Knots to First Cosmic Velocity (kn → v1)
Formula
1 kn = 0.00006511949367088608 v1Conversion Table
| kn | v1 |
|---|---|
| 0 | 0 |
| 1.0000 | 0.000065119 |
| 2.0000 | 0.00013024 |
| 3.0000 | 0.00019536 |
| 4.0000 | 0.00026048 |
| 5.0000 | 0.00032560 |
| 6.0000 | 0.00039072 |
| 7.0000 | 0.00045584 |
| 8.0000 | 0.00052096 |
| 9.0000 | 0.00058608 |
| 10.000 | 0.00065119 |
| 11.000 | 0.00071631 |
| 12.000 | 0.00078143 |
| 13.000 | 0.00084655 |
| 14.000 | 0.00091167 |
| 15.000 | 0.00097679 |
| 16.000 | 0.0010419 |
| 17.000 | 0.0011070 |
| 18.000 | 0.0011722 |
| 19.000 | 0.0012373 |
| kn | v1 |
|---|---|
| 20.000 | 0.0013024 |
| 21.000 | 0.0013675 |
| 22.000 | 0.0014326 |
| 23.000 | 0.0014977 |
| 24.000 | 0.0015629 |
| 25.000 | 0.0016280 |
| 26.000 | 0.0016931 |
| 27.000 | 0.0017582 |
| 28.000 | 0.0018233 |
| 29.000 | 0.0018885 |
| 30.000 | 0.0019536 |
| 31.000 | 0.0020187 |
| 32.000 | 0.0020838 |
| 33.000 | 0.0021489 |
| 34.000 | 0.0022141 |
| 35.000 | 0.0022792 |
| 36.000 | 0.0023443 |
| 37.000 | 0.0024094 |
| 38.000 | 0.0024745 |
| 39.000 | 0.0025397 |
| kn | v1 |
|---|---|
| 40.000 | 0.0026048 |
| 41.000 | 0.0026699 |
| 42.000 | 0.0027350 |
| 43.000 | 0.0028001 |
| 44.000 | 0.0028653 |
| 45.000 | 0.0029304 |
| 46.000 | 0.0029955 |
| 47.000 | 0.0030606 |
| 48.000 | 0.0031257 |
| 49.000 | 0.0031909 |
| 50.000 | 0.0032560 |
| 51.000 | 0.0033211 |
| 52.000 | 0.0033862 |
| 53.000 | 0.0034513 |
| 54.000 | 0.0035165 |
| 55.000 | 0.0035816 |
| 56.000 | 0.0036467 |
| 57.000 | 0.0037118 |
| 58.000 | 0.0037769 |
| 59.000 | 0.0038421 |
| kn | v1 |
|---|---|
| 60.000 | 0.0039072 |
| 61.000 | 0.0039723 |
| 62.000 | 0.0040374 |
| 63.000 | 0.0041025 |
| 64.000 | 0.0041676 |
| 65.000 | 0.0042328 |
| 66.000 | 0.0042979 |
| 67.000 | 0.0043630 |
| 68.000 | 0.0044281 |
| 69.000 | 0.0044932 |
| 70.000 | 0.0045584 |
| 71.000 | 0.0046235 |
| 72.000 | 0.0046886 |
| 73.000 | 0.0047537 |
| 74.000 | 0.0048188 |
| 75.000 | 0.0048840 |
| 76.000 | 0.0049491 |
| 77.000 | 0.0050142 |
| 78.000 | 0.0050793 |
| 79.000 | 0.0051444 |
Knots to First Cosmic Velocity Conversion
Converting Knots (kn) to First Cosmic Velocity (v1) is a common speed conversion. 1 kn equals 0.000065 v1. For example, 100 kn is equal to 0.006512 v1.
Quick Reference Values
1 kn = 0.000065 v1. 5 kn = 0.000326 v1. 10 kn = 0.000651 v1. 25 kn = 0.001628 v1. 50 kn = 0.003256 v1. 100 kn = 0.006512 v1.
What is Knots?
Knots (kn) is a unit of speed. A knot is a unit of speed equal to one nautical mile per hour. It precisely corresponds to 1.852 kilometers per hour or 0.51444 meters per second. The knot is internationally recognized for maritime and aviation speed measurements and is defined using the international nautical mile of exactly 1852 meters [nist-si-guide]. The knot originated from the practice of measuring speed at sea using a 'log line' with knots tied at regular intervals. The term and unit were standardized with the adoption of the international nautical mile in 1929 by the International Hydrographic Organization [nist-si-guide]. Knots are the standard speed unit in global maritime navigation and aviation. Countries and organizations like the International Maritime Organization (IMO) and International Civil Aviation Organization (ICAO) mandate its use for vessel and aircraft speed reporting [nist-si-guide].
What is First Cosmic Velocity?
First Cosmic Velocity (v1) is a unit of speed. The first cosmic velocity is the minimum orbital speed required for an object to maintain a stable circular orbit just above a planet's surface, approximately 7.9 km/s for Earth. It is derived from Newtonian mechanics and gravitational parameters, calculated by √(GM/R) where G is the gravitational constant, M the planet mass, and R its radius [nist-cuu]. The concept of cosmic velocities was formulated by Russian scientist Konstantin Tsiolkovsky in the early 20th century when studying orbital mechanics. It formalized escape and orbital speeds as fundamental limits for spacecraft [nist-cuu]. This velocity is critical in aerospace engineering and space mission design globally, used by space agencies such as NASA, ESA, and Roscosmos. It serves as a baseline for launching satellites into low Earth orbit [nist-cuu].
Common Misspellings
People often search for this conversion using these alternate spellings: knotz, knotses, knotss, knotts, first cosmic velocity, cosmic velocity 1st, cosmic velocity one, orbital velocity first, cosmic velocity 1. All of these refer to the Knots to First Cosmic Velocity conversion.