 85 0.61
> 90 0.63
> 95 0.65
> 100 0.68
> 105 0.71
> 110 0.76
> 115 0.81
> 120 0.87
> 125 0.93
> 130 1.00
> 135 1.08
> 140 1.17
> 145 1.28
> 150 1.40
> 155 1.53
> 160 1.65
> 165 1.77
> 170 1.91
> 175 2.04
> 180 2.19
> 185 2.33
> 190 2.51

[Shawn]

root wrote:
> Dave Boulter wrote:
>[i]
>>Hi,
>>
>>Does anybody have a polar diagram for the Mosquito?
>>
>>Thanks
>>
>>--
>>-----------------------------------------------
>>http://www.sgi-extremelinux.com
>> The source of innovation and discoveryTM
>>-----------------------------------------------
>>|"Flying is learning to throw yourself at the ground, and....miss."
>>| --- Ford Prefect
>>| Dave Boulter
>>| Technology Solutions
>>| Director of Customer Services
>>| ICON
>>| Silicon Graphics
>>| Sydney Australia
>>|Email:
>>|Tel: +61.2.8875.9541
>>|Fax: +61.2.8875.9484
>
>
>
> Airspeed in km/h, sink speed in m/s, wing loading in kg/m²
>
> Mosquito H-303 (36.2)
>
> D-1303
> IDA
> 36.20
> mps
> 70 0.69
> 75 0.65
> 80 0.63
> 85 0.63
> 90 0.63
> 95 0.64
> 100 0.67
> 105 0.71
> 110 0.75
> 115 0.80
> 120 0.85
> 125 0.92
> 130 0.99
> 135 1.07
> 140 1.15
> 145 1.24
> 150 1.34
> 155 1.45
> 160 1.57
> 165 1.70
> 170 1.84
> 175 1.99
> 180 2.16
> 185 2.33
>
> Mosquito H-303B [IDA] (34)
>
> D-1436
> IDA
> 34.00
> mps
> 70 0.65
> 75 0.65
> 80 0.62
> 85 0.61
> 90 0.63
> 95 0.65
> 100 0.68
> 105 0.71
> 110 0.76
> 115 0.81
> 120 0.87
> 125 0.93
> 130 1.00
> 135 1.08
> 140 1.17
> 145 1.28
> 150 1.40
> 155 1.53
> 160 1.65
> 165 1.77
> 170 1.91
> 175 2.04
> 180 2.19
> 185 2.33
> 190 2.51

Flap settings? Turbulatoers?

[root]

Shawn wrote:
> ...
> Flap settings? Turbulatoers?

I don't have any info about that. Anyway in most flight manuals
for flapped gliders I have seen, there is only one polar (or zero)
for the whole speed range, the glider being assumed to be flown
in every part of this range with the "appropriate" flap setting.
I think it is a bad thing, as only from separate polars for each flap
setting can this appropriate flap setting be deduced, but things are
what they are.

[Shawn]

root wrote:
> Shawn wrote:
>
>>...
>>Flap settings? Turbulatoers?
>
>
> I don't have any info about that. Anyway in most flight manuals
> for flapped gliders I have seen, there is only one polar (or zero)
> for the whole speed range, the glider being assumed to be flown
> in every part of this range with the "appropriate" flap setting.
> I think it is a bad thing, as only from separate polars for each flap
> setting can this appropriate flap setting be deduced, but things are
> what they are.

I agree. Given no other information that's what I'd assume too. Do you
know if that data reflects the use of turbulators? My understanding of
Mosquito history is that once the need for turbulators was recognized it
significantly changed the performance and "personality" of the glider.

Shawn

[Lars P. Hansen]

The original flight manual has the usual single polar curve, based on the
glider being flown at optimum flap setting for any speed.

Having flown a Mosquito for more than a decade, I have often investigated
the question about turbolators. Every knowledgeable person I have spoken to,
has told me that the Wortmann FX-67-Kxxx wing section (also used for the
Nimbus, DG-200 and others) was never designed for turbolators. Adding them
will almost certainly do more harm than good. The section has to be designed
for turbs in order to gain from them.

Happy Soaring,
Lars Peder

--
Lars P. Hansen
Repalce numbers with post1.tele.dk for e-mail


"Shawn" <sdotherecurry@bresnananotherdotnet> wrote in message
...
> root wrote:
> > Shawn wrote:
> >
> >>...
> >>Flap settings? Turbulatoers?
> >
> >
> > I don't have any info about that. Anyway in most flight manuals
> > for flapped gliders I have seen, there is only one polar (or zero)
> > for the whole speed range, the glider being assumed to be flown
> > in every part of this range with the "appropriate" flap setting.
> > I think it is a bad thing, as only from separate polars for each flap
> > setting can this appropriate flap setting be deduced, but things are
> > what they are.
>
> I agree. Given no other information that's what I'd assume too. Do you
> know if that data reflects the use of turbulators? My understanding of
> Mosquito history is that once the need for turbulators was recognized it
> significantly changed the performance and "personality" of the glider.
>
> Shawn

[Robert Ehrlich]

"Lars P. Hansen" wrote:
>
> The original flight manual has the usual single polar curve, based on the
> glider being flown at optimum flap setting for any speed.
>
One may wonder where this kind of beautiful continuous polar comes from,
except if the glider has a continously movable flap lever. With the
usual disposition of a small number of discrete settings, the polar
should at least exhibit a kink when the setting changes.

[Shawn]

Robert Ehrlich wrote:
> "Lars P. Hansen" wrote:
>
>>The original flight manual has the usual single polar curve, based on the
>>glider being flown at optimum flap setting for any speed.
>>
>
> One may wonder where this kind of beautiful continuous polar comes from,
> except if the glider has a continously movable flap lever. With the
> usual disposition of a small number of discrete settings, the polar
> should at least exhibit a kink when the setting changes.

Marketing department?

[For Example John Smith]

Funny, I'd always made the assumption that the polar published by the mfr.
was for a single flap setting, otherwise they'd be even flatter around the
best LD point.

Dick Johnson's review of the Mosquito says that best LD @ 0 flaps is @ 50kts
and with flaps at the -1 setting best you get the same LD at about 55kts.
http://www.ssa.org/Johnson/29-1979-08.pdf

Intersting reading by Dick about flaps in general and PIKs in particular
here: http://www.sli-institute.ac.uk/~bob/Facts_About_Flaps.pdf

"Shawn" <sdotherecurry@bresnananotherdotnet> wrote in message
...
> root wrote:
> > Shawn wrote:
> >
> >>...
> >>Flap settings? Turbulatoers?
> >
> >
> > I don't have any info about that. Anyway in most flight manuals
> > for flapped gliders I have seen, there is only one polar (or zero)
> > for the whole speed range, the glider being assumed to be flown
> > in every part of this range with the "appropriate" flap setting.
> > I think it is a bad thing, as only from separate polars for each flap
> > setting can this appropriate flap setting be deduced, but things are
> > what they are.
>
> I agree. Given no other information that's what I'd assume too. Do you
> know if that data reflects the use of turbulators? My understanding of
> Mosquito history is that once the need for turbulators was recognized it
> significantly changed the performance and "personality" of the glider.
>
> Shawn