Key Points and Summary – China’s CH-7 “Rainbow-7” is a new naval stealth drone designed for high-intensity warfare against peer adversaries.
It Has 1 Mission – Unlike older drones, its stealthy, flying-wing airframe is built to penetrate contested airspace and survive.
-Its primary mission is to act as the long-range “eyes” for the Chinese military, flying deep into enemy territory to locate high-value targets like aircraft carriers.
-This allows other platforms, such as bombers or warships, to launch precision missile strikes from a safe distance.
China’s CH-7: The Flying Wing ‘Rainbow’ Drone Designed to Hunt U.S. Carriers
The design emphasizes the critical importance of long-range platforms to overcome the “tyranny of distance” in the vast Indo-Pacific theater.
The CH-7 is a stealthy, navalized drone with an apparent long-range capability, operated by Beijing’s People’s Liberation Army Navy, or PLAN. Outwardly, the aircraft is not so dissimilar to the X-47B, operated by the United States Navy. Both aircraft appear to be powered by a single engine, located deep within their respective flying wing fuselages.
China’s state-owned China Aerospace Science and Technology Corporation developed the CH-7 UAV, although many details about this particular platform are not publicly known. The aircraft’s name, however, is: CH-7 stands for Caihong-7, or Rainbow-7. Much of what is definitely known about the aircraft is known from what Chinese sources themselves have said about it.
One of the CH series chief designers, Shi Wen, spoke with the China Daily, a Chinese state-owned daily newspaper, about the CH-7. Mr. Wen explained that the CH-7’s design supports operations not against lightly armed non-state actors, but for high-intensity warfare against a peer rival and combat operations in highly contested environments.
“Existing combat drones in the international market are suitable for low-intensity warfare, such as counterterrorism operations, but cannot handle high-tech conflicts that usually involve fighter jets or modern air-defense missiles,” Mr. Wen explained. “By comparison,” he added, “the characteristics of the CH-7, such as its high speed and stealth capability, make it a good fit for high-tech confrontations.”
The division that Mr. Wen made between the kinds of UAVs that the United States is now investing in and developing, and the kinds of UAVs that the United States fielded in the 2000s and 2010s, is stark—in the years following the 9/11 attacks and subsequent American involvement in Afghanistan and Iraq, high-altitude, long-endurance UAVs like the iconic Reaper and Predator drones excelled. The environments in which they operated were virtually devoid of enemy air defenses.
Consequently, those drones, made by General Atomics, could eschew stealthy characteristics like radar-absorbent coatings and the kinds of carefully contoured fuselages sported by fifth and sixth-generation aircraft that allow them to avoid detection by adversary radar.
The ongoing war in Ukraine is a clear demonstration of the utility of stealth considerations in modern war against peer or near-peer rivals: given the intensity of electronic warfare assets and jamming in Ukraine, fighter jets, helicopters, and large drones from both sides avoid frontline areas, opting instead for lobbing stand-off missiles at distant targets. The CH-7, on the other hand, is designed to enter into those kinds of environments and to survive.
Another Chinese newspaper, the Global Times, explained that “the missions that the CH-7 can conduct include monitoring combat zones, electronic support and jamming, and the radar that it carries can carry out long-range air and sea surveillance, and detect large surface vessels, according to the developer,” quoting an unnamed executive at a Chinese aerospace firm.
“In other words,” the Global Times added, “the CH-7 is the ‘eyes’ for other combat units who are responsible for attack, such as bombers or fighter jets, going deep inside the enemy’s area, taking advantage of its advanced stealth and searching capabilities to locate hostile warships, including aircraft carriers. Then, bombers or other units can launch missiles with precision, destroying the enemy’s vessels from a long distance.”
The Tyranny of Distance and the Indo-Pacific
The Indo-Pacific is one of the most important regions in the world: as USINDOPACOM explains, two of the world’s most populous countries, India and China, and about fifty percent of the world’s population call the area home, and a significant portion of world trade traverses the waters of the region. And while the area is of obvious importance to much of the world, it is also a region defined by emptiness. High stretches of ocean separate the various atolls, island nations, and other remote islands that dot the region’s surface. For China, the United States, or any other nation to excel in that theater in a wartime environment, they would first need to conquer the vast wastes of emptiness before an adversary.
To win in the Indo-Pacific, platforms with exceptionally long ranges are of paramount importance. For large, expensive platforms like submarines and aircraft carriers, this means nuclear propulsion. For smaller surface vessels, fighter jets, bombers, UAVs, and other types of platforms, this means fuel — a lot of fuel. Aircraft like the US Navy’s X-47B and China’s CH-7 appear to be attempts to maximize onboard fuel.
One United States Navy publication wrote that the X-47B “was designed to be a long-range vehicle that could operate at a ceiling of 40,000 feet at a speed classified as high subsonic — that’s more than 600 miles per hour. The purpose of the X-47 is to demonstrate unmanned air vehicle (UAV) carrier suitability. It is only flight cleared for 15,000 feet and 220 knots for testing,” with the caveat that there are “currently no plans to operationalize X-47B.”
Flying Wing Design
The utility of a flying wing aircraft is already apparent however, irrespective of if the X-47B or CH-7 become operational — thanks to the United States Air Force, which operates several other large flying wing-type aircraft: the RQ-180 an unmanned, long-range drone, and the B-2 Spirit, a strategic bomber capable of carrying nuclear weapons, with another bomber and successor to the B-2, the B-21 Raider, on the horizon.
Those aircraft each feature a flying wing design, both for its inherent stealth advantages and for the significant reduction in drag that the elimination of a wing assembly offers.
Combined with a considerable amount of internal volume, they can traverse enormous distances — much farther than most traditional aircraft.
About the Author: Caleb Larson
Caleb Larson is an American multiformat journalist based in Berlin, Germany. His work covers the intersection of conflict and society, focusing on American foreign policy and European security. He has reported from Germany, Russia, and the United States. Most recently, he covered the war in Ukraine, reporting extensively on the war’s shifting battle lines from Donbas and writing on the war’s civilian and humanitarian toll. Previously, he worked as a Defense Reporter for POLITICO Europe. You can follow his latest work on X.
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