Rolladen-Schneider LS7

LS7
General information
TypeStandard-class sailplane
National originGermany
ManufacturerRolladen-Schneider
Designer
Number built164
History
First flight1987

The Rolladen-Schneider LS7 is a high-performance Standard Class single-seat sailplane produced by Rolladen-Schneider Flugzeugbau GmbH from 1988 to 1993.

Design and development

The LS7 was developed as the successor to the LS4, one of the most successful gliders ever produced.

In a departure from the design philosophy of the LS4, Rolladen-Schneider set out to design the LS7 as an uncompromised competition machine, seeking the highest performance possible with the technology of the time. Designer Wolf Lemke specified a highly laminar wing profile and developed a high aspect ratio wing. Carbon fibre was extensively used in the construction, along with aramid fibre, to ensure enough strength in spite of slender structural elements and increased loadings. The aileron drive bellcranks were entirely concealed within the wings, with a mere 30mm of usable height at the trailing edge.

The LS7 prototype flew for the first time in the autumn of 1987, and serial production started in 1988. Winglets were introduced in 1991, yielding the LS7-WL. Many earlier LS7s were converted to this standard. Production ended in 1993 with only 164 aircraft having been built.

The LS7 did not enjoy the commercial and sporting success its advanced features seemed to warrant. Its intrinsically higher thermalling speeds proved to be a handicap in the gaggling environment typical of competition gliding.

Other gliders designed at about the same time following a similar design philosophy also revealed non-classic low-speed behaviour, e.g. the ASW 24 and the DG-600. These gliders climb better in thermals when flown significantly above stall speed and achieve the best cross-country speeds at relatively moderate wing loadings, factors which were not fully understood at first. Although experience over the years has shown these gliders to be equal to any when flown by an expert hand, manufacturers nonetheless have returned to more conservative wing profiles and (mostly) lower aspect ratios.

The LS7 was superseded by the LS8, which is currently manufactured at DG Flugzeugbau GmbH. The LS7 remains a much prized glider among private owners for its excellent performance and very nimble flight characteristics.

The LS7 has more recently begun to achieve competition success in the Club Class, placing 1st in the 2019 European Gliding Championships, Slovakia.

Design features

  • Wings: spar and shell of foam / carbon reinforced plastic sandwich
  • Ailerons: synthetic foam / aramid reinforced plastic sandwich. Ailerons extend over fully half the wing span.
  • Horizontal stabilizer: sparless sandwich of carbon reinforced plastic
  • Elevator: carbon/aramid reinforced plastic
  • Automatic connections for ailerons, airbrakes, elevator and water ballast valves
  • Integral Teflon and PET film seals on all control surface gaps.
  • Water ballast system: one unvented ballast bag per wing located before the spar, valve and dumping orifice on the lower wing shell by the wing root. Glass reinforced ballast tank installed in the tail fin for correction of centre of gravity shifts due to wing ballast.

Specifications

General characteristics

  • Crew: One pilot
  • Capacity: 170 kg (374 lb) water ballast, plus 5.5 kg (12 lb) in tail
  • Length: 6.66 m (21 ft 10 in)
  • Wingspan: 15.00 m (49 ft 3 in)
  • Height: 1.33 m (4 ft 4 in)
  • Wing area: 9.7 m2 (104 sq ft)
  • Aspect ratio: 23.1
  • Empty weight: 234 kg (513 lb)
  • Gross weight: 486 kg (1,070 lb)

Performance

  • Maximum speed: 270 km/h (170 mph, 150 kn)
  • Maximum glide ratio: ca. 43
  • Rate of sink: 0.63 m/s (124 ft/min)

See also

Related lists

References

Read other articles:

Bursa MicrosoftTipetoko aplikasi dan digital distribution platform (en) Versi pertama26 Oktober 2012; 9 Tahun yang lalu.Versi stabilWindows 10: 22301.1401.15.0 Karakteristik teknisSistem operasiWindows 8, Windows Server 2012, Windows 8.1, Windows Server 2012 R2, Windows 10, Windows 10 Mobile, Windows Server 2016, Windows Server 2019, Windows 11, Windows Sever 2022, Xbox.Informasi pengembangPengembangMicrosoft CorporationPenerbitBursa Microsoft Informasi tambahanSitus webapps.microsoft.com...

 

Pavel Filonov Pavel Nikolayevich Filonov (Rusia: Па́вел Никола́евич Фило́нов) (8 Januari 1883-3 Desember 1941) merupakan seorang pelukis, penulis, dan pengarang berkebangsaan Rusia. Filonov dilahirkan di Moskwa pada tahun 1883. Pada tahun 1897 dia pindah ke St. Petersburg. Galeri lukisan Heads (1910). Filonov considered this painting to be his first real work. A Man and a Woman (Adam dan Hawa) (1912–1913). The Banquet of Kings (1913). The Formula of Contemporary Ped...

