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Sounding rocket 2 Suborbital Retired (0/1) 2018 [36] Astra Rocket 3 Light rocket 2 LEO Retired (2/5) 2020 [37] [38] Astra Rocket 4 Light rocket 2 LEO Development 2023 (planned) [39] [40] SALVO Light rocket 2 LEO Cancelled — [41] [42] [43] Bellatrix Aerospace: Chetak Light rocket 2 LEO Development 2023 (planned) Blue Origin: New Shepard ...
An antimatter rocket is a proposed class of rockets that use antimatter as their power source. There are several designs that attempt to accomplish this goal. The advantage to this class of rocket is that a large fraction of the rest mass of a matter/antimatter mixture may be converted to energy, allowing antimatter rockets to have a far higher energy density and specific impulse than any ...
Relativistic rocket means any spacecraft that travels close enough to light speed for relativistic effects to become significant. The meaning of "significant" is a matter of context, but often a threshold velocity of 30% to 50% of the speed of light (0.3 c to 0.5 c ) is used.
A photon rocket is a rocket that uses thrust from the momentum of emitted photons (radiation pressure by emission) for its propulsion. [1] Photon rockets have been discussed as a propulsion system that could make interstellar flight possible during a human lifetime, which requires the ability to propel spacecraft to speeds at least 10% of the speed of light, v ≈ 0.1c = 30,000 km/s. [2]
The Hydra 70 rocket is an American made 2.75-inch (70 mm) diameter fin-stabilized unguided rocket used primarily in the air-to-ground role. It can be equipped with a variety of warheads, and in more recent versions, guidance systems for point attacks.
All launch vehicle propulsion systems employed to date have been chemical rockets falling into one of three main categories: Solid-propellant rockets or solid-fuel rockets have a motor that uses solid propellants, typically a mix of powdered fuel and oxidizer held together by a polymer binder and molded into the shape of a hollow cylinder. The ...
At the outer radius, however, the circular orbits are stable; the third term is less important and the system behaves more like the non-relativistic Kepler problem. When a {\textstyle a} is much greater than r s {\textstyle r_{\text{s}}} (the classical case), these formulae become approximately
This relation can be thought to represent the non-relativistic decomposition of the electromagnetic 4-vector potential. Indeed, a system of point-particle charges moving slowly with respect to the speed of light may be studied in an expansion in v 2 / c 2 {\displaystyle v^{2}/c^{2}} , where v {\displaystyle v} is a typical velocity and c ...