Aerospace Sciences

When was the first manned balloon flight

Late 1700s (November 21 1783)

Who designed the first hot air balloon?

Joseph and Etienne Montgolfer

Who flew in the first tethered balloon flight?

Etienne Montgolfer

Who were the first humans to fly untethered in a balloon?

Major Pilatre and Marquis d’ Arlandes

Over what city did they fly over?

Paris, France

Who built the first hydrogen balloon?

Jacques Alexander Cesar Charles (J.A.C)

What is a problem with hydrogen filled balloons

Extreme Volatile (explosive)

What is a favorable property of helium?

Iner gas

What is Archimedes Principle?

When gas is less dense, air enclosed in a container.

Why is the atmosphere considered a fluid?

Neither gas or liquid have a definite shape

What are two major gases that make up Earth’s atmosphere? (and at what ratio?)

¼ OXYGEN, 4/5 NITROGEN!

How high does Earth’s atmosphere extend?

100 miles (About 528,000 feet)

Why is it said that the atmosphere can be compared to a pile of blankets?

The weight/density is a heavier on the bottom of the pile than it is on the top.

Atmosphere pressure equals…

14.7 pounds per square inch

Barometric pressure equals…

29.92 Hg (Mercury)

What are standard atmospheric conditions?

59 F (15 C)

What is the standard lapse rate

For every 1000 ft you go up, the temperature decreases by 3.5 F and 1 inch of Hg (Mercury)

The correct order:

Thermosphere
Mesosphere
Stratosphere
Tropopause
Troposphere

What is Conduction?

The transfer of energy through matter from particle to particle.

What is Convection?

The transfer of heat energy in gas or liquid by movement of currents.

Radiation

Electromagnetic waves that directly transport energy through space.

Jet Stream

Blows wind west to east and goes from 150 - 300 mph but the speed can reach up to 450 mph!

Parts of balloon (specifically look at the back of your paper)

Parachute Value
Gores
Panel
Skirt
Burners
Propane Tanks
Parachute Valve Cord
Whicker Basket
Envelope