4-seater

I was referring to the German Blanik.

--
Bert Willing

ASW20 "TW"


"Janusz Kesik" a écrit dans le message de
news: ...

U¿ytkownik "Bert Willing"
napisa³ w wiadomo¶ci ...
Urban legend ?

Not at all. There was an SZD design which consisted of two SZD-9 Bocian
fuselages, each with left or right wing appropriatly, and the
'mid-section'
between the fuselages where the tested airfoils were used. The design was
a
flying laboratory for testing of new airfoils characteristics. I believe
that only one or two places were occupied in flight, the rest was used by
the in-flight testing equipment.

Regards,


--
Janusz Kesik
Poland
to reply put my name.surname[at]gazeta.pl
-------------------------------------
See Wroclaw (Breslau) in photography,
The XIX Century, the Festung Breslau, and photos taken today.
http://www.wroclaw.dolny.slask.pl

U¿ytkownik "Bert Willing"
napisa³ w wiadomo¶ci ...
I was referring to the German Blanik.

I know, only the idea of 4 seater connect these two gliders, I just wanted
to continue thread, but didn't follow the story of Blanik reminded by You.

JK

On Wed, 24 Nov 2004 13:38:44 UTC, "Janusz Kesik"
wrote:

: Not at all. There was an SZD design which consisted of two SZD-9 Bocian
: fuselages, each with left or right wing appropriatly, and the 'mid-section'
: between the fuselages where the tested airfoils were used.

Sounds a wee bit like the Slingsby type 27, though that was a two
seater and was never fabric covered or flown. Still managed to get
called "The Black Widow" ...

Ian

--

I recall a recent discussion about the desirability of a 4-place glider for
the ride business. The subject came up after stuffing two not so smallish
people into the back seat of a 2-32 and sending them on a ride over the
Rockies.

The majority view was that the probability of one of the three paying
passengers getting airsick and ruining it for the other two was just too
high. I'm not too sure about that. A 4-place, 25 meter span ride glider
might be a money maker.

Bill Daniels

"Bert Willing" wrote in
message ...
Urban legend ?

--
Bert Willing

ASW20 "TW"


"cernauta" a écrit dans le message de
news: ...
(Nyal Williams) wrote:

A friend keeps insisting that a 4-place glider was built at one time.
Can anyone verify, identify, or point to a picture?

Somebody built a 4 place glider with twin fuselages. It was based on
Blanik parts. A center section, two outside wings, two fuselages and
tails.
I believe it was built by a German Blanik repair station.

Aldo Cernezzi

The idea of a joyride machine with multiple places was discussed
at our club a year back and some design ideas tossed around ,
the concensus was something like the DG505 wings attached to a
light tube and fabric fuse with either a triangle seat pattern or a
4 seater star pattern.
This concept was emailed to the owner of DG and the answer came back
that DG had discussed this very idea for a limited production run
but the engineering loads on the fuselage wing junction were very
high and would take a lot of redesigning to get it to work and secondly
the DG505 wingset were simply not strong enough to take those loads.
A Nimbus4D or an ASH25 wingset maybe?
gary
"Bill Daniels" wrote in message
news:wy0pd.141192$HA.53129@attbi_s01...
I recall a recent discussion about the desirability of a 4-place glider for
the ride business. The subject came up after stuffing two not so smallish
people into the back seat of a 2-32 and sending them on a ride over the
Rockies.

The majority view was that the probability of one of the three paying
passengers getting airsick and ruining it for the other two was just too
high. I'm not too sure about that. A 4-place, 25 meter span ride glider
might be a money maker.

Bill Daniels

"Bert Willing" wrote in
message ...
Urban legend ?

--
Bert Willing

ASW20 "TW"


"cernauta" a écrit dans le message de
news: ...
(Nyal Williams) wrote:

A friend keeps insisting that a 4-place glider was built at one time.
Can anyone verify, identify, or point to a picture?

Somebody built a 4 place glider with twin fuselages. It was based on
Blanik parts. A center section, two outside wings, two fuselages and
tails.
I believe it was built by a German Blanik repair station.

Aldo Cernezzi

A usable 4-seat ride glider would have to be engineered from a clean sheet
of paper. It would have to be rugged enough to survive years of stuffing
members of the general public into the seats.

Since it would be large, it would have to remain assembled which likely
means tied outside. I would insist on soft, shock absorbing landing gear.
A self launcher would make good sense in this role.

A 25 meter span would provide very good performance while introducing a lot
of people to soaring and making money for the business providing the rides.
I hope DG keeps thinking along these lines.

