Prospective Piloted Transport System
Encyclopedia
PPTS
Description
Role: Low earth orbit transportation, possibly to the Moon, or Mars
Crew: 6
Pressurized Volume: 33 m3
Mass: 12,000 kg
Endurance: 200 days (docked to Station)
Operator: Roskosmos
Carrier Rocket: Rus-M
Rus-M
Rus-M was a proposed launcher design which was intended to become Russia's main launch vehicle for manned spaceflight after 2018, and an integral part of the Prospective Piloted Transport System which included a new manned spacecraft being developed to replace the Soyuz.Rus-M was being developed by...

Launch site: Vostochny Cosmodrome
Vostochny Cosmodrome
The Vostochny Cosmodrome is a planned Russian spaceport, to be located at 51 degrees north in the Amur Oblast, in the Russian Far East. It is intended to reduce Russia's dependency on the Baikonur Cosmodrome, which is located in Kazakhstan...

Major Contractors: RKK Energia


PPTS (Prospective Piloted Transport System or Perspektivnaya Pilotiruemaya Transportnaya Sistema), unofficially called Rus, is a project being undertaken by the Russian Federal Space Agency
Russian Federal Space Agency
The Russian Federal Space Agency , commonly called Roscosmos and abbreviated as FKA and RKA , is the government agency responsible for the Russian space science program and general aerospace research. It was previously the Russian Aviation and Space Agency .Headquarters of Roscosmos are located...

 to develop a new-generation manned spacecraft. Its official name is Pilotiruemyi Transportny Korabl Novogo Pokoleniya or PTK NP meaning New Generation Piloted Transport Ship. The goal of the project is to develop a new-generation spacecraft to replace the current Soyuz
Soyuz spacecraft
Soyuz , Union) is a series of spacecraft initially designed for the Soviet space programme by the Korolyov Design Bureau in the 1960s, and still in service today...

 which was developed by the former Soviet Union
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

. The PPTS project was started following the failed plans by Russia to co-develop Crew Space Transportation System (CSTS, until middle 2006 named ACTS) with Europe. Following this the Russian Federal Space Agency ordered the local space industry to finalize proposals for the new manned spacecraft.

History

When the Kliper
Kliper
Kliper is a partly reusable manned spacecraft, proposed by RSC Energia.Designed primarily to replace the Soyuz spacecraft, Kliper has been proposed in two versions: as a pure lifting body design and as spaceplane with small wings...

 project was revealed to the public, the officials admitted that despite its pragmatic and cost-conscious design, it had little chance of materializing without large financial assistance from Russia and abroad. Hence, the Russian Space Agency and RKK Energia launched an effort to market Kliper to international partners.

With NASA
NASA
The National Aeronautics and Space Administration is the agency of the United States government that is responsible for the nation's civilian space program and for aeronautics and aerospace research...

 out of the equation due its Orion spacecraft, which was a part of the Constellation Program, Russia turned to Europe as a prospective partner. Previously, ESA officials had inquired whether they could be part of the Constellation Program of the United States, however they received a negative response. Hence, Europe decided to join the Russians to co-develop a new-generation manned spacecraft. But, ESA insisted on a joint design rather than the Russian-designed Kliper. As a result, the joint Russian/European CSTS
CSTS
CSTS or ACTS is a human spaceflight system proposal. It was originally a joint project between the European Space Agency and the Russian Space Agency , but is now solely an ESA project...

 project came into being.

CSTS
CSTS
CSTS or ACTS is a human spaceflight system proposal. It was originally a joint project between the European Space Agency and the Russian Space Agency , but is now solely an ESA project...

 had completed an initial study phase, which lasted for 18 months from September 2006 to spring 2008, before the project was shut down before an ESA member state conference in November 2008. ESA decided to part ways with the CSTS
CSTS
CSTS or ACTS is a human spaceflight system proposal. It was originally a joint project between the European Space Agency and the Russian Space Agency , but is now solely an ESA project...

 project as it wanted to pursue a crewed version of its Automated Transfer Vehicle
Automated Transfer Vehicle
The Automated Transfer Vehicle or ATV is an expendable, unmanned resupply spacecraft developed by the European Space Agency . ATVs are designed to supply the International Space Station with propellant, water, air, payload and experiments...

(ATV).

