What is lunar orbital velocity?
The orbital speed of the Moon is 1.03 km/s. The Moon rotates on its axis once every 27.32166 days. This is the sidereal month and corresponds to the time taken for the average period of revolution of the Moon about the Earth.
How fast is TLI?
This particular TLI burn lasted approximately 350 seconds, providing 3.05 to 3.25 km/s (10,000 to 10,600 ft/s) of change in velocity, at which point the spacecraft was traveling at approximately 10.4 km/s (34150 ft/s) relative to the Earth.
How fast is Translunar injection?
The moment when a spacecraft leaves Earth orbit to begin a trajectory to the Moon. The Apollo spacecraft required a speed of nearly 40 225 kph to achieve TLI.
What was the escape velocity of Apollo 11?
24,500 mph
After one and a half Earth orbits, 2 hours and 44 minutes after launch, the Saturn’s third-stage J-2 engine was re-started to produce a second burn lasting 5.2 minutes which accelerated the Apollo 11 to an altitude of 190 miles with a velocity of 24,500 mph (10.9 kms/sec) to escape from its Earth parking orbit and …
How do you calculate orbital velocity?
As seen in the equation v = SQRT(G * Mcentral / R), the mass of the central body (earth) and the radius of the orbit affect orbital speed. The orbital radius is in turn dependent upon the height of the satellite above the earth.
How long is a lunar orbit?
27 daysMoon / Orbital period
How long was the TLI burn?
346 sec
| Earth Orbit / TransLunar Trajectory | LM Ascent & Rendezvous | |
|---|---|---|
| TLI Burn Duration = 346 sec | 188 hr 04 min | |
| CSM/S-IVB Separation | 4 hr 12 min | 188 hr 11 min |
| Dock with LM | 4 hr 22 min | 188 hr 58 min |
| CSM/LM ejection | 5 hr 07 min | Burn Duration = 3 sec |
When did Apollo 11 enter lunar orbit?
Apollo 11 was launched on July 16, 1969, at 8:32 AM Central Daylight Time (CDT) with the goal of performing the first human landing on the Moon. Commander Neil Armstrong, Command Module Pilot Michael Collins, and Lunar Module Pilot Edwin “Buzz” Aldrin entered lunar orbit on the afternoon of July 19.
Where is TransLunar space?
Translunar space is vast expanse surrounding the Earth-moon system, extending far beyond the moon’s orbit and dominated by the two bodies’ gravity fields.
How fast did the Saturn V acceleration?
In my research I found the acceleration of the space shuttle to be approximately 20 m/s2 and the more massive Saturn V to have an acceleration slightly lower at 11.7 m/s2. For the last two sources, I found the liftoff thrust and mass of the rockets and used Newton’s Second Law of Motion to find the acceleration.
What is the fastest rocket?
The spacecraft that is traveling the fastest is NASA’s Parker Solar Probe. After it launched from Earth in 2018, it skimmed the Sun’s scorching atmosphere and used the Sun’s gravity to reach 330,000 mph. That’s blindingly fast — yet only 0.05% of the speed of light.
How fast is orbital velocity?
approximately 17,000 mph
Orbital velocity is the velocity needed to achieve balance between gravity’s pull on the satellite and the inertia of the satellite’s motion — the satellite’s tendency to keep going. This is approximately 17,000 mph (27,359 kph) at an altitude of 150 miles (242 kilometers).
What is the velocity of a lunar orbit transfer?
The lunar orbit insertion ΔV is at least 640 m/s for low-energy transfers, assuming an impulsive maneuver to immediately target a 100-km circular lunar orbit. Direct lunar transfers require at least 120 m/s more ΔV, and often significantly more ΔV than that to target the same arrival conditions.
What is a low-energy lunar orbit transfer?
This chapter examines low-energy transfers that target low, 100-kilometer (km), polar lunar orbits. The analyses presented here may be applied to any lunar orbit insertion; polar orbits are used as examples since mapping missions have historically been frequently sent to near-polar orbits about the Moon.
Which combination of Ω and ω yields simple lunar transfers?
Figure 4-17 The combinations of Ω and ω that yield simple lunar transfers, that is, those without low Earth or lunar periapse passages. If multiple transfers exist for the same combination, then the one with the least LOI ΔV is shown.
How does a trans-lunar injection achieve escape velocity?
The trans-lunar injection doesn’t achieve escape velocity. Instead it changes the orbit of the spaceship to an elliptical orbit that intersects the Moon’s orbit. The Wikipedia article on Hohmann transfers explains this very nicely. The spaceship starts out in a circular orbit around the Earth.