OR meaning in Space Science ?

Answer: What is Operational Requirement mean?

An Operational Requirement, commonly abbreviated OR, was a United Kingdom (UK) Air Ministry document setting out the required characteristics for a future (i.e., as-yet unbuilt) military aircraft or weapon system.

The numbered OR would describe what intended role the aircraft would be used for, e.g., bomber, fighter, etc., or what type of weapon was required, e.g., gun, armament, bomb type, etc.

In conjunction with any official specification, prospective manufacturers would then choose whether to design an aircraft or weapon for this particular requirement.

Operational Requirements were carried over with the dissolution of the Air Ministry and the creation of the Ministry of Defence (MoD).

reference

Full Form	Category
Outdoor Research	Academic & Science
Operational Research	Academic & Science
Oak Ridge Operations Office	Academic & Science
Orienting Response	Academic & Science
Operations Research	Accounts and Finance
Operating Result	Accounts and Finance
Outdoor Retailer	Business
Originator / Recipient	Computing
Logical Or	Electronics
Office of Record	General
O Ring	General
Oregon	Governmental
Operation Research	Governmental
Office of Research	Governmental
Operating Room	Healthcare
Odisha	Indian State
Orl Korec	International
Oristano (Provence)	International
Ordu	International
ÖRnek	International
Odds Ratio	Maths
Operative Risk	Medical
Open Reduction	Medical
Oriented	Medical
Other Rank(s) (nato)	Military and Defence
Official Regulation	Military and Defence
Operational Readiness	Military and Defence
Owasco River Railway	Regional
Orissa	Regional
Oriya	Regional
Logical Or (programming)	Softwares
Operational Right	Space Science
Operations Requirement	Space Science
Operations Review	Space Science
Operations Room	Space Science
Outer Roll	Space Science
Operational Requirement	Space Science
Oxygen Relief	Space Science
Olympic Record	Sports
Office Regenerator	Telecommunication
ArkeFly	Transport & Travel