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gptkbp:instance_of
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gptkb:archaeological_site
|
|
gptkbp:allows
|
limited to specific aircraft types
|
|
gptkbp:associated_with
|
gptkb:British_military_aircraft
|
|
gptkbp:certification
|
NATO standard
|
|
gptkbp:crew
|
1 pilot
|
|
gptkbp:deployment
|
gptkb:aircraft
|
|
gptkbp:developer
|
based on earlier models
|
|
gptkbp:duration
|
0.5 seconds
|
|
gptkbp:elevation
|
up to 50,000 feet
from ground level to 50,000 feet
|
|
gptkbp:features
|
rocket-assisted ejection
|
|
gptkbp:first_flight
|
gptkb:1964
|
|
gptkbp:height
|
1.2 meters
|
|
gptkbp:historical_significance
|
widely used in Cold War era
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Martin-Baker Mk. 21 L
|
|
gptkbp:influenced_by
|
earlier Martin-Baker designs
|
|
gptkbp:introduced
|
1960s
|
|
gptkbp:invention
|
held by Martin-Baker Aircraft Company
|
|
gptkbp:is_designed_for
|
gptkb:aircraft
|
|
gptkbp:is_used_by
|
gptkb:military_base
|
|
gptkbp:legacy
|
influenced future ejection seat designs
|
|
gptkbp:length
|
1.5 meters
|
|
gptkbp:manufacturer
|
gptkb:Martin-Baker_Aircraft_Company
|
|
gptkbp:max_takeoff_weight
|
automatic
up to 600 knots
catapult system
|
|
gptkbp:modifications
|
various upgrades over time
|
|
gptkbp:notable_users
|
gptkb:British_Army_Air_Corps
|
|
gptkbp:operational_area
|
various air forces
|
|
gptkbp:related_to
|
gptkb:Martin-Baker_Mk._10
|
|
gptkbp:replaced_by
|
modern ejection seats
|
|
gptkbp:research_and_development
|
ongoing improvements
|
|
gptkbp:safety_features
|
automatic ejection system
|
|
gptkbp:safety_record
|
high safety rating
|
|
gptkbp:seating_capacity
|
mechanical ejection
|
|
gptkbp:services
|
gptkb:1965
|
|
gptkbp:status
|
retired from active service
|
|
gptkbp:successor
|
gptkb:Martin-Baker_Mk._22
|
|
gptkbp:training
|
required for pilots
|
|
gptkbp:type
|
gptkb:zero-zero_ejection_seat
|
|
gptkbp:weight
|
approximately 100 kg
|
|
gptkbp:width
|
0.6 meters
|
|
gptkbp:bfsParent
|
gptkb:Martin-Baker_Mk._21
|
|
gptkbp:bfsLayer
|
7
|