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Chinese firm’s Lixun-1 ‘space tug’ eyes maiden flight in Q1 2027 after key propulsion tests_我的网站

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一 |     DUBAI, United Arab Emirates -- While revealing new details about one of the most famed CIA operations of all times — the spiriting out of six American diplomats who escaped the 1979 U.S. Embassy seizure in Iran — the intelligence agency for the first time has acknowledged something else as well.The CIA now officially describes the 1953 coup it backed in Iran that overthrew its prime minister and cemented the rule of Shah Mohammad Reza Pahlavi as undemocratic.Other American officials have made similar remarks in the past, but the CIA's acknowledgment in a podcast about the agency's history comes as much of its official history of the coup remains classified 70 years after the putsch. That complicates the public's understanding of an event that still resonates, as tensions remain high between Tehran and Washington over the Islamic Republic's rapidly advancing nuclear program, its aiding of militia groups across the Mideast and as it cracks down on dissent. The “CIA’s leadership is committed to being as open with the public as possible," the agency said in a statement responding to questions from The Associated Press. "The agency’s podcast is part of that effort — and we knew that if we wanted to tell this incredible story, it was important to be transparent about the historical context surrounding these events, and CIA’s role in it.”In response to questions from the AP, Iran's mission to the United Nations described the 1953 coup as marking “the inception of relentless American meddling in Iran’s internal affairs” and dismissed the U.S. acknowledgments.“The U.S. admission never translated into compensatory action or a genuine commitment to refrain from future interference, nor did it change its subversive policy towards the Islamic Republic of Iran,” the mission said in a statement. The CIA's podcast, called “The Langley Files” as its headquarters is based in Langley, Virginia, focused two recent episodes on the story of the six American diplomats' escape. While hiding at the home of the Canadian ambassador to Iran, a two-man CIA team entered Tehran and helped them fly out of the country while pretending to be members of a crew scouting for a made-up science fiction film.The caper, retold in the 2012 Academy Award-winning film “Argo” directed by and starring Ben Affleck, offered a dramatized version of the operation, with Affleck playing the late CIA officer Antonio “Tony” Mendez. The podcast for the first time identified the second CIA officer who accompanied Mendez, naming him as agency linguist and exfiltration specialist Ed Johnson. He previously only had been known publicly by the pseudonym “Julio.”“Working with the six — these are rookies," Johnson recounts in an interview aired by the podcast. "They were people who were not trained to lie to authorities. They weren’t trained to be clandestine, elusive.” But in the podcast, another brief exchange focuses on the 1953 coup.In it, CIA spokesman and podcast host Walter Trosin cites the claims of agency historians that the majority of the CIA’s clandestine activities in its history “bolstered” popularly elected governments.“We should acknowledge, though, that this is, therefore, a really significant exception to that rule,” Trosin says of the 1953 coup.CIA historian Brent Geary, appearing on the podcast, agrees.“This is one of the exceptions to that," Geary says.Seven decades later, the 1953 coup remains as hotly debated as ever by Iran, its theocratic government, historians and others. Iran's hard-line state television spent hours discussing the coup that toppled Prime Minister Mohammad Mosaddegh on its anniversary in June. In their telling, a straight line leads from the coup to the 1979 Islamic Revolution that ultimately toppled the fatally ill shah. It still fuels the anti-Americanism that colors decisions made by the theocracy, whether in arming Russia in its war on Ukraine or alleging without evidence that Washington fomented the recent nationwide mass protests targeting it. From the U.S. side, the CIA's hand in the coup quickly was revealed as a success of Cold War espionage, though historians in recent years have debated just how much influence the agency's actions had. It also led the CIA into a series of further coups in other countries, including Guatemala, where American clandestine action in 1954 installed a military dictator and sparked a 40-year civil war that likely killed some 245,000 people.That's led to an American political reappraisal of the 1953 CIA action in Iran. Then-Secretary of State Madeleine Albright acknowledged the U.S.' "significant role" in the coup in 2000. President Barack Obama, speaking in Cairo in 2009, described the CIA's work as leading to the “overthrow of a democratically elected Iranian government.” But largely absent from the discussion was the CIA itself. After years of conflicting versions of the coup both in public and classified papers, a member of the CIA's own in-house team of historians wrote a reappraisal of the operation in a 1998 paper titled “Zendebad, Shah!” in Farsi — or “Long Live the Shah!”But despite a series of American historical documents being made public, including a major tranche of State Department papers in 2017, large portions of that CIA reappraisal remain heavily redacted despite attempts to legally pry them loose by the George Washington University-based National Security Archive. That's even after pledges by former agency directors Robert Gates and James Woolsey Jr. in the 1990s to release documents from that coup and others engineered by the agency. Further complicating any historical reckoning is the CIA's own admission that many files related to the 1953 coup likely had been destroyed in the 1960s.“It’s wrong to suggest that the coup operation itself has been fully declassified. Far from it," said Malcolm Byrne of the National Security Archive. "Important parts of the record are still being withheld, which only contributes to public confusion and encourages myth-making about the U.S. role long after the fact.”。    

