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Author Topic: Joined-wing and box-wing aircraft  (Read 39647 times)

Offline hesham

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Re: Joined-wing and box-wing aircraft
« Reply #75 on: October 07, 2014, 03:55:47 pm »
Thank you my dear Skyblazer.

Offline hesham

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Re: Joined-wing and box-wing aircraft
« Reply #76 on: December 24, 2014, 05:16:27 am »
Hi,


here is a group of joined-wing and box-wing aircraft;


 1- Folded wing transport aircraft
 2- V/STOL aircraft
 3- Joined-wing space shuttle
 4- NASA agricultural aircraft
 5- Fighter
 6- Turboprop airliner


http://arc.aiaa.org/doi/abs/10.2514/3.45285?journalCode=ja

Offline .Tyler H

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Re: Joined-wing and box-wing aircraft
« Reply #77 on: December 24, 2014, 11:19:31 am »
I remember seeing a joined wing version of the S-3 that was supposedly going to be a replacement for the E-2 Hawkeye...  In searching Boeing E-X on Google I have found nothing, does anyone have any more information on it?

Attached is a picture from the book it is in.

Tyler
« Last Edit: December 24, 2014, 11:21:05 am by .Tyler H »

Offline hesham

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Re: Joined-wing and box-wing aircraft
« Reply #78 on: December 24, 2014, 01:28:29 pm »
Hi Tylor,


welcome aboard,and for Boeing EX,please see;


http://www.secretprojects.co.uk/forum/index.php/topic,2024.0.html

Offline hesham

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Re: Joined-wing and box-wing aircraft
« Reply #79 on: December 01, 2015, 03:36:07 pm »
Hi,

here is the White Diamond box-wing aircraft;

http://www.gibbsguides.com/Article26_White_Diamond_Part2.htm

Offline Skyblazer

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Re: Joined-wing and box-wing aircraft
« Reply #80 on: December 04, 2015, 09:46:42 am »
here is a group of joined-wing and box-wing aircraft;
 4- NASA agricultural aircraft

Aircraft #4 is the Rutan Model 58 Predator (or maybe 59, never knew which was which), developed for ATAC and later replaced with the more conventional Model 120, or Predator 480.

More on the Model 58/59: http://stargazer2006.online.fr/aircraft/pages/predator.htm
More on the Model 120: http://stargazer2006.online.fr/aircraft/pages/predator480.htm

Offline hesham

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Re: Joined-wing and box-wing aircraft
« Reply #81 on: December 04, 2015, 01:23:39 pm »
Many thanks my dear Skyblazer.

Offline Avimimus

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Re: Joined-wing and box-wing aircraft
« Reply #82 on: August 09, 2017, 07:15:12 pm »
So I OCR'd the text on the Siberian Aeronautical Institute S-2 and machine translated it. There may be plenty of errors:

Quote
В конце 90 годов в СибНИА был разработан аэродинамический проект высокоэффективного многоцелевого
самолета-амфибии с утраченным взлетом и посадкой. предназначенного для эксплуатации в различных
регионах земного шара. в том числе в районах. характеризующихся экстремальными климатическими
условиями. За основу проекта принята перспективная аэродинамическая схема замкнутого крыла с несущим
корпусом (патент СССР 1790529, приоритет СибНИА от 25 мая 1990 года)

Эта схема является развитием идей Главного конструктора Роберта Бартини, разработавшего и создавшего
ряд оригинальных самолетов различного назначения. В компоновках этих самолетов были использованы
перспективные решения. в частности применение несущего Фюзеляжа. а таюке интеграция силовой
установки с планером летательного аппарата для повышения его эффективности

Компоновка самолета характеризуется наличием несущего Фюзеляжа. представляющее собой крыло малото
удлинения, с пристыюванной :: его бортам системой крыльев большою удлинения. замкнутых в районе
концевых частей консолей. использованием специальной формы иесущето фюзеляжа удается улучшить
взлетно-посадшные характеристики за счет значительного благоприятного влияния близости подстилающей
поверхности. повысить безопасность при потере скорости. обеспечить эюсллуатации с водной. грунтовой.
заснеженной и ледовой поверхности. При этом используемый обьем внутри фюзеляжа значительно больше.
чем на самолетах обычной схемы.

Сочлененная схема крыльев позволяет использовать систему крыльев с большим удлинением. чем
обеспечиваются значительно более высокий уровень азродинамического качества (Kmax : 24) и требуемые
характеристики устойчивости и управляемости на всех режимах полета самолета без весовых потерь.

