4 measurements spanning 9 days, net +56. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 382–454 and does not start at zero.
Measurement log — every subscribers count we have recorded
Measured (UTC)
Subscribers
Change
15 Aug 2026, 10:47
446
+36
7 Aug 2026, 04:20
410
+20
6 Aug 2026, 20:05
390
no change
6 Aug 2026, 16:41
390
first reading
Engagement
20 posts held, back to 29 June 2026 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 1 pageof Telegram’s post history, 20 posts per page.
ERR · 30 days
46.8%
avg views ÷ 446 subscribers
Avg views / post
209
14 posts measured
Reaction rate
3.80%
reactions ÷ views · ER floor
Posts in window
16
of 20 held
ERR is average views per post over the last 30 days divided by subscribers, the definition TGStat uses, so this figure is comparable with the one you will see elsewhere. It falls structurally as a channel grows: a high ERR on a small channel and a low one on a large channel describe reach mathematics, not quality. We publish the figure and the sample it came from and pass no verdict on it.
ER is defined industry-wide as (forwards + reactions + comments) ÷ views— note the denominator is views, not subscribers. Telegram’s public web preview carries views and reactions but not forward or comment counts, so the reaction rate above is the reactions term only and is therefore a floor: the true ER for this channel is higher by an amount we have not measured and will not estimate.
What these figures were computed from
Window
Rolling 30 days · latest post in window 6 August 2026
Posts held
20 (29 June 2026 – 6 August 2026)
Views total
2,922
Reactions total
111
Forwards / comments
not exposed by the public surface — not measured, not estimated
Readings taken
6 Aug 2026, 20:05 UTC
Views are a single reading per post, taken at the time above. A post published in the last day or two is still accumulating views, which pulls the 30-day average down slightly. That is a property of the standard definition rather than a fault in it, so we keep the definition rather than “correcting” the number into something nobody can reproduce.
Precision. Telegram publishes view counts on its public widget in short form — 8.12K, 3.7M — so any reading at or above 1,000 reaches us rounded to three significant figures, and only counts below 1,000 are exact. Averages and rates derived from them are shown to the same precision rather than to the unit: a figure like 3,701,250 would assert digits nobody measured.
Reaction counts are published per emoji and rounded the same way, so a total below 1,000 is exact and a larger one is a sum that may carry a rounded component from each emoji above 1,000. Because it is a sum, it does not look rounded — read a large reaction total as three significant figures per contributing emoji rather than as the figure it prints.
Reaction mix
130 reactions across 17 posts, in 11 distinct kinds. The most used accounts for 46.2% of them.
Every reaction kind recorded on the sample, most used first
Reaction
Count
Share
Share, drawn
❤🔥
60
46.2%
👍
22
16.9%
😎
12
9.23%
🤝
11
8.46%
❤
7
5.38%
🫡
7
5.38%
🙏
6
4.62%
🤩
2
1.54%
👌
1
0.769%
💯
1
0.769%
🔥
1
0.769%
No sentiment is inferred, and none should be read in. This table is ordered by count and by nothing else. Emoji do not carry stable meaning across languages or communities — 🙏 is thanks in one channel and mourning in another — so we publish which ones were pressed and how often, and pass no judgement on what an audience meant by them.
Precision. Telegram publishes reaction counts per emoji and short-forms each one — 4.34K, 1.2M — so any single kind at or above 1,000 reaches us at three significant figures, and only counts below 1,000 are exact. The shares above are ratios of those figures and carry the same error. This is also why the total here can differ slightly from a reaction total printed elsewhere on the page: both are sums of the same rounded parts, taken over samples with different edges.
Coverage. Reactions were read on 17 of the 20 sampled posts in this sample. Summed by Telegram’s own count on each post — not by adding up the per-emoji breakdown above — those same posts carry 130reactions in total: the kind of figure the paragraph above means by “a reaction total printed elsewhere on the page”.
Measured over the 20 most recent posts we hold, published 29 June 2026 to 6 August 2026, using the newest reading held for each. Telegram Stars are excluded: they are a payment, not a reaction, and they have their own section.
✈️ Boeing 737 Flight Manual
🔹آشنایی جامع با عملکرد و سامانههای اصلی بوئینگ ۷۳۷؛ از نحوه عملکرد هواپیما تا سیستمهایی که نقش مهمی در ایمنی، هدایت و کنترل پرواز دارند.