At the same time the Russian Space Agency had repeatedly received proposals from Moscow-based Khrunichev
Khrunichev
Khrunichev State Research and Production Space Center is a Moscow-based producer of spacecraft and space-launch systems, including the Proton and Rokot rockets. The company's history dates back to 1916, when an automobile factory was established outside Moscow...

 enterprise to develop a new-generation manned spacecraft based on the TKS spacecraft
TKS spacecraft
TKS spacecraft was a Soviet spacecraft design in the late 1960s intended to supply the military Almaz space station. The spacecraft was designed for manned or autonomous cargo resupply use...

 that would be launched on the new Angara launch Vehicle. Citing the requirement to start work on a new manned spacecraft, Russia decided to go forward with the project all by itself.

By the first quarter of 2009, Roskosmos had finalized its requirements for the next-generation manned spacecraft and had received proposals from both RKK Energia and Khrunichev
Khrunichev
Khrunichev State Research and Production Space Center is a Moscow-based producer of spacecraft and space-launch systems, including the Proton and Rokot rockets. The company's history dates back to 1916, when an automobile factory was established outside Moscow...

 enterprise. This was the actual beginning of the PPTS project. The agency was finally ready to name the prime developer of the vehicle. Formally, only two organizations which were practically capable of developing manned space vehicles competed in the government tender to build the new spacecraft—RKK Energia in Korolev and Moscow-based Khrunichev enterprise.

Although Roskosmos has officially remained tight-lipped about the project, a number of Russian officials made statements hinting about various stages of the project. On January 21, 2009, the head of Russian space agency Roskosmos, Anatoly Perminov
Anatoly Perminov
Dr. Prof. Anatoly Nikolayevich Perminov is a Russian rocket scientist and a mechanical engineer. He served as the General Director of Russian Federal Space Agency in 2004–2011.-Career:...

, told Rossiyskaya Gazeta, a Russian newspaper, that Russia would likely proceed with independent development of the next-generation manned spacecraft. According to Perminov, the agency and its main research and certification center—TsNIIMash—had already conducted an expanded meeting of the Scientific and Technical Council, NTS, examining follow-on transport systems, including the next-generation manned ship. It would be followed by a government tender to select a developer for the new vehicle. The new spacecraft would be expected to enter service within a time frame of the Orion spacecraft, however a more detailed development plan would be ready with the preliminary design of the vehicle in the middle of 2010, Perminov said.

In the first quarter of 2009, Roskosmos released requirements which were used in the development of the Technical Assignment to the industry working on the PPTS project. The preliminary development of the project was expected to take place from March 2009 until June 2010 at the estimated cost of around 800,000,000 rubles ($24 million). The work apparently covered only an Earth-orbiting version of the spacecraft, while laying the foundation for later lunar-orbiting spacecraft, or even a Mars-bound crew vehicle.

The agency's general requirements asked the industry to develop a vehicle of "foreign" standards in its technical capabilities and cost, while at the same time using existing technologies as much as possible.

Preliminary design

Roskosmos has envisioned several versions of the spacecraft.

The Earth-orbiting version of the ship would have a mass of 12 tonnes and carry a crew of six, along with no less than 500 kg of cargo. It would be able to fly 30-day-long autonomous missions, or a year-long mission, while docked to the ISS in the orbit, with the inclination 51.6 degrees, and to the future Russian space station launched from Vostochny
Vostochny Cosmodrome
The Vostochny Cosmodrome is a planned Russian spaceport, to be located at 51 degrees north in the Amur Oblast, in the Russian Far East. It is intended to reduce Russia's dependency on the Baikonur Cosmodrome, which is located in Kazakhstan...

 into a 51.8-degree orbit.

The lunar version would weigh 16.5 tonnes, have four seats, and be capable of delivering and bringing back 100 kg of cargo. It would be able to fly 14-day missions to orbit around the Moon, or stay docked to the lunar orbital station
Lunar Orbital Station
The Lunar Orbital Station is a planned Russian space station in orbit around the Moon. The design was revealed at a conference at the Gagarin Cosmonaut Training Center in Star City. It is one of the two parts of the planned Russian lunar infrastructure, the other part being a base on the surface...

, LOS, for up to 200 days.

The unmanned cargo version of the vehicle would be required to carry no less than 2,000 kg to Earth orbit, and return at least 500 kg back to the planet's surface.

As of March 2009, the agency extended the accuracy of the crew capsule landing on the Russian territory to 10 kilometers, while directing the developers to continue work on various modes of high-precision landing. Emergency escape and landing capabilities were mandated for every phase of the mission and had to provide the survivability of the crew until the arrival of the rescue and recovery teams.

