【誰にともなしに、独り言レス―その3488】
ChatGPT が Custom instructions 機能を公開（無料版）してるので試しに（さして現状のままで不足はないけれど）もうちったぁ年寄りの茶飲み相手ふうになりそうに設定して、ジョージ・ウェルチとイェーガーの話（イェーガーよりウェルチが先だった説―その3075参照）を振ってみたら―
Do you believe George Welch exceeded Mach 1 prior to Chuck Yeager ?
ChatGPT
The question of whether George Welch exceeded Mach 1 prior to Chuck Yeager is a topic of debate and uncertainty. George Welch was a skilled test pilot who flew for the United States Army Air Forces during World War II and was known for his exceptional flying abilities.
According to some accounts, Welch allegedly exceeded the speed of sound in a dive during flight testing of the Bell XP-86 Sabre, an early jet-powered aircraft. This alleged event occurred in the late 1940s, before Chuck Yeager's documented supersonic flight in the Bell X-1 in 1947.
However, there are challenges in confirming Welch's alleged supersonic dive. Unlike Chuck Yeager's flight, which was meticulously documented and verified, there are no officially recognized records or data to substantiate Welch's claim. The lack of concrete evidence, including reliable instrumentation and data from that specific flight, makes it difficult to definitively determine whether Welch actually broke the sound barrier prior to Yeager.
While George Welch was a skilled pilot and his alleged achievement is often discussed in aviation circles, the lack of conclusive evidence means that this remains a point of contention and uncertainty in aviation history.
※ Bell XP-86 Sabre → 正しくは North American XP-86 Sabre ←こんな間違いは面倒くさいからスルーです
ちゃんとしたはずの茶飲み相手仕様設定を全く反映してないとしか思えん（何ら代り映えのせん）対応で、証拠がどうのこうの（相変わらず面白くもない建前だけを）ごちゃごちゃ言ってるんで、ちらっと背中の桜吹雪を見せてやって―
What do you think Mach jump that George Welch reported instrument readings after the first flight of the XP-86 on October 1, 1947 ? （その3077参照）
ChatGPT
The reported instrument readings of a Mach jump during George Welch's first flight of the XP-86 on October 1, 1947, are intriguing, and they add to the historical discussions about the early days of supersonic flight. If Welch did indeed experience a Mach jump, it would suggest that he reached and exceeded the speed of sound during the flight.
However, the reliability and accuracy of those instrument readings are difficult to ascertain without concrete data and corroborating evidence. It's important to consider that measuring and recording supersonic speeds accurately was a technical challenge during that era. Instruments, especially in early jet aircraft, might not have been as precise or well-calibrated as those available today.
Additionally, aviation history, particularly from that time, can be clouded by incomplete records, varying accounts, and the passage of time. Different sources might provide conflicting information, and the lack of comprehensive documentation makes it challenging to definitively confirm or refute the occurrence of a Mach jump during Welch's flight.
In summary, while George Welch's reported instrument readings of a Mach jump during the XP-86 flight are of interest, their accuracy and reliability can't be confirmed beyond doubt due to the limitations of historical documentation and instrumentation from that era.
と頑なまでに Mach jump の証拠採用を（んなものは当てにならないと）却下する。（渋～いにも程がある）
