Russia’s Angara A5 Booster has Serious Flaw

Angara A5 launch (Credit: Khrunichev)

If you are among the millions of space enthusiasts who have been losing sleep over why Russia’s new Angara rocket hasn’t flown in more than four years, be prepared to snooze soundly again.

Rueters reports that engineers have found a flaw in the engine of the Angara A5 booster that could cause it to explode in flight.

The issue with the Angara A5 was brought to attention by scientists at rocket engine manufacturer Energomash in a paper ahead of a space conference later this month.

The paper, reported by RIA news agency on Friday and published online, said the engines of the Angara A5 could produce low frequency oscillations that could ultimately destroy the rocket.

A special valve had been fitted to mitigate the issue, but in some cases the oscillations continued, it said. Energomash did not immediately reply to a request for comment.

The Angara A5 rocket is the most powerful of a family of boosters designed to replace the Proton and other launch vehicles currently in the Russian arsenal. The Angara series is based around a common first stage core with additional strap-on stages.

The Reuters story says that Russian President Vladimir Putin is eager to see the rocket start launching more frequently because it is vital to the nation’s national defense.

The Angara 1.2PP rocket made the maiden flight test of the series on July 9, 2014. The booster flew a suborbital mission carrying a mass simulator from the Plesetsk Cosmodrome in Northern Russia.

Angara A5 flew was launched from Plesetsk five months later on Dec. 23, 2014. Using a Briz-M upper stage, the booster placed a mass simulator into geosynchronous orbit.

The Wikipedia page for Angara lists two launches of the Angara A1.2 and one flight of Angara A5P for 2019. There is one Angara A1.2 flight listed for 2020. However, it is not clear whether this schedule is still valid; it came from a schedule compiled in late 2017.

Russia to End Rockot Launches

Rockot launch vehicle

The end of the line is coming soon for Russia’s Rockot (Rokot) launch vehicle.

The converted intercontinental ballistic missile (ICBM) has only two more missions on its manifest before the program ends. In the months ahead, it will launch Sentinel 5P and Sentinel 3B Earth observation satellites for ESA and the European Commission.

The Sentinel 5P launch is set for June. Tass reports the Sentinel 3B flight will likely occur late this year or early 2018.

Rockot is being phased out in favor of the newer Angara-1.2 and Soyuz-2.1v boosters, which are capable of launching lighter payloads.

Rockot is a converted SS-19 ICBM built by Khrunichev and operated by Eurockot Launch Services. Flights are conducted from the Plesetsk Cosmodrome in Russia.

The three-stage booster is capable of lifting 1,950 kg (4,299 lb) in low Earth orbit (LEO) and 1,200 kilograms (2,646 lb) into sun synchronous orbit (SSO).

Rockot has launched 30 times, with 27 successes, two failures and one partial failure.

Dnepr launch vehicle. (Credit: ISC Kosmotras)

The retirement of Rockot ends Russia’s second program that used  in converted Soviet-era ICBMs as satellite launchers. In 2015, the country ended a joint program with Ukraine to convert SS-18 missiles into Denpr launch vehicles.

Dnepr was capable of lifting 4,500 kg (9,921 lb) to LEO and 2,300 kg (5,071 lb) to SSO.

The booster was launched 22 times, with 21 successes and one failure. The last flight was on March 25, 2015.

Dnepr launches were conducted out of Yasny in Russia and Baikonur in Kazakhstan.

Save

Save

Save

Save

ILS Announces First Commercial Angara 1.2 Launch Contract

Angara-1.2 launch vehicle on pad at Plesetsk. (Credit: Khrunichev)
Angara-1.2 launch vehicle on pad at Plesetsk. (Credit: Khrunichev)

RESTON, Va. (ILS PR) — International Launch Services (ILS) announces the first commercial Angara 1.2 launch contract was signed recently with Korea Aerospace Research Institute (KARI) for the launch of the Korea Multi-Purpose Satellite (Arirang) 6 also known as the KOMPSAT-6 satellite from the Plesetsk Cosmodrome in Northwestern Russia around 2020.

