Japanese aerospace startup Letara raises $16 million to expand rocket business
TechCrunch
1h ago
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Japanese aerospace startup Letara completes financing of approximately $16 million, plans to expand its large-scale rocket system business, with targets covering aerospace, defense, and security markets.
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日本正加大对本土航天产业的投入,并放宽部分防务出口限制。在这一背景下,总部位于札幌的航天初创公司 Letara 完成 26 亿日元融资,约合 1600 万美元,准备把业务从小型卫星推进器扩展到更大推力的火箭系统。

融资后转向更大火箭系统

Letara 此前主要开发小型卫星用混合推进器。公司联席 CEO 平井翔太表示,新一轮资金将用于把多年研究和验证工作推进到商业化阶段,并探索面向航天、国防和安全市场的更广泛应用。

公司称,未来不仅会继续推进在轨验证,也将开发适用于不同场景的混合火箭系统。其目标客户包括卫星制造商、卫星运营商、发射公司以及政府部门。

  • 融资规模为 26 亿日元,约合 1600 万美元
  • 由 Headline Asia 等机构共同领投
  • 参投方包括 NES、Toyoda Gosei 等

核心技术瞄准推力与成本

Letara 的方案采用混合火箭设计,将固体燃料与液体氧化剂分开储存。公司使用塑料、橡胶等较低成本材料作为固体燃料,并通过自有工艺完成混合、成型和压缩,以提高点火稳定性和燃烧一致性。

公司认为,这一方案试图解决混合推进长期存在的三项问题:推力不足、性能稳定性不够,以及燃烧控制难度较高。按其说法,相比一些使用石蜡类材料的传统混合火箭,这套系统有望在减少浪费的同时提供更高推力。

已获订单,下一步是轨道点火测试

Letara 起源于北海道大学的推进研究,2020 年从校内项目独立出来。随着发射需求和防务需求上升,公司近年开始把重心从卫星推进器延伸到发射与防务相关系统。

公司称,已经获得来自火箭公司、卫星公司以及日本政府的订单,但未披露合同金额。下一项关键进展,是与海外合作方进行一次在轨点火测试。Letara 将其视为商业化前的重要节点。

除测试外,公司还需要建立可重复的制造流程、质量控制体系,以及支持规模化生产的燃料和贮箱供应链。对于未来是否能使用回收塑料作为燃料,公司表示存在可能,但仍需进一步测试和开发。

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