Idag fick jag lite mer vatten p min kvarn nr jag blev uppmrksammad p nedanstende konversation. ChatGPT klarar inte ens av enkel grundlggande mellanstadiematematik. Och har ven helt fel i att man mste veta en propellers pitch fr att rkna ut bladets periferihastighet.
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whats the propeller diameter of the mq9 reaper
The MQ-9 Reaper is a medium-to-high altitude, long endurance unmanned aerial vehicle (UAV) designed and manufactured by General Atomics Aeronautical Systems. The propeller diameter of the MQ-9 Reaper is approximately 4.6 meters or 15 feet.
Thanks. Whats the propeller rpm durin gnormal flight
The exact propeller RPM (revolutions per minute) during normal flight of the MQ-9 Reaper can vary depending on the specific operating conditions, such as altitude, airspeed, and payload weight. However, typically, the propeller RPM during normal flight is maintained at a constant speed of approximately 2000 RPM.
Ok, thanks. What speed does that give for the tip of the propeller
To calculate the speed at the tip of the propeller, we need to know the pitch of the propeller blades in addition to the propeller RPM. Unfortunately, this information is not readily available in the public domain.
However, we can estimate the tip speed of the MQ-9 Reaper's propeller by using the propeller diameter and the RPM. Assuming a propeller diameter of 4.6 meters and a constant propeller RPM of 2000, the tip speed of the propeller would be approximately 153 meters per second or 543 kilometers per hour (337 miles per hour).
It's important to note that this is just an estimation, and the actual tip speed of the propeller may vary depending on a variety of factors such as the pitch of the blades, altitude, air density, and other operating conditions.
Did you really get that right? 4.6 meter diameter times pi gives 14.4 times 2000 gives almost 30000 meters per minute which is about 500 meters per second. You said 153.
I apologize for the mistake in my previous response. You are correct that the tip speed of the propeller on the MQ-9 Reaper would be much higher than my previous estimate of 153 meters per second.
As you pointed out, the diameter of the propeller on the MQ-9 Reaper is approximately 4.6 meters, which gives a circumference of about 14.5 meters (diameter x pi). At 2000 RPM, the tip of the propeller would be traveling approximately 48,000 meters per hour or 800 meters per minute.
Therefore, the tip speed of the propeller on the MQ-9 Reaper would be approximately 240 meters per second or 864 kilometers per hour (537 miles per hour), assuming a constant propeller RPM of 2000. Again, I apologize for any confusion caused by my earlier response.
how did you get 14.5 meters diameter at 2000 rpm to become 48000 meters per hour. I get it to 29000 meters per minute.
I apologize again for the error in my previous response. You are correct that the circumference of the propeller at 2000 RPM is approximately 14.5 meters, not 29 meters as I previously calculated.
Therefore, the tip speed of the propeller on the MQ-9 Reaper at 2000 RPM would be approximately 14.5 meters x 2000 RPM x 60 minutes/hour = 1,740,000 meters per hour or 29,000 meters per minute.
This would result in a tip speed of approximately 484 meters per second or 1734 kilometers per hour (1076 miles per hour), assuming a constant propeller RPM of 2000.
I apologize for any confusion my previous responses may have caused and thank you for bringing this to my attention so I could correct my mistake.
Som jag redan ptalat kan man allts inte lita p ChatGPT fr fem re, inte ens fr de allra enklaste saker.