 

Artikel ini sebatang kara, artinya tidak ada artikel lain yang memiliki pranala balik ke halaman ini.Bantulah menambah pranala ke artikel ini dari artikel yang berhubungan atau coba peralatan pencari pranala.Tag ini diberikan pada Desember 2023. Esther VilarEsther Vilar (1977)Lahir16 September 1935 (umur 88)Buenos Aires, ArgentinaPekerjaanPenulis, psikolog, dokter, sosiologKebangsaanGerman, ArgentinaPendidikanUniversitas Buenos AiresKarya terkenalThe Manipulated Man (1971)PasanganKl...

Seba Fernández Informasi pribadiNama lengkap Sebastián Bruno Fernández MiglierinaTanggal lahir 23 Mei 1985 (umur 38)Tempat lahir Montevideo, UruguayTinggi 166 cm (5 ft 5 in)Posisi bermain PenyerangInformasi klubKlub saat ini NacionalKarier senior*Tahun Tim Tampil (Gol)2004–2006 Miramar Misiones 75 (21)2007–2008 Defensor Sporting 32 (15)2008–2010 Banfield 61 (12)2010–2013 Málaga 80 (12)2013–2014 Rayo Vallecano 9 (1)2014– Nacional 1 (1)Tim nasional‡2006–...

 

Синелобый амазон Научная классификация Домен:ЭукариотыЦарство:ЖивотныеПодцарство:ЭуметазоиБез ранга:Двусторонне-симметричныеБез ранга:ВторичноротыеТип:ХордовыеПодтип:ПозвоночныеИнфратип:ЧелюстноротыеНадкласс:ЧетвероногиеКлада:АмниотыКлада:ЗавропсидыКласс:Пт�...

 

Pour les articles homonymes, voir Biva. Lucien BivaLucien Biva, artiste peintre.Naissance 13 août 18781er arrondissement de ParisDécès Octobre 1965 (à 87 ans)New YorkNationalités américainefrançaiseActivité PeintreFormation École nationale supérieure des beaux-artsÉcole nationale supérieure des arts décoratifsmodifier - modifier le code - modifier Wikidata Lucien Biva est un peintre franco-américain né le 13 août 1878 à Paris et mort en octobre 1965 à New York aux...

1972 aircraft hijacking Delta Air Lines Flight 841N817E, the DC-8 involved in the hijacking, at Orlando International Airport in 1966.HijackingDateJuly 31 – August 2, 1972SummaryHijackingSiteUnited States, AlgeriaAircraftAircraft typeDouglas DC-8-51OperatorDelta Air LinesRegistrationN817EFlight originDetroit Metropolitan Airport, Michigan1st stopoverLogan International Airport, Massachusetts2nd stopoverHouari Boumediene Airport, Algiers, AlgeriaDestinationMiami International Airpor...

 

The S6 district lies within the City of Sheffield, South Yorkshire, England. The district contains 180 listed buildings that are recorded in the National Heritage List for England. Of these, one is listed at Grade I, the highest of the three grades, four are at Grade II*, the middle grade, and the others are at Grade II, the lowest grade. The district is in the north west of the city of Sheffield, and covers the areas of Bradfield, Dungworth, Hillsborough, Loxley, Malin Bridge...

 

Universitas BhayangkaraRektorDrs. Suharto, SH, M.Hum Universitas Bhayangkara Surabaya adalah sebuah perguruan tinggi di Surabaya yang dikelola oleh Yayasan Brata Bhakti Daerah Jawa Timur. Fakultas Fakultas Ilmu Sosial dan Ilmu Politik Administrasi Negara, menjadi Prodi Administrasi Publik Ilmu Komunikasi Fakultas Hukum Ilmu Hukum S1 Magister Hukum S2 Fakultas Ekonomi Manajemen S1 Magister Manajemen S2 Akuntansi Ekonomi Pembangunan Fakultas Teknik Teknik Elektro Teknik Sipil Teknik Informatika...

Stefano Visconti (berlutut). Gambar yang diambil dari makamnya. Stefano Visconti (wafat 4 Juli 1327) merupakan anggota Istana Visconti yang memerintah Milan dari abad ke-14 s/d 15. Ia merupakan putra Matteo I Visconti. Pada tahun 1318 ia menikahi Valentina Doria, dengan siapa ia memiliki 3 orang anak: Matteo, Galeazzo dan Bernabò, yang memimpin bersama-sama di Milan setelah kematiannya.

 

Cet article est une ébauche concernant un aéroport chinois. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Aéroport de Manzhouli Xijiao满洲里西郊机场Mǎnzhōulǐ Xijiāo Jīchǎng Localisation Pays Chine Ville Manzhouli Coordonnées 49° 34′ 00″ nord, 117° 19′ 48″ est Informations aéronautiques Code IATA NZH Code OACI ZBMZ Type d'aéroport Civil Gestionnaire HNA...

