اعتقد و الله اعلم هو هوائى لاحد اجهزه الطائره الاليكترونيه .. ( فى الطائرات القديمه قد يكون لتحديد و قياس المسافه للاهداف .. الله اعلم )

تقييم + لمشرفنا المحترم
فى الطائرات يستخدم تحديدا لقياس سرعه الهواء
و لكن لى سؤال ..
الايكون تحديد السرعه له ارتباط بطريقه ما بقياس مسافه الاهداف ؟؟ كفائده اضافيه من الهوائى ؟؟ و شكرا
It is widely used to determine the airspeed of an aircraft and to measure air and gas velocities in industrial applications

Pitot tubes on aircraft commonly have heating elements called pitot heat
to prevent the tube from becoming clogged with ice. The failure of
these systems can have catastrophic consequences, as in the case of Austral Líneas Aéreas Flight 2553

نظريه عمله
The dynamic pressure, then, is the difference between the stagnation pressure and the static pressure. The static pressure is generally measured using the static ports
on the side of the fuselage. The dynamic pressure is then determined
using a diaphragm inside an enclosed container. If the air on one side
of the diaphragm is at the static pressure, and the other at the
stagnation pressure, then the deflection of the diaphragm is
proportional to the dynamic pressure, which can then be used to
determine the indicated airspeed of the aircraft. The diaphragm arrangement is typically contained within the airspeed indicator, which converts the dynamic pressure to an airspeed reading by means of mechanical levers.

شكرا لمشرفنا العزيز
و لكن لى سؤال ..
الايكون تحديد السرعه له ارتباط بطريقه ما بقياس مسافه الاهداف ؟؟ كفائده اضافيه من الهوائى ؟؟ و شكرا

هذه هى وظيفته
فى الميج انف الطائره هو فتحه دخول الهواء .. و ايضا عباره عن منظم لدخول الهواء الى المحرك طبقا للسرعات المختلفه ( هذا الانف يتحرك للامام و الخلف لتنظيم كميه دخول الهواء الى air intakes )
و بالتالى هذا pitot tube هو جزء من تنظيم عمل المحرك بارسال البيانات له لتنظيم كميه دخول الهواء على السرعات المختلفه

The fuselage is semi-monocoque
with an elliptical profile and a maximum width of 1.24 m (4 ft 1 in).
The air flow to the engine is regulated by a cone in the air intake. On
early model MiG-21s, the intake cone has three positions. For speeds up
to Mach 1.5 the cone is fully retracted to the maximum aft position. For
speeds between Mach 1.5 and Mach 1.9 the cone moves to the middle
position. For speeds higher than Mach 1.9 the cone moves to the maximum
forward position. On the later model MiG-21PF, the intake cone moves to a
position based on the actual speed. The cone position for a given speed
is calculated by the UVD-2M system using air pressures from in front
and behind the compressor of the engine. On both sides of the nose there are gills to supply the engine with more air while on the ground and during takeoff. In the first variant of the MiG-21, the pitot tube is attached to the bottom of the nose. After the MiG-21P variant, this tube is attached to the top of the air intake.
مصدر
http://en.wikipedia.org/wiki/Mikoyan-Gurevich_MiG-21