Launch vehicles and spaceports: how rockets reach orbit

At a glance

A launch vehicle’s job is to lift a payload out of Earth’s gravity well and atmosphere and accelerate it to a speed at which it can stay in orbit. The energy required is so great that most of the lift-off mass is propellant, and the satellite or capsule is often only a few per cent of the total. The table compares the main vehicles in service or in development as of October 2026, using the figures published by their manufacturers and agencies.

Values are taken from official manufacturer and agency pages (accessed October 2026). Falcon 9 figures are for the expendable case; reserving propellant for landing reduces capacity. Vulcan’s LEO figure refers to a 200 km, 28.7° reference orbit. For SLS the agency quotes mass sent to the Moon rather than a LEO figure. A dash (—) means the source gives no value.

Sources: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13]

Reaching orbit: the Δv budget, staging and the gravity turn

Staying in orbit is not about going high enough but about going sideways fast enough. Using the gravitational parameter and equatorial radius from NASA’s Earth fact sheet, a circular orbit at 200 km altitude requires about 7.8 km/s. The total velocity change (Δv) the rocket must supply is larger: in the first minutes after lift-off part of the thrust merely holds the vehicle up against gravity (gravity loss), and air drag and steering also take their share. With these losses, the Δv needed for low Earth orbit comes to roughly 9.4 km/s, the approximate value the site’s calculator uses. For the mathematics, see the Delta-v and the rocket equation guide.

The Tsiolkovsky rocket equation states that achievable Δv is proportional to the engine’s exhaust velocity (specific impulse) and to the logarithm of the ratio of full to empty mass. The logarithm is unforgiving: reaching 9.4 km/s with a single stage would require a structure with almost no mass. The answer is staging. When the first stage runs out of propellant it drops away with its empty tanks and engines, and the second stage accelerates a much lighter vehicle. Almost all orbital rockets today have two or three stages, and heavy vehicles add solid-fuel boosters.

The ascent profile also shapes the budget. The rocket first rises vertically for a short time, then makes a small pitch-over manoeuvre to begin a gravity turn: from then on it keeps its nose along its direction of motion and lets gravity gradually bend the path towards horizontal. This reduces aerodynamic loads and turns more and more of the thrust into horizontal speed. The fairing is jettisoned once the rocket is above the dense atmosphere; on Falcon 9 this happens about 3 minutes after lift-off.

Sources: [14] [1]

Interactive lab: two-stage rocket Δv calculator

Change each stage’s specific impulse, propellant and dry mass, and the payload below; compare the “Falcon 9-like” and “hydrogen upper-stage” presets. Watch how total Δv falls as the payload grows and when you miss the 9.4 km/s threshold; the tool’s note explains that the presets are educational approximations.

Propellants and engines

The performance of a chemical rocket depends largely on its choice of fuel and oxidiser. Kerosene (RP-1) and liquid oxygen form a dense, easily stored combination; Falcon 9’s first stage, with nine Merlin engines, burns it and produces more than 1.7 million pounds (about 7.6 MN) of thrust at sea level. Liquid hydrogen and liquid oxygen give the highest specific impulse, but hydrogen is very low in density and hard to store, so it is used mostly in upper stages: the RL10C engines on Vulcan’s Centaur V and New Glenn’s BE-3U engines are examples. The four RS-25 engines on the SLS core stage also burn hydrogen.

A combination that has gained ground recently is liquid methane and liquid oxygen. Methane burns cleaner than kerosene and leaves less soot inside the engine, which eases reuse. SpaceX’s Raptor and Blue Origin’s BE-4 burn methane; the BE-4 powers the first stages of both New Glenn and Vulcan. Solid-fuel boosters provide short bursts of very high thrust at lift-off: Vulcan uses up to six GEM 63XLs, and SLS and Ariane 6 also lift off with solid boosters. For engine cycles and specific impulse, read the Rocket propulsion systems guide and the Rocket propulsion research dossier.

Sources: [1] [7] [5] [9] [3] [11]

Reusability: a new economic equation

On traditional rockets every stage was used once, falling into the ocean or burning up in the atmosphere. The idea behind reuse is simple: if the most expensive part of the vehicle, the first stage and its engines, is recovered, each launch costs only propellant, refurbishment and the expended upper stage. The price is performance. Propellant reserved for the return comes out of the payload; the 22.8-tonne LEO capacity SpaceX quotes for Falcon 9 reflects the case in which the stage is not recovered.

Three recovery methods are in use today. Falcon 9 and New Glenn stages relight their engines and land on legs, either back at the launch site or on an uncrewed platform at sea. Starship’s Super Heavy booster carries no legs; it is designed to be caught in mid-air by the arms of the launch tower. China’s Long March 10B became, in 2026, the first vehicle to catch its stage with a net system on a sea platform. Reuse is one of the main reasons launch rates are climbing fast, which in turn increases the number of satellites in orbit and the risk of space debris.

Sources: [1] [3] [15]

Spaceports and why latitude matters

Earth rotates from west to east, and a point on the equator moves at about 465 m/s, calculated from the equatorial radius (6,378.137 km) and sidereal rotation period (23.9345 hours) in NASA’s Earth fact sheet. A rocket launched eastwards gets this speed for free. The gain falls with the cosine of latitude: 465 m/s × cos(latitude). ESA notes that Kourou, about 500 km north of the equator, gives launchers a 460 m/s speed boost and reduces the orbital changes needed by satellites bound for geostationary orbit.

