TTS-IS

{{short description|Russian future very large wing-in-ground-effect, lifting-body cargo aircraft}}

{{Infobox aircraft

|name =TTS-IS

|image =

|caption =

|alt =

|aim = very large wing-in-ground-effect, lifting-body cargo aircraft

|requirement =

|issuer =

|service =

|value =

|initiated = 2017

|expected =

|proposals =

|prototypes =

|concluded =

|outcome =

|predecessors =

|successors =

|related =

}}

TTS-IS (Russian Тяжелый транспортный самолет интегральной схемы (ТТС-ИС), heavy transport aircraft integrated circuit (HTA-IC)){{Cite web | url=http://tsagi.com/pressroom/archive/2017/3185/ | title=TsAGI advanced projects to be demonstrated at MAKS-2017 - Archive - Press-center - TsAGI}} is a project by TsAGI for a very large wing-in-ground-effect, lifting-body cargo aircraft with a take-off weight of 1000 tons, a payload of 500 tons, with a flight range of over 6000 km, a cruising speed of 500 km / h.{{cite web|url=http://tsagi.com/pressroom/news/2912/|title=TsAGI specialists developing the concept of a cryogenic integrated-circuit heavy transport aircraft - News - Press-center - TsAGI|author=|date=|website=tsagi.com|access-date=26 December 2018}}{{cite web|url=https://www.popmech.ru/magazine/2017/175-issue/|title=№5 (175), Май 2017|author=|date=|website=Popmech.ru|access-date=26 December 2018}}{{cite web|url=https://newatlas.com/tsagi-blended-wing-heavy-transport-ground-effect-aircraft/47692/|title=Russian blended wing aircraft concept keeps on the down low|author=|date=2 February 2017|website=newatlas.com|access-date=26 December 2018}}{{cite web|url=https://www.stern.de/digital/technik/gigant-der-luefte---russland-will-das-groesste-lastflugzeug-der-welt-bauen-7312902.html|title=Russland will das größte Frachtflugzeug der Welt bauen|author=|date=4 February 2017|website=stern.de|access-date=27 January 2019}} Although the aircraft typically flies at {{convert|6|to|12|m|ft|abbr=off|0}} above water, ice, or ground to reduce drag, it is designed to take off and land at conventional airports, unlike most ground effect vehicles but similar to the Boeing Pelican. As with the Airbus A380 and the Boeing 747-8, the aircraft is designed to land at airports that meet the Aerodrome Reference Code code 4F standard of the International Civil Aviation Organization (ICAO). It is also notable for the use of liquefied natural gas (LNG) as its aviation fuel source, and for the use of intermodal containers that are standardized in train, ship, and truck freight instead of the smaller unit load devices that are common in air freight transportation.

Also called Heavy Cargo Aircraft with Lifting Body (HCA-LB), the aircraft is the result of work beginning in 2014 as a proposal by TsAGI under a Russian government contract. The HCA-LB was formally introduced to the public in January 2017, and it began wind tunnel testing in 2018.{{cite web|url=http://www.airrecognition.com/index.php/archive-world-worldwide-news-air-force-aviation-aerospace-air-military-defence-industry/global-defense-security-news/global-news-2018/october/4577-tsagi-starts-wind-tunnel-tests-with-hca-lb-heavy-cargo-aircraft-project.html|title=TsAGI starts wind tunnel tests with HCA-LB heavy cargo aircraft project|author=|date=|website=www.airrecognition.com|access-date=26 December 2018}} The aircraft is targeting for a service entry in the 2030s or later.{{cite AV media |publisher=DefenseWebTV |title=MAKS 2017 - Day 2: Russian Defense Industry's newest products |url=https://www.youtube.com/watch?v=e2gbVkc32TE |location=Zhukovsky International Airport, Moscow Oblast, Russia |people=Alexander Krustov, engineer, TsAGI aerodynamics department |date=July 20, 2017 |minutes=1 |medium=video |language=English}} It carries twenty-foot equivalent units (TEUs) in four rows of six containers side by side on the port and starboard parts of the aircraft, for a total capacity of 48 TEUs. The two cargo areas are separated by an insulated fuel tank stretching the length of the center fuselage, holding cryogenic liquefied natural gas (LNG). The HCA-LB is nominally powered by a row of four turboprop engines positioned behind the cargo, atop the fuselage in a pusher configuration, although the propulsion method will be investigated with greater detail in the future. The HCA-LB has a pi-tail empennage, with the twin vertical tails extending from near the back outer corners of the cargo sections. Outboard of the cargo sections are non-cargo bearing, shorter, thinner swept wings with downward-pointing wingtips.

The HCA-LB is similar in configuration to the Boeing Model 754.{{Cite web | url=https://secure.boeingimages.com/archive/Boeing-Model-754--Husky--Concept--1974-2JRSXLJ8X9Q1.html | title=Orange Logic - Boeing Model 754 "Husky" Concept, 1974}}{{Cite web|url=https://www.robertnovell.com/the-flying-fuselage-boeing-aircraft-and-a-man-named-burnelli-march-2-2018/|title = The Flying Fuselage, the Boeing 754 Husky, and a Man Named Burnelli – March 2, 2018 | Robert Novell}}