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The V-2 rocket (German: Vergeltungswaffe 2, retaliation weapon), technical name A4, was a long range ballistic missile that was developed by the end of the Second World War in Nazi Germany. The rocket was the world's first long-range combat-ballistic missile and first human artifact to achieve sub-orbital spaceflight. It was the progenitor of all modern rockets. Over 3,000 V-2s were launched as military rockets by the German Wehrmacht against Allied targets during the war, mostly London and later Antwerp, resulting in the death of an estimated 7,250 military personnel and civilians. The weapon was presented by the Nazi propaganda as a retaliation for the bombers that succeeded in attacking ever more German cities from 1942 until the end of the war. From Wikipedia under the
GNU Free Documentation License From Yahoo Image Search: "V-2 rocket"  sciencemuseumdiscovery.com alanworman hu, 31 Dec 2009 14:06:07 GM The . V2. was chosen as one of our centenary icons, because it launched us into space. But as the power behind the first long-range missiles, it also threatened to destroy our world. An engine of war and discovery, these . rockets. have a ... From Google Blog Search: "V-2 rocket"  jalopnik.com Fri, 09 Jul 2010 15:05:21 GMT+00:00 Plane to Nuke New York From Orbit Jalopnik (blog) Sitting on a two-mile track, the Silbervogel was to be accelerated to 1200 mph by a rocket sled powered by a cluster of V-2 rocket engines. ...  llanonews.com Wed, 14 Jul 2010 21:05:01 GMT+00:00 The Llano News As the war came to an end, Livingston had the opportunity to explore Hitler's Eagle's Nest retreat at Berchtesgarten, and the V-2 rocket factory inside ...  jacksonville.com Thu, 24 Jun 2010 05:15:26 GMT+00:00 Florida Times-Union (blog) The first rocket was launched today from Cape Canaveral. These first rockets were actually captured Nazi-German V-2 rockets designed as a weapon of war. ... From Google News Search: "V-2 rocket" Who gets Rocket science? please help on physics problem...? Q. so far i have this info- i am trying to figure out how high the rocket would go mass of rocket= .0605 kg impulse = 2.5 Ns F(thrust) = 8 N Burn time = impulse/thrust = .316 sec F=ma a= F/m a= (thrust-weight-friction)/ mass i have everything except friction because the formula i am provided with by my physics teacher is ... Friction = [surface area * velocity^2 * k constant * rho (air density)]/(mass) = [(surface area of 11.84) (v^2) (constant of .75)(air density of 1.2)]/(mass) Please help me...what do i plug in for V^2 ...what is the velocity Asked by =0) - Wed May 27 21:04:24 2009 - - 1 Answers - 0 Comments A. The velocity is not constant. You need to write the force equation for the rocket, including gravity, thrust and friction. F= Ft - Fg - Ff Ft = thrust = 8 N Fg = weight = M*g Ff = force of friction = K*v where K includes all of the factors you listed: (air), surface area, etc. These are constant. K = 11.84*0.75*1.2 = 10.66 N*s /m There are implied assumptions here: the change is mass of the rocket because of fuel consumption is ignored, and the change in air density as the rocket rises is ignored. Taking those assumptions, you get M*dv/dt = Ft - Fg - Ff 0..0605*dv/dt = 8 - 0.0605*9.8 - 10.66*v ; Solve this differential eq for v(t) using the initial condition v(0) = 0. The altitude is then v*dt integrated from t = 0 to t =… [cont.] Answered by gp4rts - Wed May 27 22:03:05 2009 Definition? Q. i need a definition of at least 2 sentences for each...please include important names of people, groups or places! 1-war in Afghanistan 2-Persian Gulf war 3-War in Iraq 4-insurgents 5-Tangaweed 6- Werner Van Brahn/ V-2 rocket 7- La Guerica (painting and story) 8-opium trade 9-Kim Jong-il 10- "untermensch" 11-Promised Land 12- Diaspora 13- Zionist ***by the way this isn't my homework this is to study for a test tommorrow, my teacher just wants us to make notecards and is very specific about what we should know and be able to write*** thanks a ton! Asked by Ashley :) - Wed Sep 19 23:20:09 2007 - - 2 Answers - 0 Comments A. I have no qualms with helping. please mind the spelling at 2 in the morning here goes: 9 - dictator of n. korea 10 - "untermench" or the "under/lower man" as described by the nazis to describe the jews as being lesser people. the german described themselves as the ubermensch or upper/over man or supreme being 11. gaza strip as decribed by judaism 12. the expulsion of the jewish people from the israel and into europe Answered by rich - Thu Sep 20 04:53:45 2007 Rocket Equations: did I get this right?
Q. The ship being modeled is a freighter for hauling ore from the asteroid belt to Earth (it's for a SF universe). It can carry 2000 tons of cargo, and has another 200 tons of spaceframe, engine etc. It has a mass ratio of 4, giving it 6,600 tons of propellant (8,800 tons total "wet" mass). It uses a DT fusion drive, which has an exhaust velocity of 22,000 m/s. The Tsiolovski equation for Delta V is Delta V = Exhaust Velocity ln (Initial Mass in kg/Final Mass in kg). So: Dv = 22,000 ln (8,800,000 / 2,200,000) Dv = 30.5 km/s The energy production necessary to get a certain delta V is determined by the equation 1/2m(v^2) where m is the mass of propellant and v is the exhaust velocity. So in this case that's 1/2(6,600,000)(22,000^2) = 1.6 X… [cont.] Asked by Somes J - Thu Jan 10 19:28:07 2008 - - 1 Answers - 0 Comments A. Actually Tsiolkovsky's equation is Dv= Ve ln(m0/mf) [1] where: m0 - the initial total mass mf - the final total mass Ve - the effective exhaust velocity Dv is the delta-v in m/s (or ft/s) m0= 2,000,000 + 200,000 + 6,600,000 = 8,800,000 kg(check) mf = 2,000,000 + 200,000 = 2,200,000 kg (check) Dv= 22,000 ln (8,800,000/2,200,000 )= Dv=30,500 m/s (check) With energy/power calculations I have a problem. P= 0.5 mf Ve Dv P= 0.5 x 2,200,000 x 22,000 x 30,500 P= 0.5 x 2.2 E+6 x 22 E+3 x 30.5E +3 P=738 E+12 W P=738 TerraWats Answered by Edward - Fri Jan 11 14:54:30 2008 From Yahoo Answer Search: "V-2 rocket" |
