While the U. S. Air Force had started a missile development program in 1946, it was not seriously pursued until reports surfaced about the progress of Soviet Union rocket technology and the threat it posed to the US.

* While at lower speeds, air-breathing engines are very efficient, the efficiency ( Isp ) and thrust levels of air-breathing jet engines drop considerably at high speed ( above Mach 5 – 10 depending on the engine ) and begin to approach that of rocket engines or worse.

While Goodspeed and Mason search for the final two rockets, Hummel fires one of them but changes the coordinates at the last second causing the rocket to crash harmlessly out to sea.

While initially successful, this version proved unpopular with traditional Shadow fans because it depicted The Shadow using Uzi submachine guns and rocket launchers, as well as featuring a strong strain of black comedy and extreme violence throughout.

While there were many small rockets produced after years of research and experimentation, the first modern model rocket, and, more importantly, the model rocket motor, was designed in 1954 by Orville Carlisle, a licensed pyrotechnics expert, and his brother Robert, a model airplane enthusiast.

While serving at the Air Force Weapons Laboratory at Kirtland Air Force Base, Ed Roberts and Forrest M. Mims III decided to use their electronics background to produce small kits for model rocket hobbyists.

* 1943: While in the Luftwaffe, the first woman to pilot a rocket plane ( Messerschmitt Me 163 ).

While the rocket belt failed to be commercially developed, the rocket technology proved invaluable in future Bell programs.

While most of the study of airmail assumes transport by fixed-wing aircraft, the fields of balloon mail, dirigible mail, zeppelin mail, missile mail, and rocket mail are active subspecialties.

While testing an experimental rocket pack on 23 August 1954, Zura survived an explosion that killed his observer, John Hiebert.

While the terms ' solid rocket motor ' and ' solid rocket booster ' are often used interchangeably, in technical use they have specific meanings.

While serving in Vietnam as an intelligence officer, Mims continued his model rocket hobby.

* While pressurizing and launching the rocket, bystanders are kept at a safe distance.

This complement of transportable systems can be deployed to provide complete range capabilities at remote locations around the world. While Wallops Island is the prime location for range services, major sounding rocket campaigns have been supported at Poker Flat, Alaska ; Andoya, Norway ; and Kwajalein Island, Marshall Islands.

While it is theoretically possible for a mass that moves in one direction to have its momentum balanced by something other than a reaction mass ( e. g. see Nuclear photonic rocket ), there is no known theoretical mechanism for a mass to be moved one way while nothing moves the other way, at least in a flat spacetime.

While now defunct, the Florida Spaceport Authority did orchestrate several commercial launches from unused launch facilities at Cape Canaveral, Florida, including America's return to the moon with an unmanned orbiting vehicle aboard a Lockheed Martin rocket, the Athena ( then called the " Lockheed Launch Vehicle " or " LLV ").

While watching a 1950s science fiction movie, Bart and Lisa see a commercial for a model rocket kit and Bart orders it by using Homer's credit card number.

Like most of the Kroffts ' productions, the show's opening sequence provides the setup of its fanciful premise: While loading food into various compartments to prepare a rocket for an upcoming mission, Barney instructs Junior to hit the " lunch " button, but Junior mistakenly hits the " launch " button.

While playing as Sonic, players can collect rocket boots which allow him to fly through the air for a short time.

While the technical problems seemed to be solvable, the USAF required a winged design ( for cross range ) that led to the Shuttle as we know it today.

While the logo and mascot consist of the winged mammal, the bat is also synonymous with the Louisville Slugger baseball bat.

While not an orbital vehicle, the successful private SpaceShipOne suborbital spacecraft developed for the Ansari X Prize demonstrated that the problems of integrating a two-stage system, with a winged aircraft as the " lower half ", that can reach the edge of space are not insurmountable.

While working with the Patriot, he called himself " Jim Crow " and wore a winged costume allowing him to fly.

While less famous, the An-24, An-26, An-30 and An-32 family of twin turboprop, high winged, passenger / cargo / troop transport aircraft are important for domestic / short-haul air services particularly in parts of the world once led by Communist or former Communist governments.

While some other insects, such as fleas, also lack wings, these are descended from winged insects and have lost them during the course of evolution.