The general assembly of the Lixun-1 upper stage Photo: Courtesy of CAS Space
    The general assembly of the Lixun-1 upper stage Photo: Courtesy of CAS Space
The Lixun-1 upper stage Photo: Courtesy of CAS Space
    The Lixun-1 upper stage Photo: Courtesy of CAS Space
Lixun-1 upper stage, a versatile "space tug" developed by China's commercial space firm CAS Space, is scheduled to make its maiden flight in the first quarter of 2027 after completing a series of key propulsion-system tests, the developer and its chief designer told the Global Times on Tuesday.
The "tug" is designed to ferry satellites from one orbit to another and support missions ranging from constellation deployment to lunar exploration. 
While the main stages of a rocket carry payloads from the ground into an initial orbit, an upper stage takes over once the craft is in space. By repeatedly restarting its engine and changing orbit, Lixun-1 can deliver satellites to higher or different orbits, distribute multiple spacecraft to separate destinations during a single launch, or send probes onto trajectories toward the moon and beyond, Global Times learned from the developer.
Yang Haoliang, chief designer of the Lixun-1 upper stage, compared the system to a shuttle service. "If the regular stages of a launch vehicle are like a long-distance bus," - they carry the upper stage and satellites from Earth to a near-Earth parking orbit - the upper stage then takes over as a "space tug," carrying its satellite "passengers" onward to their designated orbital "stops," Yang explained. 
That capability can have a direct impact on how efficiently satellites are launched and operated, Yang said. If a satellite has to climb from an initial orbit to its final destination using its own engine, the process can consume a considerable amount of onboard propellant and reduce the fuel available during its operational life. An upper stage can instead perform that orbital transfer, helping conserve satellite fuel and potentially extend its service life.
It can also make one rocket launch do more work. Instead of releasing a batch of satellites into roughly the same orbit, Lixun-1 can repeatedly ignite its engine and maneuver between deployments, sending different satellites to different altitudes and inclinations. Yang said this would help accelerate constellation deployment while improving the efficiency of individual launches.
The practical ambitions behind the system are backed by a major technical milestone reached this month. In August, Lixun-1 completed its PV-001 integrated propulsion-system coordination firing test, during which the entire system operated smoothly for 566 seconds.  
Yang told the Global Times that the current Lixun-1 upper stage has a thrust of 20 kilonewtons and can achieve a specific impulse of 315 seconds, which he described as reaching an internationally leading level. The August firing covered the planned profile for the maiden mission, an important step before the system proceeds to flight testing.
The test was more than a demonstration of the engine itself. As an important system-level verification during development, it examined the coordination and engineering reliability of the engine pressurization system, propellant delivery system, propellant management system and servo-control system under the fully integrated configuration.
Of a series of tests that accumulated 5,211 seconds of firing time, the latest one focused on three core technologies: a high-thrust, high-performance 20-kilonewton upper-stage engine capable of multiple starts; balanced propellant delivery from multiple parallel tanks; and a highly reliable integrated electrical system. Their successful verification means Lixun-1 has completed its system-level testing and is ready to move into the flight-test phase, according to the developer.
Lixun-1 has been designed as a modular and generally adaptable upper stage rather than a system tied to only one rocket. It is intended to work with CAS Space's Kinetica-2 and Kinetica-2 heavy-lift variants as well as other launch vehicles, Yang said.
When paired with the Kinetica-2 family, Lixun-1 could significantly expand the rocket's mission range. For communications missions, it could deliver satellites to geosynchronous transfer orbit or even directly to geosynchronous orbit, conserving satellite propellant while supporting the deployment of high-throughput satellites and future 6G communications spacecraft.
For multi-satellite missions, the combination could distribute spacecraft to different orbital altitudes and inclinations during a single launch, potentially serving both low-Earth-orbit constellations and medium- or high-orbit payloads. For deep-space missions, it could place probes onto Earth-moon transfer trajectories and support lunar exploration, Yang said.
The upper stage is designed to be able to conduct more than 20 engine ignitions, autonomously plan orbital-transfer routes and operate under the vacuum and extreme temperature conditions of space. After completing payload deployment, it can also carry out orbital disposal maneuvers to reduce space-debris risks.
Yang said the Lixun-1 and Kinetica-2 combination is designed to cover the vast majority of commercial satellite launch requirements while retaining the ability to participate in major national space projects. More broadly, the upper stage forms part of CAS Space's effort to build launch capabilities reaching medium and high Earth orbits and deep space, extending the reach of China's commercial space sector toward higher orbits and more distant destinations.

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Published on:02:18:23