The second, more important effect of latitude is orbital inclination. In a direct launch, a rocket cannot reach an orbit inclined less than the latitude of its launch site. Because geostationary satellites orbit in the equatorial plane, a satellite launched from high latitude must make an extra, costly manoeuvre to remove its inclination, which is why sites near the equator have an advantage for geostationary missions. Safety matters too: most spaceports sit on coasts with open sea to the east or south, where stages and any debris can fall. Rocket Lab’s Mahia site in New Zealand gives access to a wide range of inclinations, from 39 degrees up to sun-synchronous orbit.

Each site has its own role: Kourou (French Guiana) is Europe’s base for Ariane 6; Cape Canaveral and the neighbouring Kennedy Space Center in Florida host Falcon 9, New Glenn, Vulcan and SLS launches; Baikonur (Kazakhstan) is the historic centre of Russia’s crewed flights; Tanegashima launches H3, Sriharikota serves India, and Wenchang hosts China’s heavy rockets. For the geometry of orbits, see the Orbital mechanics guide.

Sources: [14] [16] [17] [18] [19] [20] [21]

Current research (2024–2026)

Falcon 9: reuse records

On 25 August 2026 the Falcon 9 first stage B1067 set a record with its 37th flight, landing on the ocean platform afterwards. The launch was Falcon 9’s 100th flight of 2026. By then SpaceX had six first stages that had each flown at least 30 times.

Starship: V3 and the first orbital flight

Starship is a two-stage system about 124 metres tall and 9 metres in diameter, designed for full reuse, with 33 Raptor engines on its Super Heavy booster. On its 14th test flight, on 28 September 2026, it reached orbit for the first time and released 26 Starlink V3 satellites. The ship reached orbit despite losing one of its six engines during ascent; the planned 10-hour flight was cut to about three hours and the ship splashed down in the Pacific. Super Heavy was not caught by the tower on this flight but simulated an offshore landing in the Gulf of Mexico. Surviving re-entry with an intact heat shield remains the key test for full reuse.

New Glenn: first landing, first reuse and setbacks

New Glenn reached orbit on its first flight on 16 January 2025, but the first stage was lost during descent. On the second flight, in November 2025, the stage landed successfully. On NG-3, on 19 April 2026, the same stage flew again and landed normally; however, one of the second stage’s BE-3U engines did not produce enough thrust on its second burn, leaving the BlueBird 7 satellite in an orbit too low to sustain, so it had to re-enter. On 28 May 2026 a vehicle exploded on the pad during a static-fire test. Blue Origin said the failure began at the main oxygen valve of a BE-4 engine and aims to have the LC-36 pad back in service before the end of 2026.

China: Long March 10 and 10B

On 11 February 2026 China flew a prototype of Long March 10, developed for its crewed lunar programme, on a low-altitude test from Wenchang; the same test exercised the Mengzhou crew capsule’s abort system at maximum dynamic pressure. On 10 July 2026 Long March 10B carried a satellite to orbit on its first flight, and its first stage was caught by a net on a sea platform.

Heavy lift and new rockets

NASA’s SLS launched Artemis II, carrying four astronauts around the Moon, on 1 April 2026; the Orion capsule splashed down in the Pacific on 10 April 2026. Ariane 6 has provided Europe’s independent access to space since its first flight on 9 July 2024. Japan’s H3 failed to deliver the Michibiki 5 satellite on 22 December 2025; JAXA’s investigation pointed to a damaged payload adapter, and the vehicle returned to flight successfully with six satellites in June 2026. Rocket Lab’s Neutron, with a reusable first stage, had not flown as of August 2026; the company aims to bring it to the pad in the last quarter of 2026 but says the debut may slip into 2027.

Sources: [22] [3] [4] [6] [23] [24] [25] [26] [15] [27] [11] [28] [29] [30]

Launch statistics: 2025

According to astrophysicist Jonathan McDowell’s annual report, there were 329 orbital launch attempts worldwide in 2025, of which 321 reached orbit or marginal orbit. Of the attempts, 181 were from the USA, 92 from China, 17 from Russia and 17 from New Zealand (Rocket Lab’s Mahia site); Europe made 8, India 5 and Japan 4. Falcon 9 alone flew 165 times, showing how strongly a single vehicle shapes the global picture. Starship made five test flights in the same year.

The figures also reflect how satellite constellations, above all Starlink, have transformed launch demand. McDowell’s open data tables, covering payload numbers, orbits and failures, are among the most comprehensive independent resources for researchers.

Sources: [31]

Türkiye context

One of the ten goals of Türkiye’s National Space Programme listed in the Turkish Space Agency’s 2021 activity report is “access to space and a spaceport”. According to the report, an analysis study was launched under TUA coordination, with four working groups on payloads, the launch vehicle, innovative technologies and launch sites. This page gives no schedule or location beyond this framework, which is what official sources verify.

Sources: [32]

Known vs open questions

Established

• Low Earth orbit needs an orbital speed of about 7.8 km/s, or roughly 9.4 km/s of Δv including losses.
• Staging is the basic way around the logarithmic limit of the rocket equation.
• For an eastward launch the gain at the equator is about 465 m/s, falling with latitude.
• Routine recovery and reflight of first stages is an operational reality (up to 37 flights on Falcon 9).

Open questions

• Is full, rapid reuse of upper stages and ships (Starship) economically sustainable?
• How many flights can a stage safely make, and how do fatigue and refurbishment costs evolve?
• How will rising launch rates affect upper-atmosphere chemistry and the orbital environment?
• On what timescale will new vehicles (Neutron, Long March 10, a reflown New Glenn) enter regular service?

Related on this site

• Research dossier: Rocket propulsion
• Delta-v and the rocket equation
• Orbital mechanics
• Human spaceflight
• Space stations
• Space debris
• Rocket lab
• Orbit lab