The vehicle, like Soyuz
Soyuz spacecraft
Soyuz , Union) is a series of spacecraft initially designed for the Soviet space programme by the Korolyov Design Bureau in the 1960s, and still in service today...

, would be wingless and be able to conduct fully automated and manual docking, and have enough propulsion capabilities during transport missions to dock and re-dock with orbital stations, low-orbital platforms, unmanned spacecraft, and modules, and then to provide for the safe return of the reentry
Atmospheric reentry
Atmospheric entry is the movement of human-made or natural objects as they enter the atmosphere of a celestial body from outer space—in the case of Earth from an altitude above the Kármán Line,...

 vehicle to Earth. The reentry capsule could only employ environmentally safe propellants during the atmospheric phase of the flight. Roskosmos has reserved the option of making the crew module of the spacecraft
Spacecraft
A spacecraft or spaceship is a craft or machine designed for spaceflight. Spacecraft are used for a variety of purposes, including communications, earth observation, meteorology, navigation, planetary exploration and transportation of humans and cargo....

 reusable, reckoning that a cone-shaped capsule could fly up to 10 missions during its 15-year lifespan.

It has been suggested that the vehicle will only use rocket thrusters
Rocket engine
A rocket engine, or simply "rocket", is a jet engineRocket Propulsion Elements; 7th edition- chapter 1 that uses only propellant mass for forming its high speed propulsive jet. Rocket engines are reaction engines and obtain thrust in accordance with Newton's third law...

 to slow itself down during its landing unlike the Soyuz vehicle which also uses a parachute
Parachute
A parachute is a device used to slow the motion of an object through an atmosphere by creating drag, or in the case of ram-air parachutes, aerodynamic lift. Parachutes are usually made out of light, strong cloth, originally silk, now most commonly nylon...

.

Launch vehicle

A formal industry-wide tender for the development of the manned launch vehicle to launch PPTS was apparently initiated at the beginning of 2009.

Although the agency has delayed the announcement of the winner, many unofficial sources in Russia maintain that TsSKB Progress, based in Samara and KB Mashinostroenia, will lead the development of the new rocket.

It is believed that the launch vehicle will feature a three-booster first-stage, each booster equipped with powerful RD-180 engines, burning a mix of liquid oxygen
Liquid oxygen
Liquid oxygen — abbreviated LOx, LOX or Lox in the aerospace, submarine and gas industries — is one of the physical forms of elemental oxygen.-Physical properties:...

 and kerosene
Kerosene
Kerosene, sometimes spelled kerosine in scientific and industrial usage, also known as paraffin or paraffin oil in the United Kingdom, Hong Kong, Ireland and South Africa, is a combustible hydrocarbon liquid. The name is derived from Greek keros...

. The engine was originally developed by Moscow-based NPO Energomash
NPO Energomash
NPO Energomash “V. P. Glushko” is a Russian manufacturer originated from design bureau, which focuses primarily on the development and production of liquid propellant rocket engines. NPO Energomash is based in Moscow, with satellite facilities in Samara, Perm, and St. Petersburg, and employs close...

 for the US Atlas 5 rocket and its performance to date has been impressive.

The second stage of the new manned rocket would probably sport a pair of RD-0124 engines, currently in use on the Soyuz-2 rocket. Thus, both stages of the future launcher would be equipped with newest existing power plants, greatly reducing the cost and the risk to the overall project.

See also

  • Crew Space Transportation System
    CSTS
    CSTS or ACTS is a human spaceflight system proposal. It was originally a joint project between the European Space Agency and the Russian Space Agency , but is now solely an ESA project...

  • Kliper
    Kliper
    Kliper is a partly reusable manned spacecraft, proposed by RSC Energia.Designed primarily to replace the Soyuz spacecraft, Kliper has been proposed in two versions: as a pure lifting body design and as spaceplane with small wings...

  • Colonization of the Moon
    Colonization of the Moon
    The colonization of the Moon is the proposed establishment of permanent human communities on the Moon. Advocates of space exploration have seen settlement of the Moon as a logical step in the expansion of humanity beyond the Earth. Recent indication that water might be present in noteworthy...

  • Colonization of Mars
    Colonization of Mars
    The colonization of Mars by humans is the focus of speculation and serious study because the surface conditions and availability of water on Mars make it arguably the most hospitable planet in the solar system other than Earth...


External links

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