Bill Daniels


"goneill" wrote in message
...
The idea of a joyride machine with multiple places was discussed
at our club a year back and some design ideas tossed around ,
the concensus was something like the DG505 wings attached to a
light tube and fabric fuse with either a triangle seat pattern or a
4 seater star pattern.
This concept was emailed to the owner of DG and the answer came back
that DG had discussed this very idea for a limited production run
but the engineering loads on the fuselage wing junction were very
high and would take a lot of redesigning to get it to work and secondly
the DG505 wingset were simply not strong enough to take those loads.
A Nimbus4D or an ASH25 wingset maybe?
gary
"Bill Daniels" wrote in message
news:wy0pd.141192$HA.53129@attbi_s01...
I recall a recent discussion about the desirability of a 4-place glider
for
the ride business. The subject came up after stuffing two not so
smallish
people into the back seat of a 2-32 and sending them on a ride over the
Rockies.

The majority view was that the probability of one of the three paying
passengers getting airsick and ruining it for the other two was just too
high. I'm not too sure about that. A 4-place, 25 meter span ride
glider
might be a money maker.

Bill Daniels

"Bert Willing" wrote in
message ...
Urban legend ?

--
Bert Willing

ASW20 "TW"


"cernauta" a écrit dans le message de
news: ...
(Nyal Williams) wrote:

A friend keeps insisting that a 4-place glider was built at one time.
Can anyone verify, identify, or point to a picture?

Somebody built a 4 place glider with twin fuselages. It was based on
Blanik parts. A center section, two outside wings, two fuselages and
tails.
I believe it was built by a German Blanik repair station.

Aldo Cernezzi

Just some 'back of the envelope' calculations for a '2+2' seating glider.
(No controls in the back seats.)

Start with the need for 600 Kg cockpit payload. Assume that the best
composite materials and construction techniques are used. That would
suggest a GW of 1000 Kg. Further assume a 25 meter span and 30 Kg/sq. M
wing loading. That yields a wing area of 33.3 Sq. Meters and an aspect
ratio of 18.75. That gives good spar depth to carry the weight.

With retractable gear, flaps and winglets that would suggest ~45:1 L/D and a
min sink of about .55 M/Sec. If flown with a cockpit load of 300 Kg the min
sink would be less.

This is easily within the state-of-the-art. Every commercial ride operator
in the world would want one and so would some wealthy individuals and clubs.
Say, maybe a market for 300+ gliders?

Bill Daniels

"goneill" wrote in message
...
The idea of a joyride machine with multiple places was discussed
at our club a year back and some design ideas tossed around ,
the concensus was something like the DG505 wings attached to a
light tube and fabric fuse with either a triangle seat pattern or a
4 seater star pattern.
This concept was emailed to the owner of DG and the answer came back
that DG had discussed this very idea for a limited production run
but the engineering loads on the fuselage wing junction were very
high and would take a lot of redesigning to get it to work and secondly
the DG505 wingset were simply not strong enough to take those loads.
A Nimbus4D or an ASH25 wingset maybe?
gary
"Bill Daniels" wrote in message
news:wy0pd.141192$HA.53129@attbi_s01...
I recall a recent discussion about the desirability of a 4-place glider
for
the ride business. The subject came up after stuffing two not so
smallish
people into the back seat of a 2-32 and sending them on a ride over the
Rockies.

The majority view was that the probability of one of the three paying
passengers getting airsick and ruining it for the other two was just too
high. I'm not too sure about that. A 4-place, 25 meter span ride
glider
might be a money maker.

Bill Daniels

"Bert Willing" wrote in
message ...
Urban legend ?

--
Bert Willing

ASW20 "TW"


"cernauta" a écrit dans le message de
news: ...
(Nyal Williams) wrote:

A friend keeps insisting that a 4-place glider was built at one time.
Can anyone verify, identify, or point to a picture?

Somebody built a 4 place glider with twin fuselages. It was based on
Blanik parts. A center section, two outside wings, two fuselages and
tails.
I believe it was built by a German Blanik repair station.

Aldo Cernezzi

"Bert Willing" wrote in
message ...
Urban legend ?

Apparently not. I found a picture of it on the net at :
http://users.skynet.be/nestofdragons/weird_09.htm On the same page you will
see several twins of similar concept, including a twin Ercoupe that looks
like the result of a nasty mid-air.

Vaughn

Ok :-)))

--
Bert Willing

ASW20 "TW"


"Vaughn Simon" a écrit dans le message de
news: ...

"Bert Willing" wrote in
message ...
Urban legend ?

Apparently not. I found a picture of it on the net at :
http://users.skynet.be/nestofdragons/weird_09.htm On the same page you
will
see several twins of similar concept, including a twin Ercoupe that looks
like the result of a nasty mid-air.

Vaughn

Hi,

Apparently not. I found a picture of it on the net at :

Considering the recent discussion on placement of tow hooks. How was
this contraption launched?

Ciao, MM
--
Marian Aldenhövel, Rosenhain 23, 53123 Bonn.
Fon +49 228 624013, Fax +49 228 624031.
http://www.marian-aldenhoevel.de
"Geiz ist doof"