سرفصل ها شامل ؛
🔹 عملکرد بوئینگ ۷۳۷
🔹 سیستمهای هوایی
🔹 اتوپایلوت
🔹 سیستمهای ارتباطی
🔹 موتورها و APU
🔹 نمایشگرهای ابزار پروازی
🔹 مدیریت پرواز و ناوبری
🔹 سیستم سوخت رسانی
🔹 سیستم هیدرولیک
🔹 ارابه فرود
🔹 سیستمهای هشدار
#آموزش
#هوانوردی
————————————…
🔹نرخ صعود: ۲۱۰ متر بر ثانیه.
• تحلیل: نرخ صعود بسیار بالا، ابزاری حیاتی برای رسیدن سریع به ارتفاع هدف و خروج از وضعیت آسیبپذیر است.
🔹نسبت برآ به پسا (L/D): ۸.۵۸.
• تحلیل: این عدد نشان میدهد که فانتوم برخلاف هواپیماهای مدرن، هواپیما بسیار «آیرودینامیک و ظریف» نیست، بلکه یک «مبارز قدرتمند» است.
🔹بارگذاری بال (Wing Loading): ۳۸۰ کیلوگرم بر متر مربع.
• تحلیل: بارگذاری بال بالا، مانورپذیری در شعاع گردش را محدود می…
۳. عملکرد پروازی (Performance)
🔹حداکثر سرعت: ۲,۳۷۰ کیلومتر بر ساعت (در ارتفاع ۱۲,۰۰۰ متری) یا Mach 2.23.
• تحلیل: این سرعت خیرهکننده، فانتوم را به یک اینترسپتور (رهگیر) بیرقیب در عصر خود تبدیل میکرد.
🔹سرعت کروز: ۹۴۰ کیلومتر بر ساعت.
• تحلیل: سرعت کروز بالا به هواپیما اجازه میدهد بدون مصرف سوختِ بیش از حد، در مسافتهای طولانی مستقر شود.
🔹برد رزمی: ۶۸۰ کیلومتر
برد انتقالی (Ferry): ۲,۶۹۹ کیلومتر.
• تحلیل: تفاو…
۲.مشخصات پیشرانه
موتورها : ۲ عدد توربوجت General Electric J79-GE-17A.
🔹رانش (بدون پسسوز): ۵۲.۹۶ کیلونیوتون (هر موتور) و
رانش (با پسسوز): ۷۹.۳۸ کیلونیوتون (هر موتور).
• تحلیل: قدرت بسیار بالای موتورهای J79، نقطه قوت فانتوم است که اجازه میدهد با بدنه سنگین، به سرعتهای مافوق صوت دست یابد.
البته که به دلیل نبود فناوری کاهش دما در اگزوز ،حرارت خروجی بسیار بالاست و این ردپای حرارتی جنگنده را افزایش میدهد.
—————————…
بخش دوم شناسنامه فنی F-4 Phantom II
۱. مشخصات عمومی و ابعاد (General Characteristics)
🔹طول: ۱۹.۲ متر
دهانه بال: ۱۱.۷ متر
ارتفاع: ۵ متر.
• تحلیل: ابعاد بزرگ بدنه، نشاندهنده نیاز به ظرفیت بالای سوخت و تجهیزات الکترونیکی در آن دوران است.بعلاوه سطح مقطع راداری بالاتر اما توان حمل تسلیحات بیشتر.
🔹مساحت بال: ۴۹.۲ متر مربع.
• تحلیل: مساحت بال در برابر وزن بالا، تعادلی بین تولید برآ و کاهش پسا ایجاد کرده است.
🔹نسبت…
برد رزمی (Combat range): شعاع عملیاتی با در نظر گرفتن پروفیل پروازی خاص (اوج، کروز، رزمی، بازگشت).
برد جابهجایی (Ferry range): حداکثر فاصله قابل پیمایش با مخازن سوخت اضافی و بدون محموله جنگی.
سقف عملیاتی (Service ceiling): ارتفاعی که در آن نرخ صعود به حد مشخصی (معمولاً ۱۰۰ فوت در دقیقه) کاهش مییابد.
نرخ صعود (Rate of climb): توانایی هواپیما در افزایش انرژی پتانسیل (ارتفاع) در واحد زمان.
نسبت برآ به پسا (Lift-to…
وزن خالی (Empty weight): وزن سازه اصلی و سیستمهای ثابت هواپیما؛ معیاری برای سنجش کارایی مهندسی سازه.
وزن ناخالص (Gross weight): وزن کل در شرایط عملیاتی پایه که پایه محاسبات تعادل و پایداری است.