(more…)

Russians Doubt Reusable Boosters, Look to Phase Out Rockot Launches

Falcon 9 launch and landing. (Credit: SpaceX)
Falcon 9 launch and landing. (Credit: SpaceX)

Russia doesn’t seem overly impressed by the recent progress by SpaceX and Blue Origin in developing reusable launch vehicles. At according to TsNIIMash, which is the company’s main research institute.

“The economic feasibility of reusable launch systems is not obvious. First and foremost it will depend on how often launches will be made. At the moment it is hard to forecast which way the market of launch services will go when reusable space rockets become available. The designers are still to demonstrate the real costs of production and of making reusable stages for re-launching,” a TsNIIMash spokesman said.

(more…)

ILS to Market Angara 1.2 Launch Vehicle

Angara-1.2 launch vehicle on pad at Plesetsk. (Credit: Khrunichev)
Angara-1.2 launch vehicle on pad at Plesetsk. (Credit: Khrunichev)

RESTON, Va. (ILS PR) — International Launch Services (ILS), a global launch services provider for commercial satellite operators, is now actively marketing the Angara 1.2 launch vehicle. The Angara 1.2 vehicle will be available for launch in 2017.  Launches will be conducted from the Plesetsk Cosmodrome in Northern Russia. Augmented with the heavy-lift Proton vehicle, ILS now has capability to launch the entire range of satellite masses with both vehicles serving the market.

(more…)

Brazil Abandons Troubled Cyclone-4 Program

Cyclone 4 first and second stages. (Credit: Alcantara Space)
Cyclone 4 first and second stages. (Credit: Alcantara Space)

It looks like the rumors I reported last month are true. Brazil has decided to pull out of its joint program with Ukraine to launch satellites aboard Cyclone-4 boosters from the Alcantara Launch Center.

“It is an accumulation of issues,” said Petronio Noronha de Souza, AEB’s director of space policy and strategic investments. “There have been challenges on the budget issues, on the technological aspects, in the relationship between Brazil and Ukraine and in the actual market for export that would be available. So it is a combination of things.”

In an April 14 interview at the Latin America Aero and Defense, or LAAD, show here, Noronha de Souza said a formal government announcement, likely from the Ministry of Foreign Affairs, on the program’s stoppage was imminent.

(more…)

Russia Severing Ties With Ukraine on Dnepr, Zenit Launch Programs

Dnepr launch vehicle. (Credit: ISC Kosmotras)
Dnepr launch vehicle. (Credit: ISC Kosmotras)

Roscosmos officials made announcements this week that they would be suspending a joint program with Ukraine to launch Dnepr rockets and were no longer interested in buying Ukrainian Zenit boosters, deepening problems for that embattled nation’s space program and its struggling Yuzhmash factory.

Dneprs are converted SS-18 ballistic missiles that are converted into satellite launchers by Ukraine’s Yuzhmash launch vehicle manufacturer. The boosters are launched by the Moscow-based Moscow-based Kosmotras International Space Company, which is Russian-Ukrainian joint venture.

Russian media report three Dnepr launches scheduled this year will be carried out. However, The Moscow Times reports the future of the venture remains cloudy. It is possible the program will end, or Russia will convert the missiles to satellite launchers without Ukrainian participation.

(more…)

Angara 5 Launch Successful

First Angara-A5 launch vehicle rolled out to the pad. (Credit: Khrunichev)
First Angara A5 launch vehicle rolled out to the pad. (Credit: Khrunichev)

Russian media are reporting that the first flight test of the new Angara 5 booster was successful on Wednesday from the Plesetsk Cosmodrome.

The rocket consisted of five Universal Rocket Modules (URM) powered by RD-191 engines clustered as the first stage. Upper stages used on other boosters were to put a dummy payload into geostationary orbit. It’s not clear whether that effort was successful.

(more…)

Russia to Test Angara 5 on Dec. 23

First Angara-A5 launch vehicle rolled out to the pad. (Credit: Khrunichev)
First Angara A5 launch vehicle rolled out to the pad. (Credit: Khrunichev)

Russia hopes to cap off nearly 20 years of development work with a successful launch of its new Angara A5 rocket on Dec 23.

If all goes well, the new booster will place a dummy payload into orbit. It will be the first orbital launch for the Angara rocket, which was approved in 1995. A smaller version of the rocket, the Angara A1.2, conducted a suborbital flight test in July.

(more…)