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The lift-to-drag ratio, or L/D ratio, is the amount of lift generated by a wing or vehicle, divided by the drag it creates by moving through the air. A higher L/D ratio leads to a better glide slope angle, or glide ratio. The effect of airspeed on the rate of descent can be depicted by a polar curve. These curves show the airspeed where minimum ...
The jumping height is limited by the EVA space suit's weight on the Moon of about 13.6 kg (30 lb) and by the suit's pressurization resisting the bending of the suit, as needed for jumping. [81] [82] On average the Moon's surface gravity is 1.62 m/s 2 [4] (0.1654 g; 5.318 ft/s 2), about half of the surface gravity of Mars and about a sixth of ...
Avoirdupois ounce per fluid ounce (1 g/cm 3 ≈ 1.04317556 oz/US fl oz = 1.04317556 lb/US fl pint) Avoirdupois pound per cubic inch (1 g/cm 3 ≈ 0.036127292 lb/cu in) pound per cubic foot (1 g/cm 3 ≈ 62.427961 lb/cu ft) pound per cubic yard (1 g/cm 3 ≈ 1685.5549 lb/cu yd) pound per US liquid gallon (1 g/cm 3 ≈ 8.34540445 lb/US gal)
Rifling of a 105 mm Royal Ordnance L7 tank gun Conventional rifling of a 90 mm M75 cannon (production year 1891, Austria-Hungary) Rifling in a GAU-8 autocannon. Rifling is the term for helical grooves machined into the internal surface of a firearms's barrel for imparting a spin to a projectile to improve its aerodynamic stability and accuracy.
The majority view of the scientific establishment at the time is probably best summarized by English astronomer Edward Walter Maunder (1851–1928) who compared the climate of Mars to conditions atop a twenty-thousand-foot (6,100 m) peak on an arctic island [82] where only lichen might be expected to survive.
Large or small pregnancy weight gain: 1.8: 1.5–2.3 ... These devices then calculate a risk of preterm birth and send the ... she was 23 cm (9 in) long and weighed ...