Hmm, Loiter was not working Sunday when it had the camera/transmitter, digital servo, and bluetooth altimeter onboard, so one or more of those must affect the compass. Then I took it up higher and tried "Loiter" mode. Powered it up, and it flew fine! Had a few good minutes flying it in very low wind. I put the damaged decaled Ascent Stage shroud on it, the damage is not very noticeable from the front. It'll be awhile before I do rocket boosts again.Īlso for expediency, I used the old Version 2 Descent stage, which has a bit of damage but is flyable as a Quad. I did not attempt to replace the servo or add the onboard camera, which would have taken too long to do before dark (and I still have not gotten around to the servo problem). Had to do a few other things, check out motor rotation direction and fix as needed and other odds and ends. Update: Maybe I subliminally remembered this, or seeing something like it long ago:įound that rather than remove the broken arm, I was able to cut it square, use a telescoping piece of graphite tubing as a coupler to join the shortened arm to a replacement extension (fortunately the 3 wires fit thru). So neat to ask Mech-G "hey, would you mind doing XYZ on the next 3D print version?" and boom it's done. But for this model, it really needs some airflow to help keep the 4 in 1 ESC from overheating on a hot sunny day, hopefully this is enough (The ESC board is about at that level). Even the shuttle orbiter had air vents (rectangular vent doors on the fuselage sides). In real rockets, any unpressurized area has to be vented or air pressure differential could burst the structure on ascent (or collapse on descent). I won't put any other NASA logos on it, other than under the two ML-5 locations.īTW - the version 3 Ascent stage has eight holes near the bottom for a practical reason. Because it also kinda looks like "50", representing 50 years (I chose "5" to represent 5 decades). I think I'm going to do this on the next one. Grip, H.F., Scharf, D.P., Malpica, C., et al.: Guidance and control for a Mars helicopter.A test I did by adding a NASA logo under the ML-5 number, on the crashed ascent stage. AIAA Atmospheric Flight Mechanics Conference, Florida (2018) 3.445 (1993)īalaram, J., Canham, T., Duncan, C., et al.: Mars helicopter technology demonstrator. Savu, G., Oprisiu, C., Trifu, O.: An autonomous flying robot for Mars exploration. Kuhl, C.A., Gayle, S.W., Hunter, C.A., et al.: Trade study of multiple thruster options for the Mars airplane concept. Kuhl, C.A.: Design of a Mars airplane propulsion system for the aerial regional-scale environmental survey (ARES) mission concept. 29(1) (2008) (in Chinese)īraun, R.D., Wright, H.S., Croom, M.A., Levine, J.S., Spencer, D.A.: Design of the ARES mars airplane and mission architecture. AIAA_1979-0067 (1979)Ĭhen, J., Nie, H., Bai, H., et al.: The development of rotary-lander for Mars. Ouyang, Z., Xiao, F.: Major scientific issues involved in Mars exploration. This study can provide an important design basis for the development of Mars quad-rotor UAV. The results were consistent with the simulation analysis. Based on design result, the carbon fiber propeller was manufactured and the lifting force measurement test and the load-bearing take-off test were carried out under the simulated Mars atmosphere environment. When designing the propeller, the relationship between the blade inclination, rotation speed, radius and other factors on the blade lifting force is established, by using two-dimensional CFD simulation, and then the detailed structure of the propeller is designed. In this paper, the propulsion system, which is the most critical technology of the Mars quad-rotor UAV, is studied. Quad-rotor aircraft is a key development direction of Mars aircraft research because of its simple structure, high reliability, the ability of hovering in the air and repeatable takeoff and landing. Mars aircraft is a new Mars exploration tool and the research in this field is of great significance. New probe manner is required to investigate the planet more efficiently and flexibly. Mars has become a hot spot in deep space exploration.
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