Questions tagged [hypergolics]
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Are there any storable non-hypergolic oxidizers?
Any list of bipropellant rocket fuels I've come across has oxidizers that are either cryogenic (liquid oxygen), hypergolic (nitric acid), or both (liquid fluorine). Are there any practical rocket ...
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Non-Cryogenic Propellant Transfer
I know there are programs like the Rocket Lab CryoSat, but I was wondering if there have been any tests of non-cryo propellant transfer?
I know the Space Station refuels with a storable hypergol, but ...
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How to calculate combustion temp? [duplicate]
I was reading about a propellant combination using ethanolamine(19.9% propellant fraction w/ 1% Copper Chloride) and 90% HTP(80.1%). I am trying to design a hypothetical engine around the propellant, ...
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How to calculate future true anomaly for hyperbolic trajectory? Did I make a mistake in my calculations?
I'm trying to calculate future spacecraft's position and velocity at time t. I need to calculate the true anomaly at time t for this.
I've already made it for the elliptic orbits and it is working ...
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Is Lucy fueled with hydrazine and liquid oxygen?
On Sept. 18, propulsion engineers finished filling Lucy’s fuel tanks
with approximately 1,600 pounds (725 kilograms) of liquid hydrazine
and liquid oxygen, which make up 40% of the mass of the ...
- 49.2k
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Can rocket engines which use hypergolic propellants be augmented with LOX for increased efficiency?
Hypergolic rocket engines typically use NTO and hydrazine based propellants.
Wikipedia page on Liquid Rocket Propellants shows N2O4 and N2H4 at 1.36 ratio to have 286s Isp at sea level.
My question is ...
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Hypergolic Engine Diagram
Does anyone have any hypergolic rocket engine diagrams, preferably labeled but it's fine if they aren't? Thanks!
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Is there a "green" hypergolic propellant?
Is there any such thing as a non-cryogenic, liquid, "green" hypergolic bipropellant, where green means environment friendly and non-toxic?
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What is the products of a catalyzed reaction between Hydrogen Peroxide and Ethanolamine with Copper(II) Chloride?
I found this article about Hypergols, specifically H2O2. It mentions in table 3 and in the body of the paper that they found that Ethanolamine with Copper Chloride reacted vigorously. In my search for ...
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How do pressure-fed engines stay cool?
Does anyone know how pressure-fed/hypergolic rocket engines cool themselves down? Do they regenerativly cool themselves?
Thanks!
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Why shouldn't Chang'e 5's lander's propellant freeze?
We have just measured the shape of the crater that the returner landed on, which is part of the scientific data collection. Then the returner will [put on a] 'new warm coat' to prevent the remaining ...
- 12.2k
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Burning Up Hydrazine and N2O4 for Safety
Sadly, all the "good" (storable, hypergolic, and having good performance) rocket fuels and oxidizers -- Hydrazine, methylated hydrazine, nitrogen tetroxide, and fuming nitric acid -- are ...
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Dinitrogen tetroxide decomposes to nitrogen dioxide at room temperature, but rockets that use it are usually said to use N₂O₄ and not NO₂ - why?
To the best of my understanding, both dinitrogen tetroxide and nitrogen dioxide are usable and perform quite similarly as oxidizers, but rockets that use either are almost always said to use ...
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What is the MXP-351 storable bipropellant?
Masten Space Systems has a proprietary hypergolic bipropellant called MXP-351 intended for use in the XL-1 lunar lander. We seem to know the following information:
Non-cryogenic, with storage life of ...
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Would symmetrical dimethylhydrazine work as a hypergolic fuel?
Hydrazine and its various derivatives have been used as hypergolic fuels.
hydrazine
monomethylhydrazine (MMH)
unsymmetrical dimethyl hydrazine (UDMH)
Aerozine 50 is a mixture of 50% hydrazine and ...
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