حداکثر وزن برخاست (Max takeoff weight): حد آستانه تحمل سازه برای ایجاد نیروی برآی کافی در لحظه دوران (Rotation).
حداکثر وزن نشست (Maximum landing weight): حد مجاز وزن برای جلوگیری از تنشهای تخریبی به ارابه فرود در لحظه بر…
بخش اول ، تعاریف :
خدمه (Crew): تعداد اپراتورهای انسانی مورد نیاز برای مدیریت سیستمهای اویونیک و ناوبری.
طول (Length): بعد طولی کلی بدنه که بر پایداری طولی و مرکز ثقل (CG) اثرگذار است.
دهانه بال (Wingspan): فاصله عرضی نوک بالها که تعیینکننده میزان پسا القایی (Induced Drag) است.
عرض (Width): ابعاد فیزیکی هواپیما جهت محاسبات فضای پارکینگ یا انبارش در عرشه ناو.
ارتفاع (Height): فاصله عمودی که در محاسبات پایداری …
چگونه شناسنامه فنی یک هواپیما را بخوانیم؟
در این رشته پست، میخواهیم:
الفبای خواندن مشخصات فنی جنگندهها را یاد بگیریم و با یک مثال واقعی و کلاسیک، یعنی اف-۴ فانتوم ۲ (F-4 Phantom II)، این پارامترها را تحلیل کنیم.
—————————————————
@SIZAN_ENG|کانال رسمی تیم سیزان
Showing the 12 most recent of 20 posts we hold for @SIZAN_ENG. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.
Polls
The poll we hold for this entry, as Telegram rendered it when we read the post. A poll’s figures keep moving after that, so each one is dated.
The shares total 116%, above 100: this poll accepts more than one answer per voter. No per-option vote count is published, so the number of voters who chose each option is not derivable and is not shown.
Percentages only — there are no per-option vote counts here, because Telegram publishes none.The public post preview gives each option’s share and a single voter total, and nothing else. Multiplying one by the other would produce a per-option tally that looks measured and is not: the shares are rounded to whole numbers before we ever see them. We print what was published and leave the column that does not exist empty.
The shares need not add up to 100.Rounding alone puts many polls at 99 or 101. A poll that allows more than one answer per voter runs well past 100 by design, and several here do. The bars are drawn against a fixed 100% track at each option’s own percentage rather than normalised to the total, so a poll that exceeds it shows that it does instead of being quietly rescaled.
Read from the 20 most recent posts we hold, published 29 June 2026 to 6 August 2026. Telegram labels each poll by kind — an anonymous poll, a quiz, a closed set of final results — and that label is reproduced rather than paraphrased.
Citation-graph rank
Citation-graph rank — 688,112 of 1,481,217entries in the measured graph. A weighted position computed from the forward and mention edges below — republished posts weigh more than named mentions — and recomputed periodically, over the whole graph. Published only as this ordinal position, never as a score: a position is a fact, and a score printed beside one channel’s name would read as a verdict this register does not make. The two counts beneath stay separate for the same reason mentions are never summed with forwards anywhere else on this page — a named-by count costs nothing to manufacture. The top 100 by this measure, or how it is computed.
Forward network
Republished by
Channels on the register that have forwarded this channel's posts into their own feed.
Built only from forwarded posts we have actually read, on both sides. Coverage is early and deliberately incomplete: a missing link means we have not read the post that would prove it, never that the relationship does not exist. Counts are distinct forwarded posts observed, so they only ever go up as we read more.
Mentions
Named by 3 registered channels — every channel on the register whose own posts have named this one, by its current username or any other username it currently holds, merged from two separately captured readings of the same fact so a namer caught by only one of them is not missed and a namer both caught is not counted twice. A username this channel has since dropped is not matched — that handle may belong to someone else now, and crediting today’s namer to yesterday’s owner would misattribute it.
Named by
Channels on the register whose posts name this channel's handle.
A mention is a weaker signal than a forward and is counted separately for that reason — naming a channel is not republishing it, and a handle in a post body is easy to place deliberately. The post counts beside each row below are distinct posts in which the handle appeared, from posts we have read on both sides — the “Named by N registered channels” figure above is a different count, of distinct NAMING CHANNELS rather than posts, and is not the sum of the rows under it.
Cite this entry
A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 15 August 2026 — this
entry's latest reading, not the date you are reading this.
“گروه مهندسی سیزان” (@SIZAN_ENG), 446 subscribers as measured 15 August 2026. Telegram Register, tgregister.com/channel/SIZAN_ENG.
Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.