Altitudes

Using a plane that uses air-breathing engines, optimized for lower altitudes, allows rocket designers to optimize the rocket engine for higher altitudes and lets you launch more mass into orbit for less fuel.

Altitudes below 500-600 kilometers are in general avoided, though, because of the significant air-drag at such low altitudes making frequent orbit reboost maneuvres necessary.

ATC will assign altitudes in its initial clearance or amendments thereto, and navigational charts indicate minimum safe altitudes for airways.

Higher altitudes are cooler than lower altitudes due to differences in compressional heating.

During the scenarios, the aggressor drones approached the defended area at different speeds and altitudes to test the system under evaluation’s ability to defeat the threats.

However, the thinner atmosphere at higher altitudes affords less protection from cosmic rays.

Most standard heavy-lift zero pressure balloons can vary in altitudes as much as 45,000 feet (13.7 km) due to the alternating warming and cooling of the day-night cycle.

Oxygen atoms high in the atmosphere are known to produce a red glow, while a green hue may be the result of charged particles striking oxygen at lower altitudes.

The second and third were spotted at altitudes of about 12,000 metres, which is at the top end of the normal cruising height for more commercial airplanes.

These incidents often occur at lower altitudes, with the potential for severe consequences.

U.S. officials said the two more recent objects were much smaller in size, different in appearance and flew at lower altitudes than the suspected Chinese spy balloon that fell into the Atlantic Ocean after the U.S. missile strike.

Wind shear occurs when winds at low altitudes are not blowing in the same speed or direction as winds at higher elevations.

With the February school holidays underway in Vienna, Austria's resorts have filled up, after a poor start to the season because of the lack of snow at low and medium altitudes.

Your operator's jump heights could be affected to simulate if they were walking on the moon, landing from high altitudes might cause a grenade-like explosion around you, and more.

According to Theodoros Kolydas and Yiannis Kallianos, snowfall on Saturday will occur at lower altitudes, including in Attica.

At higher altitudes, heavy snow and strong winds unleashed blizzards.

Atmospheric instability occurs when very warm air gets trapped at the surface, and air temperature gets much cooler at higher altitudes, Morales said.

Because of its original design as a tactical support aircraft, the A-10 is meant to fly at lower altitudes than most other Air Force aircraft.

Expected to make its first flight in 2025, the MiG-41 aims to achieve speeds over Mach 4, include advanced stealth features, and operate at near-space altitudes.

Futures for robusta, the cheaper coffee bean grown at lower altitudes and requiring less care than more expensive arabica, jumped the most in London on Tuesday since 2011 as concerns increased over shrinking supplies from top grower Vietnam.