На самолете используется толкающий воздушный винт. расположенный в кольцевом обтекателеТакая
компоновка силовой установки позволяет создать чистую аэродинамическую Форму с максимальным уровнем
комфорта в пассажирском салоне и кабине фюзеляжа. повысить КПД винта на расчетном режиме. а также
обеспечить безопасность. удобство обслуживания и эксплуатации на земле и водной поверхности.

Таким образом в проект самолета-амфибии С-2 Касатка заложен комплекс перспективных технических
решений и идей Это позволяет обеспечить самолету высокий уровнь лето-технических. эксплуатационных и
экологических характеристик. высокую конкурентное пособность на рынке легких мносоцепевых самолетов

на базе данного проекта рассматриваются различные варианты модификаций“ пассажирский (до 6 человек).
комфортабельный административный (на 2-4 человека). транспортный (до 660 кг груза). а таюке вариант
безаэродромного базирования с шасси на воздушной подушке

In summary:

SibNIA S-2 "Kasatka" was designed by a team headed by Robert Bartini. It was designed to have good take-off and landing performance, and be able to operate in isolated and arctic conditions, as well as to have an amphibious capability.

It featured a lifting fuselauge which would lead to better performance in ground effect and have a relatively high volume. The box-wing design would allow higher aspect ratios and stiffness for a given weight. The pusher configuration was intended to provide easy access for maintenance, protect the propeller from debris, and insulate the passengers from the engine compartment.

Versions featuring 2-4 seats, 6 seats, or 660 kg cargo were considered. Air cushion systems were also considered as a replacement for landing gear.
« Last Edit: August 15, 2017, 09:48:08 pm by Avimimus »

Offline hesham

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Re: Joined-wing and box-wing aircraft
« Reply #83 on: August 10, 2017, 04:13:23 am »
Thank you Avimimus.

Offline hesham

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Re: Joined-wing and box-wing aircraft
« Reply #84 on: January 02, 2019, 07:54:46 am »

Offline riggerrob

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Re: Joined-wing and box-wing aircraft
« Reply #85 on: January 03, 2019, 11:51:14 am »
Here's what I believed to be a CG concept drawing for a joined-wing glider. Picked this up from a foreign language forum which was using this to explain the joined-wing concept. There was no reference to this glider design perhaps members in know can assist.


—————————————————————-

That CGI seems to have a propeller spinning in front of the nose. RD87E vaguely reminds us of Burt Rutan’s tiny tandem-winged Quickie airplane. The single-seat Quickie flew on a mere 18 horsepower!

Makes us wonder what would have happened if Burt Rutan had chosen to experiment with box wings??????
A few of Rutan’s designs (e.g. Voyager) had parallel wings joined by fuselage booms,  it those don’t really count as box-wings.
« Last Edit: January 03, 2019, 11:53:36 am by riggerrob »

Offline riggerrob

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Re: Joined-wing and box-wing aircraft
« Reply #86 on: January 03, 2019, 12:05:27 pm »
I remember seeing a joined wing version of the S-3 that was supposedly going to be a replacement for the E-2 Hawkeye...  In searching Boeing E-X on Google I have found nothing, does anyone have any more information on it?

Attached is a picture from the book it is in.

Tyler
————————————————————

They planned to install fixed radar receivers along the wings’ leading and trailing edges, converting the entire wing(s) into one giant radar antenna. They hoped the new antenna configuration would work as well as the rotating-radar discs on top of Grumman E-2, Boeing 707 AWACS, some Lockheed P-3s, etc.

Offline ucon

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Re: Joined-wing and box-wing aircraft
« Reply #87 on: January 09, 2019, 01:43:46 am »
Mr. Avimimus, are you sure that Bartini was connected with Kasatka-2 project?)))

Offline hesham

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Re: Joined-wing and box-wing aircraft
« Reply #88 on: January 09, 2019, 04:27:30 am »
Mr. Avimimus, are you sure that Bartini was connected with Kasatka-2 project?)))

My dear Ucon,what is your knowledge about this ?.

Offline martinbayer

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Re: Joined-wing and box-wing aircraft
« Reply #89 on: January 09, 2019, 07:18:25 am »
I remember seeing a drawing of a Harrier fuselage combined with a joined wing in a book or journal decades ago, but I haven't been able to find or track down a reference - is anybody aware of a corresponding illustration source?

Martin
« Last Edit: January 09, 2019, 08:10:07 am by martinbayer »
Would be marching to the beat of his own drum, if he didn't detest marching to any drumbeat at all so much.