In aviation, time and some other indicatorsthey measure, using aviation clocks, chronometers, stopwatches, which operate according to the principle of mechanical oscillations of a pendulum. The mechanism of such devices is driven by the flow of a certain stock of mechanical energy contained in the spring. Popular variants installed on airplanes are ASFS-1 watches, which include a conventional time chronometer, a stopwatch and a flight period accounting mechanism.
Application
Considered modifications are intended for the following purposes:
- Displays the current time (hours / minutes / seconds).
- For a separate fixation in hours and minutes (modifications ASFS-1M, ASFS-1MN).
- The flight time of the flight of an airplane, helicopter or other aircraft is counted.
- Keep records of small time intervals in minutes and seconds.
Секундомерная шкала на модели АЧС-1 рассчитана на 60 minutes, on variations of ASF-1M and MN - for 30 minutes. The second hand is located in the center, simultaneously serves as a stopwatch and works in this mode only if the stopwatch is on.
The usual daily rate is functioning.nonstop, and the device that determines the flight time, and the stopwatch have separate controls. On the front of the device there are scales (3 pcs.) And head-knobs (2 pcs.).
Purpose of the left handle
The left head, which is equipped with an aviation clock, performs several functions:
- Serves for winding.
- Designed to move the arrows of the main daily element.
- Used for running start and deactivation of the flight time mechanism.
Максимальный завод пружины гарантирует работу на 72 hours In order to achieve optimum accuracy, it is advisable to start the device every two days. The time flight mechanism is controlled by pressing the knob on the left, with the first action it is activated, a red color appears in the signal gap.
Pressing the head again turns off the flight.time. The arrows record the presence of the aircraft in the air, the scale indicates this in red and white. The next (third) press returns the arrows to the initial position (to “12”), a white color is displayed in the signal niche.
What is the right head for?
Aviation clock with stopwatch is adjusted with the right handle when starting and stopping the daily mechanism, stopwatch, as well as to return the minute and second hands to the initial position.
The cycle time of the stopwatch is completestage through three taps. At the first touch, the stopwatch mechanism is activated. The second pressing stops it, and the third - returns the arrows to the starting position.
Features
Aviation clock equipped with electric heatingwith thermostat that maintains a temperature range of 20 degrees. The element is connected to the onboard network with direct current. The recommended switching temperature is below five degrees. Before the start of the flight, check the watch factory, set an exact time indicator on it.
To do this is required when overcomingthe second hand of phase “12” scroll the head clockwise to the right, stopping the turn. Next you need to remove the left handle until it stops, rotating it in a circle from right to left, set the exact time. After setting the current parameters is made, the left head is returned to its original position. To start the clock, the right-hand knob is turned from left to right.
After permission to take off is obtained, the flight time mechanism should be activated, and after landing, turn it off by pressing the left knob.
Technical indicators
Aviation mechanical watches (ASF) have the following characteristics:
- Covering the dial and hands - white paint or reflective mass.
- Accuracy accuracy per day - ± 20 sec.
- The duration of the full plant mechanism - 72 hours.
- The recommended frequency of winding is every two days.
- Heating circuit voltage (DC.) - 27 V.
- Electrical heating resistance - 50 ohms.
- The power of the built-in backlight is 5.5 V from the mains 400 Hz.
- The weight of the device is 650-750 grams, depending on the model.
- Dimensions of AChS-1 - 85 * 91.4 mm.
Item Description
Авиационные бортовые часы состоят из a kind of engine (clockwork springs), devices responsible for the current time, a stopwatch, a flight period, a course, as well as a regulator, controls and electric heating with a thermal controller, built-in backlight (AChS-1MN).
The current time device is workingnon-stop from the engine, and the flight time and stopwatch are activated and deactivated autonomously. The dial with scales (3 pcs.) Is intended for viewing indications:
- For the testimony of the current time - the main (large) scale.
- Sector "Flight Time" - for fixing the flight time.
- Sector "SEC" - for counting the functions of the stopwatch.
The clock is controlled by two heads (knobs).
Wrist modification
Plant "Lightning" in Chelyabinsk produces a uniqueThe project is an aviation wrist watch, which is an exact copy of the ASF instrument. The dial of the compact model completely copies the design of the original aviation watches, is equipped with the appropriate scales, which make it possible to measure the time intervals in hours, minutes and seconds.
The material for the watch case is stainlesssteel. The new lineup has developed two modifications: with a special black PVD-coated and uncoated. On the back cover you can apply an individual image, a memorable inscription, a wish, using the engraving method.
Such an original gift will delight anyonea person associated with aviation or just a connoisseur of quality things. The wrist version most accurately resembles an aviation watch, which is mounted on virtually all types of domestic aircraft.
Conclusion
Завершая обзор авиационных часов, можно отметить, that it is a reliable, unpretentious device that ensures maximum accuracy of the current time, flight period parameters, which has a stopwatch function. Due to high quality indicators, the considered device and its modifications have been used in aviation for many years.
The flight clock with a stopwatch does not require muchmaintenance, one winding lasts for three days, and electrical heating ensures their normal operation at any outdoor temperature. On the Internet you can find a lot of ads on the sale / purchase of models of ASF, while their price is quite high. Additionally, the quality of the device and their popularity are confirmed by a wrist copy, which is in great demand and exactly repeats the design and design of the on-board variation.
