This question is based on several serious misconceptions.

• R-7 launches never get postponed due to weather.

Actually, they do. "The launch of the Soyuz 2-1A modernized carrier rocket, scheduled for Wednesday evening, has been put off again, this time due to bad weather conditions at an altitude of more than 11 kilometers," the source said.

• The only ICBMs the USA used for crewed flights were the Atlas for several Mercury missions and the Titan II for the Gemini program.

Actually, there was one other. The Redstone was an ICBM (well, an IRBM).

• The only ICBM-derived rocket NASA is currently using for (uncrewed) spaceflight is the Atlas V, afaik.

Actually, the Atlas V is not an ICBM but a purpose-built space launcher.

Additionally, the US stopped using liquid-fueled ICBMs in 1987. All current US ICBMs are solid-fueled. Attempts have been made to use derivatives of these ICBMs as space launchers but they were not notably successful.

A general statement on winds and launching is

You choose the wind conditions to design your system for based on a statistical study of the wind conditions at the launch site, your tolerance for scrubbing based on winds, and your budget. Then on the day of launch you measure the winds of the day to ensure that the design criteria are not exceeded.

Source

No economical system could be designed to launch in all weather conditions.

This question is based on several serious misconceptions.

• R-7 launches never get postponed due to weather.

Actually, they do. "The launch of the Soyuz 2-1A modernized carrier rocket, scheduled for Wednesday evening, has been put off again, this time due to bad weather conditions at an altitude of more than 11 kilometers," the source said.

• The only ICBMs the USA used for crewed flights were the Atlas for several Mercury missions and the Titan II for the Gemini program.

Actually, there was one other. The Redstone was an ICBM (well, an IRBM).

• The only ICBM-derived rocket NASA is currently using for (uncrewed) spaceflight is the Atlas V, afaik.

Actually, the Atlas V is not an ICBM but a purpose-built space launcher.

• To address "Why don't (sic) the USA use ICBMs for crewed and other more important flights?":

The US stopped using liquid-fueled ICBMs in 1987. All current US ICBMs are solid-fueled. Attempts have been made to use derivatives of these ICBMs as space launchers but they were not notably successful.

A general statement on winds and launching is

You choose the wind conditions to design your system for based on a statistical study of the wind conditions at the launch site, your tolerance for scrubbing based on winds, and your budget. Then on the day of launch you measure the winds of the day to ensure that the design criteria are not exceeded.

Source

No economical system could be designed to launch in all weather conditions.

This question is based on several serious misconceptions.

• R-7 launches never get postponed due to weather.

Wrong. "The launch of the Soyuz 2-1A modernized carrier rocket, scheduled for Wednesday evening, has been put off again, this time due to bad weather conditions at an altitude of more than 11 kilometers," the source said.

• The only ICBMs the USA used for crewed flights were the Atlas for several Mercury missions and the Titan II for the Gemini program.

Wrong. The Redstone was an ICBM (well, an IRBM).

• The only ICBM-derived rocket NASA is currently using for (uncrewed) spaceflight is the Atlas V, afaik.

Wrong. The Atlas V is not an ICBM but a purpose-built space launcher.

Additionally, the US stopped using liquid-fueled ICBMs in 1987. All current US ICBMs are solid-fueled. Attempts have been made to use derivatives of these ICBMs as space launchers but they were not notably successful.

A general statement on winds and launching is

You choose the wind conditions to design your system for based on a statistical study of the wind conditions at the launch site, your tolerance for scrubbing based on winds, and your budget. Then on the day of launch you measure the winds of the day to ensure that the design criteria are not exceeded.

Source

No economical system could be designed to launch in all weather conditions.

This question is based on several serious misconceptions.

• R-7 launches never get postponed due to weather.

Actually, they do. "The launch of the Soyuz 2-1A modernized carrier rocket, scheduled for Wednesday evening, has been put off again, this time due to bad weather conditions at an altitude of more than 11 kilometers," the source said.

• The only ICBMs the USA used for crewed flights were the Atlas for several Mercury missions and the Titan II for the Gemini program.

Actually, there was one other. The Redstone was an ICBM (well, an IRBM).

• The only ICBM-derived rocket NASA is currently using for (uncrewed) spaceflight is the Atlas V, afaik.

Actually, the Atlas V is not an ICBM but a purpose-built space launcher.

Additionally, the US stopped using liquid-fueled ICBMs in 1987. All current US ICBMs are solid-fueled. Attempts have been made to use derivatives of these ICBMs as space launchers but they were not notably successful.

A general statement on winds and launching is

You choose the wind conditions to design your system for based on a statistical study of the wind conditions at the launch site, your tolerance for scrubbing based on winds, and your budget. Then on the day of launch you measure the winds of the day to ensure that the design criteria are not exceeded.

Source

No economical system could be designed to launch in all weather conditions.