- Категория: Физика
- Публикувана на 01 Юли 2009
- Написана от Administrator
Преминаването на звуковата бариера се оказва, че не е само звуков феномен. Нова снимка на военен изстребител на САЩ показва, че преминаването на Мах 1 (звуковата бариера равна на 1192км/ч.) може да бъде видяна като красив визуален ефект.
Тези широко разпространени нови снимки, показват преминаването на свръхзвуковата бариера на F-22 Raptor самолети над палубата на самолетоносача USS John C. Stennis. Снимките са направени при тренировъчни полети в залива на Аляска на 22 Юни 2009 г.
Визуалният феномен, който не винаги се наблюдава, е бил заснет първо при детониране на атомна бомба, а след това и при изстрелване на совалки и космически кораби. При мисия на Аполо 11 до луната през 1969г. са направени и първите снимки.
Феноменът още не е изучен. Учените го наричат конус от пара, ударна яка или ударно яйце или Prandtl–Glauert.
Ето какво мислят учените, че се случва на практика:
Слой от водни капки може да остане в капан между двете повърхности на самолета притискани от високото налягане. При влажна условия водната кондензация се събира между двата гребена на звуковите вълни, генерирани от самолета. Този ефект не е задължително да съвпада с преминаване на звуковата бариера .
Използвани материали: Какво прилича на свръхзвукова вълна
http://news.yahoo.com/s/livescience/20090630/sc_livescience/whatsupersoniclookslike
Off the coast of Pusan, South Korea, July 7, 1999 -- An F/A-18 Hornet assigned to Strike Fighter Squadron One Five One (VFA-151) breaks the sound barrier in the skies over the Pacific Ocean. VFA-151 is deployed aboard USS Constellation (CVN 64).
SOUTHWEST ASIA -- A B-1 Lancer banks left just before a rollover during an open house flyby here Jan. 16. More than 1,300 people enjoyed the U.S. Air Force, Navy and Royal Marine-hosted open house that showcased various aircraft.
(Oct. 15, 2006) - An F/A-18F Super Hornet assigned to the "Screaming Eagles" of Strike Fighter Squadron One Two Two (VFA-122), flown by Lt. Matt Turner, pushes the limits of the sound barrier during a performance at the Miramar Air Show on board Marine Corps Air Station Miramar. This year's air show was themed "The Sound of Freedom: Celebrating the Blue Angels' 60th Anniversary", showcasing military and civilian aircraft and static displays.
(Oct. 13, 2006) - An F/A-18F Super Hornet assigned to the "Screaming Eagles" of Strike Fighter Squadron One Two Two (VFA-122), flown by Lt. Matt Turner, pushes the limits of the sound barrier during a performance at the Miramar Air Show on board Marine Corps Air Station Miramar. This year's air show was themed "The Sound of Freedom: Celebrating the Blue Angels' 60th Anniversary", showcasing military and civilian aircraft and static displays.
(Sept. 11, 2006) - An F/A-18F Super Hornet assigned to Carrier Air Wing Five breaks the sound barrier during an air power demonstration practice aboard USS Kitty Hawk (CV 63). Currently underway in the 7th Fleet area of responsibility (AOR), Kitty Hawk demonstrates power projection and sea control as the U.S. Navy's only permanently forward-deployed aircraft carrier.
An F/A-18C Hornet, assigned to the "Golden Dragons" of Strike Fighter Squadron One Nine Two (VFA-192), breaks the sound barrier near the conventionally powered aircraft carrier USS Kitty Hawk (CV 63). Kitty Hawk and embarked Carrier Air Wing Five (CVW-5) are currently returning to their homeport after a scheduled deployment in the 7th Fleet area of responsibility
An F/A-18F Super Hornet, assigned to the "Diamondbacks" of Strike Fighter Squadron One Zero Two (VFA-102), breaks the sound barrier during a fly-by over the conventionally powered aircraft carrier USS Kitty Hawk (CV 63). Kitty Hawk and embarked Carrier Air Wing Five (CVW-5) are currently conducting operations in the Philippine Sea.
An F/A-18F Super Hornet, assigned to the "Diamondbacks" of Strike Fighter Squadron One Zero Two (VFA-102), breaks the sound barrier during a fly-by over the conventionally powered aircraft carrier USS Kitty Hawk (CV 63). Kitty Hawk and embarked Carrier Air Wing Five (CVW-5) are currently conducting operations in the Philippine Sea.
An F-14B Tomcat, assigned to the "Swordsmen" of Fighter Squadron Three Two (VF-32), breaks the sound barrier during the supersonic fly-by portion of an air power demonstration performed by Carrier Air Wing Three (CVW-3), for the Sailors and Marines aboard USS Harry S. Truman (CVN 75). The Harry S. Truman Carrier Strike Group was recently relieved after completing nearly four months in the Persian Gulf in support of the Global War on Terrorism.
An F/A-18C Super Hornet from Strike Fighter Squadron Two Seven (VFA-27) breaks the sound barrier during an air power demonstration conducted by Carrier Air Wing Five (CVW-5) and USS Kitty Hawk (CV 63). Currently participating in the annual exercise Foal Eagle, Kitty Hawk and CVW-5 demonstrate their commitment to the Republic of Korea/U.S. alliance through joint training. Under way in the 7th Fleet area of responsibility (AOR), Kitty Hawk demonstrates power projection and sea control as the U.S. Navy's only permanently forward-deployed aircraft carrier, operating from Yokosuka, Japan.
An F/A-18 Hornet, assigned to the “Marauders” from Strike Fighter Squadron Eight Two (VFA-82), piloted by Lt. Cmdr. James Montgomery, of Yukon, Okla., reaches the sound barrier during a supersonic flyby over USS Enterprise (CVN 65). Enterprise is one of seven aircraft carriers involved in Summer Pulse 2004. Summer Pulse 2004 is the simultaneous deployment of seven aircraft carrier strike groups (CSGs), demonstrating the ability of the Navy to provide credible combat power across the globe, in five theaters with other U.S., allied, and coalition military forces. Summer Pulse is the Navy’s first deployment under its new Fleet Response Plan (FRP).
An F/A-18 Hornet, assigned to the "Bulls" of Strike Fighter Squadron Thirty Seven (VFA-37) performs a sonic boom by breaking the sound barrier during a Friends and Family Day Cruise aboard USS Harry S. Truman (CVN 75).
An F-14B Tomcat assigned to the “Swordsmen” of Fighter Squadron Thirty Seven (VF-32) reaches the sound barrier during a low altitude super sonic fly by, during an air wing flight demonstration for the crew aboard USS Harry S. Truman (CVN 75). Truman and Carrier Air Wing Three (CVW-3) are currently deployed conducting combat missions in support of Operation Iraqi Freedom, the multinational coalition effort to liberate the Iraqi people, eliminate Iraq's weapons of mass destruction and end the regime of Saddam Hussein.