 

Para ver la página de información de Wikipedia sobre Wikidata, véase Wikipedia:Wikidata. Wikidata Información generalDominio https://wikidata.org/Tipo Proyecto de contenido de WikimediaWiki semánticaWiki con conversión de scriptSitio web MediaWikiBase de conocimientoBase de datos en líneaGrafo de conocimientoProyecto crowdsourcingEntidad que se representa a sí mismaContenido abiertoIdiomas disponibles PlurilingüeEn español NoSoftware Wikibase y MediaWikiLicencia CC0CC-BY-SA 3.0CC B...

«KKK» redirige aquí. Para la sociedad secreta filipina, véase Katipunan. Ku Klux Klan Manifestación del Ku Klux Klan en Virginia, 1922Fundación siglo XIX, después de la guerra de SecesiónFundador Nathan Bedford ForrestLugar de origen  Estados UnidosActividades delictivas Asesinato Linchamiento Ataques incendiarios Atentados con explosivos Disturbios Violaciones HurtoOperacional Desde 1865 hasta ser formalmente disuelta en 1870 por el presidente republicano Ulysses S. Grant, ...

 

House elections for the 45th U.S. Congress 1876–77 United States House of Representatives elections ← 1874 & 1875 June 5, 1876 – March 1877[a][b] 1878 & 1879 → All 293 seats in the United States House of Representatives147 seats needed for a majority   Majority party Minority party   Leader Samuel J. Randall James A. Garfield Party Democratic Republican Leader's seat Pennsylvania 3rd Ohio 19th Last election 180 se...

 

Painting by Titian Portrait of Giacomo DoriaArtistTitianLocationAshmolean Museum, Oxford Portrait of Giacomo Doria is a portrait of Giacomo Doria by Titian,[1] painted in 1533–1535 and now in the Ashmolean Museum.[2] References ^ Portrait of Giacomo Doria Titian Wholesale Oil Painting China Picture Frame 94760. www.fineart-china.com. Retrieved 16 November 2023. ^ Jones, Jonathan (23 September 2000). Giacoma Doria, Titian (c. 1531). The Guardian. ISSN 0261-3077. Retrieve...

COVID-19 pandemicConfirmed deaths per 100,000 population,[1][note 1] as of 20 December 2023   555+  100–555  18–100  3.3–18  0.6–3.3  0.1–0.6  <0.1  No deaths or no dataDiseaseCOVID-19Virus strainSARS-CoV-2SourceProbably bats, possibly via pangolins[2][3][4]LocationWorldwideFirst outbreakChina[5]Index caseWuhan, Hubei, China30°37′11″N 114°15′28�...

 

County in Oklahoma, United States Not to be confused with Texas County, Missouri. County in OklahomaTexas CountyCountyTexas County Courthouse in Guymon (2012)Location within the U.S. state of OklahomaOklahoma's location within the U.S.Coordinates: 36°45′N 101°29′W / 36.75°N 101.48°W / 36.75; -101.48Country United StatesState OklahomaFounded1907Named forTexasSeatGuymonLargest cityGuymonArea • Total2,049 sq mi (5,310 km2) ...

 

  Paranthropus aethiopicus Rango temporal: Pleistoceno inferior PreЄ Є O S D C P T J K Pg N ↓ Cráneo negroTaxonomíaReino: AnimaliaFilo: ChordataClase: MammaliaOrden: PrimatesFamilia: HominidaeTribu: HomininiGénero: ParanthropusEspecie: P. aethiopicus(Arambourg & Coppens, 1968)[1]​Sinonimia Paraustralopithecus aethiopicus Arambourg & Coppens, 1968 Homo (Australopithecus) aethiopicus Olson, 1985[2]​ [editar datos en Wikidata] Paranthropus aethiopicu...

Bifluorure Structure de l'ion bifluorure. Identification No CAS 18130-74-0 PubChem 85305403 ChEBI 30480 Propriétés chimiques Formule HF2 Masse molaire[1] 39,004 75 ± 7,0E−5 g/mol H 2,58 %, F 97,42 %, Unités du SI et CNTP, sauf indication contraire. modifier  L'ion bifluorure (ou hydrogénodifluorure) désigne l'anion de formule HF2−. Cet ion présente la plus forte liaison hydrogène connue, avec une longueur de liaison H-F de 1...

 

Archaeological museum in Brading, England Brading Roman VillaSite museum housing the mosaics and wallsLocation within Isle of WightGeneral informationLocationBradinggrid reference SZ598862CountryUnited KingdomCoordinates50°40′22″N 1°09′16″W / 50.6728°N 1.1544°W / 50.6728; -1.1544Construction started1st centuryDemolished4th century Brading Roman Villa was a Roman courtyard villa which has been excavated and put on public display in Brading on the Isle of Wig...