Introductio to AeroSpace 04
OPENING QUESTION: Is it possible for ALL the forces acting on an airplane to be balanced AND for the plane to be flying straight and level? Explain LEARNING GOAL FOR TODAY: WORDS O' THE DAY:
WORK O' THE DAY: ═══════════════════ Let's Review our persuasive argument presentation. Any questions? Let's take a VERY quick look at our list of planes... Here's kind of an interesting thought, could you put a Messerschmitt 262 jet engine on Charles Lindberg's plane? Why or why not? ═══════════════════ As we just discussed, the enemy of all flying things is weight. The more weight the plane has, the more thrust it has to have to increase airflow over the wings to increase. However, adding more engines greatly increases the mass and we are back to a weight problem again... How did builders (ESPECIALLY between WWI and WWII) solve that problem? ═══════════════════ Here's the bomber that the US flew during the early years of WWII: B17 "FLYING FORTRESS" ═══════════════════ Let's now compare those specifications with the bomber flying at the END of WWII The B24 "Liberator" ═══════════════════ B29 SuperFortress
═══════════════════ Now let's compare that to the venerable B52 "Stratofortress": The bomber that first flew in the late 1950's and is STILL in service today:
═══════════════════ And finally the B2: Interesting note It is often quoted that the B2 Bomber would be cheaper if it were made out of solid gold. If we take away gas and bombs and such the raw weight of the plane is 158,100 lbs. There are 16 ounces in one pound so the B2 weighs (158,100 lbs) x (16 oz/lb) = 2,529,600 ounces. Today's price for gold is $1,226.60 So... 2,529,600 ounces x $1,226.60/ounce = $3,102,807,360 Now... if we take the total cost of all maintenance, building, supplying, spare parts and such it turns out the costperplane for the B2 Bomber is $3,140,000,000 So, if we factor in all associated costs with building the B2 then it would pretty much be worth its weight in GOLD Let's mush on Fun Fact: The B2 bomber would be cheaper if it were built out of solid gold (calculating all costs such as development, spare parts testing etc... for 21 aircraft built = $3.1 billion per plane). If we take the maximum takeoff weight  including gas and bombs and such as a base, it would be worth around $400 million if it were made out of solid gold.