While the first three groups formed a monophyletic group, the Entognatha, distinguished by having mouthparts submerged in a pocket formed by the lateral and ventral parts of the head capsule, the Thysanura appeared to be more closely related to winged insects.

* Egg roll – While native Chinese spring rolls have a thin crispy skin with mushrooms, bamboo, and other vegetables inside, the Westernized version ( specifically the version found in such American Northeast metro areas as Boston and New York ) uses a thick, fried skin stuffed with cabbage and usually bits of meat or seafood ( such as pork or shrimp ), but no egg.

While the adapter was only made to work on the two-port version, modifications can be made to the four-port to make it line-compatible.

While the creator of the NES version would be restricted from making a competitive version of an NES game, the original arcade copyright holder was not precluded from licensing out rights for a home version of an arcade game to multiple systems.

While the scientific community was once divided between supporters of the Big Bang and those of alternative cosmological models, most scientists became convinced that some version of the Big Bang scenario best fit observations after the discovery of the cosmic microwave background radiation in 1964, and especially when its spectrum ( i. e., the amount of radiation measured at each wavelength ) was found to match that of thermal radiation from a black body.

While the Browns excelled on defense, Cleveland's winning ways were driven by an offense that employed Brown's version of the T formation, which emphasized speed, timing and execution over set plays.

While the standard rules allow hopping over only a single adjacent occupied position at a time ( as in checkers ), this version of the game allows pieces to catapult over multiple adjacent occupied positions in a line when hopping.

While a few short-lived DOS based EDuke projects emerged, it was not until the release of EDuke32, an extended version of Duke3D incorporating variants of both Fowler's Microsoft Windows JFDuke3D code and Saettler's EDuke code, by one of 3D Realms ' forum moderators in late 2004 that EDuke's scripting extensions received community focus.

While this clarification is not overtly stated in the Cities and Knights rule book, it is enforced in the online version of the game.

While those two leagues focused on baseball, it may be football that produced the first version of the hobby.

E. W. Gilbert's version ( 1958 ) of John Snow ( physician ) | John Snow's 1855 map of the Soho cholera outbreak showing the clusters of cholera cases in the London epidemic of 1854 While the basic elements of topography and theme existed previously in cartography, the John Snow map was unique, using cartographic methods not only to depict but also to analyze clusters of geographically dependent phenomena.

While Greek fire remained a potent weapon, its limitations were significant when compared to more traditional forms of artillery: in its siphon-deployed version, it had a limited range, and it could be used safely only in a calm sea and with favourable wind conditions.

While not featuring the censoring mosaics of the original Japanese version, the US release of La Blue Girl was edited during the initial VHS release and all scenes featuring Miko's companion Nin-Nin engaged in a sexual act were removed, probably to avoid the charge of pedophilia, in spite of the fact that the character is not a minor but a dwarf ninja.

While the original Karaoke Revolution was also eventually released for the Microsoft Xbox console in late 2004, the new online-enabled version included the ability to download additional song packs through the console's exclusive Xbox Live service.

While the single player tile matching game mahjong solitaire is familiar in the West, in Asia it is the four-player table version which holds predominance and has little in common with the solitaire version other than using the same tiles.

While humanizing and questioning him, Stirling gives credit to Bloch for helping to break through the monotonous methodological alternance between positivism and narrative history, creating a new, synthetic version of the historical practice that has since become so ingrained in the discipline that it is typically overlooked.

While the Victorian version of the show drew on the morality of its day, the Punch & Judy College of Professors considers that the 20th-and 21st-century versions of the tale have evolved into something more akin to a primitive version of The Simpsons, in which a bizarre family is used as vehicle for grotesque visual comedy and a sideways look at contemporary society.

While it was being repaired, Rickenbacker's UK distributor Rose Morris gave Lennon a model 1996 ( the export version of a 325, available exclusively in a red finish and with an F-hole ).

" While listening to The Today Show, musician Stevie Wonder heard a demonstration of the device and purchased the first production version of the Kurzweil Reading Machine, beginning a lifelong friendship between himself and Kurzweil.

While Waits has played the song live a number of times, an official version would not be released until 2007.

While the anime series was in production, two very different manga retellings were also developed and released: a shōnen version of the story entitled The Vision of Escaflowne and a shōjo retelling titled Hitomi — The Vision of Escaflowne.